WO2024082960A1

WO2024082960A1 - Data sending method and apparatus, data receiving method and apparatus, electronic device, chip, and storage medium

Info

Publication number: WO2024082960A1
Application number: PCT/CN2023/122964
Authority: WO
Inventors: 赵东艳; 张继光; 谢勇; 池颖英; 郑哲; 王连忠; 刘瑞; 刘国静; 崔文朋; 周晓露; 刘小群; 贾晓光; 陈飞; 李艳波; 赵文仙; 于秀丽
Original assignee: 北京智芯微电子科技有限公司; 国家电网有限公司
Priority date: 2022-10-20
Filing date: 2023-09-28
Publication date: 2024-04-25
Also published as: CN115378874A; CN115378874B

Abstract

Disclosed in the present invention are a data sending method and apparatus, a data receiving method and apparatus, an electronic device, a chip, and a storage medium. The method comprises: after receiving a first express message and when a second express message is being sent by means of an express service interface indicated by a second interface identifier, sending a first steal control signal on the basis of first tuple information of the first express message; and according to the first steal control signal, controlling the second express message to pause sending by means of the express service interface indicated by the second interface identifier, and controlling the first express message to start sending by means of an express service interface indicated by a first interface identifier. A plurality of express service interfaces and a steal control signal carrying a steal indication and an interface identifier are designed for different levels of time delay and jitter requirements, a frame structure does not need to be changed, and the frame structure is consistent with a frame structure defined by standards, such that the probability of an opposite end not being able to receive a data stream is reduced, and the universality is improved.

Description

Data sending and receiving method, device, electronic device, chip and storage medium

Technical Field

The present invention relates to the field of communication technology, and in particular to a data sending and receiving method, device, electronic device, chip and storage medium.

Background technique

The frame preemption mechanism is introduced in Time-Sensitive Networking (TSN). In the frame preemption mechanism defined by the Institute for Electrical and Electronics Engineers (IEEE) 802.3br and IEEE 802.1Qbu, the frame preemption mechanism will give two MAC service interfaces, namely Preemptable MAC (pMAC) and Express MAC (eMAC). Preemptible data can be preempted by fast data during transmission. After entering the data stack, it waits for the fast data transmission to complete before the preemptible data can be transmitted again.

When a time-sensitive network is required to transmit data streams with a priority greater than two, such as transmitting not only a time-triggered stream (TT stream) but also a rate-limited stream (RC stream), the frame preemption mechanism implemented based on the pMAC service interface and the eMAC service interface cannot meet the latency requirements. Therefore, in some related technologies, first, the data frames are configured into eMAC frames, tpMAC frames, and ntpMAC frames according to their respective priorities and latency requirements; second, the pMAC layer is virtualized into a tpMAC layer and a ntpMAC layer, and the original eMAC layer is kept unchanged, so that three MAC independent sublayers are obtained to transmit data frames of different priorities; finally, the latency requirements of multiple priorities are met by changing the frame structure and the frame preemption frame mapping rules, for example: by adding one bit (the ninth bit) on the basis of eight bits to complete the mapping of various priorities to each MAC independent sublayer, the ninth bit (the highest bit) is defined to be combined with the lower eight bits, and different values are mapped to different MAC independent sublayers. Compared with the frame preemption mechanism defined in IEEE Std 802.1Qbu and IEEE Std 802.3br standards, this related technology can, to a certain extent, reduce the delay of tpMAC frames while ensuring the delay of eMAC frames.

However, the changed frame structure in the related art is different from the frame structure defined in the standard, and the other end may not be able to receive the data stream with the changed frame structure.

Summary of the invention

The embodiments of this specification are intended to solve at least one of the technical problems in the related art to a certain extent. To this end, the embodiments of this specification propose a data sending and receiving method, device, electronic device, chip and storage medium.

An embodiment of the present specification provides a data sending method, the method comprising: when a first fast message is received and a second fast message is being sent, sending a first intercept control signal based on the first tuple information of the first fast message; wherein the first fast message and the second fast message belong to fast groups respectively; the first intercept control signal is accompanied by an intercept indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to a fast service interface for sending the first fast message; the second fast message is being sent through the fast service interface referred to by the second interface identifier; according to the intercept indication and the first interface identifier, controlling the second fast message to suspend sending through the fast service interface referred to by the second interface identifier, and controlling the first fast message to start sending through the fast service interface referred to by the first interface identifier.

The embodiment of the present specification provides a data receiving method, the method comprising: in the case where the received message to be processed belongs to a fast group, determining the priority of the message to be processed; wherein different priorities correspond to different first processing units; different first processing units correspond to different fast service interfaces; wherein the number of the fast service interfaces is greater than or equal to 2; diverting the message to be processed to a target processing unit corresponding to the priority of the message to be processed; wherein the target processing unit is used to determine the integrity of the message to be processed; and sending the complete fast message output by the target processing unit to the target processing unit. The data is sent to the target rapid service interface corresponding to the target processing unit.

An embodiment of the present specification provides a data sending method, which is applied to a MAC client, and the method includes: when a first fast message is received and a second fast message is being sent, a first intercept control signal is sent to a MAC merging sublayer based on the first tuple information of the first fast message; wherein the first fast message and the second fast message belong to fast groups respectively; the first intercept control signal is accompanied by an intercept indication and a first interface identifier corresponding to the first tuple information; the second fast message is being sent through a fast service interface indicated by the second interface identifier; the first intercept control signal is used to instruct the MAC merging sublayer to control the second fast message to suspend sending through the fast service interface indicated by the second interface identifier according to the intercept indication and the first interface identifier, and to control the first fast message to start sending through the fast service interface indicated by the first interface identifier.

An embodiment of the present specification provides a data sending method, which is applied to the MAC merging sublayer, and the method includes: when a first fast message is received and a second fast message is being sent, a first intercept control signal is received; wherein the first intercept control signal is determined based on the first tuple information of the first fast message; the first fast message and the second fast message belong to a fast group respectively; the first intercept control signal is accompanied by an intercept indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to a fast service interface for sending the first fast message; wherein the second fast message is being sent through the fast service interface referred to by the second interface identifier; according to the intercept indication and the first interface identifier, the second fast message is controlled to suspend sending through the fast service interface referred to by the second interface identifier, and the first fast message is controlled to start sending through the fast service interface referred to by the first interface identifier.

An embodiment of the present specification provides a chip, wherein the chip has a first fast service interface, a second fast service interface, and a preemptible service interface; wherein the first fast service interface and the second fast service interface are located between a MAC merging sublayer and a MAC client, so as to be used for transmitting fast messages between the MAC merging sublayer and the MAC client; the preemptible service interface is located between the MAC merging sublayer and the MAC client, so as to be used for transmitting preemptible messages between the MAC merging sublayer and the MAC client; the MAC merging sublayer provides a MAC merging service interface to the MAC client; wherein the MAC merging service interface is used to receive a preemption control signal sent by the MAC client, and the preemption control signal is accompanied by a preemption indication and an interface identifier; wherein the interface identifier and the preemption indication are used to determine a target service interface capable of transmitting messages among the first fast service interface, the second fast service interface, and the preemptible service interface.

An embodiment of the present specification provides a data sending device, which includes: a control signal sending module, which is used to send a first intercept control signal based on the first tuple information of the first fast message when a first fast message is received and a second fast message is being sent; wherein the first fast message and the second fast message belong to fast groups respectively; the first intercept control signal is accompanied by an intercept indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to a fast service interface for sending the first fast message; the second fast message is being sent through the fast service interface referred to by the second interface identifier; a message sending control module, which is used to control the second fast message to suspend sending through the fast service interface referred to by the second interface identifier, and control the first fast message to start sending through the fast service interface referred to by the first interface identifier according to the intercept indication and the first interface identifier.

The embodiment of the present specification provides a data receiving device, which includes: a priority determination module, which is used to determine the priority of the message to be processed when the received message to be processed belongs to a fast group; wherein different priorities correspond to different first processing units; different first processing units correspond to different fast service interfaces; wherein the number of the fast service interfaces is greater than or equal to 2; a message diversion module, which is used to divert the message to be processed to a target processing unit corresponding to the priority of the message to be processed; wherein the target processing unit is used to determine the integrity of the message to be processed; and a message sending module, which is used to send the complete fast message output by the target processing unit to the target fast service interface corresponding to the target processing unit.

The embodiment of the present specification provides a data sending device, which is applied to a MAC client, and the device includes: a preemption signal sending module, which is used to send a second fast message to the MAC merging sublayer based on the first tuple information of the first fast message when a first fast message is received and a second fast message is being sent. A preemption control signal; wherein, the first fast message and the second fast message belong to fast groups respectively; the first preemption control signal is accompanied by a preemption indication and a first interface identifier corresponding to the first tuple information; the second fast message is being sent through the fast service interface indicated by the second interface identifier; the first preemption control signal is used to instruct the MAC merging sublayer to control the second fast message to suspend sending through the fast service interface indicated by the second interface identifier according to the preemption indication and the first interface identifier, and to control the first fast message to start sending through the fast service interface indicated by the first interface identifier.

The embodiment of the present specification provides a data sending device, which is applied to the MAC merging sublayer, and the device includes: a preemption signal receiving module, which is used to receive a first preemption control signal when a first fast message is received and a second fast message is being sent; wherein the first preemption control signal is determined based on the first tuple information of the first fast message; the first fast message and the second fast message belong to a fast group respectively; the first preemption control signal is accompanied by a preemption indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to a fast service interface for sending the first fast message; wherein the second fast message is being sent through the fast service interface referred to by the second interface identifier; a message sending control module, which is used to control the second fast message to suspend sending through the fast service interface referred to by the second interface identifier according to the preemption indication and the first interface identifier, and control the first fast message to start sending through the fast service interface referred to by the first interface identifier.

An embodiment of the present specification provides an electronic device, including a transceiver, a processor and a memory, wherein the memory is used to store a computer program, and the processor calls the computer program to execute the method described in any of the above embodiments.

An embodiment of the present specification provides a chip, which includes at least one processor, an interface circuit and a memory. The memory, the interface circuit and the at least one processor are interconnected through lines. A computer program is stored in the memory. When the computer program is executed by the at least one processor, the chip implements the method described in any of the above embodiments.

An embodiment of the present specification provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the method described in any of the above embodiments is implemented.

An embodiment of the present specification provides a computer program product, wherein the computer program product includes instructions, and when the instructions are executed by a processor of an electronic device, the electronic device is enabled to perform the method steps in the above embodiment.

In the implementation mode of this specification, when a first fast message is received and a second fast message is being sent through a fast service interface indicated by a second interface identifier, a first interception control signal is sent based on the first tuple information of the first fast message; the first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information; thereby, according to the interception indication and the first interface identifier, the fast service interface indicated by the second interface identifier of the second fast message is controlled to suspend sending, and the first fast message is controlled to start sending through the fast service interface indicated by the first interface identifier. By designing multiple fast service interfaces according to different levels of delay and jitter requirements, and interception control signals carrying interception indications and interface identifiers, there is no need to change the frame structure, which is consistent with the frame structure defined by the standard, which not only reduces the probability of the other end being unable to receive the data stream, but also improves its versatility.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1a is a schematic diagram of the working principle of IEEE802.1Qbv in the related technology provided by the embodiment of this specification.

FIG. 1 b is a schematic diagram of an implementation of a frame preemption mechanism in a related art provided in an embodiment of this specification.

FIG. 1c is a schematic diagram of an implementation of a frame preemption mechanism provided in an embodiment of this specification.

FIG. 1d is a schematic diagram of an implementation of a frame preemption mechanism provided in an embodiment of this specification.

FIG. 1e is a schematic diagram of an implementation of a frame preemption mechanism provided in an embodiment of this specification.

FIG. 2 is a flow chart of a data sending method provided in an embodiment of the present specification.

FIG3 is a flow chart of a data sending method provided in an embodiment of the present specification.

FIG. 4 is a flow chart of a data sending method provided in an embodiment of the present specification.

FIG. 5 is a flow chart of a data sending method provided in an embodiment of the present specification.

FIG. 6 is a flow chart of a data sending method provided in an embodiment of the present specification.

FIG. 7 is a flow chart of a data sending method provided in an embodiment of the present specification.

FIG. 8 is a flow chart of a data receiving method provided in an embodiment of the present specification.

FIG. 9 is a flow chart of a data receiving method provided in an embodiment of the present specification.

FIG. 10 is a flow chart of a data receiving method provided in an embodiment of the present specification.

FIG. 11 is a flow chart of a data receiving method provided in an embodiment of the present specification.

FIG. 12 a is a schematic diagram of the structure of a chip provided in an embodiment of this specification.

FIG. 12 b is a schematic diagram of the structure of a chip provided in an embodiment of this specification.

FIG. 13 is a schematic diagram of the structure of the MAC layer provided in an embodiment of the present specification.

FIG. 14 is a schematic diagram of the structure of the MAC merging sublayer provided in an embodiment of the present specification.

FIG. 15 is a schematic diagram of the framework of a data sending device provided in an embodiment of this specification.

FIG. 16 is a schematic diagram of the framework of a data receiving device provided in an embodiment of this specification.

FIG. 17 is a schematic diagram of the framework of a data sending device provided in an embodiment of this specification.

FIG. 18 is a schematic diagram of the framework of a data sending device provided in an embodiment of this specification.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

In related technologies, TSN consists of a series of technical standards, which are mainly divided into three parts: clock synchronization, data flow scheduling, and network and user configuration. Among them, IEEE 802.1Qbv and IEEE 802.1Qbu are the core standards for data flow scheduling.

IEEE 802.1Qbv adopts the Time Awareness Shaper (TAS) scheduling mechanism, which is achieved by adding gating when the message is out of the queue. As shown in Figure 1a, Qbv periodically scans the pre-set gating list and controls the transmission of the queue according to the switch status of each gate in the gating list. Through control, after the scheduled time window expires, the queue where the expected traffic is located opens the door and the expected traffic is released; while in the same time window, the queue where other unexpected traffic is located closes the door and the unexpected traffic is blocked. The TAS scheduling algorithm eliminates the possibility of expected traffic being blocked by unexpected traffic, reducing data transmission delay and jitter.

In the TAS mechanism, in order to ensure that the network is idle before data transmission, it is necessary to set the protection bandwidth. The protection bandwidth is set to the maximum Ethernet frame transmission length to ensure that the network will not be occupied in the worst case.

There are two problems with the TAS mechanism: (1) Bandwidth waste: the protected bandwidth cannot be used for data transmission, resulting in bandwidth waste; (2) Priority inversion: when the MAC layer is shared, when a high-priority frame needs to be transmitted, a low-priority frame happens to be transmitted. In this case, the high-priority frame can only start to be transmitted after the low-priority frame is transmitted. Therefore, the 802.1Qbu and IEEE 802.3 working groups of TSN jointly developed the IEEE 802.3br, the preemptive MAC mechanism. The preemptive MAC implementation mechanism is shown in Figure 1b. The frame preemption mechanism divides a given export into two MAC service interfaces, namely the preemptive Preemptable MAC (pMAC) and Express MAC (eMAC). pMAC data transmission can be preempted by eMAC, and after entering the data stack, it waits for eMAC data transmission to complete before pMAC data transmission resumes.

Please continue to refer to Figure 1b. Queue Q7 corresponds to pMAC, and queue Q1 corresponds to eMAC. When Q7 data is being transmitted, Q1 data arrives. When certain conditions are met, Q7 transmission is preempted by Q1. When Q1 data transmission is completed, Q7 data can continue to be transmitted. Certain conditions refer to: pMAC has at least 64 bytes of data left to be transmitted and at least 60 bytes of data have been transmitted. Through the frame preemption mechanism, the protection bandwidth can be reduced to the shortest low-priority frame segment. In the worst case, the low-priority frame segment can also be completed before the next high-priority frame transmission.

In addition to the transmission of time-triggered flows (TT flows), TSN networks also have rate-limited flows (RC flows) and best-effort flows (BE flows). However, in related technologies, TT flows are usually viewed in isolation and lower-priority real-time flows, such as RC flows, are ignored, resulting in TT flow configurations that may increase the worst-case latency and jitter of RC flows, causing the service quality of RC flows to degrade or even be interrupted. How to maximize the communication performance of RC flows while ensuring deterministic real-time communication of TT flows; even in the case of multiple TT flows and RC flows, each flow needs to distinguish different priority levels based on actual needs to provide more fine-grained service guarantees. Solving the above problems is challenging for current TSN technology implementations.

Based on this, the implementation method of this specification provides a chip. The chip has a first fast service interface, a second fast service interface, and a preemptible service interface. The first fast service interface and the second fast service interface are located between the MAC merging sublayer and the MAC client to transmit fast messages between the MAC merging sublayer and the MAC client. The preemptible service interface is located between the MAC merging sublayer and the MAC client to transmit preemptible messages between the MAC merging sublayer and the MAC client. The MAC merging sublayer provides a MAC merging service interface to the MAC client. The MAC merging service interface is used to receive a preemption control signal sent by the MAC client, and the preemption control signal is accompanied by a preemption indication and an interface identifier; the interface identifier and the preemption indication are used to determine the target service interface that can transmit the message among the first fast service interface, the second fast service interface, and the preemptible service interface.

The implementation method of this specification proposes a data sending method that can realize multi-level preemption for the chip. Please refer to Figure 1c. The first fast service interface can be recorded as the e1MAC service interface, the second fast service interface can be recorded as the e0MAC service interface, and the preemptible service interface can be recorded as the pMAC service interface. According to the delay and jitter performance, they are pMAC, e0MAC, and e1MAC from low to high. The preemption order of the multi-level MAC service interface is from high to low: e1MAC can preempt e0MAC and pMAC; e0MAC can preempt pMAC. During the transmission of a low-priority message, a high-priority message arrives, then the low-priority message needs to wait for the high-priority message to be transmitted, and then the low-priority message is transmitted again. In this example, the two-level frame preemption method of eMAC and pMAC in the related technology is upgraded to a multi-level frame preemption method. For fast packet data streams, the transmission of data streams of each priority level can be accurately realized in strict accordance with the actual multiple delay levels and jitter level requirements, providing more fine-grained delay and jitter performance guarantees. For example, when time-triggered flow (TT flow), rate-limited flow (RC flow), and best-effort flow (BE flow) need to be transmitted in a TSN network, the TT flow can be configured to be transmitted through the e1MAC service interface, the RC flow can be configured to be transmitted through the e0MAC service interface, and the BE flow can be configured to be transmitted through the pMAC service interface.

The implementation method of this specification proposes a scenario example of a data transmission method that can realize multi-level preemption for the chip. Please refer to Figure 1d. The chip may include an e2MAC service interface, an e1MAC service interface, an e0MAC service interface, and a pMAC service interface. According to the delay and jitter performance, they are pMAC, e0MAC, e1MAC, and e2MAC from low to high. The preemption order of the multi-level MAC service interface is from high to low: e2MAC can preempt e1MAC, e0MAC, and pMAC; e1MAC can preempt e0MAC and pMAC; e0MAC can preempt pMAC.

In this scenario example, a time-triggered flow (TT flow) and a rate-limited flow (RC flow) need to be transmitted in the TSN network. Exemplarily, the TT flow includes a TT1 data flow required by the first delay level and a TT2 data flow required by the second delay level. The first delay level takes precedence over the second delay level. At this time, the TT1 data flow can be configured to be transmitted via the e2MAC service interface, the TT2 data flow can be configured to be transmitted via the e1MAC service interface, and the RC flow can be configured to be transmitted via the e0MAC service interface. Through the method in this scenario example, the communication performance of the RC flow can be guaranteed while satisfying the deterministic real-time communication of the TT flow.

In this scenario example, a time-triggered stream (TT stream) needs to be transmitted in the TSN network. For example, the TT stream includes TT1 required by the first latency level. Data flow, TT2 data flow required by the second delay level, and TT3 data flow required by the third delay level. The first delay level takes precedence over the second delay level, and the second delay level takes precedence over the third delay level. At this time, the TT1 data flow can be configured to be transmitted through the e2MAC service interface, the TT2 data flow can be configured to be transmitted through the e1MAC service interface, and the TT3 data flow can be configured to be transmitted through the e0MAC service interface. Through the method in this scenario example, more fine-grained delay and jitter performance guarantees can be provided for multiple TT flows.

The implementation method of this specification proposes another scenario example of a data transmission method that can realize multi-level preemption for the chip. Please refer to Figure 1e. The chip may include an e7MAC service interface, an e6MAC service interface, an e5MAC service interface, an e4MAC service interface, an e3MAC service interface, an e2MAC service interface, an e1MAC service interface, an e0MAC service interface, and a pMAC service interface. According to the delay and jitter performance from low to high, they are pMAC, e0MAC, e1MAC, e2MAC, e3MAC, e4MAC, e5MAC, e6MAC, and e7MAC. The preemption order of the multi-level MAC service interface from high to low is: e7MAC can preempt e6MAC, e5MAC, e4MAC, e3MAC, e2MAC, e1MAC, e0MAC and pMAC; e6MAC can preempt e5MAC, e4MAC, e3MAC, e2MAC, e1MAC, e0MAC and pMAC; e5MAC can preempt e4MAC, e3MAC, e2MAC, e1MAC, e0MAC and pMAC; e4MAC can preempt e3MAC, e2MAC, e1MAC, e0MAC and pMAC; e3MAC can preempt e2MAC, e1MAC, e0MAC and pMAC; e2MAC can preempt e1MAC, e0MAC and pMAC; e1MAC can preempt e0MAC and pMAC; e0MAC can preempt pMAC.

In this scenario example, the network device can divide the messages into multiple priorities, such as 8 priorities, or 16 priorities. This scenario example does not limit this. In this scenario example, the network device divides the data frames into 8 priorities, including priorities 0 to 7, as an example. Among them, the larger the priority value, the higher the priority. The network device may include 8 egress port queues, each of which is used to cache data frames of one priority. Please continue to refer to Figure 1e. The 8 egress port queues can be recorded as Q0, Q1, Q2, Q3, Q4, Q5, Q6, and Q7 respectively.

In this scenario example, eight priority data streams need to be transmitted in the TSN network, which are respectively recorded as Q0 data stream, Q1 data stream, Q2 data stream, Q3 data stream, Q4 data stream, Q5 data stream, Q6 data stream, and Q7 data stream.

The process of multi-level preemptive nested scheduling and sending is explained by way of example.

During the transmission of Q0 data stream through the e0MAC service interface, the Q1 data stream is received and the MAC client sends a preemption control signal hold-1. According to the preemption control signal hold-1, the transmission of Q0 data stream is suspended and the Q1 data stream is started to be sent through the e1MAC service interface.

During the transmission of Q1 data stream through the e1MAC service interface, Q2 data stream is received and the MAC client sends a hold control signal hold-2. According to the hold control signal hold-2, the transmission of Q1 data stream is suspended and Q2 data stream is started to be sent through the e2MAC service interface.

During the transmission of the Q2 data stream through the e2MAC service interface, the Q3 data stream is received and the MAC client sends a hold control signal hold-3. According to the hold control signal hold-3, the transmission of the Q2 data stream is suspended and the Q3 data stream is started to be sent through the e3MAC service interface.

During the transmission of the Q3 data stream through the e3MAC service interface, the Q4 data stream is received and the MAC client sends a hold control signal hold-4. According to the hold control signal hold-4, the transmission of the Q3 data stream is suspended and the Q4 data stream is started to be sent through the e4MAC service interface.

During the transmission of Q4 data stream through the e4MAC service interface, Q5 data stream is received and the MAC client sends a hold control signal hold-5. According to the hold control signal hold-5, the transmission of Q4 data stream is suspended and Q5 data stream is started to be sent through the e5MAC service interface.

During the transmission of the Q5 data stream through the e5MAC service interface, the Q6 data stream is received and the MAC client sends a hold control signal hold-6. According to the hold control signal hold-6, the transmission of the Q5 data stream is suspended and the Q6 data stream is started to be sent through the e6MAC service interface.

During the transmission of the Q6 data stream through the e6MAC service interface, the Q7 data stream is received and the MAC client sends a hold control signal hold-7. According to the hold control signal hold-7, the transmission of the Q6 data stream is suspended and the Q7 data stream is started to be sent through the e7MAC service interface.

After completing the transmission of the Q7 data stream through the e7MAC service interface, the MAC client sends a release control signal release-7, and starts to continue sending the Q6 data stream through the e6MAC service interface according to the release control signal release-7.

After completing the transmission of the Q6 data stream through the e6MAC service interface, the MAC client sends a release control signal release-6, and starts to continue sending the Q5 data stream through the e5MAC service interface according to the release control signal release-6.

After completing the transmission of the Q5 data stream through the e5MAC service interface, the MAC client sends a release control signal release-5, and starts to continue sending the Q4 data stream through the e4MAC service interface according to the release control signal release-5.

After completing the transmission of the Q4 data stream through the e4MAC service interface, the MAC client sends a release control signal release-4, and starts to continue sending the Q3 data stream through the e3MAC service interface according to the release control signal release-4.

After completing the transmission of the Q3 data stream through the e3MAC service interface, the MAC client sends a release control signal release-3, and starts to continue sending the Q2 data stream through the e2MAC service interface according to the release control signal release-3.

After completing the transmission of the Q2 data stream through the e2MAC service interface, the MAC client sends a release control signal release-2, and starts to continue sending the Q1 data stream through the e1MAC service interface according to the release control signal release-2.

After completing the transmission of the Q1 data stream through the e1MAC service interface, the MAC client sends a release control signal release-1, and starts to continue sending the Q0 data stream through the e0MAC service interface according to the release control signal release-1.

It can be seen that when faced with data streams that need to transmit different delays and jitter levels, the data sending method that can achieve multi-level preemption proposed for the chip in this scenario example can strictly guarantee the communication performance of traffic with multiple levels of different delays and jitter levels.

Please refer to FIG. 2 . An embodiment of the present specification provides a data sending method. The method may include the following steps.

S210. When a first fast message is received and a second fast message is being sent, a first interception control signal is sent based on the first tuple information of the first fast message.

Among them, the first fast message and the second fast message belong to fast packets respectively. The data stream transmitted by the TSN network is divided into fast packets and preemptible packets. The traffic level of the fast packet is higher than the traffic level of the preemptible packet, and the arrival of the fast packet data stream can interrupt the transmission of the preemptible packet data stream. Furthermore, the fast packet can also be divided into multiple priorities according to the delay requirement level of the data stream. The fast packet includes fast messages of at least two priorities, such as a first fast message and a second fast message. A high-priority fast message can interrupt the sending of a low-priority fast message. Exemplarily, the fast packet may include TT streams with multiple delay requirement levels, and the fast packet may include at least one TT stream with a delay requirement level and at least one RC stream.

Among them, the first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information. The first interface identifier is used to refer to the fast service interface that sends the first fast message. The second fast message is being sent through the fast service interface indicated by the second interface identifier. Specifically, the first interception control signal carries two parameters. One of the parameters is an interception indication parameter, such as hold or H; the other parameter is an interface identification parameter, such as any integer from 0 to 7. Exemplarily, the first interception control signal can be recorded as CTL.request (hold, 5). Among them, the parameter hold is used to indicate that the relatively low priority fast message being transmitted is intercepted when a relatively high priority fast message arrives, and the fast service interface corresponding to the interface identification parameter is enabled to transmit a relatively high priority fast message. Parameter 5 is used to refer to a fast service interface for transmitting a relatively high priority fast message, that is, to enable fast service interface 5 to transmit a relatively high priority fast message. It should be noted that for the preemption method implemented by dynamically adjusting the frame type of the data frame in the related art, its control signal only carries the Hold parameter, and the fast message preemption is controlled by the Hold parameter.

The first tuple information may be any tuple information such as a four-tuple information, a five-tuple information, etc. The first tuple information may include at least one of a source IP address (srcIP), a source MAC address (srcMAC), a destination IP address (destIP), a destination MAC address (destMAC), a source port (srcPort), and a destination port (destPort), and the first tuple information may also include a user-defined field (udf).

In some cases, the data stream transmitted by the TSN network needs to meet different latency requirements. Some related technologies can achieve preemption by dynamically adjusting the frame type of the data frame, but the communication performance shown when facing data streams that need to transmit multiple levels of latency and jitter requirements needs to be improved. In some related technologies, in order to ensure the delay requirements of data flows with strict delay requirements and fixed delay requirements, the frame structure and frame preemption frame mapping rules are changed, and the mapping of various priorities to each MAC independent sublayer is completed by adding one bit (ninth bit) on the basis of eight bits, and the ninth bit (highest bit) is defined to be combined with the lower eight bits respectively, but the data flow with the changed frame structure is no longer the same as the frame structure in the standard, that is, it is no longer universal, and the opposite end may not receive the data flow with the changed frame structure. Therefore, the implementation method of this specification designs a preemption control signal, and the nested scheduling of fast messages with multiple levels of different delay requirements is realized by the preemption control signal, without changing the format of the data frame, so that universality can be guaranteed. Specifically, the high layer of the MAC layer can be referred to as a MAC client. The MAC layer can be divided into some sublayers, and the sublayers can correspond to the fast service interface or the preemptible service interface. In the process of sending the second fast message through the fast service interface indicated by the second interface identifier, the MAC client receives the first fast message. The first fast message corresponds to a multi-tuple information, that is, the first tuple information. The delay requirement level of the first fast message can be determined based on the first tuple information. When the delay requirement level determined based on the first tuple information indicates that the first fast message needs to be sent first, a first preemption control signal can be generated based on the first tuple information of the first fast message, and the MAC client can send the first preemption control signal.

S220. According to the interception indication and the first interface identifier, control the second fast message to be suspended from being sent through the fast service interface indicated by the second interface identifier, and control the first fast message to start being sent through the fast service interface indicated by the first interface identifier.

Specifically, based on the interception indication carried by the first interception control signal, indicating that the first fast message needs to be transmitted, the second fast message is controlled to be suspended from being sent. Based on the first interface identifier carried by the first interception control signal, a fast service interface for sending the first fast message can be specified, so the first fast message can be controlled to be sent to the fast service interface indicated by the first interface identifier, and the first fast message is preferentially sent through the fast service interface indicated by the first interface identifier.

It should be noted that the fast service interface referred to by the second interface identifier, that is, the service interface used to send the second fast message, also belongs to the fast service interface. However, based on the multi-level nested frame preemption mechanism provided in the implementation mode of this specification, when faced with fast messages with multiple levels of different delay requirements, different fast messages with different levels of delay requirements can be sent through different fast service interfaces. Different fast service interfaces have different interface identifiers. Based on the interface identifier carried in the preemption control signal, the sending of the preempted fast message with relatively low delay requirements is suspended, and the sending of the fast message with relatively high delay requirements is given priority.

In the above data sending method, when a first fast message is received and a second fast message is being sent through a fast service interface indicated by a second interface identifier, a first interception control signal is sent based on the first tuple information of the first fast message; the first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information; thereby, according to the interception indication and the first interface identifier, the fast service interface indicated by the second interface identifier of the second fast message is controlled to suspend sending, and the first fast message is controlled to start sending through the fast service interface indicated by the first interface identifier. By designing multiple fast service interfaces according to different levels of delay and jitter requirements, and interception control signals carrying interception indications and interface identifiers, there is no need to change the frame structure, which is consistent with the frame structure defined by the standard, not only reducing the probability that the other end cannot receive the data stream and improving its versatility, but also achieving the communication performance required in the data stream scenario with multiple levels of delay and jitter requirements.

In some implementations, the priority of the first fast message is higher than the priority of the second fast message.

In some cases, the network device can divide the data stream into multiple priorities, such as 8. Data streams with priorities 0 to 3 are divided into preemptible packets, and data streams with priorities 4 to 7 are divided into fast packets. Priorities 4-7 in the fast packets cannot preempt each other. It can be seen that simply dividing the data streams into fast packets and preemptible packets and preemptible packets can preempt fast packets cannot achieve the need for fast messages with priorities 4-7 in the fast packets in actual scenarios to meet different latency requirements. Therefore, in the implementation manner of this specification, different priorities are further configured for fast messages with different latency requirements in the fast packets. Among them, the priority of the first fast message is higher than the priority of the second fast message.

In some implementations, referring to FIG. 3 , the data sending method may include the following steps.

S310: When the first fast message is sent, send a first release control signal, wherein the first release control signal is accompanied by a release indication and a first interface identifier.

S320: According to the release indication and the first interface identifier, control the second fast message to continue to be sent through the fast service interface indicated by the second interface identifier.

Among them, the first release control signal is accompanied by a release indication and a first interface identifier. Specifically, the first release control signal carries two parameters. One of the parameters is a release indication parameter, such as release or R; the other parameter is an interface identification parameter, such as any integer from 0 to 7. Exemplarily, the first release control signal can be recorded as CTL.request(release, 5). Among them, the parameter release is used to indicate that the relatively low priority fast message that is being suspended continues to be transmitted when the relatively high priority fast message is sent, and the corresponding fast service interface is enabled to transmit the relatively low priority fast message. Parameter 5 is used to refer to the fast service interface used to transmit the relatively high priority fast message, that is, to release the fast service interface 5 to transmit the relatively low priority fast message. It should be noted that for the preemption method implemented by dynamically adjusting the frame type of the data frame in the related art, its control signal only carries the release parameter, and the release parameter is used to control the continued transmission of the preemptible message.

In some cases, during the process of sending the second fast message through the fast service interface indicated by the second interface identifier, the first fast message interrupts the sending of the second fast message. When the first fast message is sent, it is necessary to continue to send the second fast message. Specifically, after the first fast message interrupts the second fast message, when the first fast message is sent, a first release control signal is sent. Based on the release indication carried by the first release control signal, it is indicated that the transmission of the first fast message is completed and the second fast message needs to be transmitted, then the second fast message is continued to be sent through the fast service interface indicated by the second interface identifier. Based on the first interface identifier carried by the first release control signal, the fast service interface that sends the first fast message can be released, so the second fast message can be sent to its corresponding fast service interface, and the fast service interface indicated by the second interface identifier is controlled to start continuing to send the second fast message.

In some embodiments, the data sending method may include the following steps: while continuing to send a second fast message through the fast service interface referred to by the second interface identifier, when a preemptible message to be sent is received, controlling the continued sending of the second fast message based on the second tuple information of the preemptible message.

Among them, the preemptible message belongs to the preemptible group. The preemptible message in the preemptible group may include the data flow corresponding to the best effort service. The priority of the preemptible message belonging to the preemptible group is lower than the priority of each fast message in the fast group. Therefore, in the process of sending the second fast message, if a preemptible message to be sent is received, since the priority of the preemptible message is lower than the priority of the second fast message, that is, the second fast message needs to be transmitted first, the second fast message will continue to be sent. The preemptible message needs to wait for the message with a higher priority to complete the sending and release the corresponding service interface before it can be sent.

Specifically, whether in the process of sending the second fast message for the first time or in the process of continuing to send the second fast message, if a preemptible message arrives, the preemptible message corresponds to the second tuple information, and the second tuple information includes at least one of the source IP address (srcIP), source MAC address (srcMAC), destination IP address (destIP), destination MAC address (destMAC), source port (srcPort), and destination port (destPort), and the second tuple information may also include a user-defined field (udf). Based on the second tuple information of the preemptible message, it is determined that the priority of the preemptible message is lower than the priority of the second fast message. Therefore, the preemptible message cannot interrupt the sending of the second fast message, and the second fast message is controlled to continue to be sent.

In some implementations, referring to FIG. 4 , the data sending method may include the following steps.

S410: When the second fast message is sent completely, send a second release control signal.

S420: Control the preemptible message to start sending according to the release indication and the second interface identifier.

Among them, the second release control signal is accompanied by a release indication and a second interface identifier. Among them, the second interface identifier is used to refer to the fast service interface for sending the second fast message. The second release control signal carries two parameters. One of the parameters is a release indication parameter, such as release or R; the other parameter is an interface identification parameter, such as any integer from 0 to 7. Exemplarily, the second release control signal can be recorded as CTL.request(release, 4). Among them, the parameter release is used to indicate that the relatively low priority fast message that is being suspended continues to be transmitted when the relatively high priority fast message is sent, and the corresponding fast service interface is enabled to transmit the relatively low priority fast message. Parameter 4 is used to refer to the fast service interface used to transmit the relatively high priority fast message, that is, to release the fast service interface 4 to transmit the relatively low priority fast message.

In some cases, a preemptible message is received during the process of sending the second fast message. When the second fast message has been sent, it is necessary to start sending the preemptible message. Specifically, after the first fast message preempts the second fast message, a first release control signal is sent when the first fast message has been sent. Based on the release indication carried by the first release control signal, it is indicated that the transmission of the first fast message is completed and the second fast message needs to be transmitted, and then the second fast message is started to continue to be sent. Based on the first interface identifier carried by the first release control signal, the fast service interface that sends the first fast message can be released, so the second fast message can be sent to the fast service interface corresponding to the second interface identifier, and the fast service interface corresponding to the second interface identifier is controlled to start continuing to send the second fast message.

In the process of sending the second fast message, a preemptible message is received. Since the priority of the preemptible message is lower than that of the second fast message, a second release control signal is sent when the second fast message is sent. Based on the release indication carried by the second release control signal, it is indicated that the transmission of the second fast message is completed and the preemptible fast message needs to be transmitted, and then the preemptible message is started to be sent. Based on the second interface identifier carried by the second release control signal, the fast service interface for sending the second fast message can be released, so the preemptible message can be sent to its corresponding preemptible service interface, and the corresponding preemptible service interface is controlled to start sending the preemptible message.

It should be noted that, in the process of sending the preemptible message, if a fast message of any priority in the fast group is received, the fast message can preempt the preemptible message, and when the fast message is sent, a release control signal is sent. Based on the release control signal, the continued sending of the preemptible message can be controlled.

In some implementations, the data sending method may include the following steps: when a third fast message to be sent is received during the process of sending the second fast message, controlling the second fast message to continue sending based on the third tuple information of the third fast message.

Wherein, the third fast message belongs to fast packet, and the priority of the second fast message is higher than the priority of the third fast message. The third tuple information includes at least one of the source IP address (srcIP), source MAC address (srcMAC), destination IP address (destIP), destination MAC address (destMAC), source port (srcPort), and destination port (destPort), and the third tuple information may also include a user-defined field (udf). Based on the third tuple information of the third fast message, it is determined that the priority of the third fast message is lower than the priority of the second fast message. Therefore, the third fast message cannot intercept the sending of the second fast message, and controls the second fast message to continue sending.

Specifically, whether in the process of initially sending the second fast message or in the process of continuing to send the second fast message, if the third fast message arrives, the third fast message corresponds to the third tuple information, and based on the third tuple information of the third fast message, it can be determined that the priority of the third fast message is lower than the priority of the second fast message. Therefore, the third fast message cannot preempt the sending of the second fast message and control the second fast message to continue sending.

In some implementations, referring to FIG. 5 , the data sending method may include the following steps.

S510: When the second fast message is sent completely, send a second release control signal.

S520: According to the release indication and the second interface identifier, control the third fast message to start sending through the fast service interface indicated by the third interface identifier.

Among them, the second release control signal is accompanied by a release indication and a second interface identifier; wherein the second interface identifier is used to refer to the fast service interface for sending the second fast message. The second release control signal carries two parameters. One of the parameters is a release indication parameter, such as release or R; the other parameter is an interface identification parameter, such as any integer from 0 to 7. Exemplarily, the second release control signal can be recorded as CTL.request(release, 4). Among them, the parameter release is used to indicate that the relatively low priority fast message that is being suspended continues to be transmitted when the relatively high priority fast message is sent, and the corresponding fast service interface is enabled to transmit the relatively low priority fast message. Parameter 4 is used to refer to the fast service interface used to transmit the relatively high priority fast message, that is, to release the fast service interface 4 to transmit the relatively low priority fast message.

In some cases, a third fast message is received during the process of sending the second fast message. When the second fast message is sent, the third fast message needs to be sent. Specifically, after the first fast message interrupts the second fast message, the third fast message needs to be sent when the first fast message is sent. A release control signal. Based on the release indication carried by the first release control signal, it indicates that the transmission of the first fast message is completed and the second fast message needs to be transmitted, so the second fast message starts to be sent. Based on the first interface identifier carried by the first release control signal, the fast service interface that sent the first fast message can be released, so the second fast message can be sent to the fast service interface corresponding to the second interface identifier, and the fast service interface referred to by the second interface identifier is controlled to start sending the second fast message.

During the process of sending the second fast message, a third fast message is received. Since the priority of the third fast message is lower than that of the second fast message, a second release control signal is sent when the second fast message is sent. Based on the release indication carried by the second release control signal, it is indicated that the transmission of the second fast message is completed and the third fast message needs to be transmitted, and then the third fast message is started to be sent. Based on the second interface identifier carried by the second release control signal, the fast service interface for sending the second fast message can be released, so the third fast message can be sent to its corresponding fast service interface (the fast service interface referred to by the third interface identifier), and the fast service interface referred to by the third interface identifier is controlled to start sending the third fast message.

In some implementations, referring to FIG. 6 , the data sending method may include the following steps.

S610: When a fourth fast message to be sent is received during the process of sending a first fast message, a second interception control signal is sent based on fourth tuple information of the fourth fast message.

S620. According to the interception indication and the fourth interface identifier, control the first fast message to be suspended from being sent, and control the fourth fast message to start being sent through the fast service interface indicated by the fourth interface identifier.

The fourth fast message belongs to a fast group, and the priority of the fourth fast message is higher than the priority of the first fast message. The second interception control signal is accompanied by an interception indication and a fourth interface identifier corresponding to the fourth tuple information. The fourth interface identifier is used to refer to a fast service interface for sending the fourth fast message.

Among them, the fourth tuple information includes at least one of the source IP address (srcIP), the source MAC address (srcMAC), the destination IP address (destIP), the destination MAC address (destMAC), the source port (srcPort), and the destination port (destPort), and the fourth tuple information may also include a user-defined field (udf). Based on the fourth tuple information of the fourth fast, it is determined that the priority of the fourth fast is higher than the priority of the first fast message. Therefore, the fourth fast message can interrupt the sending of the first fast message and control the fourth fast message to start sending.

Specifically, during the process of sending the second fast message, the first fast message is received, and a first interception control signal is sent based on the first tuple information of the first fast message. The first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information. According to the interception indication and the first interface identifier, the second fast message is controlled to be suspended from being sent, and the first fast message is controlled to start being sent through the fast service interface indicated by the first interface identifier.

Furthermore, in the process of sending the first fast message, a fourth fast message to be sent is received. Based on the fourth tuple information of the fourth fast message, the priority of the fourth fast message is determined, and the priority of the fourth fast message is higher than the priority of the first fast message, so as to send a second interception control signal. The second interception control signal is accompanied by an interception indication and a fourth interface identifier corresponding to the fourth tuple information.

Based on the interception indication carried by the second interception control signal, indicating that the fourth fast message needs to be transmitted, the first fast message is controlled to be suspended. Based on the fourth interface identifier carried by the second interception control signal, a fast service interface for sending the fourth fast message can be specified, so the fourth fast message can be controlled to be sent to the fast service interface indicated by the fourth interface identifier, and the fourth fast message is preferentially sent through the fast service interface indicated by the fourth interface identifier.

In some implementations, the first fast message is obtained by encapsulating a data stream in a queue. Before receiving the first fast message, the data sending method may include the following steps: obtaining a data stream; wherein the data stream corresponds to first tuple information. Adding the data stream to a queue corresponding to the first tuple information; wherein the queues correspond to different priorities; and the priorities corresponding to the queues correspond to the interface identifiers of the fast service interfaces.

Specifically, the first tuple information may include at least one of a source IP address (srcIP), a source MAC address (srcMAC), a destination IP address (destIP), a destination MAC address (destMAC), a source port (srcPort), and a destination port (destPort). The first tuple information may also include a user-defined Field (udf). Determine the corresponding queue based on the first tuple information corresponding to the data flow, and add the data flow to the queue corresponding to the first tuple information. Different queues have different priorities, and the priority corresponding to the queue corresponds to the interface identifier of the fast service interface.

It should be noted that the priority of the data flow in the implementation mode of this specification is bound to the queue. The priority of the data flow is determined based on the multi-tuple information corresponding to the data flow, so that the data flow can be added to the corresponding queue. The MAC client can send a preemption control signal, and the interface identifier carried by the preemption signal corresponds to the queue where the data flow is located, that is, the MAC client tells the lower layer which queue the data needs to be sent.

In some implementations, adding the data stream to the queue corresponding to the first tuple information may include: performing pattern matching on the data stream according to the first tuple information to determine the data identifier of the data stream; and adding the data stream to the queue corresponding to the data identifier of the data stream.

Specifically, a mapping strategy between data identifiers and tuple information has been pre-set. After the data stream arrives, the first tuple information of the data stream is used to perform pattern matching on the data stream, and a data identifier (Tag) is added to the data stream according to the matching result. Further, a corresponding relationship between data identifiers and queues has been pre-set, so that queue mapping can be performed based on the data identifier of the data stream, and the data stream can be added to the corresponding queue according to the data identifier of the data stream.

In some embodiments, the data transmission method may further include: encapsulating the data stream based on the priority corresponding to the queue to obtain a first fast message. The designated component of the first fast message is accompanied by the priority of the first fast message. According to the priority attached to the designated component of the first fast message, the first fast message is added to the target cache module. The target cache module is set for the fast service interface indicated by the first interface identifier.

Among them, the fast message has a fixed structure. The designated component can be any structural part in the fast message. For any queue, the data flow in any queue is encapsulated according to the priority corresponding to the any queue, and the priority corresponding to the any queue is encapsulated in the designated component of the fast message to obtain a first fast message, so that the designated component of the first fast message is accompanied by the priority of the first fast message. Further, the first fast message is obtained by encapsulating the data column in the any queue, then the priority of the queue is bound to the priority of the fast message, and the priority of the fast message determines the fast service interface that sends the fast message. Different fast service interfaces correspond to different cache modules, and the cache module is used to cache the fast messages that need to be sent by the corresponding fast service interface. Therefore, if it is necessary to send the first fast message, the first fast message is added to the target cache module set for the fast service interface indicated by the first interface identifier.

In some implementations, encapsulating a data stream based on a priority corresponding to a queue to obtain a first fast message includes: encapsulating a corresponding frame preamble code for the data stream based on a priority corresponding to the queue to obtain a first fast message.

Specifically, the first fast message is obtained by using the frame preamble corresponding to the priority corresponding to the queue. Thus, the priority of the first fast message can be determined using the frame preamble of the first fast message. It should be noted that using the frame preamble to distinguish different priorities is only one embodiment, and the actual implementation includes but is not limited to this.

In some implementations, suspending sending the second fast message may include: suspending sending the second fast message when it is determined that the sending status of the second fast message satisfies the preemption condition.

Specifically, the MAC layer also includes a MAC merging sublayer. During the process of sending the second fast message, the first fast message is received. The priority of the first fast message is higher than that of the second fast message. The first fast message can preempt the second fast message, but it is necessary to further determine whether the preemption condition is met. The preemption condition can be: at least 64 bytes of data remain untransmitted in the low-priority message and at least 60 bytes of data have been transmitted. The MAC merging sublayer determines whether the sending of the second fast message meets the preemption condition. If so, it indicates that the second fast message can be preempted, thereby suspending the sending of the second fast message.

In some implementations, the data transmission method may further include: recording a breakpoint where the second fast message is interrupted, wherein the breakpoint is used to mark the part of the second fast message that has been completed.

Specifically, the MAC merging sublayer may also be used to record the breakpoint at which the second fast message is intercepted. When the first fast message is completely transmitted, the second fast message may be continued to be transmitted with reference to the recorded breakpoint.

In some embodiments, different cache modules are provided for a fast service interface for sending a first fast message and a fast service interface for sending a second fast message. The fast packetized message includes a time-triggered service flow and/or a rate-limited service flow. Exemplarily, the fast packetized message may include a plurality of time-triggered service flows of different delay levels. Exemplarily, the fast packetized message may include a plurality of time-triggered service flows of different delay levels, and at least one rate-limited service flow. Exemplarily, the fast packetized message may include a plurality of rate-limited service flows of different delay levels.

In some implementations, a cache module is provided for a preemptible service interface that sends preemptible messages; the preemptible messages include best-effort service flows.

In some cases, although the two-level preemption mechanism of eMAC and pMAC can be adopted, when the priority of the data frame exceeds two, it cannot be guaranteed that the data frame with a high priority is transmitted first. Therefore, not only fast messages of multiple priorities require a multi-level preemption mechanism, but also preemptible messages of multiple priorities also require a multi-level preemption mechanism. Therefore, in this embodiment, the preemptible service interface can also be set to multiple. Different preemptible service interfaces can correspond to preemptible messages of different priorities, respectively. Exemplarily, the number of fast service interfaces can be 4, and 4 fast service interfaces can be used to correspond to the transmission of fast messages of 4 priorities. The number of preemptible service interfaces can be 4. 4 preemptible service interfaces can be used to correspond to the transmission of fast messages and preemptible messages of 4 priorities. Exemplarily, the number of fast service interfaces can be 6, and the number of preemptible service interfaces can be 2. I will not go into details here.

In some implementations, the number of fast service interfaces ranges from 2 to 8, and the number of preemptible service interfaces is 1.

Specifically, the number of fast service interfaces is any one of 2 to 8. The number of preemptible service interfaces is 1. Exemplarily, the number of fast service interfaces is 2, and the number of preemptible service interfaces is 1. The number of fast service interfaces is 3, and the number of preemptible service interfaces is 1. The number of fast service interfaces is 4, and the number of preemptible service interfaces is 1, and so on, which will not be repeated here.

In an embodiment of the present application, the cache module may be one or more processors, controllers or chips having a communication interface capable of implementing a communication protocol, and may also include a memory and related interfaces, a system transmission bus, etc. if necessary; the processor, controller or chip executes program-related codes to implement corresponding functions.

Please refer to FIG. 7 . An embodiment of the present specification provides a data sending method. The method may include the following steps.

S702: Acquire a data stream; wherein the data stream corresponds to first tuple information.

S704: Perform pattern matching on the data stream according to the first tuple information to determine a data identifier of the data stream.

S706: Add the data flow to the queue corresponding to the data identifier of the data flow.

The queues have different priorities; the priorities of the queues correspond to the interface identifiers of the fast service interfaces.

S708. Based on the priority corresponding to the queue, encapsulate the corresponding frame preamble code for the data stream to obtain a first fast message.

The designated component of the first express message is accompanied by the priority of the first express message.

S710: Add the first express message to a target cache module according to the priority level attached to the designated component of the first express message.

The target cache module is set for the fast service interface indicated by the first interface identifier.

S712: When a first fast message is received and a second fast message is being sent, a first interception control signal is sent based on the first tuple information of the first fast message.

Among them, the first fast message and the second fast message belong to fast groups respectively; the first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to the fast service interface that sends the first fast message; the second fast message is being sent through the fast service interface referred to by the second interface identifier.

The fast service interface for sending the first fast message and the fast service interface for sending the second fast message are respectively provided with different cache modules; the fast grouped messages include time-triggered service flows and/or rate-limited service flows. The number of fast service interfaces ranges from 2 to 8.

The priority of the first fast message is higher than the priority of the second fast message.

S714. According to the interception indication and the first interface identifier, control the second fast message to be suspended from being sent, and control the first fast message to start being sent through the fast service interface indicated by the first interface identifier.

Specifically, when it is determined that the sending of the second fast message meets the interception condition, the sending of the second fast message is suspended. The breakpoint where the second fast message is intercepted is recorded; wherein the breakpoint is used to mark the part of the second fast message that has been sent.

S716. When the first fast message is sent completely, send a first release control signal; wherein the first release control signal is accompanied by a release indication and a first interface identifier.

S718: Control the second fast message to continue to be sent according to the release indication and the first interface identifier.

S720: When a preemptible message to be sent is received during the process of sending the second express message, control the second express message to continue to be sent based on the second tuple information of the preemptible message.

The preemptible message belongs to the preemptible group. A cache module is provided for the preemptible service interface that sends the preemptible message; the preemptible message includes a best effort service flow. The number of preemptible service interfaces is 1.

S722. When the second fast message is sent, send a second release control signal; wherein the second release control signal is accompanied by a release indication and a second interface identifier; wherein the second interface identifier is used to refer to a fast service interface for sending the second fast message.

S724: Control the preemptible message to start sending according to the release indication and the second interface identifier.

S726: When a third fast message to be sent is received during the process of sending the second fast message, control the second fast message to continue to be sent based on the third tuple information of the third fast message.

The third fast message belongs to the fast group, and the priority of the second fast message is higher than the priority of the third fast message.

S728: When the second fast message is sent completely, send a second release control signal.

The second release control signal is accompanied by a release indication and a second interface identifier; wherein the second interface identifier is used to refer to a fast service interface for sending the second fast message.

S730: Control the third fast message to start sending according to the release indication and the second interface identifier.

Specifically, the third fast message is controlled to start being sent through the fast service interface indicated by the third interface identifier.

S732: When a fourth fast message to be sent is received during the process of sending the first fast message, a second interception control signal is sent based on the fourth tuple information of the fourth fast message.

Among them, the fourth fast message belongs to a fast group, and the priority of the fourth fast message is higher than the priority of the first fast message; the second interception control signal is accompanied by an interception indication and a fourth interface identifier corresponding to the fourth tuple information; wherein the fourth interface identifier is used to refer to the fast service interface for sending the fourth fast message.

S734. According to the interception indication and the fourth interface identifier, control the first fast message to be suspended from being sent, and control the fourth fast message to start being sent through the fast service interface indicated by the fourth interface identifier.

Please refer to FIG8 . An embodiment of the present specification provides a data receiving method, which may include the following steps.

S810: When the received message to be processed belongs to a fast group, determine the priority of the message to be processed.

Different priorities correspond to different first processing units. Different first processing units correspond to different fast service interfaces. The transmitted data stream is divided into fast packets and preemptible packets. The traffic level of the fast packet is higher than the traffic level of the preemptible packet, and the arrival of the fast packet data stream can interrupt the transmission of the preemptive packet data stream. Furthermore, the fast packet can also be divided into multiple priorities according to the delay requirement level of the data stream. The fast packet includes at least two priority levels of fast messages, such as a first fast message and a second fast message. A high-priority fast message can interrupt the sending of a low-priority fast message. Exemplarily, the fast packet may include TT streams of multiple delay requirement levels, and the fast packet may include at least one TT stream of a delay requirement level and at least one RC stream. When facing fast messages with multiple levels of different delay requirements, different fast messages with different levels of delay requirements are processed by different first processing units, and different first processing units correspond to different fast service interfaces, and different fast service interfaces have different interface identifiers. Among them, the number of the fast service interfaces is greater than or equal to 2.

Specifically, when the receiving end receives the message to be processed, the type of the message to be processed is determined. When it is determined that the message to be processed belongs to a fast group, since the fast group includes at least two fast messages of priority, it is necessary to determine the priority of the message to be processed. Exemplarily, the fast group can be divided into Q0 data stream, Q1 data stream, and Q2 data stream. The priority of Q2 data stream is higher than that of Q1 data stream, and the priority of Q1 data stream is higher than that of Q0 data stream. Exemplarily, the fast group can be divided into Q0 data stream, Q1 data stream, Q2 data stream, Q3 data stream, Q4 data stream, Q5 data stream, Q6 data stream, and Q7 data stream; the priority of Q7 data stream is higher than that of Q6 data stream; the priority of Q6 data stream is higher than that of Q5 data stream; the priority of Q5 data stream is higher than that of Q4 data stream; the priority of Q4 data stream is higher than that of Q3 data stream; the priority of Q3 data stream is higher than that of Q2 data stream; the priority of Q2 data stream is higher than that of Q1 data stream, and the priority of Q1 data stream is higher than that of Q0 data stream.

S820. Divert the to-be-processed message to a target processing unit corresponding to the priority of the to-be-processed message.

Among them, the target processing unit is used to determine the integrity of the message to be processed. When facing fast messages of different priorities, different fast messages of different priorities need to be processed by different first processing units. Specifically, the priority of the message to be processed corresponds to a target processing unit, and the message to be processed is diverted to the target processing unit according to the determined priority of the message to be processed. Exemplarily, the target processing unit is used to judge the frame integrity of the message to be processed. When it is judged that the message to be processed is incomplete, the target processing unit can be used to frame and verify the message to be processed to output a complete fast message.

S830. Send the complete fast message output by the target processing unit to the target fast service interface corresponding to the target processing unit.

Different first processing units correspond to different fast service interfaces. Different fast service interfaces are divided according to latency and jitter performance. Specifically, the target processing unit outputs a complete fast message. Since the fast message needs to be sent to the upper layer through the fast service interface, the complete fast message is sent to the target fast service interface corresponding to the target processing unit.

The above-mentioned data receiving method applied to the receiving end determines the priority of the message to be processed when the received message to be processed belongs to a fast group; and diverts the message to be processed to the target processing unit corresponding to the priority of the message to be processed; thereby sending the complete fast message output by the target processing unit to the target fast service interface corresponding to the target processing unit; by designing multiple fast service interfaces, it is possible to strictly guarantee the communication performance of traffic with multiple levels of different delay and jitter levels, and by setting the first processing units corresponding to different priorities, it is possible to provide more fine-grained delay and jitter performance guarantees for multiple TT flows and RC flows.

In some implementations, referring to FIG. 9 , when the received message to be processed belongs to a fast group, before determining the priority of the message to be processed, the data receiving method may further include the following steps.

S910: After receiving the message to be processed, verify the message to be processed.

S920: When the message to be processed passes verification, determine, based on the value of the first designated component in the message to be processed, that the message to be processed belongs to a fast group.

Accordingly, the priority of the message to be processed is determined, including:

S930. Determine the priority of the message to be processed based on the value of the first designated component in the message to be processed.

The fast message has a fixed structure. The first designated component may be any structural part in the fast message. Exemplarily, the first designated component may be a preamble.

Specifically, when a message to be processed is received at the receiving end, the message to be processed needs to be verified. If the verification is correct, the category to which the message to be processed belongs needs to be determined based on the value of the first designated component in the message to be processed. If the verification is wrong, the message to be processed needs to be discarded. Furthermore, since the priority of the message has been encapsulated in the first designated component, the priority of the message to be processed can be determined based on the value of the first designated component in the message to be processed.

In some implementations, the data receiving method may include: if the message to be processed fails to pass verification, discarding the message to be processed.

In some implementations, after receiving the message to be processed, verifying the message to be processed may include: verifying the message to be processed based on the value of the second designated component in the message to be processed.

In some implementations, the first designated component is a preamble; and the second designated component is a frame delimiter.

Exemplarily, multiple groups of information such as srcMAC, destMAC, srcIP, destIP, srcPort, destPort, udf (user-defined) are used to perform pattern matching on data streams; for successfully matched data streams, flow identifiers are assigned, and corresponding information, such as queue information, is associated; data streams are queued to different queues based on the flow identifiers and corresponding information; data packets in different queues are encapsulated with different frame preambles to distinguish different priorities, perform multi-level preemptive MAC nested scheduling, and merge and output the data streams.

In some implementations, referring to FIG. 10 , the data receiving method may include the following steps.

S1010: When the received message to be processed belongs to a preemptible group, determine that the message to be processed is a preemptible message.

S1020. Divert the preemptible message to the second processing unit.

S1030. Send the complete preemptible message output by the second processing unit to the preemptible service interface corresponding to the second processing unit.

Among them, the preemptible message is provided with a priority, and the priority of the preemptible message corresponds to a second processing unit. The second processing unit corresponds to a preemptible service interface. The second processing unit is used to determine the integrity of the preemptible message. Specifically, when the receiving end receives the message to be processed, the type of the message to be processed is judged, and when it is determined that the message to be processed belongs to a preemptible group, the message to be processed is determined to be a preemptible message. Further, the priority of the preemptible message corresponds to a second processing unit. The second processing unit corresponds to a preemptible service interface, and the preemptible message is diverted to the second processing unit. The second processing unit outputs a complete fast message. Since the preemptible message needs to be sent to the upper layer through the preemptible service interface, the complete preemptible message is sent to the preemptible service interface corresponding to the second processing unit.

In some embodiments, different fast service interfaces are respectively provided with different cache modules; the preemptible service interface is also provided with a cache module; the fast grouped messages include time-triggered flows and/or rate-limited flows; the preemptible grouped messages include best-effort service flows.

In some embodiments, the method for determining the integrity of the message to be processed includes at least one of the following: when the message to be processed is determined to be a complete data frame, determining that the message to be processed is complete; or, when the message to be processed is determined to be an incomplete data frame, framing the message to be processed based on the frame delimiter and the fragment count to obtain a complete data frame.

In the embodiment of the present application, the cache module and the processing unit can be one or more processors, controllers or chips with a communication interface capable of implementing a communication protocol, and can also include a memory and related interfaces, a system transmission bus, etc. if necessary; the processor, controller or chip Alternatively, the cache module and the processing unit share an integrated chip or a processor, controller, memory and other devices. The shared processor, controller or chip executes the program-related code to implement the corresponding function.

Please refer to FIG. 11 . An embodiment of the present specification provides a data receiving method. The method may include the following steps.

S1102: After receiving the message to be processed, verify the message to be processed based on the value of the second designated component in the message to be processed.

S1104: When the message to be processed passes verification, determine, based on the value of the first designated component in the message to be processed, that the message to be processed belongs to a fast group.

The first designated component is the preamble; the second designated component is the frame delimiter.

S1106: When the received message to be processed belongs to a fast group, determine the priority of the message to be processed.

Different priorities correspond to different first processing units, and different first processing units correspond to different fast service interfaces. The number of the fast service interfaces is greater than or equal to 2.

S1108. Divert the to-be-processed message to a target processing unit corresponding to the priority of the to-be-processed message.

Among them, the target processing unit is used to determine the integrity of the message to be processed; specifically, when it is determined that the message to be processed is a complete data frame, it is determined that the message to be processed is complete; when it is determined that the message to be processed is an incomplete data frame, the message to be processed is framed based on the frame delimiter and the fragment count to obtain a complete data frame.

S1110. Send the complete fast message output by the target processing unit to the target fast service interface corresponding to the target processing unit.

S1112: When the received message to be processed belongs to a preemptible group, determine that the message to be processed is a preemptible message.

The preemptible message is provided with a priority, and the priority of the preemptible message corresponds to a second processing unit; and the second processing unit corresponds to a preemptible service interface.

S1114. Divert the preemptible message to the second processing unit; wherein the second processing unit is used to determine the integrity of the preemptible message.

S1116. Send the complete preemptible message output by the second processing unit to the preemptible service interface corresponding to the second processing unit.

Different fast service interfaces are respectively provided with different cache modules; preemptible service interfaces are also provided with cache modules; fast grouped messages include time-triggered flows and/or rate-limited flows; preemptible grouped messages include best-effort service flows. The number of fast service interfaces ranges from 2 to 8, and the number of preemptible service interfaces is 1.

12a, an embodiment of the present specification provides a chip 1200, wherein the chip 1200 has a first fast service interface 1202, a second fast service interface 1204, and a preemptible service interface 1206. The first fast service interface 1202 and the second fast service interface 1204 are located between a MAC merging sublayer 1208 and a MAC client 1210, so as to transmit fast messages between the MAC merging sublayer 1208 and the MAC client 1210.

The preemptible service interface 1206 is located between the MAC merging sublayer 1208 and the MAC client 1210 to transmit preemptible messages between the MAC merging sublayer 1208 and the MAC client 1210 .

The MAC merging sublayer 1208 provides a MAC merging service interface to the MAC client 1210. The MAC merging service interface is used to receive a preemption control signal sent by the MAC client 1210, and the preemption control signal is accompanied by a preemption indication and an interface identifier; wherein the interface identifier and the preemption indication are used to determine a target service interface capable of transmitting a message among the first fast service interface, the second fast service interface, and the preemptible service interface.

Specifically, a first fast service interface 1202, a second fast service interface 1204, and a preemptible service interface 1206 are set between the MAC merging sublayer 1208 and the MAC client 1210. The first fast service interface 1202 and the second fast service interface 1204 are used to transmit fast messages between the MAC merging sublayer 1208 and the MAC client 1210. When the MAC merging sublayer 1208 receives fast messages of multiple priorities, a fast service interface for transmitting fast messages of corresponding priorities can be determined in the first fast service interface 1202 and the second fast service interface 1204. Fast messages of high priority are transmitted through the fast service interface corresponding to the high priority, and fast messages of low priority are transmitted through the fast service interface corresponding to the low priority.

The preemptible service interface 1206 is used to transmit preemptible messages between the MAC merging sublayer 1208 and the MAC client 1210. The preemptible service interface 1206 can be understood as a data channel for transmitting preemptible messages between the MAC merging sublayer 1208 and the MAC client 1210. When the MAC merging sublayer 1208 receives a preemptible message, it is transmitted to the MAC client 1210 through the preemptible service interface 1206.

The MAC merge service interface is a control interface provided by the MAC merge sublayer 1208 to the MAC client 1210. When the MAC client 1210 needs to send a message downward, the MAC client 1210 transmits a preemption control signal to the MAC merge service interface. The preemption control signal is accompanied by a preemption indication and an interface identifier; wherein the interface identifier and the preemption indication are used to determine the target service interface that can transmit the message among the first fast service interface, the second fast service interface, and the preemptible service interface. In other embodiments, the MAC client 1210 may also transmit a release control signal to the MAC merge service interface. The release control signal is accompanied by a release indication and an interface identifier; wherein the interface identifier and the release indication are used to release the service interface that has completed the message transmission.

Exemplarily, please refer to FIG. 12b, the chip has a first fast service interface (e0MAC), a second fast service interface (not shown), a third fast service interface (not shown), a fourth fast service interface (not shown), a fifth fast service interface (not shown), a sixth fast service interface (not shown), a seventh fast service interface (not shown), an eighth fast service interface (e7MAC), and a preemptible service interface (pMAC). Among them, the first fast service interface, the second fast service interface, the third fast service interface, the fourth fast service interface, the fifth fast service interface, the sixth fast service interface, the seventh fast service interface, and the eighth fast service interface are located between the MAC merging sublayer and the MAC client to transmit fast messages between the MAC merging sublayer and the MAC client. The preemptible service interface is located between the MAC merging sublayer and the MAC client to transmit preemptible messages between the MAC merging sublayer and the MAC client. The MAC merging sublayer provides a MAC merging service interface to the MAC client. Among them, the MAC merging service interface is used to receive the preemption control signal sent by the MAC client. Furthermore, there is a time synchronization client between the MAC client and the coordination sublayer, and the time synchronization client is used for time synchronization between the MAC client and the coordination sublayer to align the "pace" of various signals.

Exemplarily, the MAC client transmits the MM_CTL.request control signal to the MAC merge service interface. The MM_CTL.request control signal carries a parameter hold-x or a parameter release-x, wherein the parameter hold-x is used to indicate the holding of each level of interception, and the parameter release-x is used to indicate the release of each level of interception, and x is used to specify the service interface that performs the interception or the service interface that is released.

When a message needs to be sent, the MAC merge service interface cooperates with each PLS service interface to control the transmission and implement multi-level preemptive nested scheduling. The preemption logic implements preemption and transmission control by controlling the PLS signal. Exemplarily, the MM_CTL.request control signal can support multi-level nesting. Exemplarily illustrate the process of multiple nested data transmission: the MAC client encapsulates different preambles for data packets in different queues to distinguish different frame priorities; according to different preambles, the data enters the e0-7MAC or pMAC service interface; the MAC service interface determines whether there is a preemption demand between the interfaces. If preemption is required, the preempted breakpoint is recorded; the MAC service interface performs nested preemption; the MAC service interface continues to transmit the preempted data after the preempted data is sent; the data merging sublayer merges and outputs the nested data of different priorities sent by the MAC service interface.

For example, in the process of receiving the hold-4 signal and sending eMAC4 data, the hold-5 signal arrives, and the transmission processing interrupts the eMAC4 data under the premise of meeting the preemption conditions, and starts to send eMAC5 data. The release-x signal needs to be executed in the reverse execution order of hold-x, that is, the last hold has priority release. Before the release signal of the last executed hold signal is executed, the system should not respond to the lower-level release signal. For example, if the hold signal processing order is hold-1, hold-2, hold-3, then the release signal processing order should be release-3, release-2, release-1. Release-2 and release-1 signals will not be responded to before the release-3 signal is processed. It can be understood that the eMAC4 data can be a fast message transmitted through the eMAC4 fast service interface. The eMAC5 data can be a fast message transmitted through the eMAC5 fast service interface. It should be noted that PLS is a physical signaling sublayer used to transmit data receiving and sending signals step by step. Compared with the existing Qbu technology, the main difference between the PLS at each level in this embodiment is that the hardware needs to implement the PLS signal of multiple eMACs.

In the above implementation, a first fast service interface, a second fast service interface, and a preemptible service interface are provided between the MAC merging sublayer and the MAC client. The MAC merging service interface is provided on the MAC merging sublayer 1208 for the MAC client 1210. Multiple fast service interfaces and interception control signals can be designed to achieve multi-level nested interception, so that data transmission can be carried out strictly in accordance with the requirements of multi-level different delays and jitter levels. Under the premise of meeting the deterministic real-time communication of the TT flow, the communication performance of the RC flow can be improved at the same time.

In some implementations, the first fast service interface and the second fast service interface are respectively provided with different cache modules. The preemptible service interface is also provided with a cache module. The fast message includes at least one of a time-triggered service flow and a rate-limited service flow. The preemptible message is a best-effort service flow.

In some embodiments, the number of fast service interfaces ranges from 2 to 8, and the number of preemptible service interfaces is 1. Referring to FIG. 13 , the first eMAC layer corresponding to the first fast service interface and the second eMAC layer corresponding to the second fast service interface are transmission channels for transmitting fast messages. The pMAC layer corresponding to the preemptible service interface is a transmission channel for transmitting preemptible messages. The MAC layer includes a MAC merging sublayer, a first eMAC layer, a second eMAC layer, and a pMAC layer.

In some embodiments, please refer to FIG. 14 , the MAC merging sublayer includes a first fast message filtering module, a second fast message filtering module, a receiving processing module, a verification module, a transmission processing module, a first service interface corresponding to the first fast message filtering module, a second service interface corresponding to the second fast message filtering module, and a third service interface corresponding to the receiving processing module. Among them, the first fast message filtering module is used to filter the fast messages that need to enter the first fast service interface. The second fast message filtering module is used to filter the fast messages that need to enter the second fast service interface. The receiving processing module is used to receive the preemptible message and process the preemptible message.

Specifically, when the coordination sublayer receives a data message, the data message is sent to the first fast message filtering module, the second fast message filtering module, and the receiving processing module. For preemptible messages, the receiving processing module is used to process the preemptible messages. For fast messages at all levels, they are filtered into different processing units for processing and sent to the MAC client through the corresponding fast service interface. The data receiving process is illustrated as follows: data frame reception; data frame verification; discarding frames with verification errors; caching frames with correct verification; frames marked with different preambles are diverted to different frame processing units, and different frame processing units correspond to e0-7MAC and pMAC respectively; the frame processing unit determines the frame integrity, frames the incomplete frames and verifies them, and discards frames with verification errors. Send complete and correctly verified frames to the corresponding MAC service interface.

In the above implementation, the incomplete data frames intercepted at each level can be reassembled and verified for correctness at the data receiving end, and the data frames that pass the verification are sent to the corresponding e0-7MAC or pMAC service interface.

In an embodiment of the present application, the first fast message filtering module, the second fast message filtering module, the receiving processing module, the verification module, the transmission processing module, the cache module and the processing unit can be one or more processors, controllers or chips with a communication interface capable of implementing a communication protocol, and can also include a memory and related interfaces, a system transmission bus, etc. if necessary; the processor, controller or chip executes program-related codes to implement corresponding functions. Alternatively, an alternative solution is that the first fast message filtering module, the second fast message filtering module, the receiving processing module, the verification module, the transmission processing module, the cache module and the processing unit share an integrated chip or a processor, controller, memory and other devices. The shared processor, controller or chip executes program-related codes to implement corresponding functions.

An embodiment of the present specification provides a data sending method, which is applied to a MAC client, and the method includes: when a first fast message is received and a second fast message is being sent, a first intercept control signal is sent to a MAC merging sublayer based on the first tuple information of the first fast message; wherein the first fast message and the second fast message belong to fast packets respectively; the first intercept control signal is accompanied by an intercept indication and a first interface identifier corresponding to the first tuple information; the second fast message is being sent through a fast service interface indicated by the second interface identifier; the first intercept control signal is used to instruct the MAC merging sublayer to control the second fast message to suspend sending through the fast service interface indicated by the second interface identifier according to the intercept indication and the first interface identifier, and to control the first fast message to start sending through the fast service interface indicated by the first interface identifier.

The embodiment of the present specification provides a data transmission method, which is applied to the MAC merging sublayer, and the method comprises: receiving a first fast message and When sending a second fast message, a first intercept control signal is received; wherein, the first intercept control signal is determined based on the first tuple information of the first fast message; the first fast message and the second fast message belong to fast groups respectively; the first intercept control signal is accompanied by an intercept indication and a first interface identifier corresponding to the first tuple information; wherein, the first interface identifier is used to refer to a fast service interface for sending the first fast message; wherein, the second fast message is being sent through the fast service interface referred to by the second interface identifier; according to the intercept indication and the first interface identifier, the second fast message is controlled to be suspended from being sent through the fast service interface referred to by the second interface identifier, and the first fast message is controlled to start being sent through the fast service interface referred to by the first interface identifier.

Please refer to FIG. 15 . An embodiment of the present specification provides a data sending device, which includes: a control signal sending module and a message sending control module.

A control signal sending module, used for sending a first intercept control signal based on the first tuple information of a first fast message when a first fast message is received and a second fast message is being sent; wherein the first fast message and the second fast message belong to fast groups respectively; the first intercept control signal is accompanied by an intercept indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to a fast service interface that sends the first fast message; and the second fast message is being sent through the fast service interface indicated by the second interface identifier.

A message sending control module is used to control the second fast message to suspend sending through the fast service interface indicated by the second interface identifier according to the interception indication and the first interface identifier, and control the first fast message to start sending through the fast service interface indicated by the first interface identifier.

In an embodiment of the present application, the control signal sending module and the message sending control module can be one or more processors, controllers or chips with a communication interface capable of implementing a communication protocol, and can also include a memory and related interfaces, a system transmission bus, etc. if necessary; the processor, controller or chip executes program-related codes to implement corresponding functions. Alternatively, an alternative solution is that the control signal sending module and the message sending control module share an integrated chip or a processor, controller, memory or other device. The shared processor, controller or chip executes program-related codes to implement corresponding functions.

Please refer to FIG. 16 . An embodiment of the present specification provides a data receiving device, which includes: a priority determination module, a message diversion module, and a message sending module.

A priority determination module, used for determining the priority of the message to be processed when the received message to be processed belongs to a fast group; wherein different priorities correspond to different first processing units; different first processing units correspond to different fast service interfaces; the number of the fast service interfaces is greater than or equal to 2;

A message diversion module, used for diverting the message to be processed to a target processing unit corresponding to the priority of the message to be processed; wherein the target processing unit is used for determining the integrity of the message to be processed;

The message sending module is used to send the complete fast message output by the target processing unit to the target fast service interface corresponding to the target processing unit.

In an embodiment of the present application, the priority determination module, the message diversion module, the message uploading module and the processing unit can be one or more processors, controllers or chips with a communication interface capable of implementing a communication protocol, and can also include a memory and related interfaces, a system transmission bus, etc. if necessary; the processor, controller or chip executes program-related codes to implement corresponding functions. Alternatively, an alternative solution is that the priority determination module, the message diversion module, the message uploading module and the processing unit share an integrated chip or a processor, controller, memory and other devices. The shared processor, controller or chip executes program-related codes to implement corresponding functions.

Please refer to Figure 17. An embodiment of the present specification provides a data sending device, which is applied to a MAC client. The device includes: a preemption signal sending module, which is used to send a first preemption control signal to the MAC merging sublayer based on the first tuple information of the first fast message when a first fast message is received and a second fast message is being sent.

Among them, the first fast message and the second fast message belong to fast groups respectively; the first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information; the second fast message is being sent through the fast service interface indicated by the second interface identifier.

The first preemption control signal is used to instruct the MAC merging sublayer to control the second fast message to suspend sending through the fast service interface indicated by the second interface identifier, and to control the first fast message to start sending through the fast service interface indicated by the first interface identifier according to the preemption indication and the first interface identifier.

In an embodiment of the present application, the interception signal sending module may be one or more processors, controllers or chips having a communication interface capable of implementing a communication protocol, and may also include a memory and related interfaces, a system transmission bus, etc. if necessary; the processor, controller or chip executes program-related codes to implement corresponding functions.

Please refer to FIG. 18 . An embodiment of the present specification provides a data sending device, which is applied to a MAC merging sublayer. The device includes: a preemption signal receiving module and a message sending control module.

A steal signal receiving module, used to receive a first steal control signal when a first fast message is received and a second fast message is being sent; wherein the first steal control signal is determined based on the first tuple information of the first fast message; the first fast message and the second fast message belong to fast groups respectively; the first steal control signal is accompanied by a steal indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to a fast service interface that sends the first fast message; wherein the second fast message is being sent through the fast service interface referred to by the second interface identifier.

In an embodiment of the present application, the interception signal receiving module and the message sending control module can be one or more processors, controllers or chips with a communication interface capable of implementing a communication protocol, and can also include a memory and related interfaces, a system transmission bus, etc. if necessary; the processor, controller or chip executes program-related codes to implement corresponding functions. Alternatively, an alternative solution is that the interception signal receiving module and the message sending control module share an integrated chip or a processor, controller, memory and other devices. The shared processor, controller or chip executes program-related codes to implement corresponding functions.

An embodiment of the present specification provides an electronic device, including a transceiver, a processor and a memory, wherein the memory is used to store a computer program, and the processor calls the computer program to implement the method mentioned in any of the above embodiments.

An embodiment of the present specification provides a chip, which includes at least one processor, an interface circuit and a memory, wherein the memory, the interface circuit and the at least one processor are interconnected via lines, a computer program is stored in the memory, and when the computer program is executed by the at least one processor, the chip implements the method mentioned in any of the above embodiments.

An embodiment of the present specification provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method mentioned in any of the above embodiments is implemented.

It should be noted that the logic and/or steps represented in the flowchart or described in other ways herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or equipment (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or equipment and execute instructions), or used in conjunction with these instruction execution systems, devices or equipment. For the purpose of this specification, "computer-readable medium" can be any medium that can contain, store, communicate, propagate or transmit A device for transmitting a program for use with or in conjunction with an instruction execution system, device or apparatus. More specific examples of computer readable media (a non-exhaustive list) include the following: an electrical connection with one or more wirings (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and editable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in other suitable ways as necessary, and then stored in a computer memory.

It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

A data sending method, characterized in that the method comprises:

In the case where a first fast message is received and a second fast message is being sent, a first interception control signal is sent based on the first tuple information of the first fast message; wherein the first fast message and the second fast message belong to a fast group respectively; the first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to a fast service interface for sending the first fast message; the second fast message is being sent through the fast service interface indicated by the second interface identifier;

According to the intercept indication and the first interface identifier, the second fast message is controlled to suspend sending through the fast service interface indicated by the second interface identifier, and the first fast message is controlled to start sending through the fast service interface indicated by the first interface identifier.
The method according to claim 1 is characterized in that the priority of the first fast message is higher than the priority of the second fast message.
The method according to claim 1, characterized in that the method further comprises:

When the first fast message is sent, sending a first release control signal; wherein the first release control signal is accompanied by a release indication and the first interface identifier;

According to the release indication and the first interface identifier, the second fast message is controlled to continue to be sent through the fast service interface indicated by the second interface identifier.
The method according to claim 1 or 3, characterized in that the method further comprises:

While the second fast message is continuing to be sent through the fast service interface indicated by the second interface identifier, in the event that a preemptible message to be sent is received, the second fast message is controlled to continue to be sent based on the second tuple information of the preemptible message; wherein the preemptible message belongs to a preemptible group.
The method according to claim 4, characterized in that the method further comprises:

When the second fast message is sent, send a second release control signal; wherein the second release control signal is accompanied by a release indication and the second interface identifier; wherein the second interface identifier is used to refer to a fast service interface for sending the second fast message;

According to the release indication and the second interface identifier, the preemptible message is controlled to start sending.
The method according to claim 1 or 3, characterized in that the method further comprises:

When the second fast message is being sent and a third fast message to be sent is received, the second fast message is controlled to continue being sent based on the third tuple information of the third fast message; wherein the third fast message belongs to the fast group and the priority of the second fast message is higher than the priority of the third fast message.
The method according to claim 6, characterized in that the method further comprises:

When the second fast message is sent, send a second release control signal; wherein the second release control signal is accompanied by a release indication and the second interface identifier; wherein the second interface identifier is used to refer to a fast service interface for sending the second fast message;

According to the release indication and the second interface identifier, the third fast message is controlled to start being sent through the fast service interface indicated by the third interface identifier.
The method according to claim 1, characterized in that the method further comprises:

In the process of sending the first fast message, when a fourth fast message to be sent is received, a second interception control signal is sent based on the fourth tuple information of the fourth fast message; wherein the fourth fast message belongs to the fast group, and the priority of the fourth fast message is higher than the priority of the first fast message; the second interception control signal is accompanied by the interception indication and a fourth interface identifier corresponding to the fourth tuple information; wherein , the fourth interface identifier is used to refer to the fast service interface for sending the fourth fast message;

According to the intercept indication and the fourth interface identifier, the first fast message is controlled to be suspended from sending, and the fourth fast message is controlled to start sending through the fast service interface indicated by the fourth interface identifier.
The method according to any one of claims 1 to 3, characterized in that the first fast message is obtained by encapsulating the data flow in the queue; before receiving the first fast message, the method further comprises:

Acquire a data stream; wherein the data stream corresponds to the first tuple information;

The data stream is added to the queue corresponding to the first tuple information; wherein the queues have different priorities; and the priorities corresponding to the queues correspond to the interface identifiers of the fast service interfaces.
The method according to claim 9, characterized in that the step of adding the data stream to the queue corresponding to the first tuple information comprises:

Performing pattern matching on the data stream according to the first tuple information to determine a data identifier of the data stream;

The data flow is added to a queue corresponding to the data identifier of the data flow.
The method according to claim 9, characterized in that the method further comprises:

Encapsulating the data stream based on the priority corresponding to the queue to obtain the first fast message; wherein the designated component of the first fast message is accompanied by the priority of the first fast message;

According to the priority attached to the designated component of the first fast message, the first fast message is added to a target cache module; wherein the target cache module is set for the fast service interface indicated by the first interface identifier.
The method according to claim 11, characterized in that the encapsulating the data stream based on the priority corresponding to the queue to obtain the first fast message comprises:

Based on the priority corresponding to the queue, the data stream is encapsulated with a corresponding frame preamble to obtain the first fast message.
The method according to any one of claims 1 to 3, characterized in that the suspending sending of the second fast message comprises:

When it is determined that the sending of the second fast message meets the interception condition, the sending of the second fast message is suspended.
The method according to any one of claims 1 to 3, characterized in that the method further comprises:

Record the breakpoint at which the second fast message is intercepted; wherein the breakpoint is used to mark the part of the second fast message that has been completed.
The method according to claim 1 is characterized in that different cache modules are respectively provided for the fast service interface for sending the first fast message and the fast service interface for sending the second fast message;

The fast grouped messages include time-triggered service flows and/or rate-limited service flows.
The method according to claim 15, characterized in that a cache module is provided for the preemptible service interface that sends the preemptible message;

The preemptible messages include best effort service flows.
The method according to claim 16 is characterized in that the number of the fast service interfaces ranges from 2 to 8, and the number of the preemptible service interfaces is 1.
A data receiving method, characterized in that the method comprises:

In the case where the received message to be processed belongs to a fast group, determining the priority of the message to be processed; wherein different priorities correspond to different first processing units; different first processing units correspond to different fast service interfaces; wherein the number of the fast service interfaces is greater than or equal to 2;

Diverting the message to be processed to a target processing unit corresponding to the priority of the message to be processed; wherein the target processing unit is used to determine the integrity of the message to be processed;

The complete fast message output by the target processing unit is sent to the target fast service interface corresponding to the target processing unit.
The method according to claim 18 is characterized in that, before determining the priority of the message to be processed when the received message to be processed belongs to a fast packet, the method further comprises:

After receiving the message to be processed, verifying the message to be processed;

In the case where the message to be processed passes the verification, determining that the message to be processed belongs to a fast group based on the value of the first specified component in the message to be processed;

Correspondingly, determining the priority of the message to be processed includes:

The priority of the message to be processed is determined based on the value of the first specified component in the message to be processed.
The method according to claim 19, characterized in that the method further comprises:

If the message to be processed fails to pass the verification, the message to be processed is discarded.
The method according to claim 19, characterized in that after receiving the message to be processed, verifying the message to be processed comprises:

The message to be processed is verified based on the value of the second specified component in the message to be processed.
The method according to claim 21 is characterized in that the first designated component is a preamble code; the second designated component is a frame delimiter.
The method according to claim 18, characterized in that the method further comprises:

In the case where the received to-be-processed message belongs to a preemptible group, determining that the to-be-processed message is a preemptible message; wherein the preemptible message is provided with a priority, and the priority of the preemptible message corresponds to a second processing unit; and the second processing unit corresponds to a preemptible service interface;

Diverting the preemptible message to the second processing unit; wherein the second processing unit is used to determine the integrity of the preemptible message;

The complete preemptible message output by the second processing unit is sent to the preemptible service interface corresponding to the second processing unit.
The method according to claim 23, characterized in that the different fast service interfaces are respectively provided with different cache modules; the preemptible service interface is also provided with a cache module;

The fast grouped messages include time-triggered flows and/or rate-limited flows;

The preemptible packet message includes a best effort service flow.
The method according to claim 24 is characterized in that the number of the fast service interfaces ranges from 2 to 8, and the number of preemptible service interfaces is 1.
The method according to claim 18, characterized in that the manner of determining the integrity of the message to be processed comprises at least one of the following:

In the case where it is determined that the message to be processed is a complete data frame, determining that the message to be processed is complete;

In the case where it is determined that the message to be processed is an incomplete data frame, the message to be processed is framed based on a frame delimiter and a fragment count to obtain a complete data frame.
A data sending method, characterized in that it is applied to a MAC client, the method comprising:

When a first fast message is received and a second fast message is being sent, a first interception control signal is sent to the MAC merging sublayer based on the first tuple information of the first fast message;

The first fast message and the second fast message belong to fast packets respectively; the first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information; the second fast message is being sent through a fast service interface indicated by the second interface identifier;

The first interception control signal is used to instruct the MAC merging sublayer to control the second fast The sending of the fast message through the fast service interface indicated by the second interface identifier is suspended, and the sending of the first fast message through the fast service interface indicated by the first interface identifier is controlled to start.
A data transmission method, characterized in that it is applied to a MAC merging sublayer, the method comprising:

In the case where a first fast message is received and a second fast message is being sent, a first interception control signal is received; wherein the first interception control signal is determined based on the first tuple information of the first fast message; the first fast message and the second fast message belong to a fast group respectively; the first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to a fast service interface for sending the first fast message; wherein the second fast message is being sent through the fast service interface indicated by the second interface identifier;

According to the intercept indication and the first interface identifier, the second fast message is controlled to suspend sending through the fast service interface indicated by the second interface identifier, and the first fast message is controlled to start sending through the fast service interface indicated by the first interface identifier.
A chip, characterized in that the chip has a first fast service interface, a second fast service interface, and a preemptible service interface; wherein,

The first fast service interface and the second fast service interface are located between the MAC merging sublayer and the MAC client, so as to transmit fast messages between the MAC merging sublayer and the MAC client;

The preemptible service interface is located between the MAC merging sublayer and the MAC client, so as to transmit the preemptible message between the MAC merging sublayer and the MAC client;

The MAC merging sublayer provides a MAC merging service interface to the MAC client; wherein the MAC merging service interface is used to receive a preemption control signal sent by the MAC client, and the preemption control signal is accompanied by a preemption indication and an interface identifier; wherein the interface identifier and the preemption indication are used to determine a target service interface that can transmit messages among the first fast service interface, the second fast service interface, and the preemptible service interface.
The chip according to claim 29, characterized in that the first fast service interface and the second fast service interface are respectively provided with different cache modules; the preemptible service interface is also provided with a cache module;

The fast message includes at least one of a time-triggered service flow and a rate-limited service flow;

The preemptible message is a best-effort service flow.
The chip according to claim 30, characterized in that the number of fast service interfaces ranges from 2 to 8, and the number of preemptible service interfaces is 1;

The first eMAC layer corresponding to the first fast service interface and the second eMAC layer corresponding to the second fast service interface are transmission channels for transmitting fast messages;

The pMAC layer corresponding to the preemptible service interface is a transmission channel for transmitting preemptible messages;

The MAC layer includes the MAC merging sublayer, the first eMAC layer, the second eMAC layer, and the pMAC layer.
The chip according to claim 29 is characterized in that the MAC merging sublayer includes a first fast message filtering module, a second fast message filtering module, a receiving processing module, a verification module, a transmission processing module, a first service interface corresponding to the first fast message filtering module, a second service interface corresponding to the second fast message filtering module, and a third service interface corresponding to the receiving processing module; wherein,

The first fast message filtering module is used to filter the fast messages that need to enter the first fast service interface;

The second fast message filtering module is used to filter the fast messages that need to enter the second fast service interface;

The receiving and processing module is used to receive the preemptible message and process the preemptible message.
A data sending device, characterized in that the device comprises:

A control signal sending module, configured to send a first interception control signal based on the first tuple information of the first fast message when a first fast message is received and a second fast message is being sent; wherein the first fast message and the second fast message belong to a fast group respectively; the first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to a fast service interface for sending the first fast message; and the second fast message is being sent through the fast service interface indicated by the second interface identifier;

A message sending control module is used to control the second fast message to suspend sending through the fast service interface indicated by the second interface identifier according to the interception indication and the first interface identifier, and control the first fast message to start sending through the fast service interface indicated by the first interface identifier.
A data receiving device, characterized in that the device comprises:

A priority determination module, used for determining the priority of the message to be processed when the received message to be processed belongs to a fast group; wherein different priorities correspond to different first processing units; different first processing units correspond to different fast service interfaces; the number of the fast service interfaces is greater than or equal to 2;

A message diversion module, used for diverting the message to be processed to a target processing unit corresponding to the priority of the message to be processed; wherein the target processing unit is used for determining the integrity of the message to be processed;

The message sending module is used to send the complete fast message output by the target processing unit to the target fast service interface corresponding to the target processing unit.
A data sending device, characterized in that it is applied to a MAC client, and the device comprises:

A preemption signal sending module, configured to send a first preemption control signal to the MAC merging sublayer based on the first tuple information of the first fast message when the first fast message is received and the second fast message is being sent;

The first fast message and the second fast message belong to fast packets respectively; the first interception control signal is accompanied by an interception indication and a first interface identifier corresponding to the first tuple information; the second fast message is being sent through a fast service interface indicated by the second interface identifier;

The first preemption control signal is used to instruct the MAC merging sublayer to control the second fast message to suspend sending through the fast service interface indicated by the second interface identifier, and to control the first fast message to start sending through the fast service interface indicated by the first interface identifier according to the preemption indication and the first interface identifier.
A data sending device, characterized in that it is applied to a MAC merging sublayer, and the device comprises:

A steal signal receiving module, used for receiving a first steal control signal when a first fast message is received and a second fast message is being sent; wherein the first steal control signal is determined based on the first tuple information of the first fast message; the first fast message and the second fast message belong to a fast group respectively; the first steal control signal is accompanied by a steal indication and a first interface identifier corresponding to the first tuple information; wherein the first interface identifier is used to refer to a fast service interface for sending the first fast message; wherein the second fast message is being sent through the fast service interface indicated by the second interface identifier;

A message sending control module is used to control the second fast message to suspend sending through the fast service interface indicated by the second interface identifier according to the interception indication and the first interface identifier, and control the first fast message to start sending through the fast service interface indicated by the first interface identifier.
An electronic device, characterized in that it includes a transceiver, a processor and a memory, wherein the memory is used to store a computer program, and the processor calls the computer program to execute the method according to any one of claims 1 to 28.
A chip, characterized in that the chip includes at least one processor, an interface circuit and a memory, the memory, the interface circuit and the at least one processor are interconnected by lines, a computer program is stored in the memory, and when the computer program is executed by the at least one processor, the chip implements the method described in any one of claims 1 to 28.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the method described in any one of claims 1 to 28.