JP2021534618A - Traffic transmission methods, equipment and computer storage media - Google Patents

Abstract

The present invention discloses a traffic transmission method, an apparatus and a computer storage medium. In the method of the present invention, the data of a transmission waiting message is tiled by a predetermined length to acquire at least one data block, and each data block is encapsulated according to a predetermined message format to wait for at least one transmission. Acquiring messages, analyzing each transmission-waiting message, determining the transmission direction of each transmission-waiting message, and scheduling transmission-waiting messages of the same transmission direction and the same processing method to the same traffic flow. It includes transmitting the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission rate. [Selection diagram] Fig. 3

Description

The invention claims priority benefit to a Chinese patent application with application number 201810880267.2 and filing date August 03, 2018, by reference to all content of the application. Incorporated into the present invention.

The present invention relates to the field of communication technology, but is not limited thereto, and particularly relates to a traffic transmission method, an apparatus, and a computer storage medium.

With the development of communication technology, the fusion of the three networks of the Internet, cable TV network and telecommunications network has progressed, forming one integrated network system. Of these three networks, the transmission technology of the telecommunications network is required to convert from synchronous digital layer (SDH, Synchronous Digital Hierarchy) technology to Ethernet technology such as packet transmission technology.

SDH technology is a kind of circuit transmission technology, specifically, it transmits information by arranging individual and dedicated circuit channels between both clients. The advantages are that the transmission delay time is short and the delay is delayed. It has low jitter, high reliability, and is particularly suitable for transmitting voice traffic. However, when there is no information transmission between both clients, this individual channel is always monopolized by both clients and cannot be used by other customers unless it is canceled, and the transmission efficiency is low. On the other hand, the packet transmission technology uses a message format to transmit information between both clients, and a specific solution is to build one virtual transmission channel between both clients, and both clients This virtual channel performs message transmission, the virtual channel may be located on the physical entity channel, and all clients share the bandwidth resources of the physical entity channel. When there is no communication between both clients, the bandwidth resources of the virtual transmission channel are shared and used by other clients to provide good multiplexing characteristics and ensure that bandwidth is not wasted. , High transmission efficiency and low transmission cost.

At present, in a network fused with a network, there is an uncertain time delay in transmitting a message and jitter due to the deviation of this time delay. Further, with network fusion, when voice traffic is transmitted by using packet transmission technology, the transmission quality of voice traffic may deteriorate due to the above-mentioned problem, and high-quality transmission of voice traffic may not be realized.

The embodiments of the present invention are intended to provide a traffic transmission method, an apparatus and a computer storage medium.

The technical proposal of the present invention is achieved as follows.
According to the first aspect of the present invention
To acquire at least one data block by tile-dividing the data of the message waiting to be transmitted by a predetermined length, and
Encapsulating each of the data blocks according to a predetermined message format to acquire at least one message waiting to be transmitted.
Analyzing each transmission waiting message and determining the transmission direction of each transmission waiting message.
Traffic transmission, including scheduling transmission-waiting messages of the same transmission direction and the same processing method to the same traffic flow, and transmitting the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission rate. Provide a method.

According to the second aspect of the present invention
Decapsulating the received transmission message and acquiring the data blockstream carried on the transmission message,
Decoding the data block in the reverse direction according to a predetermined code restoration policy to acquire a bitstream corresponding to the encoding method of the original traffic data.
Restoring the original traffic data from the bitstream,
Provided is a traffic transmission method including transmitting the original traffic data to a client.

According to the third aspect of the present invention.
A tile division unit configured to tile the data of a message waiting to be transmitted by a predetermined length and acquire at least one data block, and
An encapsulation unit configured to encapsulate each of the data blocks according to a predetermined message format, acquire at least one transmission waiting message, and transmit the transmission waiting message to the analysis unit according to a predetermined transmission speed.
An analysis unit configured to analyze each transmission waiting message and determine the transmission direction of each transmission waiting message.
A scheduling unit configured to schedule transmission-waiting messages in the same transmission direction and the same processing method to the same traffic flow,
Provided is a network apparatus including a first transmission unit configured to transmit the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission speed.

According to the fourth aspect of the present invention
A decapsulation unit configured to decapsulate a received transmission message and acquire a data block stream carried on the transmission message, and a decapsulation unit.
A first restore unit configured to reversely decode the data block according to a predetermined code restore policy and acquire a bitstream corresponding to the original traffic data encoding method.
A second restore unit configured to restore the original traffic data from the bitstream,
Provided is a network apparatus including a second transmitter configured to transmit original traffic data to a client.

According to the fifth aspect of the present invention.
Equipped with a first network interface, a first storage device and a first processor,
The first network interface is configured to send and receive signals during information transmission and reception with other external network elements.
The first storage device is configured to store a computer program that can be executed by the first processor.
The first processor provides a network apparatus configured to realize the traffic transmission method according to the first aspect when the computer program is executed.

According to the sixth aspect of the present invention.
Equipped with a second network interface, a second storage device and a second processor,
The second network interface is configured to send and receive signals during information transmission and reception with other external network elements.
The second storage device is configured to store a computer program that can be executed by the second processor.
The second processor provides a network device configured to implement the traffic transmission method according to the second aspect when the computer program is executed.

According to the seventh aspect of the present invention.
A computer storage medium is provided in which a traffic transmission program is stored and when the traffic transmission program is executed on at least one processor, the traffic transmission method according to the first or second aspect is realized.

The traffic transmission method, apparatus, and computer storage medium according to the embodiment of the present invention transmit by dividing the data of the traffic waiting for transmission into tiles for a unified predetermined length, analyzing the data according to a predetermined transmission speed, and transmitting the data. Achieved transmission at a stable speed during transmission of waiting traffic, delay time is extremely short, delay deviation is very small, and the transmission quality of traffic is close to the transmission quality of SDH network.

It is a schematic diagram of the communication network architecture which concerns on embodiment of this invention. It is a flowchart of message transmission which concerns on embodiment of this invention. It is a flowchart of the traffic transmission method which concerns on embodiment of this invention. It is a flowchart of the message processing in the transmission end which concerns on embodiment of this invention. It is a schematic diagram of the multiple selection which concerns on embodiment of this invention. It is a schematic diagram of the OTN frame formation which concerns on embodiment of this invention. It is a flowchart of another traffic transmission method which concerns on embodiment of this invention. It is a flowchart of the message processing in the target end which concerns on embodiment of this invention. It is a detailed flowchart of the traffic transmission method which concerns on embodiment of this invention. It is a flowchart of a specific example which concerns on embodiment of this invention. It is a flowchart of another concrete example which concerns on embodiment of this invention. It is a flowchart of a further specific example which concerns on embodiment of this invention. It is a structural schematic diagram of the network apparatus which concerns on embodiment of this invention. It is a structural schematic diagram of another network apparatus which concerns on embodiment of this invention. It is a schematic diagram of the specific hardware structure of the network apparatus which concerns on embodiment of this invention. It is a structural schematic diagram of the further one network apparatus which concerns on embodiment of this invention. It is a schematic diagram of the concrete hardware structure of another network apparatus which concerns on embodiment of this invention.

Hereinafter, the technical proposal according to the embodiment of the present invention will be generally described in detail with reference to the drawings in the embodiment of the present invention.

Referring to FIG. 1, a schematic diagram of an architecture of a communication network 100 to which the packet transmission technique according to the embodiment of the present invention is applied is shown, and the communication network 100 includes a plurality of client devices and a plurality of network node devices. .. The client devices are client 1, client 2, client 3 and client 4, respectively, and the network node device includes node A, node B, node C, node D, node E and node F, respectively. As shown in FIG. 1, when aggregating information to be transmitted in client 1 and client 2, a single point chain line passes between client 1 and client 2 through node A, node B, node C, and node D, respectively. One virtual transmission channel 1 as shown may be constructed. In this transmission channel 1, the client 1 and the client 2 are called a customer edge (CE, Customer Edge) device, and the node A and the node D are connected to the client 1 and the client 2, respectively, so that the provider edge (PE, Provider Edge) ) A device, and since node B and node C are only in charge of exchanging information data in this transmission channel, they are called a provider (P) device. Similarly, when a virtual transmission channel 2 as shown by a dotted line is constructed between the client 3 and the client 4, the node A and the node C may be called a PE device for the transmission channel 2, and the node B is a P device. May be called. For both transmission channels described above, as can be seen from the drawings, transmission channel 1 and transmission channel 2 share a physical entity channel from node A to node C via node B. When there is no message transmission between the client 1 and the client 2, the transmission channel 1 becomes idle and releases the bandwidth resource, so that the transmission channel 2 can share the bandwidth resource released from the transmission channel 1. It should be understood that the bandwidth of the transmission channel 2 is amplified and the waste of bandwidth is avoided.

The above-mentioned communication network 100 is not only applied to Ethernet, but is also applied to communication networks based on packet transmission technologies such as optical transmission networks (OTN, Optical Transport Network) and flexible Ethernet (FlexE, Flexible Ethernet). However, duplicate description will be omitted in the examples of the present invention.

Taking FIG. 1 as an example, in the process of transmitting information, information is usually transmitted using a message form, but the length of each message is indefinite and is usually 64 bytes to 1518 bytes. When there is no message to be transmitted to the client 2 in the client 1, the bandwidth of the transmission channel 1 can be shared and used by other clients, for example, can be shared and used by the transmission channel 2. However, when there is a message to be transmitted to the client 2 in the client 1, if the transmission channel 2 is used by the client 3 and the client 4, the transmission channel 1 is waited until the transmission between the client 3 and the client 4 is completed. There is no choice but to use. Therefore, in the packet transmission process, there may be an uncertain time delay in message transmission, which may cause delay and jitter in message transmission.

Regarding the communication device, FIG. 2 shows a specific flow of the message transmission process, and as can be seen from the drawing, the message received from the physical entrance undergoes analysis and sorting, and the characteristic information of the message, for example, the MAC of the message. Based on the content such as address, IP address, priority, etc., the transmission port of the message is determined, and based on the exit and priority of the message, the order 1 and the order 2 shown in the drawing are determined. .. .. While ordering like order n, it waits for scheduling and outputs it to the physical exit. As can be seen from the drawing, the scheduler schedules messages from different orders based on a predetermined scheduling algorithm and sends them to the physical exit. Even if it is possible to ensure that the messages have a certain output bandwidth based on the scheduling algorithm, the length of each message is different, so if you try to send and output one message, the previous one message will be sent completely. There is no choice but to wait until the next message is sent, and the waiting time is uncertain, and the uncertainty of the delay time may cause delay jitter. A message has a certain amount of delay and jitter each time it passes through one network node device, and when it passes through multiple devices, a huge delay time and delay jitter are accumulated, and the transmission quality becomes unstable in the packet transmission process. When high quality voice traffic, such as dedicated line traffic for large customers such as power networks, military networks, railway networks, etc., is required, the quality of the voice traffic is significantly reduced, and such dedicated line traffic is required. It may not be possible to meet the required quality.

In summary, in the case of packet transmission technology, when one client A starts delivering a traffic message, if the other client is sending a message, client A waits until the other client completes sending the current message. Then there is no choice but to reclaim the bandwidth of the virtual channel, which prevents Client A's message from being sent in a timely manner, thus causing an uncertain time delay in sending the message in a network fused network, and this time. There is jitter due to delay deviation. If a message transmitted between a pair of clients needs to pass through many intermediate node devices on the network, this message causes some delay and jitter each time it passes through one intermediate node device on the network. When passing through a plurality of intermediate node devices, delay and jitter are accumulated, and the quality of traffic transmission is seriously deteriorated. Therefore, with network fusion, when voice traffic is transmitted using packet transmission technology, the transmission quality of voice traffic deteriorates due to the above-mentioned problems, and high-quality transmission of voice traffic cannot be achieved.

The embodiments of the present invention provide the following technical configurations based on the network architecture shown in FIG.

With reference to FIG. 3, a traffic transmission method according to an embodiment of the present invention is shown, and this method may be used for a transmission end PE device for transmitting traffic, and this method is described as
In S301, the data of the message waiting to be transmitted is tiled for each predetermined length to acquire at least one data block.
In S302, each data block is encapsulated according to a predetermined message format, and at least one transmission waiting message is acquired.
In S303, each transmission waiting message is analyzed, and the transmission direction of each transmission waiting message is determined.
S304 includes scheduling transmission waiting messages of the same transmission direction and the same processing method to the same traffic flow, and transmitting the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission speed. It's fine.

Regarding the technical proposal shown in FIG. 3, the processing method may represent a process of processing the data of the traffic waiting for transmission according to the steps of S301 to S303. As can be seen, the data of the traffic waiting to be transmitted is tiled according to a unified predetermined length, then analyzed and transmitted according to the predetermined transmission speed, but the network interface of the transmission destination or the time slot on the network interface is dedicated. Therefore, it is possible to achieve stable speed transmission during transmission of transmission waiting traffic, the delay time is extremely short, the delay deviation is very small, and the transmission quality of the traffic is close to the transmission quality of the SDH network.

With respect to the technical proposal shown in FIG. 3, in one possible implementation, the data of the transmission waiting traffic includes a bitstream received by the physical interface and / or message data received from the user interface.

With respect to the above-described embodiment, preferably, when the data of the transmission waiting traffic is a bit stream received by the physical interface, the data of the transmission waiting message is tiled for each predetermined length to acquire at least one data block. To do
Bitstreams received by the physical interface are tiled by the predetermined length to acquire at least one data block, or
After encoding the bitstream received by the physical interface according to a predetermined coding policy, the encoded bitstream is tiled by a predetermined length to acquire at least one data block.

With respect to the above-described embodiment, preferably, when the data of the transmission waiting traffic is the message data received by the user interface, the data of the transmission waiting message is tiled for each predetermined length and at least one data block is acquired. To do
Encoding the message data according to a predetermined coding policy,
To adjust the transmission speed of the encoded message data and buffer the encoded message data.
The buffered encoded message data is tiled by a predetermined length to acquire at least one data block.

Taking the transmission channel 1 shown in FIG. 1 as an example, the client 1 transmits the transmission waiting traffic to the client 2, and this traffic may be a dedicated line traffic for which transmission quality is required. In this case, the node A has a node. The customer interface between A and the client 1 may be a physical interface or a user interface. When the customer interface is a physical interface, the physical interface may detect the customer signal and the bitstream information and slice the customer's bitstream by a predetermined length. For example, if the customer interface is a 1G Ethernet interface, the customer's physical interface is 8b / 10b encoded (ie, converting an 8-bit length to a 10-bit length), a physical-coded sublayer (that is, converting an 8-bit length to a 10-bit length) in the PCS hierarchy. What is detected in the PCS, Physical Coding Sublayer) hierarchy is a 10b encoded bit stream, which is divided into information blocks of a predetermined length and then encapsulated in an Ethernet message. When the customer interface is a 10G, 40G Ethernet interface, the PCS hierarchy uses 64b / 66b coding (ie, converting a 64-bit length to a 66-bit length) and is detected by the PCS. What is extracted is a coded 66-bit length block stream that is tiled by a fixed length of the 66-bit block stream and then encapsulated in an Ethernet message.

If the customer interface is a user interface, what is received is message data, such as an Ethernet message, which first encodes the Ethernet message (where various encoding schemes can be used, but 64b / 66b encoding). Since the method is relatively efficient, a 64b / 66b coding method may be used for convenience of speed adjustment, and 64b / 66b is exemplified in the examples of the present invention, but other coding methods are used. It does not mean to rule out the availability of the scheme), buffering a stream of encoded 66-bit blocks and adjusting the speed while buffering. When moving in a direction in which the buffer depth becomes almost empty (Nearly empty), an idle idle block (that is, a control block having a length of 66 bits, this information block is an idle information block) in a stream of 66-bit blocks. (Used to indicate), while moving in the direction that the buffer depth is almost full (Nearly full), by removing idle blocks or other information blocks from the stream of 66-bit blocks. You can guarantee that the buffer will not overflow. A 66-bit length blockstream is read from the buffer, tiled by fixed length, and then encapsulated in an Ethernet message.

In this embodiment, when the coded bit stream or the coded message data is a 66-bit stream, the predetermined length is an integral multiple of 66 bits.
When the encoded bitstream or the encoded message data is a 65-bit stream, the predetermined length is an integral multiple of 65 bits.
When the encoded bitstream or the encoded message data is a 10-bit stream, the predetermined length is an integral multiple of 10 bits.

With respect to the technical proposal shown in FIG. 3, in one possible implementation, it is possible to encapsulate the data block according to a predetermined message format and acquire a transmission waiting message.
Each said data block is encapsulated according to the Ethernet message format and includes acquiring at least one pending Ethernet message.

With respect to the embodiments described above, preferably each said data block is encapsulated according to the Ethernet message format to obtain at least one pending Ethernet message.
The Multiprotocol Label Switching (MPLS, Multi-Protocol Label Switching) protocol label of each data block is encapsulated in the pending Ethernet message, and the MPLS protocol label of the data block is combined with a pseudo wire label and a tunnel label. Includes that at least one of label) and pseudowire control words is included.

With respect to the embodiments described above, preferably each said data block is encapsulated according to the Ethernet message format to obtain at least one pending Ethernet message.
The attached information of each data block is encapsulated in the transmission waiting Ethernet message, and the attached information of the data block includes at least one term of a sequence number, clock information, and a time stamp value.

It should be noted that the present embodiment may be encapsulated using other message formats, but the present specification merely illustrates the Ethernet message format. In the process of encapsulating according to the Ethernet message format, about 30 bytes (6 bytes source MAC address, 6 bytes target MAC bytes, 2 bytes message classification, 4 bytes pseudo wire label, 4 bytes tunnel label, 4 bytes The control word of, 4-byte cyclic redundancy check (CRC, Cyclic Redundancy Check) is added, and as shown in Table 1, the configuration of the Ethernet message is as follows, taking 65-bit encoding as an example.

In Table 1, in order to accelerate the analysis speed of the message and quickly determine the transmission channel of the message, the MPLS label exchange technique is used to realize the scheduling exchange of the message. A label value is attached to the message, which may include fields such as tunnel labels, pseudowire labels, and pseudowire control words. The message content section is used for transfer of a fixed block length, and in the case of Table 1, the length of the message content section is 32 times as long as 65 bits by tile-dividing each stream of 65-bit blocks, that is, 260 bytes (ie, 1 byte is equal to 8 bits). Encapsulated Ethernet messages are aggregated and output at a fixed rate. According to MPLS label exchange technology, Ethernet messages are encapsulated with tunnel labels and pseudo-wire labels, so the label values can be used to parse the message to obtain information such as MAC addresses and IP addresses. It does not have to be used and analyzed, thereby accelerating the table lookup (Table Look-up) speed of the message and accelerating the processing speed. Since the customer to which the message belongs and the transmission channel can be determined based on the label value, when the content of the message data is divided and then encapsulated, the message has one or two layers of labels, that is, a tunnel label or a pseudo. Wire labels may be added for encapsulation. According to the MPLS protocol, pseudowire labels are used to display customer attributes, tunnel labels are used to display a customer's transmission path, and tunnel labels are used to display different customers on the same transmission path. Based on the label value, the transmission path of each traffic flow is determined, and each node device on the transmission path assigns this customer an independent network interface or an independent time slot on the network interface.

The pseudo-wire control word may include a sequence number, clock information, a time stamp value, and the like, and is used to monitor information such as the presence or absence of message loss, clock restoration of customer traffic, and delay time. The longer the slice length, the longer the content length of the block carried on the message, and the higher the encapsulation efficiency. The longer the message, the more the messages of both traffic flows gather in the same direction, the scheduling time does not shift, and when both traffic flows arrive at the same time, there is only output in turn, and one traffic outputs first. , Another traffic waits for output. The larger the message, the longer the waiting time for the next traffic flow. The shorter the block length, the shorter the content length of the block carried on the message, and the lower the encapsulation efficiency. However, when the messages of both traffic flows gather in the same direction at the same time, the waiting time of the output waiting message is short. Taking 64b / 66b coding as an example, in order to decode a traffic flow that has performed 64b / 66b coding, it is necessary to find a boundary of 66b block length, and the period required to find the boundary of 66b block is very long. Because it is long, the fixed length of the tile division may be an integral multiple of 66b to eliminate the process of finding the boundary of the 66b block from the encapsulated message, and then the 66-bit block should be divided at that length. Well, all the information in the block is a complete 66-bit block of bits, where the first bit of the block is just the first bit of the first 66-bit block, when performing 64b / 66b decoding. , It has become possible to omit the work of searching for the boundary of a 66-bit block. Similarly, when tiled a stream of 65-bit blocks, the block length may be an integral multiple of 65 bits, and when tiled a stream of 10-bit blocks, the block length may be an integral multiple of 10 bits. ..

In the 10M, 100M, and 1G Ethernet interfaces, the physical PHY layer uses coding formats such as 4b / 5b and 8b / 10b. When performing 8b / 10b coding in the physical PHY layer, converting the 8-bit length to a 10-bit length transmits information on special functions and increases the transmission bandwidth by an additional 25%, that is, Transmission of a 10M traffic flow requires 12.5M bandwidth, but the bandwidth utilization of the transmission channel is only 80%. For example, if a stream of encoded 10-bit blocks is tiled and the message encapsulation efficiency is also 90%, the bandwidth utilization is only 72%. Re-encode what was encoded in 10b and convert eight 10b coded blocks into one 65-bit long coded block (the specific conversion process is China G.7041 / Y.1303 standard 2005 version 8). The maximum transfer efficiency of the message is 80 by converting the stream of eight 10b coded data into one stream of 65-bit blocks and tiling the stream of 65-bit blocks. It improves from% to 98.46%. When splitting a stream of 65-bit blocks into tiles, the block length may be an integral multiple of the 65-bit length to save the task of finding boundaries for the 65-bit block during decoding, and all the information in the block. Is a complete 65-bit block, the first bit to be die is exactly the first bit of the first 65-bit block, and when decoding the 65b block, the work of searching for the boundary of the 65b block is omitted. Is now possible. In the case of realization, the 65-bit block may be re-encoded into a 66-bit block, so that the bitstream before conversion is a bitstream of 66-bit length, and the code length of the PCS layer of the 10G interface and the 40G interface. Becomes the same as. When encoding 4b / 5b in the physical hierarchy, it may be directly died in a stream of encoded 5-bit length blocks, the block length may be an integral multiple of 5 bits, and two 5-bit lengths. 8 10b coded data blocks are converted into one 65 bit block according to the rules of treating the coded blocks of 1 into one 10 bit length coded block and using 8b / 10b to convert to 65b. Tile a stream of blocks of bits.

Regarding the technical proposal shown in FIG. 3, specifically, a scheduling unit is arranged in the transmission end PE device for traffic transmission, a transmission waiting message is transmitted to the scheduling unit according to a predetermined transmission speed, and customer information is required for the transmission speed. Bandwidth should be guaranteed. Encapsulated wait messages are always sent at a fixed rate, regardless of whether the customer traffic is overloaded or lightloaded. When the traffic is in full flow state, the waiting message carries a large amount of information useful to the customer, and when the customer traffic is lightly loaded, some of the waiting messages are useful information to the customer. Some is idle information. By sending transmission wait messages at a constant speed, the bearer speed of the client does not change at all times, and no matter how the valid information of the customer traffic changes, the bearer speed does not change at all times, and the effective bandwidth of the customer traffic. And is not affected by the speed of other traffic on the network.

With respect to the technical proposal shown in FIG. 3, analyzing the transmission waiting message and determining the transmission direction of the transmission waiting message specifically performs label analysis for all the messages transmitted from the customer interface. , To determine the transmission channel of the message.

With respect to the technical proposal shown in FIG. 3, in one possible implementation, the transmission waiting messages of the same transmission direction and the same processing method are scheduled to the same traffic flow, and the traffic flow is set to a dedicated network interface or network according to a predetermined transmission speed. Sending to a dedicated time slot on the interface is
Scheduling messages waiting to be transmitted in the same transmission direction and the same processing method to the same traffic flow according to the Round Robin scheduling method.
It may include transmitting the traffic flow to a dedicated network interface or a dedicated time slot on the network interface according to a predetermined transmission rate.

According to this embodiment, when the transmission speed is stable, the packet length is fixed, and the leased line traffic in the same transmission direction participates in the scheduling, the work speed of the scheduling unit is all that participate in the scheduling. Faster or equal to the total speed of the traffic flow. Since the network interface (or network interface time slot) for scheduling and output is dedicated, the output speed is stable and the working condition is stable, and the dedicated line traffic flow is transmitted at a stable speed along the transmission path on the network. The delay time is extremely short, the delay deviation is very small, and the transmission quality of the traffic is close to the transmission quality of the SDH network.

In addition, selectively schedule transmission waiting messages of the same transmission direction and the same processing method to the same traffic flow, and transmit the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission speed. teeth,
When there is only one traffic flow that can be scheduled / output out of multiple traffic flows, the traffic flow that can be scheduled / output is scheduled by the multiple selection method, and the dedicated network interface or network interface is used according to the predetermined transmission speed. Includes sending to a dedicated time slot.

If only one traffic flow can be sent to the client interface among all messages and there are no multiple traffic flows that gather in one traffic flow, the multiple selection method is used instead of round robin scheduling. You can do it.

In this embodiment, the above-mentioned technical proposal is applied to a PE device as a transmission end, the interface on one side of the PE device is connected to the customer traffic as a U-side interface, that is, a customer interface, and the other side is the N-side. Connect to a network interface as an interface. Customer traffic enters the network system from the PE device, passes through a number of devices, and is sent to the target point via the constructed network channel. However, in the overall network architecture, PE equipment as a transmission end is very likely to be used for P equipment on other transmission channels, i.e., simply sending traffic from one network interface to another. be. Therefore, when the PE device at the transmission end is used for the P device of another transmission channel at the same time, the above-mentioned technical proposal of this embodiment is based on the above-mentioned technical proposal.
When at least one physical signal is received from the dedicated network interface or the dedicated time slot of the network interface, each of the physical signals is restored to message data.
Analyzing the message data corresponding to each of the physical signals to determine the transmission direction of at least one of the message data.
It may further include scheduling message data of the same transmission direction and the same processing method to the same traffic flow, and then traffic mapping the traffic flow and transmitting it by a dedicated network interface or a dedicated time slot of a network interface.

That is, in a normal case, the PE device at the transmission end acts as a P device for another transmission channel at the same time, and based on this, the technical proposal of this embodiment may refer to FIG. 4, as shown by the solid line in FIG. In addition, messages to the network interface are scheduled, aggregated to form one traffic flow, and transmitted to the network interface, and the messages transmitted to the network interface are traffic-mapped and transmitted by the physical interface on the network. As shown by the dotted line in FIG. 4, the messages to the customer interface are scheduled and aggregated to form one traffic flow and sent to the customer interface. After encapsulation, customer traffic is sent at a fixed length and at a constant speed, the speed of all dedicated line traffic is constant and does not change, all dedicated line traffic in the same direction is scheduled and output, and the working speed of the scheduling unit. Is faster or equal to the total speed of all input traffic flows, which schedules the input traffic flow as soon as it enters the scheduling unit, for more information that the scheduling unit uses a simple alternating scheduler. You can satisfy your request just by yourself.

As for the message sent to the customer interface, as shown in FIG. 5, only one traffic flow of the message from the network interface and the message from all the customer interfaces is sent to the customer interface and aggregates in one traffic flow. If multiple traffic flows do not exist, a multiplexer may be used instead of the scheduler, and one traffic flow is selected from multiple traffic flows and sent to the customer interface.

In the above-mentioned technical proposal, the network interface may be an ordinary Ethernet interface, or may be a FlexE interface or an OTN interface. In the case of an Ethernet interface, the entire network interface corresponds to one time slot. For FlexE or OTN interfaces, the network interface has a number of time slots. If the network interface is an ordinary Ethernet interface, this network interface is required to be able to transmit only leased line traffic, the network interface is dedicated, and other non-leased line traffic is not transmitted, so that the leased line traffic is transmitted during the transmission process. Guarantee that it is not affected by the speed uncertainty and packet length uncertainty of other traffic.

When the network interface is a FlexE interface, the scheduled and aggregated traffic flows are sent to the logical interface of the FlexE network, mapped to the FlexE time slot and transmitted in the form of a FlexE customer. In the FlexE interface, the entire FlexE channel is divided into n * 20 timeslot slices (Slices), each timeslot slice has a length of 66 bits, and the corresponding bandwidth is a bandwidth of 5 G (bits / second). be. Each FlexE customer is transferred in a different time slot, and by strictly physically isolating each other, each FlexE customer is transmitted at a constant speed without affecting each other.

When the network interface is an OTN interface, as shown in FIG. 6, the aggregated transmission traffic flow is transmitted to the logical interface of the OTN network, and the optical channel payload unit (OPU, Optical channel Payload Unit) is used as a customer of the OTN physical interface. The OPU is encapsulated in an optical channel data unit (ODU, Optical Channel Data Unit), and one ODU is finally processed and transmitted to OTN frame traffic as one time slot. Different ODUs are isolated from each other and do not affect each other's transmission speed.

According to the traffic transmission method provided in this embodiment, the transmission speed of the leased line traffic is stable and the packet length is fixed. Therefore, when the leased line traffic in the same direction participates in the scheduling, it is scheduled and output. The network interface (or network interface time slot) is dedicated and the output speed is stable. Therefore, in a stable working state, the leased line traffic flow is transmitted at a stable speed in the transmission path on the network, the delay time is extremely short, the delay deviation is very small, and the transmission quality of the traffic is the transmission quality of the SDH network. close.

With reference to FIG. 7, a traffic transmission method according to an embodiment of the present invention is shown, and this method may be used for a receiving end PE device for traffic transmission.
In S701, the received transmission message is decapsulated to acquire the data block stream carried on the transmission message, and
In S702, the data block is reverse-decrypted according to a predetermined code restoration policy to acquire a bitstream corresponding to the encoding method of the original traffic data.
In S703, restoring the original traffic data from the bitstream and
In S704, the transmission of the original traffic data to the client is included.

In the technical proposal of the present embodiment, after receiving the transmitted message, the encapsulation section content including the message target address, the original address, the label, the CRC inspection and the like fields is removed by reverse encapsulation with reference to FIG. Then, the slice portion carried in the message is extracted, the coded stream of the bit block is restored and decoded, and the original customer traffic is restored and output from the stream of the coded block. For example, if the customer interface is a 66-bit block stream, the extracted 66-bit block stream is sent and sent to the interface in the physical hierarchy, but if the customer interface is a coded stream that has undergone 8b / 10 encoding. In the case of converting and coding to 65b via 8b / 10 coding, after extracting the stream of the 65b coding block, the 10b coding block is first restored and decoded from the 65b coding block, and then the 10b coding is performed. Send the block to the interface of the physical hierarchy and send it out.

Referring to FIG. 9, the flow of the traffic transmission method according to the embodiment of the present invention is shown, and this flow is applied to the two PE devices of the network architecture shown in FIG. 1, the transmission end PE device A and the target PE device B, respectively. It may be utilized and this flow may include the following steps:
In S901, the data of the message waiting to be transmitted is tiled in the device A for each predetermined length, and at least one data block is acquired.
In S902, each data block is encapsulated in the apparatus A according to a predetermined message format, and at least one transmission waiting message is acquired.
In S903, the apparatus A analyzes each transmission waiting message, determines the transmission direction of each transmission waiting message, and determines the transmission direction.
In S904, the apparatus A schedules transmission waiting messages of the same transmission direction and the same processing method to the same traffic flow, and transmits the traffic flow to the dedicated network interface or the dedicated time slot of the network interface according to a predetermined transmission speed.
In addition, the above-mentioned steps S901 to S904 are a flow of transmitting the leased line traffic in the transmission end PE apparatus A, and the specific realization process may refer to the corresponding part of the first embodiment, and the embodiment of the present invention may be referred to. In the above, duplicate explanations will be omitted.
In S905, the transmission message received in the apparatus B is decapsulated, and the data block stream carried on the transmission message is acquired.
In S906, the data block is reversely decoded in the apparatus B according to a predetermined code restoration policy, and a bit stream corresponding to the coding method of the original traffic data is acquired.
In S907, the device B restores the original traffic data from the bitstream.
In S908, the device B transmits the original traffic data to the client.
It should be noted that the above-mentioned steps S905 to S908 are flows in which the dedicated line traffic is received in the target PE apparatus B, and the specific realization process may refer to the corresponding portion of the second embodiment, which is duplicated in the embodiment of the present invention. Explanation is omitted.

Regarding the flow shown in FIG. 9, in this embodiment, the specific realization process of the flow shown in FIG. 9 will be described by the following specific examples. It should be noted that the numbers of the specific examples do not indicate the priority relationship or the context between the examples and the examples, but are simply used to distinguish different examples.

First Specific Example With reference to FIG. 10A, taking FlexE as an example, in a PE device at a transmission end, there are four 1G customer traffic in a bit-encoded stream of the PCS layer, and each of them is converted and encoded to 65b via 8b / 10b. Then, slicing to a coded block of 65-bit length, slicing to a fixed length, encapsulating each into an Ethernet message, carrying an MPLS label, and round-robin scheduling. Constant speed transmission to the department. After label analysis, messages of the same direction and the same processing method are aggregated by scheduling to form one traffic flow, mapped to FlexE time slots (these time slots are dedicated) in the FlexE customer format, and FlexE. FlexE traffic processing is completed at the interface, and is sent out via, for example, 64/66 coding, time slot mapping, FlexE frame formation, and the like.

In the P device on the network, after extracting the traffic of the corresponding time slot from the FlexE interface, as shown by the dotted line in the P device, it directly intersects at the FlexE time slot and sends it to the time slot of the other FlexE interface. You may extract customer traffic from the time slot, restore the customer traffic, schedule it to the corresponding network interface by the scheduler, encode the message and map it to the corresponding FlexE time slot, as shown by the solid line in the P device. It may be sent by the FlexE interface.

In the target PE device, message traffic is restored from the FlexE interface time slot, then sent to the corresponding physical interface by scheduling, decapsulated and bit-encoded block restore, and then restored to the bitstream of customer traffic to the customer. Send. For four 1G speed customers, after slicing and encapsulation, the total speed approaches 5G speed and can be transmitted by one FlexE time slot.

Second Specific Example With reference to FIG. 10B, taking OTN as an example, in a PE apparatus at a transmission end, there are two 1G customer traffic in a PCS hierarchical bit coded stream, and the coded block of 65b via 8b / 10b. After setting conversion-encoded, the next step is to slice each 65-bit length coded block, slice it to a fixed length, then encapsulate it in an Ethernet message, carry an MPLS label, and perform round-robin scheduling. Constant speed transmission to the department. After label analysis, messages in the same direction are aggregated by scheduling to form one traffic flow, and processed in the OTN interface by the OTN customer's method, for example, OPU mapping, ODU encapsulation, OTU frame formation, etc. , Send.

In the P device on the network, after extracting the OTU traffic from the OTN interface, as shown by the solid line in the P device, the P device may be directly crossed by the ODU and transmitted to the OTU of the other OTN interface. As shown by the solid line in, OPU content is extracted from the ODU, restored to customer traffic, scheduled by the scheduler to the corresponding network interface, the message is mapped to the OPU, encapsulated in the ODU, the OTU frame is formed, and the OTN interface. May be sent by.

In the target PE device, after extracting ODU traffic from the OTN interface, it is sent to the corresponding physical interface by scheduling via OPU extraction and message traffic restoration, and then decapsulated, bit-encoded block restoration, and then customer traffic. Restore the bitstream and send it to the customer. In the case of two 1G speed customers, after slicing and encapsulation, the total speed approaches 2.5G speed and can be transmitted by one ODU.

Third Specific Example With reference to FIG. 10C, taking ordinary Ethernet as an example, there are customer traffic of 10M, 100M, and 1G in the PCS layered bit coded stream in the transmission end PE device, respectively, and the code of 65b via 8b / 10b. If you set the conversion block to be performing conversion coding, then each of the 65-bit length coded blocks is sliced, sliced to a fixed length, then encapsulated in an Ethernet message, and the MPLS label is carried. And send it to the round robin scheduling section at a constant speed. After label analysis, messages of the same direction and the same processing method are aggregated by scheduling to form one traffic flow, which is sent by a dedicated Ethernet interface. Note that this Ethernet interface forwards only one traffic flow and does not share the same interface with other traffic flows.

In the P device on the network, customer traffic is restored from the Ethernet interface, scheduled to the corresponding network interface by the scheduler, and sent out by the Ethernet interface.

In the target PE device, the message is extracted from the Ethernet interface, decapsulated, bit-encoded block restore, and then the bitstream of customer traffic is restored and sent to the customer. Three customers with 10M, 100M, and 1G speeds share one transmission channel, but they can all transmit with high quality without affecting each other, depending on the actual speed of traffic, message length, and network conditions. Not affected.

As can be seen from the description of the three specific examples described above, according to the traffic transmission method provided in the embodiment of the present invention, the leased line traffic flow is transmitted at a stable speed in the transmission path on the network and is delayed. The time is extremely short, the delay deviation is very small, and the transmission quality of the traffic is close to the transmission quality of the SDH network.

With reference to FIG. 11, the configuration of the network device 110 according to the embodiment of the present invention is shown, and the corresponding network device is
The tile division unit 1101 configured to tile the data of the message waiting to be transmitted by a predetermined length and acquire at least one data block, and
With the encapsulation unit 1102 configured to encapsulate each data block according to a predetermined message format and acquire at least one transmission waiting message, and to transmit the transmission waiting message to the analysis unit according to a predetermined transmission speed. ,
The analysis unit 1103, which is configured to analyze each transmission waiting message and determine the transmission direction of each transmission waiting message,
A scheduling unit 1104 configured to schedule transmission waiting messages in the same transmission direction and the same processing method to the same traffic flow, and
It comprises a first transmission unit 1105 configured to transmit the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission rate.

In the above-mentioned technical proposal, when the data of the transmission waiting traffic is a bit stream received by the physical interface, the tile division unit 1101
The bitstream received by the physical interface is tiled by the predetermined length to acquire at least one data block, or
The bitstream received by the physical interface is encoded according to a predetermined coding policy, and then the encoded bitstream is tiled by a predetermined length to acquire at least one data block. ..

In the above-mentioned technical proposal, when the data of the transmission waiting traffic is the message data received by the user interface, the tile division unit 1101 determines.
The message data is encoded according to a predetermined coding policy, and the message data is encoded according to a predetermined coding policy.
The transmission speed of the coded message data is adjusted, the coded message data is buffered, and the coded message data is buffered.
The buffered encoded message data is tiled by a predetermined length to acquire at least one data block.

In the above-mentioned technical proposal, when the encoded bitstream or the encoded message data is a 66-bit stream, the predetermined length is an integral multiple of 66 bits.
When the encoded bitstream or the encoded message data is a 65-bit stream, the predetermined length is an integral multiple of 65 bits.
When the encoded bitstream or the encoded message data is a 10-bit stream, the predetermined length is an integral multiple of 10 bits.

In the above-mentioned technical proposal, the encapsulation unit 1102 is
Each said data block is encapsulated according to the Ethernet message format and configured to acquire at least one pending Ethernet message.

In the above-mentioned technical proposal, the encapsulation unit 1102 is
The Multiprotocol Label Switching (MPLS) protocol label for each data block is encapsulated in the pending Ethernet message and the MPLS protocol label for the data block is at least one of a pseudowire label, a tunnel label and a pseudowire control word. Is configured to be included.

In the above-mentioned technical proposal, the encapsulation unit 1102 is
The attached information of each data block is encapsulated in the transmission waiting Ethernet message, and the attached information of the data block is configured to include at least one term of a sequence number, clock information, and time stamp value.

In the above-mentioned technical proposal, the scheduling unit 1104 is
According to the round-robin scheduling method, transmission waiting messages of the same transmission direction and the same processing method are scheduled to the same traffic flow.
The traffic flow is configured to be transmitted to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission rate.

In the above-mentioned technical proposal, the scheduling unit 1104 is
When there is only one traffic flow that can be scheduled / output out of multiple traffic flows, the traffic flow that can be scheduled / output is scheduled by the multiple selection method, and the dedicated network interface or network interface is used according to the predetermined transmission speed. It is configured to send to a dedicated time slot.

In the above-mentioned technical proposal, the network device 110 is further described.
A recovery unit 1106 configured to recover each of the physical signals into message data upon receiving at least one physical signal from the dedicated network interface or the dedicated time slot of the network interface is provided.
The analysis unit 1103 is further configured to analyze the message data corresponding to each of the physical signals and determine the transmission direction of at least one of the message data.
The scheduling unit 1104 further schedules message data of the same transmission direction and the same processing method to the same traffic flow, and then traffic-maps the traffic flow and transmits the traffic flow by a dedicated network interface or a dedicated time slot of the network interface. It is composed of.

In this embodiment, the "part" may be a part circuit, a part processor, a part program, a part software, etc., and of course, it may be a unit or a module. Please understand that it may be non-modular.

Further, each component in the present embodiment may be integrated in one processing unit, or each unit may be an independent physical entity, or two or two or more units are integrated in one unit. It may be the one that was done. The integrated unit described above may be realized in the form of hardware or in the form of a functional module of software.

If the integrated unit is realized in the form of a functional module of software and is not sold or used as an independent product, it may be stored in one computer-readable storage medium, and based on this understanding, the techniques of this embodiment. The essential part of the proposal, the part that contributes compared to the prior art, or all or part of this technical proposal may be realized in the form of a software product, which is stored in one storage medium and has it. The method of the present embodiment includes some instructions, wherein the instructions are executed by a single computer device (which may be a personal computer, server, network device, etc.) or processor (processor). All or part of is feasible. The above-mentioned storage medium includes various media that can store program codes such as U disk, mobile hard disk, read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk. ..

Therefore, in the present embodiment, a computer storage medium in which the traffic transmission program is stored is provided, and the traffic transmission program can be executed by at least one processor to realize the traffic transmission method according to the first embodiment. Is.

With respect to the network device 110 and the computer storage medium described above, with reference to FIG. 13, a specific hardware structure of the network device 110 according to the embodiment of the present invention is shown, and the corresponding configuration includes the first network interface 1301 and the first network interface 1301. 1 Storage device 130
The second processor and the first processor 1303 may be provided, and each component is connected together by the bus system 1304. It should be understood that the bus system 1304 is used to realize the connection and communication between these components. The bus system 1304 may include not only a data bus but also a power bus, a control bus and a status signal bus. In order to clarify the explanation, various buses are collectively referred to as a bus system 1304 in FIG. Here, the first network interface 1301 is used for receiving and transmitting signals in the process of transmitting and receiving with other external network elements.
The first storage device 1302 is configured to store a computer program that can be executed by the first processor 1303.
The first processor 1303
When the computer program is executed,
To acquire at least one data block by tile-dividing the data of the message waiting to be transmitted by a predetermined length, and
Encapsulating each data block according to a predetermined message format to obtain at least one message waiting to be transmitted,
Analyzing each transmission waiting message and determining the transmission direction of each transmission waiting message.
To realize that transmission waiting messages of the same transmission direction and the same processing method are scheduled to the same traffic flow, and the traffic flow is transmitted to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission speed. It is composed.

It should be noted that the first storage device 1302 according to the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both a volatile memory and a non-volatile memory. .. Here, the non-volatile memory includes a read-only memory (Read-Only Memory, ROM) and a programmable read-only memory (Programmable).
ROM, PROM), erasable and programmable read-only memory (Erasable PROM, EEPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM) and is used as an external cache. By way of illustration and not limiting, various forms of RAM, such as static random access memory (Static RAM, SDRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous type. Dynamic Random Access Memory (Synchrous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM, ESDRAM), Synchronous Link Dynamic Random access memory (Synchrink DRAM, SDRAM) and direct rambus RAM (Direct Rambus RAM, DRRAM) may be used. The first storage device 1302 of the system and method described herein is intended to include, but is not limited to, these and any other suitable type of storage device.

The first processor 1303 may be an integrated circuit chip having signal processing capability. In the implementation process, each of the above-mentioned methodological steps may be completed by a hardware integrated logic circuit or software form instruction of the first processor 1303. The first processor 1303 includes a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and a field programmable gate array (Field Programmable Gate Array).
GA) or other programmable logic element, discrete gate or transistor logic element, discrete hardware assembly. Each method, step and logic block diagram disclosed in the embodiments of the present invention can be realized or implemented. The general-purpose processor may be a microprocessor, or may be any conventional processor or the like. It may be executed and completed directly by a hardware decoder based on each step of the method disclosed in the embodiments of the present invention, or it may be executed and completed by a combination of hardware and software modules in the decoder. The software module may be housed in a storage medium known in the art such as random memory, flash memory, read-only memory, programmable read-only memory or electrically erasable and programmable read-only memory, registers. This storage medium is built in the first storage device 1302, and the first processor 1303 reads the information in the first storage device 1302 and combines it with the hardware to realize the above-mentioned method.

It should be noted that these embodiments described herein are feasible with hardware, software, firmware, middleware, microcode or combinations thereof. For hardware realization, the processing unit is one or more application-specific integrated circuits (ASICs), digital signal processor (DSP), digital signal processing device (DSP Device, DSPD), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, microcontrollers, microprocessors and other electronic units capable of performing the functions described in this application. Or it may be realized within a combination thereof.

With respect to software realization, the techniques described herein can be realized by executing the functional modules described herein (eg, processes, functions, etc.). The software code may be stored in storage and executed by the processor. The storage device may be implemented inside the processor or outside the processor.

Specifically, the first processor 1303 in the network device 110 is further configured to realize the method described in the first embodiment described above when a computer program is executed, and duplicate description is omitted in the embodiments of the present invention. do.

With reference to FIG. 14, the configuration of the network device 140 according to the embodiment of the present invention is shown, and the network device 140 is
A decapsulation unit 1401 configured to decapsulate a received transmission message and acquire a data block stream carried on the transmission message.
A first restoration unit 1402 configured to reverse-decrypt the data block according to a predetermined code restoration policy and acquire a bitstream corresponding to the encoding method of the original traffic data.
A second restore unit 1403 configured to restore the original traffic data from the bitstream, and
The second transmission unit 1404 is provided with the second transmission unit 1404, which is configured to transmit the original traffic data to the client.

Further, in the present embodiment, a computer storage medium in which the traffic transmission program is stored is provided, and the traffic transmission program is executed by at least one processor, whereby the description method of the second embodiment is realized. It is possible. For a specific description of the computer storage medium, the description of the fourth embodiment may be referred to, and duplicate description will be omitted in the examples of the present invention.

With respect to the network device 140 and the computer storage medium, with reference to FIG. 15, a specific hardware structure of the network device 140 according to the embodiment of the present invention is shown, and the corresponding configuration includes the second network interface 1501 and the second. A storage device 1502 and a second processor 1503 may be provided, and each component is connected together by a bus system 1504. It should be noted that the bus system 1504 should be understood as being used to realize the connection and communication between these components. The bus system 1504 may include not only a data bus but also a power bus, a control bus and a status signal bus. In order to clarify the explanation, various buses are collectively referred to as a bus system 1504 in FIG.
The second network interface 1501 is used for receiving and transmitting signals in the process of transmitting and receiving with other external network elements.
The second storage device 1502 is configured to store a computer program that can be executed by the second processor 1503.
The second processor 1503
When the computer program is executed,
Decapsulating the received transmission message and acquiring the data blockstream carried on the transmission message,
Decoding the data block in the reverse direction according to a predetermined code restoration policy to acquire a bitstream corresponding to the encoding method of the original traffic data.
Restoring the original traffic data from the bitstream,
It is configured to realize the transmission of the original traffic data to the client.
It should be noted that, in order to understand that the components of the specific hardware structure of the network device 140 according to the present embodiment are similar to the corresponding parts of the fourth embodiment, duplicate explanations will be given in the embodiments of the present invention. Omit.

Based on the above-described embodiment, the embodiment of the present invention further provides a traffic transmission system including the network device 110 described in the above-mentioned four examples and the network device 140 described in the fifth embodiment. It should be noted that this system can realize the flow described in the third embodiment described above, and duplicate description will be omitted in the embodiments of the present invention.

It should be noted that the technical proposals described in the examples of the present invention can be combined in any combination as long as they do not contradict each other.

The above-mentioned contents are merely specific examples of the present application and do not limit the scope of protection of the present application. Those skilled in the art can readily consider changes or even substitutions within the technical scope disclosed in the present invention, and all of these changes or substitutions should be included within the scope of the invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims (25)

To acquire at least one data block by tile-dividing the data of the message waiting to be transmitted by a predetermined length, and
Encapsulating each of the data blocks according to a predetermined message format to acquire at least one message waiting to be transmitted.
Analyzing each transmission waiting message and determining the transmission direction of each transmission waiting message.
Scheduling transmission waiting messages of the same transmission direction and the same processing method to the same traffic flow, and transmitting the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission speed, and the like.
Traffic transmission method. When the data of the transmission waiting traffic is a bit stream received by the physical interface, it is possible to tile the transmission waiting message data by a predetermined length and acquire at least one data block.
The bitstream received by the physical interface is tiled by the predetermined length to acquire at least one data block, or
After encoding the bitstream received by the physical interface according to a predetermined coding policy, the encoded bitstream is tiled by the predetermined length to acquire at least one data block. ,
The traffic transmission method according to claim 1. When the data of the transmission waiting traffic is the message data received by the user interface, it is possible to tile the transmission waiting message data by a predetermined length and acquire at least one data block.
Encoding the message data according to a predetermined coding policy,
To adjust the transmission speed of the coded message data and buffer the coded message data,
The buffered encoded message data is tiled by the predetermined length to acquire at least one data block, and the like.
The traffic transmission method according to claim 1. When the encoded bitstream or the encoded message data is a 66-bit stream, the predetermined length is an integral multiple of 66 bits.
When the encoded bitstream or the encoded message data is a 65-bit stream, the predetermined length is an integral multiple of 65 bits.
When the encoded bitstream or the encoded message data is a 10-bit stream, the predetermined length is an integral multiple of 10 bits.
The traffic transmission method according to claim 2 or 3. Encapsulating each of the data blocks according to a predetermined message format to obtain at least one message waiting to be transmitted can be obtained.
Each of the data blocks is encapsulated according to the Ethernet message format, and the acquisition of at least one pending Ethernet message is included.
The traffic transmission method according to claim 1. Encapsulating each of these data blocks according to the Ethernet message format to obtain at least one pending Ethernet message is possible.
The Multiprotocol Label Switching (MPLS) protocol label for each data block is encapsulated in the pending Ethernet message and the MPLS protocol label for the data block is at least one of a pseudowire label, a tunnel label and a pseudowire control word. Including that it contains,
The traffic transmission method according to claim 5. Encapsulating each of these data blocks according to the Ethernet message format to obtain at least one pending Ethernet message is possible.
The attached information of each said data block is encapsulated in the pending transmission Ethernet message, and the attached information of the data block includes at least one term of a sequence number, clock information and a time stamp value.
The traffic transmission method according to claim 5. Scheduling transmission waiting messages in the same transmission direction and the same processing method to the same traffic flow, and transmitting the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission speed may be performed.
Scheduling transmission waiting messages in the same transmission direction and the same processing method to the same traffic flow according to the round-robin scheduling method.
Sending the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission rate, and the like.
The traffic transmission method according to claim 1. Scheduling transmission waiting messages in the same transmission direction and the same processing method to the same traffic flow, and transmitting the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission speed may be performed.
When there is only one traffic flow that can be scheduled / output out of multiple traffic flows, the traffic flow that can be scheduled / output is scheduled by the multiple selection method, and the dedicated network interface or network interface is used according to the predetermined transmission speed. Including sending to a dedicated time slot,
The traffic transmission method according to claim 1. When at least one physical signal is received from the dedicated network interface or the dedicated time slot of the network interface, each of the physical signals is restored to message data.
Analyzing the message data corresponding to each of the physical signals to determine the transmission direction of at least one of the message data.
After scheduling message data of the same transmission direction and the same processing method to the same traffic flow, the traffic flow is traffic-mapped and transmitted by a dedicated network interface or a dedicated time slot of the network interface.
The traffic transmission method according to any one of claims 1 to 9. To decapsulate a received transmission message and acquire a stream of data blocks carried on the transmission message.
Decoding the data block in the reverse direction according to a predetermined code restoration policy to acquire a bitstream corresponding to the encoding method of the original traffic data.
Restoring the original traffic data from the bitstream,
Including sending the original traffic data to the client.
Traffic transmission method. It includes a tile division unit, an encapsulation unit, an analysis unit, a scheduling unit, and a first transmission unit.
The tile division unit is configured to tile the data of the message waiting to be transmitted by a predetermined length and acquire at least one data block.
The encapsulation unit is configured to encapsulate each of the data blocks according to a predetermined message format, acquire at least one transmission waiting message, and transmit the transmission waiting message to the analysis unit according to a predetermined transmission speed. When,
The analysis unit is configured to analyze each transmission waiting message and determine the transmission direction of each transmission waiting message.
The scheduling unit is configured to schedule transmission waiting messages of the same transmission direction and the same processing method to the same traffic flow.
The first transmitter is configured to transmit the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission rate.
Network device. When the data of the transmission waiting traffic is a bit stream received by the physical interface, the tile division unit may be used.
The bitstream received by the physical interface is tiled by the predetermined length and configured to acquire at least one data block, or
After encoding the bitstream received by the physical interface according to a predetermined coding policy, the encoded bitstream is tiled by the predetermined length to acquire at least one data block. ,
The network device according to claim 12. When the data of the transmission waiting traffic is the message data received by the user interface, the tile division unit may be used.
The message data is encoded according to a predetermined coding policy, and the message data is encoded according to a predetermined coding policy.
The transmission speed of the coded message data is adjusted, the coded message data is buffered, and the coded message data is buffered.
The buffered encoded message data is tiled by the predetermined length to acquire at least one data block.
The network device according to claim 12. When the encoded bitstream or the encoded message data is a 66-bit stream, the predetermined length is an integral multiple of 66 bits.
When the encoded bitstream or the encoded message data is a 65-bit stream, the predetermined length is an integral multiple of 65 bits.
When the encoded bitstream or the encoded message data is a 10-bit stream, the predetermined length is an integral multiple of 10 bits.
The network device according to claim 13 or 14. The encapsulation section is
Each said data block is individually encapsulated according to the Ethernet message format and configured to acquire at least one pending Ethernet message.
The network device according to claim 12. The encapsulation section is
The Multiprotocol Label Switching (MPLS) protocol label for each data block is encapsulated in the pending Ethernet message and the MPLS protocol label for the data block is at least one of a pseudowire label, a tunnel label and a pseudowire control word. Is configured to contain,
The network device according to claim 16. The encapsulation section is
The attached information of each data block is encapsulated in the pending transmission Ethernet message, and the attached information of the data block is configured to include at least one term of a sequence number, clock information, and time stamp value.
The network device according to claim 16. The scheduling unit
According to the round-robin scheduling method, transmission waiting messages of the same transmission direction and the same processing method are scheduled to the same traffic flow.
It is configured to send the traffic flow to a dedicated network interface or a dedicated time slot of the network interface according to a predetermined transmission rate.
The network device according to claim 12. The scheduling unit
When there is only one traffic flow that can be scheduled / output out of multiple traffic flows, the traffic flow that can be scheduled / output is scheduled by the multiple selection method, and the dedicated network interface or network interface is used according to the predetermined transmission speed. Configured to send to a dedicated time slot,
The network device according to claim 12. Further comprising a restorer configured to restore each of the physical signals to message data upon receipt of at least one physical signal from the dedicated network interface or the dedicated time slot of the network interface.
The analysis unit is further configured to analyze the message data corresponding to each of the physical signals and determine the transmission direction of at least one of the message data.
The scheduling unit further schedules message data of the same transmission direction and the same processing method to the same traffic flow, and then traffic-maps the traffic flow and transmits the traffic flow by a dedicated network interface or a dedicated time slot of the network interface. Composed,
The network device according to any one of claims 12 to 20. A decapsulation unit configured to decapsulate a received transmission message and acquire a stream of data blocks carried on the transmission message.
A first restore unit configured to reversely decode the data block according to a predetermined code restore policy and acquire a bitstream corresponding to the original traffic data encoding method.
A second restore unit configured to restore the original traffic data from the bitstream,
A second transmitter configured to send the original traffic data to the client.
Network device. Equipped with a first network interface, a first storage device and a first processor,
The first network interface is configured to send and receive signals during information transmission and reception with other external network elements.
The first storage device is configured to store a computer program that can be executed by the first processor.
The first processor is configured to realize the traffic transmission method according to any one of claims 1 to 10 when the computer program is executed.
Network device. Equipped with a second network interface, a second storage device and a second processor,
The second network interface is configured to send and receive signals during information transmission and reception with other external network elements.
The second storage device is configured to store a computer program that can be executed by the second processor.
The second processor is configured to realize the traffic transmission method according to claim 11 when the computer program is executed.
Network device. When the traffic transmission program is stored and the traffic transmission program is executed on at least one processor, the traffic transmission method according to any one of claims 1 to 10 or claim 11 is realized.
Computer storage medium.

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