CN117834390A - Message transmission method, communication device, storage medium, and program product - Google Patents
Message transmission method, communication device, storage medium, and program product Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0866—Checking the configuration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0866—Checking the configuration
- H04L41/0869—Validating the configuration within one network element
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
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Abstract
The embodiment of the application provides a message transmission method, communication equipment, a storage medium and a program product, wherein the message transmission method transmits a target message carrying time deviation information to an intermediate node, so that the intermediate node determines the time of the intermediate node transmitting the target message according to the time deviation information, and the target message is conveniently transmitted at the determined time position, thereby realizing the deterministic time transmission of service messages and ensuring the communication quality.
Description
Technical Field
Embodiments of the present disclosure relate to the field of communications technologies, and in particular, to a message transmission method, a communication device, a computer storage medium, and a computer program product.
Background
Communication networks are highways in the information age, and the ever increasing demands of customers are continually driving changes in communication networks. In the related art, the ethernet technology is used for transmitting the client information, and is widely applied in the fields of industrial production lines, vehicle systems and the like, but the ethernet technology is only used for transmitting the client information in a best effort mode, so that accurate transmission delay and jitter of the client information cannot be ensured, and the communication quality is affected.
Disclosure of Invention
The embodiment of the application provides a message transmission method, communication equipment, a computer storage medium and a computer program product, which aim to realize deterministic service transmission and ensure communication quality.
In a first aspect, an embodiment of the present application provides a method for transmitting a packet, including:
and sending a target message carrying time deviation information to an intermediate node, so that the intermediate node determines the time of sending the target message by the intermediate node according to the time deviation information.
In a second aspect, an embodiment of the present application provides a method for transmitting a packet, including:
receiving a target message carrying time deviation information sent by a source node;
and sending the target message to a sink node, so that the sink node determines the time for sending the target message to the user equipment according to the time deviation information.
In a third aspect, an embodiment of the present application provides a method for transmitting a packet, including:
receiving a target message carrying time deviation information, which is sent by an intermediate node, wherein the target message is sent to the intermediate node in advance by a source node;
and determining the time for transmitting the target message to the user equipment according to the time deviation information.
In a fourth aspect, embodiments of the present application provide a communication device, including:
at least one processor;
at least one memory for storing at least one program;
the message transmission method as described above is implemented when at least one of said programs is executed by at least one of said processors.
In a fifth aspect, embodiments of the present application provide a computer readable storage medium having stored therein a processor executable program for implementing a message transmission method as described above when executed by a processor.
In a sixth aspect, embodiments of the present application provide a computer program product comprising a computer program or computer instructions stored in a computer readable storage medium, the computer program or computer instructions being read from the computer readable storage medium by a processor of a computer device, the processor executing the computer program or computer instructions to cause the computer device to perform a method of transmitting a message as described above.
According to the message transmission method, the communication device, the storage medium and the program product provided by the embodiment of the application, the message transmission method sends the target message carrying the time deviation information to the intermediate node, so that the intermediate node determines the time for the intermediate node to send the target message according to the time deviation information, the target message is conveniently forwarded at the determined time position, the deterministic time forwarding of the service message is realized, and the communication quality is ensured.
Drawings
Fig. 1 is a schematic diagram of a network system for performing a message transmission method according to an embodiment of the present application;
fig. 2 is a schematic diagram of an ethernet packet according to an embodiment of the present application;
FIG. 3 is a flow chart of a message transmission method according to an embodiment of the present application;
fig. 4 is a schematic diagram of a transmission reference time position in a message transmission method according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a positional relationship between a target message and a reference time according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of the structure of an O code block as a flag code block according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an S code block+t code block as a flag code block according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an S-code block after ethernet encoding according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an S code block carrying header time information according to an embodiment of the present application;
fig. 10 is a flowchart of a message transmission method according to another embodiment of the present application;
FIG. 11 is a schematic diagram of a message transmission method according to an embodiment of the present application, in which a feature code block or a target message is sent at all positions;
fig. 12 is a schematic structural diagram of an S code block carrying a sequence number value according to an embodiment of the present application;
Fig. 13 is a schematic structural diagram of an S code block carrying a sequence number value and a time reference position offset value according to an embodiment of the present application;
fig. 14 is a schematic structural diagram of a feature code block carrying a sequence number value and a time reference position offset value according to an embodiment of the present application;
fig. 15 is a schematic diagram of a transmission reference time position in a message transmission method according to another embodiment of the present application;
fig. 16 is a flowchart of a message transmission method according to another embodiment of the present application;
FIG. 17 is a flowchart of a method for transmitting a target message to a destination node according to an embodiment of the present application;
fig. 18 is a flowchart of a message transmission method according to another embodiment of the present application;
fig. 19 is a flowchart of determining a time for transmitting a target message to a ue according to time offset information in a message transmission method according to an embodiment of the present application;
fig. 20 is a flowchart of determining a time for transmitting a target message to a user equipment according to a reference time and time deviation information of a source node in a message transmission method according to an embodiment of the present application;
FIG. 21 is a diagram illustrating a reference time position generated in a message transmission method according to an embodiment of the present disclosure;
Fig. 22 is a flowchart of a message transmission method according to an embodiment of the present application after determining a time for transmitting a target message to a ue;
FIG. 23 is a schematic diagram of a deterministic forwarding process of service packets according to an embodiment of the present application;
fig. 24 is a schematic structural diagram of a service packet carrying a packet position deviation value according to an embodiment of the present application;
fig. 25 is a schematic structural diagram of a communication device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It should be noted that although functional block division is performed in a device diagram and a logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or 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 words "further," "exemplary," or "optionally" in the embodiments herein are used to indicate by way of example, illustration, or description that the embodiment is not to be interpreted as preferred or advantageous over other embodiments or designs. The use of the words "further," "exemplary," or "optionally" and the like is intended to present the relevant concepts in a concrete fashion.
The communication network is an expressway in the information age, customer demands cause the communication network to change, the Ethernet technology in the related art is based on the fact that the best effort mode is adopted to transmit customer information, the transmission delay and jitter demands of the customer information cannot be guaranteed, particularly, the Ethernet equipment in the related art adopts a store-and-forward mode to process messages, the messages need to be subjected to a plurality of functional modules such as table lookup, analysis, speed limiting, enqueue, caching, scheduling and the like in the equipment, and the messages of all physical ports in the equipment share the resource modules, so that the service time of the messages of all the physical ports for obtaining the functional modules is uncertain, the time for completing the processing is not fixed, and the delay time of the messages in each equipment is uncertain. Along with the great use of the Ethernet technology in industrial production lines and vehicles, high requirements are put on the transmission quality of client messages, and the Ethernet technology in the related technology forwards the messages based on the thought of best effort, so that the characteristic requirements of bounded end-to-end delay and jitter in a specific application scene cannot be ensured. In order to solve the message delay time and jitter, the message delay change condition needs to be determined, and for this purpose, a time reference standard is provided for the message transmission position, so that the deterministic forwarding of the message can be realized based on the time reference standard. It should be understood that, in the case of speed determination, the product of time and speed is a distance, so the transmission mode of the present application may also be regarded as a transmission mode for providing a position reference, namely a position reference, and the principle of the transmission mode is consistent with that of the time reference.
Based on the above, the application provides a message transmission method, a communication device, a storage medium and a program product, wherein the message transmission method sends a target message carrying time deviation information to an intermediate node, so that the intermediate node determines the time of the intermediate node sending the target message according to the time deviation information, so that the target message is forwarded at the determined time position, the deterministic time forwarding of the service message is realized, and the communication quality is ensured.
The technical solution of the embodiment of the application can be applied to various communication systems, for example: a wideband code division multiple access mobile communication system (wideband code division multiple access, WCDMA), an evolved universal terrestrial radio access network (evolved universal terrestrial radio access network, E-UTRAN) system, a next generation radio access network (next generation radio access network, NG-RAN) system, a long term evolution (long term evolution, LTE) system, a worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, a fifth generation (5th Generation,5G) system such as a new generation radio access technology (new radio access technology, NR), and future communication systems such as a 6G system, etc.
The technical scheme of the embodiment of the application can be applied to various communication technologies, such as microwave communication, light wave communication, millimeter wave communication and the like. The embodiment of the application does not limit the adopted specific technology and the specific equipment form.
Fig. 1 is a schematic diagram of a network system for performing a packet transmission method according to an embodiment of the present application, where the network system includes a source node 100, an intermediate node 200, and a sink node 300, where the source node 100 forwards a client packet to the intermediate node 200, and the intermediate node 200 further forwards the client packet to the sink node 300, and the sink node 300 is connected to an external user device and is configured to forward the client packet to the user device. It should be noted that the "node" may be a specific network device, a device group, or a device system, and is not limited herein; the number of intermediate nodes 200 may be plural, and the working principle of each intermediate node 200 is the same, so that the network system shown in fig. 1 and the following related embodiments are only illustrated and described with one intermediate node 200, which should not be construed as a limitation of the embodiments of the present application.
In one embodiment, a User Equipment may be referred to as an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. For example, the user device may be a cellular phone, a cordless phone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capability, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or future 5G or more network, etc., which is not particularly limited in this embodiment.
Fig. 2 is a schematic diagram of an ethernet packet provided in the embodiment of the present application, where each ethernet packet is encoded by 64/66 and includes a start code block (also called an S code block or an S block), a plurality of data code blocks (also called a D code block or a D block), and an end code block (also called a T code block or a T block), and the number n of D code blocks is not limited. The institute of electrical and electronics engineers (Institute of Electrical and Electronics Engineers, IEEE) 8.2.3 standard in the related art has established a 64/66 coding rule that there are 8 different types of T-code blocks in the IEEE802.3 standard: t0, T1, T2, T3, T4, T5, T6, T7, wherein no client content is carried in the T0 block, 1 byte of client content is carried in the T1 block, 2 bytes of client content is carried in the T2 block, and so on, 7 bytes of client content is carried in the T7 block. In addition to these three code blocks, there may be a free code block (also referred to as an I code block or I block), a fault maintenance management code block (also referred to as an O code block or O block).
Fig. 3 is a flowchart of a message transmission method according to an embodiment of the present application. As shown in fig. 3, the method for transmitting a message may be applied to, but not limited to, the source node 100 in the network system shown in fig. 1, and may include, but not limited to, step S1000.
Step S1000: and sending the target message carrying the time deviation information to the intermediate node, so that the intermediate node determines the time of sending the target message by the intermediate node according to the time deviation information.
In the step, the source node sends the target message carrying the time deviation information to the downstream intermediate node, so that the intermediate node determines the time for sending the target message to the destination node according to the time deviation information in the target message, thereby realizing the positioning of the sending position of the service message and ensuring the deterministic forwarding of the service message.
In an embodiment, the time deviation information represents a deviation value between the sending time of the target message and the reference time, in one case, the reference time may be multiple and periodically set, and the time deviation information may be represented in a form as a deviation value between the sending time of the target message and any one of the reference times.
In one embodiment, the time at which the intermediate node sends the target message is determined by the reference time and the time offset information.
In an embodiment, when the reference time is multiple, the multiple reference times are periodically distributed, and the time of the intermediate node for transmitting the target message is determined by the time deviation information and one reference time corresponding to the transmission time preset of the target message, where one reference time corresponding to the transmission time preset of the target message may be selected according to a specific situation, for example, may be one reference time closest to the transmission time of the target message, or one reference time next closest to the transmission time of the target message, and so on; that is, the transmitting port of the source node may periodically transmit the reference time when transmitting the client message, and as the transmitted client message covers the message position information of the message transmission time from the reference time, the subsequent node can further locate the accurate position of the message according to the client message, so as to forward the client message at the determined time position according to the reference time and the time deviation information carried by the message, thereby implementing deterministic time forwarding of the client service.
In one embodiment of the present application, the method for transmitting a message may further include, but is not limited to, step S2000.
Step S2000: and sending the mark information carrying the mark characteristic value to the intermediate node at the reference time, wherein the mark characteristic value is used for indicating the reference time.
In this step, the source node sends the flag information carrying the flag feature value to the intermediate node at the reference time position, so that the intermediate node determines the position of the reference time through the received flag feature value in the flag information, and combines the target message carrying the time deviation information sent by the source node, and the time deviation information characterizes the deviation value of the sending time of the target message and the reference time, so that the time for sending the target message can be determined based on the determined position of the reference time and the time deviation information.
In an embodiment, the flag information comprises a flag code block for populating the flag feature value, the flag code block comprising one of: a first O code block; a first S code block and a first T code block.
The flag code block is a code block or a group of code blocks filled with flag characteristic values, and can be judged to be a flag code block representing a reference time position by identifying the flag characteristic values of the flag code blocks.
In an embodiment, in the application scenario of step S2000, the target message to be sent by the source node does not span the position of the reference time, as shown in fig. 4, and only the flag code block (i.e. the "flag block" shown in fig. 4) is sent to the intermediate node at the reference time, so as to ensure that the intermediate node receives the flag information. The Ethernet message is sent out through the physical port after being coded, and the delay time of the message cannot be determined because the message sending time is uncertain. When a physical port of a source node transmits a message, if the flag information associated with the message and the time deviation information carried in the message are transmitted simultaneously, as shown in fig. 5, the reference time appears in a periodic form (the period is T), and the relative position between the transmission time and the reference time of each client message can be used for determining the transmission position relationship of each client message, for example, in fig. 5, the message 1 is located between the flags T1 and T2 of the reference time, the message 2 is located between the flags T2 and T3 of the reference time, the message 3 and the message 4 are located between the flags T3 and T4 of the reference time, the message 5 and the message 6 are located between the flags T4 and T5 of the reference time, and the message 7 and the message 8 are located between the flags T5 and T6 of the reference time, and when the client message is transmitted in a transit in each device, the client message and the time reference are considered to always keep the same position corresponding relationship, so that the client message can keep stable delay time when in network transmission, and delay jitter is smaller than the period T, and service forwarding is realized. In one case, each message carries a message position deviation value α of the message from the time reference, which is used as a deviation value represented by the time deviation information, so that the message position deviation value of the message 1 is α1, the message position deviation value of the message 2 is α2, and so on, the message position deviation value of the message 8 is α8. After the time reference position is determined at the corresponding destination node of the message, the message can be sent at the corresponding determined time position according to the message position deviation value alpha carried by the received message, so that the message is sent at the expected time, the delay jitter of the message can be reduced to 0 theoretically, and the service deterministic transfer with smaller jitter is realized.
In one embodiment, when the flag code block includes a first O code block, the first O code block includes at least one of: a first field for filling the flag characteristic value, wherein when a target byte or bit group exists in the first field, the flag characteristic value or bit group is filled in the target byte, and the target byte or bit group is an unused or unused byte or bit combination; and the second field is used for filling the sign characteristic value, wherein when the value of the second field is not the first preset value, the second field fills the sign characteristic value. For example, in the IEEE802.3 standard, an O-code block is structured as shown in fig. 6, where the first 2 bits of the O-code block have a value of 10, the control word content of the byte1 position is 0x4b, and the byte2-4 position is 3 bytes of data: the first half byte (4 bits) content of D1, D2, D3, byte5 is a code block sequence value O0,4 bits may represent 16 different numerical contents, and it has been determined in the current standard that 0x0, 0x1, 0x2, 0x5, 0xF are used, that 0xC values are also being applied for use, that other values are not used, and that other values may be defined as flag characteristic values of a flag code block, such as an O code block using a value of 0x8 of an O0 sequence as a specific flag, and the O code block of the specific flag is used as a flag code block. In the IEEE802.3 standard, the last half byte of byte5 and byte6-8 bytes in the O code block are all set to be 0, and in application, the content of the last half byte of byte5 and byte6-8 bytes in the O code block may be set to other non-0 values, so as to be used as a specific flag, to represent that a specific O code block is used as a flag code block. It should be noted that, the specific first preset value, for example, "0" in the above example, is not limited herein, and may be selected and set according to the specific situation.
In an embodiment, as shown in fig. 7, when an S code block+t code block is used as the flag code block, the T code block may be, but is not limited to, a T0 type, or may be another type of T code block. Because the ethernet length is at least 48 bytes (generally more than 64 bytes), the ethernet packet after 64/66 encoding is composed of S code blocks, at least 6D code blocks and T code blocks, so the S code block+t code block does not meet the ethernet packet length requirement, but can be used as a specific flag code block for filling the flag characteristic value.
In an embodiment, when the sending time of the target message spans the reference time, the target message further carries header time information corresponding to the header, and the header time information and the time deviation information are used for determining the reference time by the intermediate node.
In an embodiment, the header time information characterizes a deviation value between a sending time of a header of the target message and a reference time, in this case, the source node sends the header time information by sending the target message at the same time, so that the intermediate node determines a corresponding reference time according to the header time information and the time deviation information, that is, if the client message is sent just crossing the reference time, that is, if the client message is being sent at the reference time position, a flag code block corresponding to the reference time is not sent, in this case, the client message header can be used as a temporary reference position, the deviation value between the sending time of the client message header and the reference time is carried in the client message header, and after the receiving end extracts the deviation value of the message header, the real position of the reference time can be calculated according to the deviation value carried by the client message and the determinable message header position. As shown in fig. 4, the time T3 is the reference time position, but the client message 2 is being sent, the time reference position offset value Δ1 is obtained according to the head position and the time reference position of the client message 2, the time reference position offset value Δ1 is carried at the head position of the client message and sent out, the real time reference position T3 can be calculated at the receiving end according to the head position and the time reference position offset value Δ1 of the message, so that the real time reference position T3 is pushed, the time reference position offset value Δ2 is carried by the message 4 at the time T4, the time reference position offset value Δ3 is carried by the message 5 at the time T5, and the time reference position offset value Δ4 is carried by the message 6 at the time T6. In this case, even if the transmission message crosses the reference time position, the message header may carry the deviation value of the message header position from the preset time reference position, thereby realizing that the reference time can be transferred even if the client message crosses the time reference position.
In one embodiment, the header time information includes one of:
time parameter information;
code block number information.
The time parameter information represents a time difference value between a message head position and a preset reference time position, for example, the time difference value between the message head position and a nearest reference time position can be represented; the code block number information represents the number of code blocks spaced between the head position of the message and a preset reference time position, for example, the number of code blocks spaced between the head position of the message and a nearest reference time position can be represented.
In an embodiment, the start code block of the target message includes a first message field for filling time parameter information or code block number information, where when the value of the first message field is not a second preset value, the first message field fills the time parameter information or the code block number information. After the Ethernet message is subjected to 64/66 coding, the message structure is composed of an S code block, a plurality of D code blocks and T code blocks, wherein the S code block is the first code block, the specific content of one S code block is shown in fig. 8, the first 2 bits in the S code block are synchronous header bits of 10, byte1 content control words, and the content of 0x 78; the content of byte2-byte8 is "0x55", and the content is the frame preamble byte content; byte8 content is "0xD5" and is frame delimiter byte content. The byte2-byte8 content in the S code block defined by the IEEE802.3 standard may be any data content, and the ethernet packet carries the preamble and the frame delimiter at 7 byte positions of the byte2-byte8, where the content is a fixed value. In application, the byte2-byte8 part of the byte position can also be used to carry other special information content, such as the specific flag content shown in fig. 9, and the byte6-byte7 is used to carry the time reference position deviation value, namely, the high deviation value and the low deviation value, respectively, in this case, if the byte6-byte7 content is not 0x55, the value is the time reference position deviation value. The maximum ethernet message length is 9600 bytes, which theoretically requires 1200D-code blocks (8 bytes in one D-code block) to carry. If the offset value is a code block number value representing the offset, then the content range of the byte6-byte7 is not greater than 1200, the maximum value of the offset value does not reach 21845 (i.e., hexadecimal 0x 5555), and if the content of the byte6-byte7 value is less than or equal to 1200, then the content represents that the byte6-byte7 is the time reference position offset value.
As shown in fig. 10, in an embodiment of the present application, the message transmission method may further include, but is not limited to, step S3000 and step S4000.
Step S3000: transmitting a feature code block filled with feature information to an intermediate node in a time period when no target message is transmitted;
step S4000: and in the time period of sending the target message, sending the target message filled with the characteristic information and the time deviation information to the intermediate node.
In this step, as shown in fig. 11, a feature code block (i.e. the "flag block" shown in fig. 11) or a target message carrying feature information (i.e. message 1, message 2, message 3, message 4, message 5, message 6, etc. shown in fig. 11) may be sent at all positions, so as to implement continuous transmission of time reference information, and further determine the position of the reference time through the change position of the time information, i.e. when no client message needs to be sent, then a specific feature code block is continuously sent, and specific feature information is carried in the feature code block; when the client message needs to be sent, specific characteristic information is carried in the code block of the client message only.
In an embodiment, the feature information includes a feature sequence number, the feature sequence number corresponding to the reference time; in the process of continuously sending the feature code block and the target message to the intermediate node, a preset statistical value is added to the value of the feature sequence number every time a reference time passes, that is, the values of the feature sequence numbers passing through different reference times are different, so that the number of reference times, such as T1, T2, T3 and the like, of the current reference time can be distinguished specifically through the values of the feature sequence numbers, and confusion cannot be generated; the preset statistic value can be selected according to the actual application scenario, and is not limited to 1, for example, the value of the feature serial number is not limited to addition, and can be calculated by subtracting, multiplying by the same multiple, dividing, and the like, which are all within the protection scope of the embodiment of the present application.
In one embodiment, the start code block of the target message includes a second message field for filling the characteristic sequence number; or the start code block of the target message comprises a second message field for filling the characteristic sequence number and a third message field for filling time deviation information; alternatively, the feature code block includes a second fault maintenance management code block for populating the feature sequence number and the time offset information; or the characteristic code block comprises a second starting code block and a second ending code block used for filling the characteristic serial number and the time deviation information; alternatively, the feature code blocks include a second end code block, a second start code block for filling in the feature sequence number and the time offset information. For example, assume that the specific information carried by the feature code block or the client message is a Sequence (SQ), and the sequence number is changed by adding 1 when passing through the time reference position, so that the reference position of the time reference can be obtained through the change of the sequence number value, and all client messages and feature code blocks with the same sequence number value belong to the messages and feature code blocks between the same front and back time reference positions. For the client message, the changed specific value may be transferred through a partial field in the S code block, as shown in fig. 12, and the changed characteristic value SQ is carried at the byte5 byte position of the S code block. Because the client message has a certain length, the accurate position of the time reference cannot be determined, besides the characteristic value SQ, the S code block can also carry the deviation value of the time reference, namely the high deviation value and the low deviation value, respectively, as shown in fig. 13, so that the time reference position can be accurately calculated. Similarly, the characteristic code block may also carry a characteristic value and a reference time position deviation value, as shown in fig. 14, when the O code block is used as the characteristic code block, the characteristic value and the reference time position deviation value may be carried, and when the S code block+t code block is used as the characteristic code block, the characteristic value and the reference time position deviation value may be carried on the S code block or the T code block.
In one embodiment of the present application, the method for transmitting a message may further include, but is not limited to, step S5000.
Step S5000: under the condition that the target message reaches the reference time, the sending of the target message is suspended until the marker information carrying the marker characteristic value is sent to the intermediate node at the reference time, wherein the marker characteristic value is used for indicating the reference time.
In this step, when the target message transmits the time deviation information across the reference time, the current transmission of the target message may be interrupted, but the flag information carrying the flag characteristic value is transmitted to the intermediate node at the reference time, and the target message is continuously transmitted after the flag information is transmitted, that is, by suspending the transmission of the target message at the reference time, so that the reference time may still be indicated by transmitting the flag information at the reference time in this case. For example, the IEEE802.3 standard provides a standard in which high priority messages interrupt low priority messages being sent. When a low-priority message is being sent and is not yet sent, if the high-priority message reaches the requirement of sending, the sending of the low-priority message is suspended, the sending of the high-priority message is inserted, and when the sending of the high-priority message is finished, the remaining low-priority messages are continuously sent. The implementation situation in this embodiment of the present application is shown in fig. 15, that is, if the reference time position arrives, and the client message has not yet been sent, the current client message sending is interrupted, a specific flag code block (i.e. the "flag block" shown in fig. 15) is inserted to send flag information, after the sending is completed, the time reference position is given, and then the remaining client messages are sent continuously. The definition format of the front and rear segments of messages under the condition that the client message is interrupted in transmission is already given in the IEEE802.3 standard, and the definition content of the encapsulation format of each segment can be referred to, which belongs to the technical content known to those skilled in the art and is not described in detail.
Fig. 16 is a flowchart of a message transmission method according to an embodiment of the present application. As shown in fig. 16, the message transmission method may be applied to, but not limited to, the intermediate node 200 in the network system shown in fig. 1, and may include, but not limited to, step S6000 and step S7000.
Step S6000: receiving a target message carrying time deviation information sent by a source node;
step S7000: and sending the target message to the destination node, so that the destination node determines the time for sending the target message to the user equipment according to the time deviation information.
In the step, the intermediate node receives the target message carrying time deviation information sent by the upstream source node, so that the time for sending the target message to the sink node is determined according to the time deviation information in the target message, the sink node further determines the time for sending the target message to the user equipment according to the time deviation information, the positioning of the sending position of the service message is realized, and the deterministic forwarding of the service message is ensured.
In an embodiment, the time deviation information characterizes a deviation value between a time of the source node sending the target message and a reference time, in one case, the reference time may be multiple and set periodically, the time deviation information may be characterized in form as a deviation value between a time of the source node sending the target message and any one of the reference times, and since the reference time is periodic, when determining a deviation value between a time of the source node sending the target message and one of the reference times, a deviation value between a time of the source node sending the target message and other reference times may be determined accordingly.
As shown in fig. 17, in one embodiment of the present application, when the reference time is plural, the plural reference times are periodically distributed, and step S7000 includes, but is not limited to, step S7100 and step S7200.
Step S7100: for any two adjacent reference times, generating a group of forwarding data message groups according to all target messages between the adjacent reference times;
step S7200: and in the same reference time, all target messages in a group of forwarding data message groups are sent to the destination node.
In the step, all the target messages between any two adjacent reference times are integrated into a group of forwarding data message groups for integral forwarding, namely, all the target messages in the forwarding data message groups are sent to the destination node in the same reference time, and the target messages keep the original sequence relation, so that the integrity of forwarding and transmitting of a plurality of target messages can be ensured, and the deterministic forwarding of service messages is ensured.
In one embodiment, for the intermediate device, after determining all time reference positions, according to the time reference positions and the distribution situation of the client messages in the time reference position sequence, all client messages between adjacent time references are used as a forwarding data message group, and all client messages between adjacent time references are used as a forwarding data message group to be forwarded as a whole. That is, when the receiving port is located between adjacent reference times, all messages of the data message group are forwarded in a unified manner, and when the receiving port is also located between the same adjacent reference times, all messages are forwarded out. When the intermediate device performs integral forwarding of the client message, the intermediate device also performs sequential forwarding, the integral message between the previous reference time and the integral message between the next reference time of the receiving end have a sequential relationship in the receiving time, the same sequential relationship is maintained at the transmitting end, the integral message between the previous reference time of the receiving end is transmitted at the transmitting end, then the integral message between the next reference time is transmitted at the transmitting end, and the same sequential relationship is maintained. For example, if the message between the receiving end T1 time reference and the receiving end T2 time reference is forwarded between the transmitting end T5 time reference and the transmitting end T6 time reference, and so on, the message between the receiving end T2 time reference and the receiving end T3 time reference is forwarded between the transmitting end T6 time reference and the transmitting end T7 time reference.
Fig. 18 is a flowchart of a message transmission method according to an embodiment of the present application. As shown in fig. 18, the message transmission method may be applied to, but not limited to, the sink node 300 in the network system shown in fig. 1, and may include, but not limited to, step S8000 and step S9000.
Step S8000: receiving a target message carrying time deviation information, which is sent by an intermediate node, wherein the target message is sent to the intermediate node in advance by a source node;
step S9000: and determining the time for sending the target message to the user equipment according to the time deviation information.
In the step, the sink node receives the target message carrying time deviation information and sent by the intermediate node, and the source node sends the target message to the intermediate node in advance, so that the sink node can determine the time of sending the target message to the user equipment according to the time deviation information, realize the positioning of the sending position of the service message, and ensure the deterministic forwarding of the service message.
In an embodiment, the time deviation information characterizes a deviation value between a time of the source node sending the target message and a reference time, in one case, the reference time may be multiple and set periodically, the time deviation information may be characterized in form as a deviation value between a time of the source node sending the target message and any one of the reference times, and since the reference time is periodic, when determining a deviation value between a time of the source node sending the target message and one of the reference times, a deviation value between a time of the source node sending the target message and other reference times may be determined accordingly.
As shown in fig. 19, step S9000 includes, but is not limited to, step S9100.
Step S9100: and determining the time for sending the target message to the user equipment according to the reference time and the time deviation information of the source node.
In the step, the time for transmitting the target message to the user equipment is determined according to the reference time and time deviation information of the source node, so that the positioning of the service message transmitting position can be realized, and the deterministic forwarding of the service message is ensured.
In one embodiment of the present application, when the reference time is plural, the plural reference times are periodically distributed, and step S9100 includes, but is not limited to, step S9110.
Step S9110: and determining the time for transmitting the target message to the user equipment according to the time deviation information and a reference time corresponding to the time preset for transmitting the target message by the source node.
In this step, since the forwarding of the message between different nodes is correspondingly transmitted, if the sink node further determines that the time of the source node for transmitting the target message is preset to a corresponding reference time on the basis of receiving the time deviation information, the time of transmitting the target message to the user equipment can be determined, positioning of the transmission position of the service message is achieved, and deterministic forwarding of the service message is ensured.
As shown in fig. 20, step S9100 includes, but is not limited to, step S9120 and step S9130 in an embodiment of the present application.
Step S9120: generating a current reference time according to the reference time of the source node;
step S9130: and determining the time for sending the target message to the user equipment according to the current reference time and the time deviation information.
In this step, on the basis of determining the reference time of the source node, the sink node may correspondingly generate the current reference time according to the reference time, and further determine the time of sending the target message to the user equipment according to the current reference time and the time deviation information.
In one embodiment of the present application, step S9120 includes, but is not limited to, one of:
when the current reference time is the same as the reference time of the source node in time sequence, generating the current reference time according to the reference time of the source node;
when the current reference time is different from the reference time of the source node in time sequence, generating the current reference time according to the frequency and the period correspondence of the reference time of the source node.
In this step, according to whether the current reference time is identical to the reference time of the source node in time sequence, the current reference time can be generated accordingly, which can meet the application requirements of various service message forwarding scenes, so as to facilitate the positioning of the service message sending position and ensure the deterministic forwarding of the service message. As shown in fig. 21, the "T" in fig. 21 characterizes the difference between adjacent reference times, and in one example, the receiving port of the intermediate node device (i.e., intermediate node) receives the time reference information sent by the upstream device, and the time reference position is determined by the upstream device. In the transmitting port of the present device, when transmitting the customer service, a time reference needs to be generated and transmitted, and the device has two reference time generating modes: mode 1, when the time reference of the transmitting port and the time reference received by the receiving port are completely identical in time, and the time reference position received by the receiving port appears, the transmitting port also transmits the time reference position, and the transmitting port generates the transmitting port time reference position according to the time reference position from the upstream receiving port; in the method 2, the time reference of the transmitting port and the time reference position received by the receiving port are not related, that is, no alignment is required, and the transmitting port alone generates the time reference position, that is, the frequency of occurrence of the time reference of the transmitting port and the frequency of occurrence of the time reference position of the receiving port are identical, the frequency of occurrence of the time reference is identical, and the time reference period is identical, which corresponds to the introduction of the "time reference unit" shown in fig. 21. In the scenario of mode 2, the implementation configuration requires that the clock frequencies of all devices are identical, the clock signals between the upstream device and the downstream device are locked, and in the case that the clock frequencies are identical, the transmitting ports of each device generate the time reference positions of the respective devices according to the same period.
As shown in fig. 22, one embodiment of the present application further includes, but is not limited to, step S9200 after step S9100.
Step S9200: and when the time for transmitting the target message to the user equipment is at the preset time, transmitting the target message to the user equipment.
In the step, after the sink node determines the time for transmitting the target message to the user equipment according to the time reference and the current reference time, the target message is forwarded and output to the user equipment at the determined transmission time, so that the forwarding time of the target message is consistent with the time of transmitting the target message by the source node, thereby realizing the deterministic transmission of the target message.
In one embodiment, a process for implementing deterministic service delay forwarding is as follows: when a client message is sent to a source device (e.g., device 1 shown in fig. 23) in the network, a code block indicating time reference information is sent at the same time, and a message position deviation value (i.e., time deviation information) of the client message from a previous time reference is carried in the client message, where "T1", "T2", "T3" in fig. 23 respectively represent different reference times, and "T" represents a difference between adjacent reference times. The message position deviation value can be carried on a two-layer VLAN position or a three-layer IP layer package of the service message, the position deviation value of the service message shown in fig. 24 is arranged at an expansion position of a three-layer IP label (namely an expansion head shown in fig. 24), and can also be arranged on various labels such as a pseudo wire label, a tunnel label and the like, the message position deviation value gives a deviation position value of a time reference when the service message of a source node is specifically sent, the message position deviation value is not perceived in a middle device (a device 2 shown in fig. 23) of a network, and is directly transmitted in a transparent way, and is always remained in the message content and transmitted to a final sink point device (a device 3 shown in fig. 23) in the network.
In an embodiment, when forwarding a service message, a sink node and an intermediate node are different, the sink node extracts time deviation information carried in the service message, determines a specific sending time of the message according to the reference time and the time deviation information, and forwards and outputs the determined sending time to realize deterministic transmission of the service message.
Fig. 25 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 25, the communication device includes a memory 1100, a processor 1200. The number of the memories 1100 and the processors 1200 may be one or more, and one memory 1100 and one processor 1200 are taken as an example in fig. 25; the memory 1100 and the processor 1200 in the device may be connected by a bus or otherwise, for example in fig. 25.
The memory 1100 is used as a computer readable storage medium for storing a software program, a computer executable program, and modules, such as program instructions/modules corresponding to the message transmission method provided in any of the embodiments of the present application. The processor 1200 implements the above-described message transmission method by running software programs, instructions, and modules stored in the memory 1100.
The memory 1100 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions. In addition, memory 1100 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 1100 may further include memory located remotely from processor 1200, which may be connected to the device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
An embodiment of the present application further provides a computer readable storage medium storing computer executable instructions for performing a method for transmitting a message as provided in any embodiment of the present application.
An embodiment of the present application further provides a computer program product, including a computer program or computer instructions, where the computer program or computer instructions are stored in a computer readable storage medium, and a processor of the computer device reads the computer program or the computer instructions from the computer readable storage medium, and the processor executes the computer program or the computer instructions, so that the computer device performs a method for transmitting a message as provided in any embodiment of the present application.
The system architecture and the application scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of a new application scenario, the technical solution provided by the embodiments of the present application is equally applicable to similar technical problems.
Those of ordinary skill in the art will appreciate that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof.
In a hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed cooperatively by several physical components. 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.
As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process or thread of execution and a component may be localized on one computer or distributed between 2 or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, or across a network such as the internet with other systems by way of the signal).
Claims (28)
1. A message transmission method comprises the following steps:
and sending a target message carrying time deviation information to an intermediate node, so that the intermediate node determines the time of sending the target message by the intermediate node according to the time deviation information.
2. The message transmission method according to claim 1, wherein the time deviation information characterizes a deviation value between a transmission time of the target message and a reference time.
3. The message transmission method according to claim 2, wherein the time at which the intermediate node transmits the target message is determined by the reference time and the time deviation information.
4. The message transmission method according to claim 3, wherein the reference time is a plurality of, the reference times are periodically distributed, and the time for the intermediate node to transmit the target message is determined by the time deviation information and one of the reference times corresponding to the transmission time preset for the target message.
5. The method for transmitting a message according to claim 3, further comprising:
and sending sign information carrying a sign characteristic value to the intermediate node at the reference time, wherein the sign characteristic value is used for indicating the reference time.
6. The message transmission method according to claim 5, wherein the flag information includes a flag code block for filling the flag characteristic value, the flag code block including one of:
A first fault maintenance management code block;
a first start code block and a first end code block.
7. The message transmission method according to claim 6, wherein when the flag code block includes the first failure maintenance management code block, the first failure maintenance management code block includes at least one of:
a first field for filling the flag characteristic value, wherein when a target byte or bit group exists in the first field, the flag characteristic value or the bit group is filled in the target byte, and the target byte or the bit group is unused or unused bytes or bit combinations which are not applied for use;
and the second field is used for filling the sign characteristic value, wherein when the value of the second field is not a first preset value, the second field is used for filling the sign characteristic value.
8. The message transmission method according to claim 3, wherein, in a case where the transmission time of the target message spans the reference time, the target message further carries header time information corresponding to a header, and the header time information and the time deviation information are used for the intermediate node to determine the reference time.
9. The message transmission method according to claim 8, wherein the header time information characterizes a deviation value of the transmission time of the header of the target message from the reference time.
10. The message transmission method according to claim 8, wherein the header time information includes one of:
time parameter information;
code block number information.
11. The method according to claim 10, wherein the start code block of the target message includes a first message field for filling the time parameter information or the code block number information, and wherein the first message field fills the time parameter information or the code block number information when the value of the first message field is not a second preset value.
12. The method for transmitting a message according to claim 4, further comprising:
transmitting a feature code block filled with feature information to the intermediate node in a time period when no target message is transmitted;
and in the time period of sending the target message, sending the target message filled with the characteristic information and the time deviation information to the intermediate node.
13. The message transmission method according to claim 12, wherein the characteristic information includes a characteristic sequence number, the characteristic sequence number corresponding to the reference time; and in the process of continuously sending the feature code block and the target message to the intermediate node, adding a preset statistical value to the value of the feature sequence number every time when one reference time passes.
14. The message transmission method as claimed in claim 13, wherein:
the start code block of the target message comprises a second message field for filling the characteristic sequence number;
or,
the start code block of the target message comprises a second message field for filling the characteristic sequence number and a third message field for filling the time deviation information;
or,
the feature code block comprises a second fault maintenance management code block for filling the feature sequence number and the time deviation information;
or,
the characteristic code blocks comprise a second starting code block and a second ending code block used for filling the characteristic serial number and the time deviation information;
or,
the feature code blocks include a second end code block, a second start code block for filling the feature sequence number and the time offset information.
15. The method for transmitting a message according to claim 8, further comprising:
and under the condition that the target message reaches the reference time, suspending sending the target message until the target message sends the mark information carrying the mark characteristic value to the intermediate node at the reference time, wherein the mark characteristic value is used for indicating the reference time.
16. A message transmission method comprises the following steps:
receiving a target message carrying time deviation information sent by a source node;
and sending the target message to a sink node, so that the sink node determines the time for sending the target message to the user equipment according to the time deviation information.
17. The method according to claim 16, wherein the time offset information characterizes an offset value between a time when the source node transmits the target message and a reference time.
18. The method for transmitting a message according to claim 17, wherein when the reference time is plural, the plural reference times are periodically distributed, the sending the target message to the sink node includes:
for any two adjacent reference times, generating a group of forwarding data message groups according to all the target messages between the adjacent reference times;
And in the same reference time, sending all the target messages in the group of forwarding data messages to a sink node.
19. A message transmission method comprises the following steps:
receiving a target message carrying time deviation information, which is sent by an intermediate node, wherein the target message is sent to the intermediate node in advance by a source node;
and determining the time for transmitting the target message to the user equipment according to the time deviation information.
20. The method according to claim 19, wherein the time offset information characterizes an offset value between a time when the source node transmits the target message and a reference time.
21. The method for transmitting a message according to claim 19, wherein determining the time for transmitting the target message to the ue according to the time offset information comprises:
and determining the time for transmitting the target message to the user equipment according to the reference time of the source node and the time deviation information.
22. The method for transmitting a message according to claim 21, wherein when the reference time is plural, the plural reference times are distributed periodically, and determining the time for transmitting the target message to the ue according to the reference time of the source node and the time offset information includes:
And determining the time for transmitting the target message to the user equipment according to the time deviation information and one reference time corresponding to the time preset for transmitting the target message by the source node.
23. The method according to claim 21, wherein determining the time for transmitting the target message to the ue according to the reference time of the source node and the time offset information includes:
generating a current reference time according to the reference time of the source node;
and determining the time for transmitting the target message to the user equipment according to the current reference time and the time deviation information.
24. The method for transmitting a message according to claim 23, wherein the generating the current reference time according to the reference time of the source node includes one of:
when the current reference time is the same as the reference time of the source node in time sequence, generating the current reference time according to the reference time of the source node;
when the current reference time is different from the reference time of the source node in time sequence correspondence, the current reference time is generated according to the frequency and the period correspondence of the reference time of the source node.
25. The method for transmitting a message according to claim 22, wherein after determining the time for transmitting the target message to the ue according to the reference time of the source node and the time offset information, the method further comprises:
and when the time for transmitting the target message to the user equipment is in the preset time, transmitting the target message to the user equipment.
26. A communication device, comprising:
at least one processor;
at least one memory for storing at least one program;
a method of message transmission according to any one of claims 1 to 25, when at least one of said programs is executed by at least one of said processors.
27. A computer readable storage medium, in which a processor executable program is stored, which when executed by a processor is adapted to carry out the message transmission method according to any one of claims 1 to 25.
28. A computer program product comprising a computer program or computer instructions, characterized in that the computer program or the computer instructions are stored in a computer readable storage medium, from which the computer program or the computer instructions are read by a processor of a computer device, the processor executing the computer program or the computer instructions, causing the computer device to perform the message transmission method according to any one of claims 1 to 25.
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| CN202211191278.2A CN117834390A (en) | 2022-09-28 | 2022-09-28 | Message transmission method, communication device, storage medium, and program product |
| PCT/CN2023/121101 WO2024067482A1 (en) | 2022-09-28 | 2023-09-25 | Packet transmission method, communication device, storage medium, and program product |
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| CN202211191278.2A CN117834390A (en) | 2022-09-28 | 2022-09-28 | Message transmission method, communication device, storage medium, and program product |
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| CN102571559B (en) * | 2011-12-12 | 2014-07-30 | 北京交控科技有限公司 | Time-triggered network message transmission method |
| CN110868363B (en) * | 2018-08-27 | 2021-11-19 | 华为技术有限公司 | Method and network device for periodic mapping |
| CN113132173A (en) * | 2019-12-31 | 2021-07-16 | 华为技术有限公司 | Time delay determination method and device and network transmission system |
| CN114640634A (en) * | 2020-11-30 | 2022-06-17 | 华为技术有限公司 | Communication method and related equipment |
| CN114915364A (en) * | 2021-02-10 | 2022-08-16 | 华为技术有限公司 | Message processing method, system and related device |
| CN115378532A (en) * | 2021-05-17 | 2022-11-22 | 华为技术有限公司 | Message transmission method and device |
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