WO2023207585A1

WO2023207585A1 - Message transmission method and device

Info

Publication number: WO2023207585A1
Application number: PCT/CN2023/087741
Authority: WO
Inventors: 曾正洋; 司源; 胡磊
Original assignee: 华为技术有限公司
Priority date: 2022-04-29
Filing date: 2023-04-12
Publication date: 2023-11-02
Also published as: CN117014944A

Abstract

The embodiments of the present application disclose a message transmission method and device. The method comprises: a communication network receiving end or an application receiving end determining a periodic timer on the basis of a received sending period requirement in respect of a first message, and determining a delay timer on the basis of a sending delay requirement; if the first message is received outside of the periodic timer, then determining that the effect of network fluctuation on first message is too large and that said message requires immediate forwarding; if the first message is received within the periodic timer but outside of the delay timer, then determining that the effect of network fluctuation on said message is too small but that the normal forwarding time has still been exceeded and that said message requires immediate forwarding. Only when received within the delay timer is said message buffered to the end of the delay timer for forwarding. This reduces both message transmission jittering and message transmission latency.

Description

A message transmission method and device

This application claims priority to the Chinese patent application submitted to the State Intellectual Property Office of China on April 29, 2022, with the application number 202210468586.9 and the invention title "A message transmission method and device", the entire content of which is incorporated by reference. in this application.

Technical field

Embodiments of the present application relate to the field of communications, and in particular, to a message transmission method and device.

Background technique

Delay-sensitive messages generally have periodic characteristics, and the transmission network needs to take into account both the certainty of message transmission (low jitter) and low-latency performance. For example, the typical characteristics of industrial control messages: periodic intensive small packet interactions, interaction cycles Short, high requirements for delay and jitter reliability.

The current message transmission technology sends messages periodically. When the message is received in other periods due to network fluctuations, it still needs to wait for the periodic transmission of the message, and the message transmission delay is high.

Contents of the invention

Embodiments of the present application provide a message transmission method and device, which are used to reduce the jitter of message transmission and reduce the delay of message transmission.

The first aspect of the embodiment of the present application provides a message transmission method, which includes: obtaining the sending cycle requirement and the sending delay requirement of the first message in the communication service, where the first message is a delay-sensitive message; according to the sending cycle requirement Determine the period timer and determine the delay timer according to the transmission delay requirement; when the first message is received outside the period timer, forward the first message to the next node; when the first message is received within the period timer arrives, but when it is received outside the delay timer, the first message is forwarded to the next node, and the delay timer is smaller than the period timer.

In the above aspect, the communication network receiving end or the application receiving end determines the periodic timer according to the sending cycle requirement of the received first message, and determines the delay timer according to the sending delay requirement. If the first message is received outside the periodic timer , it is determined that it is too affected by network fluctuations and needs to be forwarded to the next node immediately. If the first message is received within the period timer but outside the delay timer, it is determined that it is less affected by network fluctuations. , but it still exceeds the normal forwarding time and needs to be forwarded to the next node immediately. Only when it is received within the delay timer, it will be buffered until the delay timer ends and forwarded, which not only reduces the jitter of message transmission, but also reduces the delay of message transmission. time delay.

In a possible implementation, the method further includes: counting a first number of messages received within the delay timer and a second number of messages received within the periodic timer; The length of the delay timer is adjusted according to the relationship between a preset quantity range, and the length of the periodic timer is adjusted according to the relationship between the second quantity and the second preset quantity range.

In the above possible implementation, the length of the periodic timer and the delay timer determined based on the transmission cycle requirement and the transmission delay requirement may decrease in accuracy due to network fluctuations or other effects. Therefore, the application receiving end can count the preset time range. The first number of packets received within the delay timer and the second number of packets received within the periodic timer. The application receiving end can adjust the length of the delay timer according to the relationship between the first quantity and the first preset quantity range, and adjust the length of the period timer according to the relationship between the second quantity and the second preset quantity range, by in the application Set up an adaptive de-jitter buffer at the receiving end to prevent large-delay packets from entering the buffer on the premise of reducing packet delay jitter, balance delay jitter and delay performance, and adaptively adjust the timer length and transmission cycle , improve the experience of periodic delay-sensitive packets and reduce the resource consumption of the communication network.

In a possible implementation, after the above steps adjust the length of the delay timer according to the relationship between the first quantity and the first preset quantity range, the method further includes: adjusting the delay timer according to the relationship between the first quantity and the preset delay range. The message sending cycle.

In the above possible implementation, the length of the delay timer needs to occupy a certain length in the sending cycle of the message, that is, there is a preset delay range relative to the sending cycle. When the length of the delay timer is less than the preset delay range When the delay timer length is greater than the preset delay range, the sending period can be increased to improve the experience of periodic delay-sensitive messages.

In a possible implementation, the difference between the first quantity and the first preset quantity range has a positive feedback relationship with the length of the delay timer; the difference between the second quantity and the second preset quantity range has a positive feedback relationship with the periodic timing The length of the device forms a positive feedback relationship.

In a possible implementation, the method further includes: receiving indication information from the network device, the indication information indicating transmission quality; and adjusting the lengths of the delay timer and the periodic timer according to the indication information.

In the above possible implementation manner, the application receiving end provides instruction information to the communication network receiving end, and cooperates with the communication network receiving end to adjust the de-jitter buffer. The communication network receiving end provides instruction information to the application receiving end, and cooperates with the application receiving end to perform de-jittering. Adjustment of the jitter buffer. This indication information can indicate the quality of packet transmission. By collaboratively adjusting the de-jitter buffer at the application receiving end & communication network receiving end, the buffer timer setting is more in line with the application experience and network status, and can achieve better results. application experience and network resource saving.

In a possible implementation, the method further includes: receiving buffer information from the network device, where the buffer information includes the length of the delay timer; and adjusting the length of the local delay timer according to the buffer information.

In the above possible implementation, the communicating parties exchange information, coordinate the buffer information, and adjust the length of the local delay timer based on the buffer information, thereby improving the certainty and real-time performance of delay-sensitive message delivery.

In a possible implementation, after the above steps adjust the length of the local delay timer according to the buffer information, the method further includes: adjusting the message according to the relationship between the adjusted length of the delay timer and the preset delay range. sending cycle.

In the above possible implementation, the communicating parties can also adjust the message sending cycle according to the relationship between the adjusted delay timer length and the preset delay range, so as to improve the experience of periodic delay-sensitive messages.

In a possible implementation, the method further includes: sending buffer information to the central control node, the buffer information including the length of the delay timer; adjusting the length of the delay timer according to instructions from the central control node, the instructions being the center The control node determines the adjustment specifications of the delay timer based on the buffer information.

In the above possible implementation, both communicating parties send buffer information to the central control node. The buffer information includes the length of the delay timer, the adjustment specifications of the delay timer determined by the central control node based on the buffer information, and the delay timer adjustment specifications based on the delay timer. The relationship between the length of the timer and the preset delay range determines the adjustment specifications of the sending cycle, and then generates instructions based on the adjustment specifications, so that both communicating parties can adjust their respective delay timer lengths and message sending cycles, through the buffers of both communicating parties. Collaboration improves the certainty and real-time performance of delay-sensitive message delivery.

In a possible implementation, the instruction also includes the adjustment specification of the sending cycle determined by the central control node based on the relationship between the adjusted delay timer length and the preset delay range. According to the instruction from the central control node After adjusting the length of the delay timer, the method further includes: adjusting the sending cycle of the message according to the adjustment specification of the sending cycle.

In the above possible implementation, the central control node can also adjust the message sending cycle according to the relationship between the adjusted delay timer length and the preset delay range, so as to improve the experience of periodic delay-sensitive messages.

In a possible implementation, the above steps of adjusting the message sending cycle according to the relationship between the length of the adjusted delay timer and the preset delay range include: when the length of the adjusted delay timer is less than the preset delay range When the length of the adjusted delay timer is greater than the preset delay range, the sending cycle is increased.

In a possible implementation, the method further includes: obtaining the arrival status of the packets in the delay timer and the periodic timer; and adjusting the service quality of the packet transmission according to the arrival status.

In the above possible implementation manner, the adaptive buffer effectively counts the arrival of packets at a packet-by-packet level, and further feeds back to the communication network, so that QoS adjustments for network transmission packets can be made in a timely manner.

The second aspect of this application provides a message transmission method, including: obtaining the transmission delay of the service message; when the transmission delay exceeds the delay threshold value, forwarding the service message through the first queue; when transmitting When the delay does not exceed the delay threshold, the service packets are periodically forwarded through the second queue.

In the above aspects, adding a high-priority preemption queue through the communication network receiving end is superior to TSN queue sending, increasing the packet delay calculation method, setting the threshold value of the packet transmission delay, and judging the waiting delay of the packet. , submit when the threshold value is exceeded, avoiding buffering and waiting, and improving message timeliness.

In a possible implementation manner, the delay threshold value is determined based on the sending cycle of the service message.

The third aspect of the embodiments of the present application provides a data transmission device that can implement the method in the above first aspect or any possible implementation of the first aspect. The device includes corresponding units or modules for performing the above method. The units or modules included in the device can be implemented by software and/or hardware. The device may be, for example, a network device, a chip, a chip system, a processor, etc. that supports the network device to implement the above method, or a logic module or software that can realize all or part of the network device functions.

The fourth aspect of the embodiments of the present application provides a data transmission device that can implement the method in the above second aspect or any possible implementation manner of the second aspect. The device includes corresponding units or modules for performing the above method. The units or modules included in the device can be implemented by software and/or hardware. The device may be, for example, a network device, a chip, a chip system, a processor, etc. that supports the network device to implement the above method, or a logic module or software that can realize all or part of the network device functions.

The fifth aspect of the embodiment of the present application provides a computer device, including: a processor, the processor is coupled to a memory, and the memory is used to store instructions. When the instructions are executed by the processor, the computer device implements the first aspect. Or the method in any possible implementation of the first aspect. The computer device may be, for example, a network device, or may be a chip or chip system that supports the network device to implement the above method.

The sixth aspect of the embodiment of the present application provides a computer device, including: a processor, the processor is coupled to a memory, and the memory is used to store instructions. When the instructions are executed by the processor, the computer device implements the above second aspect. Or the method in any possible implementation of the second aspect. The computer device may be, for example, a network device, or A chip or chip system that implements the above method can be used to support network equipment.

The seventh aspect of the embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When the instructions are executed by a processor, the first aspect or any possibility of the first aspect is realized. The method provided by the implementation, the second aspect or any possible implementation of the second aspect.

The eighth aspect of the embodiments of the present application provides a computer program product. The computer program product includes computer program code. When the computer program code is executed on a computer, the first aspect or any possible implementation of the first aspect is realized. The method provided by any one of the possible implementation modes of the second aspect or the second aspect.

Description of the drawings

Figure 1 is a schematic structural diagram of a network framework provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of another network framework provided by an embodiment of the present application;

Figure 3 is a schematic flow chart of a message transmission method provided by an embodiment of the present application;

Figure 4 is a schematic diagram of message transmission steps provided by an embodiment of the present application;

Figure 5 is a schematic diagram of the effect of an adaptive de-jitter buffer provided by an embodiment of the present application;

Figure 6 is a schematic flow chart of another message transmission method provided by an embodiment of the present application;

Figure 7 is a schematic diagram of another message transmission step provided by an embodiment of the present application;

Figure 8 is a schematic diagram of another adaptive de-jittering buffer effect provided by an embodiment of the present application;

Figure 9 is a schematic flowchart of a collaborative adjustment of timer length provided by an embodiment of the present application;

Figure 10 is a schematic diagram of a buffer adjustment process provided by an embodiment of the present application;

Figure 11 is a schematic flow chart of QoS adjustment provided by an embodiment of the present application;

Figure 12 is a schematic flow chart of another message transmission method provided by an embodiment of the present application;

Figure 13 is a schematic structural diagram of a message transmission device provided by an embodiment of the present application;

Figure 14 is a schematic structural diagram of another message transmission device provided by an embodiment of the present application;

Figure 15 is a schematic structural diagram of a computer device provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Persons of ordinary skill in the art know that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

The terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus that encompasses a series of steps or units and need not be limited to those explicitly listed. Those steps or units may instead include other steps not expressly listed or inherent to such processes, methods, products or devices. steps or units.

The word "exemplary" as used herein means "serving as an example, example, or illustrative." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or superior to other embodiments.

In addition, in order to better explain the present application, numerous specific details are given in the following detailed description. It will be understood by those skilled in the art that the present application may be practiced without certain specific details. In some instances, methods, means, components and circuits that are well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

Some terms used in the embodiments of this application are explained below.

Jitter: changes in packet transmission delay and deviation from the ideal position.

Watchdog: A device (usually a timer or driver) used to monitor whether a continuously running system is normal and functional.

The technical solutions provided by the embodiments of this application can be applied to various communication systems, such as: long term evolution (LTE) system, fifth generation (5th generation, 5G) mobile communication system, wireless-fidelity (WiFi) ) system, future communication system, or a system integrating multiple communication systems, etc., are not limited by the embodiments of this application. Among them, 5G can also be called new radio (NR).

The technical solutions provided by the embodiments of this application can be applied to various communication scenarios, for example, can be applied to one or more of the following communication scenarios: enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (ultra -reliable low-latency communication (URLLC), machine type communication (MTC), massive machine type communications (mMTC), device-to-device (D2D), vehicle outreach ( vehicle to everything (V2X), vehicle to vehicle (vehicle to vehicle (V2V)), and the Internet of Things (IoT), etc.

Referring to Figure 1 and Figure 2, the network framework in the embodiment of this application includes:

Industrial communication terminal equipment, wireless network terminal equipment, access network equipment, core network equipment;

The industrial communication terminal equipment can be connected to the wireless network terminal equipment, such as the first industrial communication terminal equipment in Figure 1 or the third industrial communication terminal equipment and the fourth industrial communication terminal equipment in Figure 2. The industrial communication terminal equipment and the wireless network terminal The devices are connected, and the wireless network terminal equipment is connected to the core network equipment through the access network equipment. Industrial communication terminal equipment can also be connected to core network equipment, such as the second industrial communication terminal equipment in Figure 1.

1) The embodiments of this application can be applied to wired and wireless communication scenarios; Figure 1 and Figure 2 only illustrate a deployment scenario under 3GPP communication;

2) Application equipment and network equipment are logically separated and can be deployed together or separately during physical deployment;

3) The industrial terminal side only describes the one-to-one communication scenario between industrial terminals, and can also be applied to complex networking scenarios of industrial terminals (such as chain, ring, star, etc.);

4) Buffer/buffer location, the above picture is an example, it can also be deployed in other parts of the network.

Industrial communication terminal equipment and wireless network terminal equipment can be connected using the IC-1 (Industrial Communication Type 1) interface. The connection methods include wired, wireless or a mixture of the two. The protocol types supported by the IC-1 interface include: IP, Ethernet , WiFi, and other extended protocol types in industrial communication scenarios. The N6 interface can be used to connect industrial communication terminal equipment and core network equipment. The protocol types supported by the N6 interface include: IP, Ethernet, and other extended protocol types in industrial communication scenarios.

In the embodiment of this application, the number of industrial communication terminal equipment, wireless network terminal equipment, access network equipment, core network equipment and other equipment is not limited. The embodiment of this application only takes the network framework shown in Figure 1 as an example. illustrate.

Industrial communication user (industrial user equipment, i-UE) refers to industrial communication terminal equipment (terminal equipment used to provide data connectivity at industrial production sites), such as: PLC controllers or industrial computers, industrial servers, etc.

Wireless network terminal equipment, also known as wireless network (such as 3GPP) user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is to provide users with voice and/or or data connectivity devices. For example, handheld devices, vehicle-mounted devices, etc. with wireless connection capabilities. Currently, some examples of terminals are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

Core network equipment refers to equipment in the core network (CN) that provides business support for terminals. Currently, some examples of core network equipment are: access and mobility management function (AMF) entities, session management function (SMF) entities, user plane function (UPF) Entities, etc. are not listed here. Among them, the AMF entity can be responsible for terminal access management and mobility management; the SMF entity can be responsible for session management, such as user session establishment, etc.; the UPF entity can be a functional entity of the user plane, mainly responsible for connecting to external networks. It should be noted that the entity in this application can also be called a network element or a functional entity. For example, an AMF entity can also be called an AMF network element or an AMF functional entity. For example, an SMF entity can also be called an SMF network element or an SMF function. Entities, etc. are not specifically limited here.

Access network equipment refers to the radio access network (RAN) node (or equipment) that connects terminals to the wireless network, and can also be called a base station. Currently, some examples of RAN nodes are: evolved Node B (gNB), transmission reception point (TRP), evolved NodeB (evolved NodeB, eNB), radio network controller (RNC) ), Node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), Baseband unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), etc.

The messages transmitted in the communication system may be delay-sensitive messages that require low latency. These delay-sensitive messages generally have periodic characteristics, and the transmission network needs to take into account both the certainty (low jitter) and low latency of message transmission. Delay performance. Among them, industrial control messages need to meet the characteristics of periodic intensive small packet interaction, short interaction period, and high requirements for delay and jitter reliability. In addition, in scenarios such as voice transmission, video transmission, augmented reality (AR)/virtual reality (VR)/extended reality (XR), vehicle to everything (V2X), smart grid and other scenarios Similar latency-sensitive message transmission requirements are also common and have periodic characteristics. The current message transmission technology sends messages periodically. When the message is received in other periods due to network fluctuations, it still needs to wait for the periodic transmission of the message, and the message transmission delay is high.

In order to solve the above problem, embodiments of the present application provide a message transmission method, which is as follows.

In the embodiment of this application, the first industrial communication terminal equipment is the application sending end, the second industrial communication terminal equipment is the application receiving end, the 3GPP base station is the communication network sending end, and the 3GPP core network is the communication network receiving end.

Please refer to Figure 3, which shows a message transmission method provided by an embodiment of the present application. The method includes:

Step 301. The communication network receiving end obtains the transmission cycle requirement and transmission delay requirement of the first message in the communication service. The first message is a delay-sensitive message.

In this embodiment, the application sending end sends a message to the communication network sending end, the communication network sending end forwards the message to the communication network receiving end, and the communication network receiving end forwards the message to the application receiving end. The communication network receiving end can receive the first message from the communication network sending end, where the first message is a delay-sensitive message and needs to be forwarded by the communication network receiving end to the application receiving end in a timely manner. Because the first message is a delay-sensitive message, the communication network receiving end needs to determine the message forwarding time limit, that is, the communication network receiving end can obtain the sending cycle requirement and sending delay requirement of the first message, where The cycle requirement can limit the sending period of messages of the same type as the first message, and the sending delay requirement can limit the sending time point in each cycle of messages of the same type as the first message.

The communication network receiving end identifies packets that need to be submitted periodically and are sensitive to delay in communication services; specific implementation methods include but are not limited to: a) Network self-identification: the network receiving end uses key fields in the messages (such as Type, service of quality (QoS) field, session type, etc.) identification to determine whether it is a periodic delay-sensitive message; or the receiving end determines whether it is a periodic delay-sensitive message by learning the rules of historical messages message; b) Application collaboration: The application sender and/or receiver notifies the network receiver of packet types that need to be submitted periodically and are sensitive to delay; c)

Application and network collaborative configuration: The application and network negotiate in advance to formulate QOS mapping rules for data flows on the network communication side to determine the QoS flow where periodic delay-sensitive packets are located.

Step 302: The communication network receiving end determines the period timer according to the transmission cycle requirement, and determines the delay timer according to the transmission delay requirement.

In this embodiment, the communication network receiving end can set and start an adaptive buffer. After obtaining the sending cycle requirement and the sending delay requirement of the first message, the duration of the periodic timer can be determined based on the sending cycle requirement. The delay requirement determines the length of the delay timer, and then starts the delay timer and period timer in the adaptive buffer. Each first message of the same type is only sent in each cycle, and the delay timer in that cycle is Sent after the device takes effect.

Identify/obtain delivery cycle requirements and maximum packet delay requirements; specific implementation methods include but are not limited to: a) network self-identification: the network receiving end analyzes the rules of historical messages; b) application collaboration: application sender and/or The receiving end notifies the network receiving end of the delivery cycle requirements and maximum packet delay requirements of periodic delay-sensitive messages; the notification method is to send messages along the way or send separate messages; c) Application and network collaborative configuration: application and network Negotiate in advance the delivery cycle requirements for periodic delay-sensitive packets and the maximum packet delay requirements.

The communication network (receiving end or other links) starts the period timer CT and delay timer BF at the same time; the timer startup method includes but is not limited to: a) The timer startup time point can be the first/Nth period report The time when the message is received; b) The timer can also be configured to start at a fixed time point; c) In the scenario where the application sender and the application receiver are time synchronized, the time point when the timer starts can be the first/Nth time of the sender The moment when a periodic message is sent; or an agreed time point; d) The length of the CT timer can be set to the sending period of the periodic message or other lengths; e) The length of the BF timer is determined according to the network delay statistical performance.

Step 303. When the first message is received outside the periodic timer, the communication network receiving end forwards the first message to the application receiving end.

In this embodiment, after determining the periodic timer, the communication network receiving end can monitor whether the first message from the communication network sending end is received within the periodic timer. If the first message is received by the communication network in other periods, The receiving end indicates that the first message has timed out seriously and needs to be forwarded to the application receiving end immediately. Therefore, the communication network receiving end can forward the first message. The specific implementation method includes but is not limited to putting this type of message into the priority preemption queue. ,send.

Step 304. When the first message is received within the periodic timer but outside the delay timer, the communication network receiving end forwards the first message to the application receiving end, and the delay timer is smaller than the periodic timer.

In this embodiment, if the communication network receiving end receives the first message within the periodic timer, but receives it outside the normal forwarding time point in the period, for example, outside the delay timer, it means that the first message is received outside the delay timer. The first message has slightly timed out. Due to the delay sensitivity, it still needs to be forwarded to the application receiving end immediately. Therefore, the communication network receiving end can forward the first message. The specific implementation methods include but are not limited to setting the periodic sending queue and the priority preemption queue. The data received after the delay timer times out is put into the priority preemption queue and sent. The delay timer represents the forwarding time point of the message within the periodic timer. If the first message is received within the delay timer, the first message can be cached and forwarded only after the delay timer expires.

Specifically, the communication network receiving end can set up and start the adaptive buffer locally, and start the period timer and delay timer in the adaptive buffer to adaptively forward the received messages, and delay-sensitive timely Forwarded, ordinary messages are forwarded as usual.

The message transmission steps performed by the communication network receiving end in the embodiment of the present application can be referred to as shown in Figure 4. Step 401: The communication network receiving end identifies the delay-sensitive message; Step 402: The communication network receiving end obtains the delay-sensitive message. Transmission cycle requirements and transmission delay requirements; Step 403: The communication network receiving end starts the period timer and delay timer to receive the message; Step 404: The communication network receiving end determines whether the message is received within the period timer, if not, then Execute step 405, if yes, execute step 406; step 405: the communication network receiving end forwards the message; step 406: the communication network receiving end determines whether the message is received within the delay timer, if not, execute step 405 , if yes, step 407 is executed; step 407: the communication network receiving end caches the message and forwards it after the delay timer expires. Step 408: The communication network receiving end can adaptively adjust the length of the periodic timer and the delay timer according to the network delay and/or delay jitter.

Specifically, the schematic diagram of the effect of setting the adaptive de-jitter buffer at the communication network receiving end based on this message transmission step can be referred to as shown in Figure 5.

The embodiment of the present application determines the period timer according to the transmission period requirement of the received first message, and determines the delay timer according to the transmission delay requirement. If the first message is received outside the period timer, it is determined that it is affected by network fluctuations. It is too large and needs to be forwarded immediately. If the first message is received within the period timer but outside the delay timer, it is determined that it is less affected by network fluctuations, but it still exceeds the normal forwarding time and needs to be forwarded immediately. Only when it is received within the delay timer, it will be buffered until the delay timer ends and then forwarded, which not only reduces the jitter of message transmission, but also reduces the delay of message transmission.

The above describes the solution for setting the adaptive buffer in the communication network receiving end. The following is the setting of the adaptive buffer at the application receiving end. The adaptive buffer scheme is described.

Please refer to Figure 6, which is a schematic flow chart of another message transmission method according to an embodiment of the present application. The method includes:

Step 601. The application receiving end obtains the sending cycle requirement and sending delay requirement of the first message in the communication service. The first message is a delay-sensitive message.

In this embodiment, the application receiving end can obtain the sending cycle requirements and sending delay requirements locally.

Step 602: The application receiving end determines the period timer according to the sending cycle requirement, and determines the delay timer according to the sending delay requirement.

Step 603: When the first message is received outside the periodic timer, the application receiving end forwards the first message to the upper application.

Step 604. When the first message is received within the periodic timer but outside the delay timer, the application receiving end forwards the first message to the upper application, and the delay timer is smaller than the periodic timer.

In this embodiment, the actions performed by the application receiving end in steps 602 to 604 may refer to the actions performed by the communication network device in steps 302 to 304 in Figure 3 , which will not be described again here.

Step 605: The application receiving end counts the first number of packets received within the delay timer and the second number of packets received within the periodic timer.

In this embodiment, the length of the periodic timer and the delay timer determined based on the sending cycle requirement and the sending delay requirement may decrease in accuracy due to the influence of network fluctuations or other effects. Therefore, the application receiving end can calculate statistics within the preset time range. The first number of packets received within the delay timer and the second number of packets received within the periodic timer.

Step 606: The application receiving end adjusts the length of the delay timer according to the relationship between the first quantity and the first preset quantity range, and adjusts the length of the periodic timer according to the relationship between the second quantity and the second preset quantity range.

In this embodiment, within the preset time range, the number of messages received within the delay timer that meets the transmission delay requirement has a first preset number range, and the number of messages received within the periodic timer has a first preset number range. Two preset quantity ranges, the application receiving end can adjust the length of the delay timer according to the relationship between the first quantity and the first preset quantity range, the difference between the first quantity and the first preset quantity range, and the length of the delay timer In a positive feedback relationship, for example, when the first quantity is smaller than the first preset quantity range, the length of the delay timer is increased, and when the first quantity is larger than the first preset quantity range, the length of the delay timer is shortened. Similarly, the application receiving end can adjust the length of the periodic timer according to the relationship between the second quantity and the second preset quantity range. The difference between the second quantity and the second preset quantity range has a positive feedback relationship with the length of the periodic timer. , for example, when the second quantity is smaller than the second preset quantity range, the length of the periodic timer is increased, and when the second quantity is larger than the second preset quantity range, the length of the periodic timer is shortened.

Specifically, the application device may adaptively adjust the periodic timer and/or delay timer length by: a) counting the delay timer and/or the proportion of messages received within each periodic timer, and setting the corresponding high value; threshold and low threshold; b) If the proportion of reception in the delay timer exceeds the high threshold, shorten the length of the delay timer according to a certain step (for example, x ms); c) If the proportion of reception in the delay timer exceeds the high threshold If the ratio is lower than the low threshold, then increase the length of the delay timer according to a certain step size (for example, y ms); d) The period timer can also be dynamically adjusted according to the above mechanism.

Step 607: The application receiving end adjusts the message sending cycle according to the relationship between the delay timer and the preset delay range.

In this embodiment, the length of the delay timer needs to occupy a certain length in the sending cycle of the message, that is, there is a preset delay range relative to the sending cycle. When the length of the delay timer is less than the preset delay range, The sending cycle can be shortened, and when the length of the delay timer is greater than the preset delay range, the sending cycle can be increased.

Specifically, the application receiving end can jointly adjust the packet sending period and other parameters according to the statistical results of the periodic timer and/or the delay timer by a) setting the maximum value MaxT and the minimum value MinT of the delay timer; b) if the delay The value of the timer has reached the maximum value MaxT and needs to be further increased. Consider increasing the application's sending cycle or/and other parameter configurations (including but not limited to watchdog/survival time in industrial application scenarios). and other parameters); c) If the value of the delay timer has reached the minimum value MinT and needs to be further reduced, consider shortening the application's sending cycle or/and other parameter configurations (including but not limited to Watchdog/Survival Time in industrial application scenarios, etc. parameter).

Another message transmission step in the embodiment of this application can be referred to as shown in Figure 7. Step 701: The application receiving end identifies the delay-sensitive message; Step 702: The application receiving end obtains the transmission cycle requirement and transmission of the delay-sensitive message. Delay requirement; Step 703: The application receiving end starts the periodic timer and delay timer to receive the message; Step 704: The application receiving end determines whether the message is received within the periodic timer, if not, execute step 705, if so, then Execute step 706; Step 705: The application receiving end forwards the message; Step 706: The application receiving end determines whether the message is received within the delay timer. If not, execute step 705. If yes, execute step 707; Step 707: The application receiving end caches the message and forwards it after the delay timer expires; Step 708: The application receiving end adaptively adjusts the length of the period timer and delay timer according to the number of received messages; Step 709: Application reception The end adjusts the message sending cycle according to the delay timer length.

The application receiving end forwards the first message to the upper-layer application, and the schematic diagram of the effect of the application receiving end setting the adaptive de-jitter buffer based on the message transmission step is shown in Figure 8 . By setting up an adaptive de-jitter buffer in the application receiving end, on the premise of reducing packet delay jitter, large-delay packets are prevented from entering the buffer, delay jitter and delay performance are balanced, and the timer length is adaptively adjusted. and transmission cycle, improving the experience of periodic delay-sensitive messages and reducing resource consumption of the communication network.

In the embodiment of the present application, the communication network receiving end can also receive instruction information from the application receiving end to adjust the timer length, and the application receiving end can also receive instruction information from the communication network receiving end to adjust the timer length.

Please refer to FIG. 9 , which shows a schematic flowchart of collaboratively adjusting the timer length provided by an embodiment of the present application.

Step 901: Determine the deployment location of the de-jitter buffer; if deployed at the communication network receiving end, perform step 902; if deployed at the application receiving end, perform step 904.

Step 902: The application receiving end provides indication information to the communication network receiving end, and cooperates with the communication network receiving end to adjust the de-jitter buffer. The indication information can indicate the message transmission quality; the application receiving end provides indication information in a manner including but not limited to Send the message separately, carry the header field of the message, carry the payload/data of the message, and carry it in the tail of the message. Instruction information provided by the application receiver includes but is not limited to:

a) The message reception status of the application receiving end in each cycle (whether it matches the upper-layer application requirements, etc.);

b) Application of the message sending situation in each cycle of the receiving end (sending time point, message time drift, etc.);

c) The activation status of the application receiving end, whether it contains effective information interaction (such as control instructions that must be sent, must Feedback status information, etc.); if it does not contain effective information exchange (for example, it only contains keep-alive messages), the jitter buffer length can be appropriately increased;

Step 903: The communication network receiving end adjusts the de-jitter buffer according to the instruction information. A specific adjustment method is as follows:

a) Set the maximum value MaxT and minimum value MinT of the delay timer;

b) Set the delay timer's increasing step size StepUp (such as x ms) and shortening step size StepDown (such as y ms);

c) When the delay timer needs to be lengthened, increase it according to the StepUp step size, and the maximum value does not exceed MaxT;

d) When the delay timer needs to be shortened, shorten it according to the StepDown step size, and the minimum value is not lower than MinT;

e) The period timer can also be adjusted according to application information.

Step 904: The communication network receiving end provides indication information to the application receiving end, and cooperates with the application receiving end to adjust the de-jitter buffer; the communication network receiving end provides indication information in a manner including but not limited to sending separate messages and message header fields. Negotiation modification, negotiation modification of message payload (Payload/Data), negotiation modification of message tail; instruction information provided by the communication network receiving end includes but is not limited to:

a) Channel quality information on the network side (channel quality, load information, wireless network interference information, etc.);

b) The working status of network equipment (hardware load information, temperature and other information);

c) Transmission accuracy/bit error rate statistics on the network side;

Step 905: The application receiving end adjusts the de-jitter buffer according to the network information. A specific adjustment method is as follows;

a) Set the maximum value MaxT and minimum value MinT of the delay timer;

e) The period timer can also be adjusted according to network information.

In this embodiment, the application receiving end & the communication network receiving end collaboratively adjust the de-jitter buffer. The setting of the buffer timer is more in line with the application experience and network status, thereby achieving a better application experience and saving network resources.

The transmission process of periodic delay-sensitive messages is usually bidirectional. For example, during the interaction of industrial control messages, the control master station periodically issues control instructions to the slave station, and the slave station needs to periodically feedback status information to the master station; in this type of two-way In the scenario of periodic delay-sensitive message transmission, in order to ensure the effect of delay jitter and delay, it is necessary to set up de-jitter buffers at both ends of the communication (or other links). Since the information transmitted at both ends of the communication is relevant, the buffers at both ends of the communication need to be coordinated to improve the certainty and real-time nature of information interaction.

Taking the two-way communication between device A and device B as an example, both devices have a sender buffer and a receiver buffer; the sender buffer is used for periodic message sending; the receiver buffer is used to submit control messages to the upper application. Scene jitter, taking into account real-time performance. Please refer to the buffer adjustment process diagram shown in Figure 10.

Step 1001: Determine whether there is a central control node (master control node) between the communicating parties, otherwise execute step 1002, and if so, execute step 1004.

Step 1002: The communication parties exchange information and coordinate the buffer information. The specific buffer information collaboration method is as follows:

Devices A and B can send their own buffer information (such as timing length, reception status, etc.) to notify the peer.

Step 1003: Both communicating parties adjust the length of the local delay timer based on the buffer information. Specifically, devices A and B can negotiate unified/differential buffer timer lengths based on the buffer information of the opposite end.

In one example, the communicating parties can also adjust the message sending cycle based on the relationship between the adjusted delay timer length and the preset delay range. The specific adjustment methods are as follows:

Devices A and B can adjust the message sending parameters (including but not limited to the message sending cycle) based on the receiving buffer message reception status of the peer-end interaction. Among them, when the length of the adjusted delay timer is less than the preset When setting the delay range, reduce the sending cycle. When the length of the adjusted delay timer is greater than the preset delay range, increase the sending cycle;

a) In the scenario where the receiving end buffer of the opposite end has reached the maximum value and needs to be adjusted upward, the local end may consider increasing the message sending cycle;

b) In the scenario where the receiving end buffer of the opposite end has reached the minimum value and needs to be adjusted downward, the local end may consider shortening the message sending cycle.

Step 1004: The central control node collects child node buffer information.

Both communicating parties send buffer information to the central control node. The buffer information includes the length of the delay timer, the adjustment specifications of the delay timer determined by the central control node based on the buffer information, and the length and preset value of the delay timer. The relationship between the delay range determines the adjustment specifications of the transmission cycle, and then generates instructions based on the adjustment specifications.

Step 1005: The central control node adjusts the sending parameter configuration of the sub-node through instructions. For example, the communicating parties adjust the length of the delay timer according to the instructions of the central control node; the specific adjustment method is as follows:

The central control node (master control node) sends the above instructions to the communicating parties based on the buffer information fed back by the subordinate sub-nodes, so that the communicating parties can adjust their respective delay timer lengths and message sending cycles, and can also adjust each sub-node The message sending time offset, adjusting the logical relationship of message sending between child nodes, network configuration, etc. are not limited here.

The embodiment of the present application improves the certainty and real-time performance of delay-sensitive message delivery through buffer collaboration between communicating parties.

In the communication network, short-term message concurrency and multiple services competing for scheduling resources are inevitable, resulting in delay and jitter in the transmission of scheduling messages. The QoS adjustment of the network itself is more inclined to the multi-user level, user level or business flow level adjustment, and the cost of adjustment at the packet-by-package level is huge; in some scenarios, in order to ensure the real-time performance of periodic message transmission, the network side adopts non-confirmed communication. Mechanisms (such as user datagram protocol (UDP)/IP, 3GPP's unconfirmed mode (UM), etc.) further increase the difficulty of QoS adjustment at the packet-by-packet level.

Please refer to Figure 11, which is a schematic flowchart of a QoS adjustment provided by an embodiment of the present application.

Step 1101: Determine the deployment location of the de-jitter buffer; if deployed at the communication network receiving end, execute step 1102; if deployed at the application receiving end, execute step 1103;

Step 1102: The communication network receiving end counts the arrival of messages and feeds the information back to the communication network sending end; the specific implementation plan is as follows:

a) The receiving end buffer counts the arrival of messages at the packet-by-packet level (whether a message arrives in each cycle and whether it arrives after the delay timer times out);

b) The communication network receiving end collects the information and sends the information along with the message or by sending the message separately. Feedback to the sending end of the communication network.

Step 1103: The application receiving end collects statistics on the arrival of messages and feeds the information back to the communication network receiving end; the specific implementation plan is as follows:

a) The receiving end buffer counts the packet arrival status at the packet-by-packet level (whether a packet arrives in each cycle and whether it arrives after the TBf timer times out);

b) The receiving end of the application device collects the information and feeds the information back to the receiving end of the communication network by sending the message along with the message, sending the message separately, or sharing the buffer;

c) The communication network receiving end collects the information and feeds the information back to the network sending end by sending the message along with the message or sending the message separately.

Step 1104: The communication network receiving end adjusts the QoS of the user and the service flow according to the feedback information to ensure the certainty of message transmission and ensure the business experience; the QoS that the communication network can guarantee includes but is not limited to the following:

a) The user's network slice identification, network slice attributes/configuration (priority, bandwidth, delay guarantee, etc.);

b) QoS level, scheduling priority, preemption attributes, etc. of the service flow in which the user periodic messages are located;

c) The degree of transmission redundancy of the service flow where the user periodic messages are located (such as transmission bit error rate threshold control, modulation and coding method, use of repeated transmission mechanism, etc.).

The adaptive buffer in the embodiment of the present application effectively counts the reception of packets at a packet-by-packet level, and further feeds back to the communication network, so that QoS adjustments for network transmission packets can be made in a timely manner.

In the scenario where E2E has deployed the 802.1Qbv and 802.1Qch protocols of time-sensitive networking (TSN), periodic data flows are put into periodic queues and sent periodically to ensure that the delay jitter is minimized; however, it is not comprehensive Consider the time when a message is received; this results in messages with a large transmission delay being put into the buffer and delayed until the next sending window. For TSN scenarios, in order to reduce the impact on data packets with large transmission delays, the following adjustments can be made.

Please refer to Figure 12, which is a schematic flowchart of another message transmission method provided by an embodiment of the present application. The method includes:

Step 1201: The communication network receiving end adds a high-priority preemption queue. The priority of the high-priority preemption queue is higher than the periodic transmission queue of the TSN.

In this embodiment, the high-priority preemption queue can forward messages prior to the periodic transmission queue of the TSN. Among them, step 1201 can be set only once and will not participate in repeated implementation of the plan.

Step 1202: The communication network receiving end calculates the transmission delay of the service message. Calculation methods include but are not limited to the following methods:

a) If the sender and receiver have achieved TSN time synchronization, the receiver obtains the timestamp TimeStamp1 and local time Time2 carried in the message, and subtracts the two to obtain the transmission time of the message: TransmissionTime=Time2-TimeStamp1;

b) If the sender and receiver do not deploy TSN time synchronization, the receiver can use the reception time of the first/Nth received periodic message as the starting point TimeStart, and record the corresponding message sequence number SN_Start; then Determine the transmission time of the message based on the local time Time2, the message sending cycle CycleTime and the current sequence number SN: TransmissionTime=Time2-TimeStart-(CycleTime*(SN-SN_Start)); the sequence numbers SN and SN_Start can be counted by the receiving end or calculated and obtained through the sequence number information of the message itself.

Step 1203: The communication network receiving end sets the message transmission delay threshold value Thd; the setting method of the threshold value includes but is not limited to the following methods:

a) Obtained by multiplying the coefficient α according to the application's packet sending cycle CycleTime; that is: Thd=CycleTime*α, where α is used to balance the jitter of the message. When the jitter increases, α decreases. When the jitter decreases, α increases. ;

b) On the basis of the above Thd, buffer queue processing delay and receiving end processing delay can be reserved;

c) Negotiate with the application to determine the delay threshold value Thd for packet transmission that the application can tolerate, and set it through pre-negotiation, active application notification, etc., where the delay threshold value is based on the transmission of the service message. The cycle is determined.

Step 1204: The communication network receiving end determines whether the transmission delay of the message exceeds the threshold value Thd. If yes, execute step 1205; if not, execute step 1206.

Step 1205: The transmission delay of the message exceeds the threshold value Thd. The communication network receiving end puts the message into the high-priority preemption queue and submits it immediately; ensuring the timeliness of the message.

In this embodiment, the high-priority preemption queue can submit messages in time without waiting for buffering in the periodic queue.

Step 1206: The communication network receiving end puts the message into the periodic transmission queue of TSN and submits it according to the transmission period set by TSN.

The embodiment of this application adds a high-priority preemption queue at the communication network receiving end, which is superior to TSN queue transmission, increases the packet delay calculation method, sets the threshold value of the packet transmission delay, and determines the waiting delay of the packet. , submit when the threshold value is exceeded, avoiding buffering and waiting, and improving message timeliness.

The message transmission method is described above, and the device for executing the method is described below.

Please refer to Figure 13, which is a schematic structural diagram of a message transmission device provided by an embodiment of the present application. The device 130 includes:

The acquisition unit 1301 is used to obtain the transmission cycle requirement and transmission delay requirement of the first message in the communication service, where the first message is a delay-sensitive message;

Determining unit 1302, configured to determine the period timer according to the transmission cycle requirement, and determine the delay timer according to the transmission delay requirement;

Forwarding unit 1303, configured to forward the first message to the next node when the first message is received outside the periodic timer; when the first message is received within the periodic timer but outside the delay timer, When the time comes, the first message is forwarded to the next node, and the delay timer is smaller than the period timer.

Optionally, the device 130 also includes an adjustment unit 1304, which is specifically used to:

Count the first number of packets received within the delay timer, and the second number of packets received within the periodic timer;

The length of the delay timer is adjusted according to the relationship between the first quantity and the first preset quantity range, and the length of the periodic timer is adjusted according to the relationship between the second quantity and the second preset quantity range.

Optionally, the adjustment unit 1304 is also used to:

Adjust the message sending cycle according to the relationship between the delay timer and the preset delay range.

Optionally, the difference between the first quantity and the first preset quantity range has a positive feedback relationship with the length of the delay timer;

The difference between the second quantity and the second preset quantity range has a positive feedback relationship with the length of the periodic timer.

Receive indication information from network equipment, the indication information indicates transmission quality;

Adjust the length of the delay timer and period timer according to the instruction information.

Receive buffer information from the network device. The buffer information includes the length of the delay timer;

Adjust the length of the local delay timer based on buffer information.

Optionally, the adjustment unit 1304 is also used to:

The message sending cycle is adjusted according to the relationship between the adjusted delay timer length and the preset delay range.

Optionally, the adjustment unit 1304 is also used to:

When the length of the adjusted delay timer is less than the preset delay range, reduce the sending cycle;

When the length of the adjusted delay timer is greater than the preset delay range, the sending cycle is increased.

Send buffer information to the central control node. The buffer information includes the length of the delay timer;

The length of the delay timer is adjusted according to the instruction from the central control node, and the instruction is the adjustment specification of the delay timer determined by the central control node based on the buffer information.

Optionally, the instruction also includes the adjustment specifications of the transmission cycle determined by the central control node based on the relationship between the adjusted delay timer length and the preset delay range. The adjustment unit 1304 is also used to:

Adjust the message sending cycle according to the sending cycle adjustment specifications.

Obtain the arrival status of packets in the delay timer and period timer;

Adjust the service quality of message transmission according to the arrival situation.

The obtaining unit 1301 of the device 130 is used to perform step 301 in the method embodiment of Figure 3 and step 601 in the method embodiment of Figure 6, and the determining unit 1302 of the device 130 is used to perform step 302 in the method embodiment of Figure 3 and Figure 6 In step 602 in the method embodiment, the forwarding unit 1303 of the device 130 is used to perform steps 303 to 304 in the method embodiment of Figure 3 and steps 602 to 604 in the method embodiment of Figure 6, which will not be described again here.

Please refer to Figure 14, which is a schematic structural diagram of another message transmission device provided by an embodiment of the present application. The device 140 includes:

The obtaining unit 1401 obtains the transmission delay of the service message;

The forwarding unit 1402 is configured to forward the service packet through the first queue when the transmission delay exceeds the delay threshold; and forward the service packet through the second queue period when the transmission delay does not exceed the delay threshold. Sexual forwarding.

Optionally, the delay threshold is determined based on the sending cycle of the service message.

The acquisition unit 1401 of the device 140 is used to perform step 1202 in the method embodiment of Figure 12 and step 602 in the method embodiment of Figure 6, and the forwarding unit 1402 of the device 140 is used to perform steps 1203 to 1206 in the method embodiment of Figure 12 , which will not be described again here.

Figure 15 shows a possible logical structure diagram of a computer device 150 provided for an embodiment of the present application. Computer device 150 includes: processor 1501, communication interface 1502, storage system 1503, and bus 1504. The processor 1501, the communication interface 1502, and the storage system 1503 are connected to each other through a bus 1504. In the embodiment of the present application, the processor 1501 is used to control and manage the actions of the computer device 150. For example, the processor 1501 is used to implement the methods in Figure 3, Figure 6, Figure 9, Figure 10, Figure 11 and Figure 12 The steps performed by the communication network receiving end or the application receiving end in the example. The communication interface 1502 is used to support the computer device 150 to communicate. Storage system 1503 is used to store program codes and data of the computer device 150 .

The processor 1501 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with this disclosure. The processor 1501 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The bus 1504 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 15, but it does not mean that there is only one bus or one type of bus.

The forwarding unit 1303 in the device 130 is equivalent to the communication interface 1502 in the computer device 150 , and the obtaining unit 1301 , the determining unit 1302 and the adjusting unit 1304 in the device 130 are equivalent to the processor 1501 in the computer device 150 .

The forwarding unit 1402 in the device 140 is equivalent to the communication interface 1502 in the computer device 150, and the acquisition unit 1401 in the device 140 is equivalent to the processor 1501 in the computer device 150.

The computer device 150 of this embodiment may correspond to the communication network receiving end or the application receiving end in the method embodiments of FIG. 3, FIG. 6, FIG. 9, FIG. 10, FIG. 11 and FIG. 12. The communication interface in the computer device 150 1502 can implement the functions and/or various steps performed by the communication network receiving end or the application receiving end in the method embodiments of Figures 3, 6, 9, 10, 11 and 12. For the sake of simplicity, , which will not be described in detail here.

It should be understood that the division of units in the above device is only a division of logical functions. In actual implementation, all or part of the units may be integrated into a physical entity or physically separated. And the units in the device can all be implemented in the form of software calling through processing components; they can also all be implemented in the form of hardware; some units can also be implemented in the form of software calling through processing components, and some units can be implemented in the form of hardware. For example, each unit can be a separate processing element, or it can be integrated and implemented in a certain chip of the device. In addition, it can also be stored in the memory in the form of a program, and a certain processing element of the device can call and execute the unit. Function. In addition, all or part of these units can be integrated together or implemented independently. The processing element described here can also be a processor, which can be an integrated circuit with signal processing capabilities. During the implementation process, each step of the above method or each unit above can be implemented by an integrated logic circuit of hardware in the processor element or implemented in the form of software calling through the processing element.

In one example, the unit in any of the above devices may be one or more integrated circuits configured to implement the above method, such as: one or more application specific integrated circuits (ASICs), or one or Multiple microprocessors (digital signal processors, DSPs), or one or more A field programmable gate array (FPGA), or a combination of at least two of these integrated circuit forms. For another example, when the unit in the device can be implemented in the form of a processing element scheduler, the processing element can be a general processor, such as a central processing unit (CPU) or other processor that can call a program. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

In another embodiment of the present application, a computer-readable storage medium is also provided. Computer-executable instructions are stored in the computer-readable storage medium. When the processor of the device executes the computer-executed instructions, the device executes the above method embodiment. A method executed by the communication network receiving end or the application receiving end.

In another embodiment of the present application, a computer program product is also provided. The computer program product includes computer-executable instructions, and the computer-executable instructions are stored in a computer-readable storage medium. When the processor of the device executes the computer execution instruction, the device executes the method executed by the communication network receiving end or the application receiving end in the above method embodiment.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or coupling or communication connection between each other shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), magnetic disk or optical disk and other media that can store program code. .

Claims

A message transmission method, characterized by including:

Obtain the sending cycle requirement and sending delay requirement of the first message in the communication service, where the first message is a delay-sensitive message;

Determine a period timer according to the sending cycle requirement, and determine a delay timer according to the sending delay requirement;

When the first message is received outside the periodic timer, forward the first message to the next node;

When the first message is received within the periodic timer but outside the delay timer, the first message is forwarded to the next node, and the delay timer is smaller than the delay timer. Describe the periodic timer.
The method of claim 1, further comprising:

Count the first number of messages received within the delay timer and the second number of messages received within the periodic timer;

The length of the delay timer is adjusted according to the relationship between the first quantity and the first preset quantity range, and the length of the periodic timer is adjusted according to the relationship between the second quantity and the second preset quantity range.
The method according to claim 2, wherein after adjusting the length of the delay timer according to the relationship between the first quantity and the first preset quantity range, the method further includes:

The message sending cycle is adjusted according to the relationship between the delay timer and the preset delay range.
The method according to claim 2 or 3, characterized in that the difference between the first quantity and the first preset quantity range has a positive feedback relationship with the length of the delay timer;

The difference between the second number and the second preset number range has a positive feedback relationship with the length of the periodic timer.
The method of claim 1, further comprising:

Receive indication information from the network device, the indication information indicating transmission quality;

Adjust the length of the delay timer and the period timer according to the indication information.
The method of claim 1, further comprising:

Receive buffer information from a network device, where the buffer information includes the length of a delay timer of the network device;

Adjust the length of the local delay timer according to the buffer information.
The method according to claim 6, characterized in that after adjusting the length of the local delay timer according to the buffer information, the method further includes:

The message sending cycle is adjusted according to the relationship between the adjusted length of the delay timer and the preset delay range.
The method according to claim 7, wherein adjusting the message sending cycle according to the relationship between the adjusted length of the delay timer and the preset delay range includes:

When the adjusted length of the delay timer is less than the preset delay range, reduce the sending cycle;

When the adjusted length of the delay timer is greater than the preset delay range, the sending period is increased.
The method of claim 1, further comprising:

Send buffer information to the central control node, where the buffer information includes the length of the delay timer of the network device;

The length of the delay timer is adjusted according to an instruction from the central control node, where the instruction is an adjustment specification of the delay timer determined by the central control node based on the buffer information.
The method of claim 9, wherein the instruction further includes a transmission period determined by the central control node based on the adjusted relationship between the length of the delay timer and the preset delay range. Adjusting specifications. After adjusting the length of the delay timer according to instructions from the central control node, the method further includes:

The sending cycle of the message is adjusted according to the adjustment specification of the sending cycle.
The method of claim 1, further comprising:

Obtain the arrival status of messages within the delay timer and the periodic timer;

Adjust the service quality of message transmission according to the arrival situation.
A message transmission method, characterized by including:

Obtain the transmission delay of business packets;

When the transmission delay exceeds the delay threshold, forward the service message through the first queue;

When the transmission delay does not exceed the delay threshold, the service packet is periodically forwarded through the second queue.
The method according to claim 12, characterized in that the delay threshold value is determined according to the sending cycle of the service message.
A message transmission device, characterized by including:

An acquisition unit, configured to acquire the transmission cycle requirement and transmission delay requirement of the first message in the communication service, where the first message is a delay-sensitive message;

A determining unit configured to determine a period timer according to the sending cycle requirement and determine a delay timer according to the sending delay requirement;

A forwarding unit configured to forward the first message when the first message is received outside the periodic timer; when the first message is received within the periodic timer but within When received outside the delay timer, the first message is forwarded, and the delay timer is smaller than the period timer.
The device according to claim 14, characterized in that the device further includes an adjustment unit, and the adjustment unit is specifically used for:

Count the first number of messages received within the delay timer and the second number of messages received within the periodic timer;

The length of the delay timer is adjusted according to the relationship between the first quantity and the first preset quantity range, and the length of the periodic timer is adjusted according to the relationship between the second quantity and the second preset quantity range.
The device according to claim 15, characterized in that the adjustment unit is also used for:

The message sending cycle is adjusted according to the relationship between the delay timer and the preset delay range.
The device according to claim 15 or 16, characterized in that the difference between the first quantity and the first preset quantity range has a positive feedback relationship with the length of the delay timer;

The difference between the second number and the second preset number range has a positive feedback relationship with the length of the periodic timer.
The device according to claim 14, characterized in that the device further comprises an adjustment unit, the adjustment unit The unit is specifically used for:

Receive indication information from the network device, the indication information indicating transmission quality;

Adjust the length of the delay timer and the period timer according to the indication information.
The device according to claim 14, characterized in that the device further includes an adjustment unit, and the adjustment unit is specifically used for:

Receive buffer information from a network device, where the buffer information includes the length of a delay timer of the network device;

Adjust the length of the local delay timer according to the buffer information.
The device according to claim 19, characterized in that the adjustment unit is also used for:

The message sending cycle is adjusted according to the relationship between the adjusted length of the delay timer and the preset delay range.
The device according to claim 20, characterized in that the adjustment unit is also used for:

When the adjusted length of the delay timer is less than the preset delay range, reduce the sending cycle;

When the adjusted length of the delay timer is greater than the preset delay range, the sending period is increased.
The device according to claim 14, characterized in that the device further includes an adjustment unit, and the adjustment unit is specifically used for:

Send buffer information to the central control node, where the buffer information includes the length of the delay timer of the network device;

The length of the delay timer is adjusted according to an instruction from the central control node, where the instruction is an adjustment specification of the delay timer determined by the central control node based on the buffer information.
The device according to claim 22, wherein the instruction further includes a transmission period determined by the central control node based on the adjusted relationship between the length of the delay timer and the preset delay range. Adjustment specifications, the adjustment unit is also used for:

The sending cycle of the message is adjusted according to the adjustment specification of the sending cycle.
The device according to claim 14, characterized in that the device further includes an adjustment unit, and the adjustment unit is specifically used for:

Obtain the arrival status of messages within the delay timer and the periodic timer;

Adjust the service quality of message transmission according to the arrival situation.
A message transmission device, characterized by including:

The acquisition unit obtains the transmission delay of the service message;

A forwarding unit configured to forward the service message through the first queue when the transmission delay exceeds the delay threshold; and forward the service message through the first queue when the transmission delay does not exceed the delay threshold. The above service packets are forwarded periodically through the second queue.
The device according to claim 25, characterized in that the delay threshold value is determined according to the sending cycle of the service message.
A computer device, characterized by comprising: a processor coupled to a memory,

The processor is configured to execute instructions stored in the memory, so that the computer device performs the method according to any one of claims 1 to 11.
A computer device, characterized by comprising: a processor coupled to a memory,

The processor is configured to execute instructions stored in the memory, so that the computer device performs the method according to any one of claims 12 to 13.
A computer-readable storage medium, characterized in that instructions are stored in the computer-readable storage medium, and when the instructions are executed by a processor, the method according to any one of claims 1 to 13 is implemented.
A computer program product, characterized in that the computer program product includes computer program code, characterized in that when the computer program code is run on a computer, it implements any one of claims 1 to 13 Methods.