CN116017701A - Data processing method, network device and computer readable storage medium - Google Patents

Abstract

The invention discloses a data processing method, network equipment and a computer readable storage medium. The data processing method comprises the steps of receiving time triggering data flow information; triggering a data stream at a first time slot transmission time; receiving event triggering data stream information; transmitting an event trigger data stream in a second time slot; wherein the first time slot and the second time slot are different time slots in the same transmission period. According to the scheme provided by the embodiment of the invention, the situation that the time-sensitive event trigger data stream and the time trigger data stream collide in transmission can be reduced, and the common transmission of the event trigger data stream and the time trigger data stream is realized.

Description

Data processing method, network device and computer readable storage medium

Technical Field

The present invention relates to the field of data processing technologies, and in particular, to a data processing method, a network device, and a computer readable storage medium.

Background

In the context of rapid industrial development, more and more industrial application scenarios place new demands on the delay of network-carried information. First, deterministic transmission delay requirements are set forth, for example, in advanced driving assistance systems the end-to-end transmission delay of data should be less than 250 microseconds, and not more than 10 microseconds in power and chassis control. In the transmission of electric brake control information in an electric power system, the requirement of information transmission delay is required, and the requirement of the variation range of the delay is also provided. In order to meet the sensitivity requirement of some application scenarios to service bearing delay, an open, general standard protocol, namely TSN technology (Time-Sensitive Networks, time-sensitive network), is formulated by the IEEE TSN working group.

However, in the current TSN technology, event triggered data flow occurs in the real-time application network system due to the existence of event messages, such as operator commands, alarms, and state changes. Because event-triggered data streams are dynamic and unpredictable, when event-triggered data streams also require low latency, event-triggered data streams may be given the same priority as time-triggered data streams, in which case event-triggered data streams will occupy the reserved transmission time slots for time-triggered data streams, thereby increasing or even making unscheduled the time-triggered data stream transmission latency.

Disclosure of Invention

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a data processing method, network equipment and a computer readable storage medium, which can reduce the occurrence of conflict between time-sensitive event trigger data streams and time trigger data streams in transmission and realize the common transmission of the event trigger data streams and the time trigger data streams.

In a first aspect, an embodiment of the present invention provides a data processing method, including:

Receiving a time-triggered data stream;

transmitting the time-triggered data stream in a first time slot;

receiving an event-triggered data stream;

transmitting the event-triggered data stream in a second time slot; wherein the first time slot and the second time slot are different time slots in the same transmission period.

In a second aspect, embodiments of the present invention also provide a network device, including at least one control processor and a memory for communicatively coupling with the at least one control processor; the memory stores instructions executable by the at least one control processor to enable the at least one control processor to perform the data processing method as described above in the first aspect.

In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium, where computer-executable instructions are stored, where the computer-executable instructions are configured to cause a computer to perform the data processing method according to the first aspect.

The embodiment of the invention comprises the following steps: receiving a time trigger data stream, and transmitting the time trigger data stream in a first time slot; receiving an event trigger data stream, and transmitting the event trigger data stream in a second time slot; wherein the first time slot and the second time slot are different time slots in the same transmission period. According to the scheme of the embodiment of the invention, the time trigger data stream is received, the time trigger data stream is transmitted in the first time slot, the event trigger data stream is received, and the event trigger data stream is transmitted in the second time slot, wherein the first time slot and the second time slot are different time slots in the same transmission period, so that the time trigger data stream and the event trigger data stream cannot be transmitted in the same time slot in the same transmission period, that is, the situation that the time-sensitive event trigger data stream and the time trigger data stream collide in transmission can be reduced, and the common transmission of the event trigger data stream and the time trigger data stream is realized.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.

FIG. 1 is a flow chart of a data processing method provided by one embodiment of the present invention;

FIG. 2 is a flowchart of a specific method of step S120 in FIG. 1;

FIG. 3 is a flowchart of a specific method of step S140 in FIG. 1;

FIG. 4 is a flow chart of a data processing method provided by one embodiment of the present invention;

FIG. 5 is a flowchart of a specific method of step S170 in FIG. 4;

FIG. 6 is a flowchart of a specific method of step S170 in FIG. 4;

FIG. 7 is a flowchart of a specific method of step S1722 in FIG. 6;

FIG. 8 is a flow chart of a data processing method provided by one embodiment of the present invention;

FIG. 9 is a flowchart of a specific method of step S810 in FIG. 8;

FIG. 10 is a flowchart of a specific method of step S810 in FIG. 8;

FIG. 11 is a diagram illustrating data stream transmission in the related art;

fig. 12 is a schematic diagram of data stream transmission in a time shaping mechanism of TSN technology;

FIG. 13 is a transmission schematic diagram of a transmission queue according to another embodiment of the present invention;

FIG. 14 is a transmission schematic diagram of a transmission queue provided by another embodiment of the present invention;

FIG. 15 is a schematic diagram of a transmission cycle of an event triggered data stream according to another embodiment of the present invention;

fig. 16 is a schematic diagram of data stream transmission according to another embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It should be noted that although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different from that in the flowchart. The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The embodiment of the invention provides a data processing method, network equipment and a computer scale storage medium, which are used for receiving a time trigger data stream, transmitting the time trigger data stream in a first time slot, receiving an event trigger data stream and transmitting the event trigger data stream in a second time slot, wherein the first time slot and the second time slot are different time slots in the same transmission period, so that the time trigger data stream and the event trigger data stream cannot be transmitted in the same time slot in the same transmission period, that is, the situation that the time-sensitive event trigger data stream and the time trigger data stream collide in transmission can be reduced, and the common transmission of the event trigger data stream and the time trigger data stream is realized.

Embodiments of the present invention will be further described below with reference to the accompanying drawings.

As shown in fig. 1, fig. 1 is a flowchart of a data processing method according to an embodiment of the present invention, and the data processing method may include, but is not limited to, step S110, step S120, step S130, and step S140.

Step S110: the reception time triggers the data stream.

In this step, the time-triggered data stream refers to a time-sensitive data stream, and the time-triggered data stream may be a periodically transmitted data stream, where the time-triggered data stream has a transmission period.

In an alternative embodiment, in a network application scenario where TSN technology is applied, when a certain service needs to complete transmission within a certain time, the service has a maximum delay requirement. For example, avionics full duplex switched ethernet must complete end-to-end transmission of critical data in a matter of milliseconds and also have stringent requirements for its delay jitter, and the transmission delays for many industrial control applications are guaranteed to be within a bounded range of 1 millisecond and even a matter of microseconds, and furthermore the end-to-end transmission delays for data in advanced driving assistance systems should be less than 250 microseconds, not exceeding 10 microseconds in power and chassis control, etc. The traffic generated data stream belongs to a time triggered data stream.

It should be noted that, the receiving time-triggered data stream may be received by using an array to store the time-triggered data stream, or may be directly stored in any form of linked list in the related art, which is not specifically limited in this embodiment, and then waits for the subsequent transmission of the time-triggered data stream.

Step S120: the data stream is triggered at a first slot transmission time.

In this step, since the time-triggered data stream is received in step S110, the data stream can be triggered at the first slot transmission time. The first time slot may be any time slot in the transmission period, and the first time slot may be a single time slot in the transmission period, or may be any number of time slots, where there are a plurality of first time slots, and an interval between the first time slots may be any interval, so long as a time delay requirement of the time triggered data stream can be met, and this embodiment is not limited specifically. In addition, the number of the first time slots may be preset according to the number of the time-triggered data streams.

It should be noted that, in the first time slot, the data stream is triggered, referring to fig. 11, the time triggered data stream may be transmitted from the client through the ethernet device, and finally reach the target client; the time triggered data stream may be stored in a transmission queue, which may be a first-in first-out transmission queue disposed at any position in the system in the related art, and then transmitted by any data stream transmission method in the related art, for example: the time-triggered data stream is transmitted by periodically opening a gate to open a transmission queue in a first time slot, or the transmission queue is directly opened in the first time slot to periodically transmit the time-triggered data stream, etc.

Step S130: an event trigger data stream is received.

In this step, the event-triggered data stream may be a data stream occurring due to the existence of an event message, for example, due to an operator command, an accident alarm, or a state change, etc., in the real-time application network system, and the event-triggered data stream may be a sporadic data stream or a suddenly occurring periodic data stream, where the event-triggered data stream has dynamics and unpredictability.

It should be noted that, the event trigger data stream may be received, where an array is used to store the event trigger data stream, or the event trigger data stream may be directly stored in any form of linked list in the related art, so long as the function of receiving the event trigger data stream can be played, and the embodiment is not specifically limited, and waits for the subsequent transmission of the event trigger data stream.

Step S140: the event trigger data stream is transmitted in a second time slot, wherein the first time slot and the second time slot are different time slots in the same transmission period.

In this step, since the event trigger data stream is received in step S130, the event trigger data stream may be transmitted in the second time slot, which may be any time slot in the transmission period, and the second time slot may be a single time slot or any number of time slots in the transmission period, and when there are a plurality of second time slots, the interval between the second time slots may be any interval, and the number of second time slots may be preset according to the number of time trigger data streams.

It should be noted that, in the event trigger data stream is transmitted in the second time slot, referring to fig. 11, the event trigger data stream may be transmitted from the first client through the first ethernet device 1110, the second ethernet device 1120, the third ethernet device 1130, and the fourth ethernet device 1140, respectively, and finally reach the second client; it is also possible to store the event-triggered data stream in a queue and then transmit the event-triggered data stream by any data stream transmission method in the related art, for example: the event triggered data stream is periodically transmitted by periodically opening a gate in the second time slot to transmit the event triggered data stream, or opening a queue in the second time slot, etc. Because the first time slot and the second time slot are different time slots in the same transmission period, the time trigger data stream and the event trigger data stream are transmitted in different time slots, the influence on each other can not exist, the situation that the time-sensitive event trigger data stream and the time trigger data stream collide in transmission can be reduced, and the common transmission of the event trigger data stream and the time trigger data stream is realized.

In an alternative embodiment, in TSN technology, the same time slice allows gating of only one queue to open, and when two or more gating switches of different priorities are simultaneously open, only the data stream of the high priority queue can be output, and the data stream of the low priority queue cannot be output. When there are both periodic time-triggered data streams and event-triggered data streams such as operation commands, system alarms, etc. in the system, if the event-triggered data streams are also time-sensitive, the transmission priority of the event-triggered data stream queue is higher than or equal to the transmission priority of the time-triggered data stream queue, which may result in the time-triggered data streams not being schedulable or being unable to complete transmission within the maximum allowable extension time range, and the transmission priority of the event-triggered data stream queue is too low, which may result in the event-triggered data streams not being schedulable or being unable to complete transmission within the maximum allowable extension time range.

It should be noted that, the time triggered data stream is received, the time triggered data stream refers to a time sensitive time triggered data stream, and the time triggered data stream is transmitted in a first time slot, where the first time slot refers to any time slot in a transmission period, and the first time slot may be one time slot or multiple time slots. An event triggered data stream is received, which refers to a system burst data stream, such as an operation command, a system alarm, etc., which is dynamic and unpredictable. The data stream is triggered by the transmission event in the second time slot, wherein the second time slot refers to any time slot in the transmission period, and the second time slot can be one time slot or a plurality of time slots. The first time slot and the second time slot are different time slots in the same transmission period, the time trigger data stream and the event trigger data stream cannot be transmitted in the same time slot in the same transmission period, so that the conflict of the time trigger data stream and the event trigger data stream in transmission can be avoided, and the common transmission of the event trigger data stream and the time trigger data stream is realized.

In this embodiment, by adopting the data processing method including steps S110 to S140, the time triggered data stream is received, and the time triggered data stream is transmitted in the first time slot; receiving an event trigger data stream, and transmitting the event trigger data stream in a second time slot; the first time slot and the second time slot are different time slots in the same transmission period, so that the time trigger data stream and the event trigger data stream cannot be transmitted in the same time slot in the same transmission period.

It should be noted that, under the time-aware shaping mechanism of the TSN technology, the time-aware shaping mechanism requires strict time synchronization, and the data streams sent by the system terminal device are all periodic, and the dependence on the synchronism and periodicity does not allow unpredictable data streams to exist in the network system, and if burst streams other than the flow scheduling occur in the system operation process, such as an operation command, a system alarm and other event trigger data streams, these burst streams must influence the scheduling of the original streams and even cause the breakdown of the system.

In one embodiment, as shown in fig. 2, step S120 is further described, and step S120 may include, but is not limited to, step S121 and step S122.

Step S121: the time triggered data stream is buffered in a first transmit queue.

In this step, the number of the first transmission queues may be one or more, and the first transmission queues may be first-in first-out transmission queues in the related art. After receiving the time trigger data stream, the time trigger data stream is buffered in a first transmission queue, and the transmission is carried out after the queue is opened.

It should be noted that, the setting of the first transmission queue may be any setting manner in the related art, for example, in an alternative embodiment, the first transmission queue is set by means of an array and an array subscript, or the first transmission queue is set by means of a linked list, for example, a single-chain list or a double-chain list, so long as the data flow can be triggered by the buffering time, which is not limited in this embodiment.

Step S122: and starting a first transmission queue in a first time slot according to preset queue switch information, so that the time triggering data stream is transmitted in the first time slot.

In this step, since the time-triggered data stream is already buffered in the first transmission queue in step S121, it is possible to control the first transmission queue to be started to transmit the time-triggered data stream.

It should be noted that, the first transmission queue is started in the first time slot according to the preset queue switch information, and the preset queue switch information may be that after the time trigger data stream is acquired, scheduling calculation is performed according to the number of the time trigger data streams, the time delay requirement, the transmission path set, and the like, so as to obtain the queue switch information of the first transmission queue, referring to fig. 16, the transmission path may be a path actually passed by the time trigger data stream, for example, a path actually passed by the time trigger data stream in fig. 16, and the transmission path is respectively passed through the device 1 to the device 5 in fig. 16, and is a transmission path of the time trigger data stream of the device 1, the device 2, the device 6, and the device 5.

It should be noted that, the first transmission queue is started according to the queue switch information, and the first transmission queue of the buffer time trigger data stream is started in the first time slot.

In addition, in an alternative embodiment, the queue switch information may be cached in a cache list, and the first transmission queue may be provided with a gate, and the gate of the first transmission queue may be opened according to the queue switch information, so that the time triggered data stream is transmitted in the first slot.

In this embodiment, by adopting the steps S121 to S122, after the time trigger data stream is acquired, the time trigger data stream is buffered in the first transmission queue, and the first transmission queue is opened in the first time slot according to the preset queue switch information, so that the time trigger data stream is transmitted in the first time slot, and the purpose of transmitting the time trigger data stream in the first time slot can be achieved.

In one embodiment, as shown in fig. 3, step S140 is further described, and step S140 may include, but is not limited to, step S141 and step S142.

Step S141: the event-triggered data stream is buffered in a second transmit queue.

In this step, the number of the second transmission queues may be one or more, and the second transmission queues may be transmission queues set in any form in the related art. After receiving the event trigger data stream, buffering the event trigger data stream in a second transmission queue, and transmitting after waiting for the opening of the queue.

It should be noted that, the setting of the second transmission queue may be any setting manner in the related art, for example, in an alternative embodiment, the second transmission queue is set by an array manner, or the second transmission queue is set by a linked list manner, for example, a single-chain table or a double-linked list manner, where the second transmission queue only needs to play a role of buffering event-triggered data streams, and this embodiment is not limited specifically.

Step S142: and opening a second transmission queue in a second time slot according to the queue switch information, so that the event triggers the data stream to transmit in the second time slot.

In this step, since the event trigger data stream is already buffered in the second transmission queue in step S141, it is possible to control the second transmission queue to be opened to transmit the event trigger data stream.

It should be noted that, the second transmission queue is opened in the second time slot according to the queue switch information, where the queue switch information may be that after the event trigger data stream is acquired, scheduling calculation is performed according to the number of the event trigger data streams and the time delay requirement, so as to obtain the queue switch information of the second transmission queue.

It should be noted that, the second transmission queue is started according to the queue switch information, and the second transmission queue is started in the second time slot, and meanwhile, the queue switch information is also used for controlling to start the first transmission queue in the first time slot, and the queue switch information may be list information formed according to the information of starting and closing the transmission queue, and start the first transmission queue in the first time slot and start the second transmission queue in the second time slot.

In addition, in an alternative embodiment, the queue switch information may be buffered in a buffer queue, and the second transmission queue may be provided with a gate, and the second transmission queue may be opened to enable the event-triggered data stream to be transmitted in the second time slot when the gate of the second transmission queue is opened according to the queue switch information.

In this embodiment, by adopting the steps S141 to S142, after the event trigger data stream is acquired, the event trigger data stream is buffered in the second transmission queue, and then the second transmission queue is opened in the second time slot according to the queue switch information, so that the event trigger data stream is transmitted in the second time slot, thereby achieving the purpose of transmitting the event trigger data stream in the second time slot.

It should be noted that the first transmission queue and the second transmission queue are two different types of transmission queues, and the first transmission queue and the second transmission queue may be any number of transmission queues, which is not specifically limited in this embodiment, because the first transmission queue is used for buffering the time trigger data stream, the second transmission queue is used for buffering the event trigger data stream, according to the queue switch information, the first transmission queue is opened in the first time slot, the second transmission queue is opened in the second time slot, and the first time slot and the second time slot are different time slots in the same transmission period, that is, the embodiment achieves the purpose that the time trigger data stream and the event trigger data stream are transmitted together, and the time trigger data stream and the event trigger data stream cannot collide during transmission.

In an embodiment, as shown in fig. 4, the data processing method may further include, but is not limited to, step S150, step S160, and step S170.

Step S150: a normal data stream is received.

In this step, the normal data stream may be a normal data stream generated by a service with no strict requirement on time delay, in an alternative embodiment, referring to fig. 12, in a time shaping mechanism of TSN technology, there are 8 transmission queues with different transmission priorities in front of one output port of the device, according to the requirement on the transmission time delay, the client service is divided into 8 classes at most, and is respectively classified into types 0 to 7, different types of service generate different types of data streams, the data streams generated by different classes of client service enter into queues with corresponding transmission priorities, T1 to T4 refer to gating corresponding to the transmission queues of types 1 to 4, the gating is controlled according to a transmission period Tcycle through gating list information, when the gating is opened, the data stream in the transmission queue may be gated through a transmission selection algorithm, and then the data stream to be finally transmitted is determined through a scheduling algorithm. In an alternative embodiment, the time triggered data stream and the event triggered data stream belong to time sensitive data streams, and have strict time delay requirements, the first transmission queue for buffering the time triggered data stream and the second transmission queue for buffering the event triggered data stream may be the transmission queue with the highest priority, and the normal data stream may be the transmission queue with any other transmission priority except the highest transmission priority, which is not limited in this embodiment.

Step S160: and buffering the common data stream in a third transmission queue, wherein the transmission priority of the third transmission queue is lower than that of the first transmission queue.

In this step, the third transmission queue is a different type of transmission queue from the first transmission queue and the second transmission queue, and the time-triggered data stream, the event-triggered data stream, and the normal data stream are stored separately in the different transmission queues. In an alternative embodiment, when the third transmission queue and the first transmission queue are opened at the same time, the system always preferentially transmits the first transmission queue because the transmission priority of the third transmission queue is lower than that of the first transmission queue, which can prevent the transmission of the normal data stream from adversely affecting the transmission of the time triggered data stream.

It should be noted that, the first transmission queue, the second transmission queue and the third transmission queue are all provided with transmission priorities, and the transmission priorities are mainly used for limiting the simultaneous opening of two different transmission queues, so as to avoid blocking the transmission queues with high transmission priorities by the transmission queues with low transmission priorities when the two transmission queues with different transmission priorities are simultaneously opened.

Step S170: and determining whether to transmit the common data stream according to the queue switch information.

In this step, since the normal data stream is obtained in step S150, the normal data stream is buffered in the third transmission queue in step S160, and thus, whether to transmit the normal data stream is determined based on the queue switch information.

It should be noted that, the queue switch information includes switch information of the first transmission queue and switch information of the second transmission queue, and determines whether to transmit the normal data stream according to the queue switch information, in an optional implementation manner, whether to start a third transmission queue for buffering the normal data stream according to the queue switch information is determined, and whether to start other high priority transmission queues in the same timeslot is required to be determined.

In this embodiment, by adopting the data processing method including steps S140 to S170, the normal data stream is received, then the normal data stream is buffered in the third transmission queue, the transmission priority of the third transmission queue is lower than the transmission priority of the first transmission queue of the trigger data stream in the buffering time, and then whether to transmit the normal data stream is determined according to the queue switch information. Therefore, the embodiment can realize the common transmission of the time trigger data stream, the event trigger data stream and the common data stream under the condition of realizing the common transmission of the time trigger data stream and the event trigger data stream.

In one embodiment, as shown in fig. 5, further describing step S170, step S170 may include, but is not limited to, step S1711, step S1712, step S1713, and step S1714.

Step S1711: and when the first transmission queue and the third transmission queue are simultaneously started according to the queue switch information, determining that the common data stream is not transmitted.

In this step, when the first transmission queue and the third transmission queue are simultaneously started according to the queue switch information, the transmission priority of the third transmission queue is lower than that of the first transmission queue, so that it is determined that the normal data stream is not transmitted, and when the third transmission queue has time to trigger the data stream, the transmission time triggers the data stream.

It should be noted that, since the third transmission queue is opened in the first time slot, the second transmission queue is opened in the second time slot, and the first time slot and the second time slot are different time slots in the same transmission period, when the first transmission queue and the third transmission queue are simultaneously opened, the second transmission queue is not opened.

Step S1712: when the first transmission queue is started but the third transmission queue is not started according to the queue switch information, the normal data stream is determined not to be transmitted.

In this step, when the first transmission queue is started but the third transmission queue is not started according to the queue switch information, since the third transmission queue is not started, it is determined that the normal data stream is not transmitted, and when the third transmission queue has time to trigger the data stream, the transmission time triggers the data stream.

It should be noted that, the first transmission queue of the buffer time triggering data stream is opened, and the second transmission queue of the buffer event triggering data stream is closed, because the third transmission queue is opened in the first time slot, and the second transmission queue is opened in the second time slot, the first time slot and the second time slot are different time slots of the same transmission period.

Step S1713: when the first transmission queue and the second transmission queue are not started according to the queue switch information, but the third transmission queue is started, the common data stream is determined to be transmitted, and the common data stream is transmitted.

In this step, when the first transmission queue and the second transmission queue are not started according to the queue switch information, but the third transmission queue is started, only the third transmission queue is started in the current time slot, and the transmission priority does not need to be determined, the transmission of the normal data stream is determined, and the transmission processing is performed on the normal data stream.

It should be noted that in an alternative embodiment, the first transmission queue is opened in the first time slot, the second transmission queue is opened in the second time slot, the current time slot is neither the first time slot nor the second time slot, the first transmission queue and the second transmission queue are not opened, but the third transmission queue is opened, that is, the normal data stream may also be a periodic transmission stream, and the time slots which are neither the first time slot nor the second time slot in the transmission period are transmitted, so that the time triggered data stream, the event triggered data stream, and the normal data stream reduce collisions during transmission, and realize common transmission.

Step S1714: and when the second transmission queue and the third transmission queue are simultaneously started according to the queue switch information, and the event trigger data stream is cached in the second transmission queue, determining that the common data stream is not transmitted.

In this step, when the second transmission queue and the third transmission queue are simultaneously opened according to the queue switch information, and the second transmission queue caches the event trigger data stream, because the event trigger data stream of the second transmission queue is a time sensitive data stream, the transmission priority of the second transmission queue cached with the event trigger data stream is higher than that of the third transmission queue cached with the normal data stream, and therefore it is determined that the normal data stream is not transmitted.

It should be noted that in an alternative embodiment, the second transmission queue caches the event-triggered data stream, which may be when the second transmission queue is opened, because the second transmission queue is in a first-in first-out structure, or a processor may be disposed at the second transmission queue, and the data detection is performed on the first linked list position or the array position of the queue outlet of the second transmission queue, so as to determine whether the second transmission queue caches the event-triggered data stream.

In this embodiment, by adopting the steps S1711 to S1714, determining whether to transmit the normal data stream according to the queue switch information, that is, opening or closing the third transmission queue according to the queue switch information, determining not to transmit the normal data stream when the third transmission queue in which the normal data stream is buffered is closed, and determining to transmit the normal data stream when only the third transmission queue is opened; when the third transmission queue is opened, if the first transmission queue is opened, determining that the common data stream is not transmitted; if the second transmission queue is opened and the event triggering data stream exists in the second transmission queue, the normal data stream is determined not to be transmitted, and therefore the purpose of determining whether to transmit the normal data stream according to the queue switch information can be achieved.

In one embodiment, step S172 is further described as shown in fig. 6, and step S172 may include, but is not limited to, step S1721 and step S1722.

Step S1721: and when the second transmission queue and the third transmission queue are simultaneously started according to the queue switch information and the second transmission queue does not have a buffering event to trigger the data stream, determining to transmit the common data stream.

In this step, when the second transmission queue and the third transmission queue are simultaneously opened according to the queue switch information, and the second transmission queue does not buffer the event trigger data stream, it is indicated that the second time slot currently opening the second transmission queue does not have the event trigger data stream to be transmitted, and it is determined to transmit the normal data stream. Because the event trigger data stream is generally a burst data stream, the event trigger data stream is transmitted in the second time slot, and when the event trigger data stream needing to be transmitted does not exist, the common data stream is transmitted in the second time slot, and the transmission mode achieves the purpose of improving the bandwidth utilization rate of the link.

It should be noted that, the data stream is triggered by the transmission event in the second slot, so when the second transmission queue is opened, the current slot is the second slot.

Step S1722: and carrying out transmission processing on the common data stream.

In this step, since it is determined in step S1721 that the normal data stream is transmitted and the second transmission queue is simultaneously opened with the third transmission queue, transmission processing for the normal data stream is required. Since the transmission priority of the second transmission queue is higher than that of the third transmission queue for buffering the normal data stream, the second transmission queue needs to be processed correspondingly, for example: the transmission priority of the second transmission queue is lowered, or the second transmission queue is closed, etc., so that the normal data stream in the third transmission queue can be transmitted.

In an alternative embodiment, referring to fig. 13, fig. 13 is a transmission schematic of a transmission queue. When the second transmission queue and the third transmission queue are simultaneously opened, if the state information is that the second transmission queue has no event triggering data stream, the gate is closed according to the state information, and the second transmission queue is not opened, so that the common data stream in the third transmission queue can be transmitted.

In this embodiment, by adopting the steps S1721 to S1722, the second transmission queue and the third transmission queue are simultaneously opened according to the queue switch information, if there is no event trigger data stream to be transmitted in the second transmission queue, the normal data stream in the third transmission queue is determined to be transmitted, and the normal data stream is transmitted, so that the purpose of improving the broadband utilization rate of the link in the second time slot can be achieved.

In one embodiment, step S1722 is further described as shown in fig. 7, and step S1722 may include, but is not limited to, step S17221 and step S17222.

Step S17221: and reducing the transmission priority of the second transmission queue so that the transmission priority of the second transmission queue is smaller than the transmission priority of the third transmission queue.

In this step, the transmission priority of the second transmission queue is lowered, and for example, the Credit value of the second transmission queue may be set to zero, the Credit value is increased by multiplying the data waiting time in the transmission queue by the idle slope parameter, and the transmission time is multiplied by the transmission slope reduction Credit value based on burst limit shaping (Burst Limiting Shaper, BLS) and based on Credit shaping (CBS) proposed in ieee802.1 q. The credit value is used to control the transmission priority, and in an alternative embodiment a large value may be chosen as the slope parameter to allow a rapid decrease in the transmission priority of the second transmission queue. When the second transmission queue has no event trigger data stream, the credit value is reduced, the transmission priority is reduced, and the data in the third transmission queue which is in the gating open state can be transmitted at the same time, that is, when the common data stream is determined to be transmitted, the second transmission queue has no event trigger data stream, so that the transmission priority of the second transmission queue is smaller than that of the third transmission queue.

It should be noted that, the transmission priority of the second transmission queue may be reduced, or the transmission priority of the second transmission queue may be directly reduced to the minimum so that the transmission priority of the second transmission queue is smaller than the transmission priority of the third transmission queue.

In an alternative embodiment, referring to fig. 14, fig. 14 is a transmission schematic of a transmission queue. And setting a dynamic priority before the gating of the second transmission queue, and when the second transmission queue and the third transmission queue are simultaneously opened and no event triggering data flow exists in the second transmission queue, reducing the priority of the second transmission queue. And if the transmission priority of the second transmission queue is reduced to be lower than that of the third transmission queue, transmitting the common data stream.

Step S17222: and transmitting the common data stream through the second time slot.

In this step, the transmission priority of the second transmission queue is reduced to be less than that of the third transmission queue in step S17221, and the second transmission queue for buffering the event-triggered data stream is only opened in the second time slot, and the first transmission queue is not opened in the second time slot, so that the third transmission queue can transmit in the second time slot, and the common data stream is transmitted in the second time slot, thereby achieving the purpose of improving the bandwidth utilization rate of the link.

In this embodiment, by adopting the steps S17221 to S17222, when the normal data stream is transmitted, the transmission priority of the second transmission queue is reduced so that the transmission priority of the second transmission queue is lower than that of the third transmission queue, and then the normal data stream is transmitted through the second time slot, so as to achieve the purpose of transmitting the normal data stream.

It should be noted that, in the TSN technology, the time triggered data stream is a periodic stream, and when the time slot for transmitting the normal data stream is the first time slot, all the open transmission queues in the current time slot are detected, and the data stream with high transmission priority is transmitted according to the transmission priority. In this embodiment, in the same transmission period, the first time slot transmits the time-triggered data stream, the second time slot transmits the event-triggered data stream, the first time slot and the second time slot are not the same time slot, when the time slot for transmitting the common data stream is the second time slot, not only all the open transmission queues of the current time slot are detected, but also whether the event-triggered data stream exists in the second transmission queue is detected, if so, the data stream with high transmission priority is transmitted according to the transmission priority, if not, the priority of the second transmission queue is reduced, or the second transmission queue is closed, so that the third transmission queue for buffering the common data stream can transmit, thereby improving the utilization rate of the second time slot, and achieving the purpose of improving the bandwidth utilization rate of the link.

In an embodiment, as shown in fig. 8, the data processing method may further include, but is not limited to, step S810 and step S820 before the event trigger data stream is transmitted in the second slot.

Step S810: the transmission period of the event-triggered data stream is set.

In this step, a transmission period of the event trigger data stream is set, the event trigger data stream may be a periodic stream that suddenly appears, the transmission period of the event trigger data stream may be consistent with the transmission period of the time trigger data stream, and setting the size of the transmission period of the event trigger data stream needs to ensure that the periodically reserved resource can ensure that the event trigger data stream completes transmission within a tolerable maximum delay.

The reservation of the periodic resource may be a reservation of a time slot in a transmission period, or may be a terminal through which the event trigger data stream is transmitted, which is determined according to a transmission path of the event trigger data stream, for example, in fig. 16, from the first device to the fifth device, and through the second device and the sixth device, respectively, where the first device, the second device, the sixth device, and the fifth device form the transmission path of the event trigger data stream. And reserving ports of the event trigger data stream for the terminal in a time slot for transmitting the event trigger data stream, so that the ports are prevented from being occupied by other data streams to block the transmission of the event trigger data stream.

Step S820: a second time slot is determined in the transmission period, wherein the distribution of the second time slot in each transmission period is the same.

In this step, since the transmission period of the event trigger data stream is set in step S810, the second time slot is determined in the transmission period, when the event trigger data stream occurs in any time slot, it is ensured that the event trigger data stream occurring in any time slot can be transmitted in the second time slot, and the time interval between any time slot and the second time slot cannot be greater than the tolerable maximum delay of the event trigger data stream. The second time slot is distributed in the same transmission period, so that an event trigger data stream is transmitted at any moment, and the transmission time requirement can be met. In an alternative embodiment, referring to fig. 15, in the TSN technology, a transmission period T of an event-triggered data stream is set, and 10 transmission slots are divided in one transmission period T, where each slot corresponds to a duration of gating on a transmission queue, and data streams in the corresponding transmission queue are allowed to be transmitted. The event trigger data stream is arranged to be output on the time slot 2 and the time slot 5, and the gating of the second transmission queue for buffering the event trigger data stream is opened on the time segments of the time slot 2 and the time slot 5, so that the event trigger data stream is allowed to be transmitted. The distribution of the second time slots in each transmission period is the same, that is, the time slots 2 and 5 are reserved and allocated to the event trigger data streams in all transmission periods, so that the distribution of the second time slots of all event trigger data streams in all transmission periods is ensured to be the same, and the event trigger data streams can meet the time delay requirement of transmission when reaching the second time slots no matter the event trigger data streams are received in any time slots.

It should be noted that the second transmission queue of the buffer event trigger data stream is only opened in the second time slot.

In this embodiment, by adopting the steps S810 to S820, the transmission period of the event-triggered data stream is set first, and then the second time slot is determined in the transmission period, where the distribution of the second time slot in each transmission period is the same, so as to achieve the purpose that the time-sensitive event-triggered data stream can complete transmission within the tolerable maximum time delay.

In one embodiment, as shown in fig. 9, step S810 is further described, and step S810 may include, but is not limited to, step S8111 and step S8112.

Step S8111: and obtaining the tolerable delay values of all kinds of event-triggered data streams.

In this step, tolerable delay values of all kinds of event-triggered data streams are obtained, where the event-triggered data streams include burst sporadic streams or periodic streams, for example: system alarms, message alerts, etc., the tolerable delay values for different kinds of event-triggered data streams may be different. The tolerable delay value may be the maximum tolerable delay value, or may be any delay value within a tolerable delay range, which is not limited in this embodiment.

Step S8112: and setting the transmission period of the event trigger data stream according to the largest value in all the tolerable delay values.

In this step, since the tolerable delay values of all kinds of event-triggered data streams have been acquired in step S8111, the transmission period of the event-triggered data stream may be set according to the one with the largest value among all the tolerable delay values. The setting of the transmission period of the event-triggered data stream needs to ensure that the periodically reserved resources can ensure that the event-triggered data stream completes transmission within a tolerable maximum delay.

It should be noted that since the event triggered data stream may also be a time sensitive data stream, the event triggered data stream also needs to complete transmission within a tolerable maximum delay. The size of the transmission period of the event trigger data stream may be set according to the tolerable maximum delay of all kinds of event trigger data streams, for example, assuming that the tolerable maximum delay of the event trigger data stream with the highest degree of urgency is Dmax, the transmission period T of the event trigger data stream is required to be smaller than the tolerable maximum delay Dmax, and the transmission period T may be set to a half value of the maximum delay, i.e., t=1/2 Dmax. Wherein, the smaller the transmission period, the higher the tolerance of the network to the event-triggered data stream.

In this embodiment, by adopting the steps S810 to S820, the tolerable delay values of all kinds of event-triggered data streams are obtained first, and then the transmission period of the event-triggered data stream is set according to the one with the largest value in all the tolerable delay values, so as to achieve the purpose of setting the transmission period of the event-triggered data stream.

In one embodiment, as shown in fig. 10, step S810 is further described, and step S810 may include, but is not limited to, step S8121 and step S8122.

Step S8121: a ratio of the number of time-triggered data streams to the number of event-triggered data streams is determined.

In this step, the size of the transmission period may be modified according to the proportion of the number of data streams that may exist in the network. Firstly, receiving time trigger data stream and event trigger data stream, then determining the quantity proportion of the time trigger data stream and the event trigger data stream, for example, respectively counting the quantity while receiving the time trigger data stream and the event trigger data stream, then obtaining the quantity proportion according to the quantity, or traversing the cached or stored data stream to obtain the quantity of the time trigger data stream and the event trigger data stream, then determining the quantity proportion of the time trigger data stream and the event trigger data stream,

In addition, in an alternative embodiment, the number proportion of the time triggered data stream and the event triggered data stream is determined, or the number proportion of the time triggered data stream and the event triggered data stream is set by the user according to a preset number proportion of the data stream, where the preset number proportion of the data stream refers to the number proportion of the time triggered data stream and the event triggered data stream determined by the user according to an application scenario.

Step S8122: and setting the transmission period of the event trigger data stream according to the quantity proportion.

In this step, since the number ratio of the time-triggered data streams and the event-triggered data streams is determined in step S8121, the transmission period of the event-triggered data streams can be set according to the number ratio. The time-triggered data stream and the event-triggered data stream are both time-sensitive, so that the time-triggered data stream and the event-triggered data stream are ensured to be transmitted together, and the transmission of the data stream cannot exceed the corresponding tolerable maximum time delay, and in an optional implementation mode, the time-triggered data stream and the event-triggered data stream are buffered in different transmission queues, are transmitted according to the first-in-first-out rule queuing, the transmission period of the event-triggered data stream is set according to the quantity proportion, the reserved second time slot cannot be excessive to occupy the first time slot of the time-triggered data stream, and the time-triggered data stream is prevented from being too much to exceed the time delay requirement.

It should be noted that, the transmission period is set according to the number proportion of the data stream, and then the number of the reserved time slots is correspondingly set according to the transmission period, so that the purposes of improving the broadband utilization rate of the link and avoiding the transmission of the data stream exceeding the time delay requirement can be achieved.

In this embodiment, by adopting the steps S8121 to S8122, the number ratio of the time-triggered data stream and the event-triggered data stream is determined first, and then the transmission period of the event-triggered data stream is set according to the number ratio, the smaller the transmission period of the event-triggered data stream is, the higher the tolerance of the network to the event-triggered data stream can be, the transmission period can be reasonably set according to the number ratio of the time-triggered data stream and the event-triggered data stream, so that the common transmission of the time-triggered data stream and the event-triggered data stream is realized, and the purpose of reasonably setting the transmission period of the event-triggered data stream is also achieved.

In addition, an embodiment of the present invention also provides a network device, including: at least one processor and a memory for communication connection with the at least one processor; the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor.

The processor and the memory may be connected by a bus or other means.

The memory, as a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory remotely located relative to the processor, the remote memory being connectable to the processor through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The non-transitory software programs and instructions required to implement the data processing method of the above-described embodiments are stored in the memory and when executed by the processor, perform the data processing method of the above-described embodiments, for example, perform the method steps S110 to S140 in fig. 1, the method steps S121 to S122 in fig. 2, the method steps S141 to S142 in fig. 3, the method steps S150 to S170 in fig. 4, the method steps S1711 to S1714 in fig. 5, the method steps S1721 to S1722 in fig. 6, the method steps S17221 to S17222 in fig. 7, the method steps S810 to S820 in fig. 8, the method steps S8111 to S8112 in fig. 9, and the method steps S8121 to S8122 in fig. 10, which are described above.

Furthermore, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions that are executed by a processor or controller, for example, by a processor of a network device in the above embodiment, which may cause the processor to perform the data processing method in the above embodiment, for example, perform the method steps S110 to S140 in fig. 1, the method steps S121 to S122 in fig. 2, the method steps S141 to S142 in fig. 3, the method steps S150 to S170 in fig. 4, the method steps S1711 to S1714 in fig. 5, the method steps S1721 to S1722 in fig. 6, the method steps S17221 to S17222 in fig. 7, the method steps S810 to S820 in fig. 8, the method steps S8111 to S8112 in fig. 9, and the method steps S8121 to S8122 in fig. 10 described above.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.

While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.

Claims (12)

1. A data processing method, comprising:

receiving a time-triggered data stream;

transmitting the time-triggered data stream in a first time slot;

receiving an event-triggered data stream;

the event triggered data stream is transmitted in a second time slot, wherein the first time slot and the second time slot are different time slots in the same transmission period.

2. The data processing method according to claim 1, wherein the transmitting the time-triggered data stream in the first slot comprises:

caching the time-triggered data stream in a first transmission queue;

and starting the first transmission queue in a first time slot according to preset queue switch information, so that the time triggering data stream is transmitted in the first time slot.

3. The data processing method according to claim 2, wherein said transmitting said event-triggered data stream in the second time slot comprises:

Buffering the event-triggered data stream in a second transmission queue;

and opening the second transmission queue in a second time slot according to the queue switch information, so that the event-triggered data stream is transmitted in the second time slot, wherein the second transmission queue has the same transmission priority as the first transmission queue, and the second transmission queue is not opened at the same time as the first transmission queue.

4. A data processing method according to claim 3, characterized in that the data processing method further comprises:

receiving a normal data stream;

the common data stream is cached in a third transmission queue, and the transmission priority of the third transmission queue is lower than that of the first transmission queue;

and determining whether to transmit the common data stream according to the queue switch information.

5. The data processing method of claim 4, wherein said determining whether to transmit the normal data stream based on the queue switch information comprises:

when the first transmission queue and the third transmission queue are simultaneously started according to the queue switching information, determining that the common data stream is not transmitted;

or,

When the first transmission queue is started but the third transmission queue is not started according to the queue switch information, determining that the common data stream is not transmitted;

or,

when the first transmission queue and the second transmission queue are not started according to the queue switch information, but the third transmission queue is started, determining to transmit the common data stream, and performing transmission processing on the common data stream;

or,

and when the second transmission queue and the third transmission queue are simultaneously started according to the queue switch information, and the event trigger data stream is cached in the second transmission queue, determining that the common data stream is not transmitted.

6. The data processing method of claim 4, wherein said determining whether to transmit the normal data stream based on the queue switch information comprises:

and when the second transmission queue and the third transmission queue are simultaneously started according to the queue switch information and the event trigger data stream is not cached by the second transmission queue, determining to transmit the common data stream and performing transmission processing on the common data stream.

7. The data processing method according to claim 6, wherein said performing transmission processing on said normal data stream includes:

Reducing the transmission priority of the second transmission queue so that the transmission priority of the second transmission queue is smaller than the transmission priority of the third transmission queue;

and transmitting the common data stream through the second time slot.

8. The data processing method of claim 1, wherein the data processing method further comprises, prior to the transmission of the event triggered data stream in the second time slot:

setting a transmission period of the event-triggered data stream;

and determining the second time slot in the transmission period, wherein the distribution of the second time slot in each transmission period is the same.

9. The data processing method according to claim 8, wherein the setting the transmission period of the event-triggered data stream includes:

obtaining the tolerable delay values of all kinds of event trigger data streams;

and setting the transmission period of the event-triggered data stream according to the one with the largest value in all the tolerable delay values.

10. The data processing method according to claim 8, wherein the setting the transmission period of the event-triggered data stream includes:

determining a quantity ratio of the time triggered data stream and the event triggered data stream;

And setting the transmission period of the event-triggered data stream according to the quantity proportion.

11. A network device comprising at least one processor and a memory for communication connection with the at least one processor; the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the data processing method of any one of claims 1 to 10.

12. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the data processing method according to any one of claims 1 to 10.

Images