CN108063653B

CN108063653B - Time delay control method, device and system

Info

Publication number: CN108063653B
Application number: CN201610980824.9A
Authority: CN
Inventors: 叶进洲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-11-08
Filing date: 2016-11-08
Publication date: 2020-02-14
Anticipated expiration: 2036-11-08
Also published as: WO2018086412A1; CN108063653A

Abstract

The embodiment of the invention provides a time delay control method, a time delay control device and a time delay control system, relates to the technical field of communication, and can improve the control precision of time delay in the message transmission process. The method comprises the following steps: the control equipment determines the service type of a target message, and the target message needs to sequentially pass through N transmission networks from a sending end to a receiving end; the control equipment allocates a time delay index in each transmission network for the target message according to the service type; the control equipment respectively sends a delay evaluation command to the N transmission controllers, the delay evaluation command received by the first transmission controller carries a delay index of the first transmission network, and the delay evaluation command is used for indicating the first transmission controller to determine whether the delay of transmitting a target message in the first transmission network meets the delay index of the first transmission network; and if the time delay of the target message transmitted in each transmission network meets the time delay index of the transmission network, the control equipment respectively sends message transmission commands to the N transmission controllers.

Description

Time delay control method, device and system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for controlling a time delay.

Background

Latency refers to the time it takes for a message (or packet) to travel from a transmitting end to a receiving end of a network. For a common message sent by a sending end, the common message may need to be transmitted to a receiving end through different transmission networks such as a Radio Access Network (RAN), an EPC (Evolved Packet Core, 4G Core Network), an SDN (Software Defined Network), and the like, so that the sum of time for transmitting the message in each experienced transmission Network may be approximately used as a time delay of the message.

When different services are executed, corresponding delay indexes are assigned to the different services, where the delay indexes are used to indicate requirements for a duration taken to transmit a packet when the service is executed, for example, when the delay index of service 1 is 10ms, it indicates that the duration taken to transmit the packet when service 1 is executed should be within 10 ms.

And the transmission devices, such as routers, in each transmission network transmit data based on Best-Effort Service (Best-Effort Service) mechanism in QoS (Quality of Service) model. Under the best effort service mechanism, each router serves as an independent transmission device and can receive messages sent by other routers, and then, when a certain router (for example, the router 1) receives a large number of messages, the router 1 stores the messages in a cache queue in a certain sequence for processing one by one, that is, the time for processing a specified message by the router 1 is uncontrollable, so that the time delay spent by the message transmitted from a sending end to a receiving end is also uncontrollable, which causes a problem that a service cannot meet a delay index assigned to the service in an actual execution process.

Disclosure of Invention

Embodiments of the present invention provide a method, an apparatus, and a system for controlling a time delay, which can improve the control precision of the time delay in a message transmission process, thereby reducing a situation that the time delay for transmitting a message does not meet a time delay index.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, an embodiment of the present invention provides a method for controlling a delay, including: the control equipment determines the service type of a target message, wherein the target message needs to sequentially pass through N (N is more than or equal to 1) transmission networks from a sending end to reach a receiving end; then, the control device assigns a delay index of each transmission network in the N transmission networks to the target message according to the service type; furthermore, the control device sends a delay evaluation command to N transmission controllers (each transmission network is provided with one transmission controller), for example, a first transmission controller in a first transmission network, where the delay evaluation command received by the first transmission controller carries a delay index of the first transmission network, and the delay evaluation command is used to instruct the first transmission controller to determine whether a delay of transmitting the target packet in the first transmission network meets the delay index of the first transmission network; if the time delay of transmitting the target message in each transmission network meets the time delay index of the transmission network, the control equipment respectively sends message transmission commands to the N transmission controllers, and triggers the transmission controllers receiving the message transmission commands to complete the transmission process of the target message according to the time delay index assigned to the transmission network. That is to say, in the delay control method provided in the embodiment of the present invention, after the control device assigns the delay index of the target packet transmitted in each transmission network each time, may interact with the transport controllers within each transport network by way of a "negotiation", thereby determining whether each transmission network can satisfy the assigned delay index, such that, when each transmission network satisfies the assigned delay index, the control device determines the delay index as a final delay index, and, subsequently, in each transmission network, the target message can be transmitted according to the delay index which is respectively 'negotiated', so that the total delay of the target message transmitted in the N transmission networks does not exceed the sum of the delay indexes of the N transmission networks, therefore, the control precision of the time delay in the message transmission process is improved, and the situation that the time delay of the actual transmission message does not meet the time delay index is reduced.

In a possible design, the allocating, by the control device, a delay indicator of each of the N transmission networks to the target packet according to the service type includes: A. for a first transmission network in the N transmission networks, the control equipment determines M processing processes required by the transmission equipment to transmit the target message in the first transmission network according to the service type, wherein M is more than or equal to 1; B. the control equipment determines the segment delay index of each processing process in the M processing processes, and the delay index of the first transmission network is the sum of the segment delay indexes of each processing process; wherein the delay evaluation command received by the first transmission controller comprises: the identifiers of the M processing processes and the segment delay index of each processing process; and the control equipment circularly executes the steps A and B until the time delay index of each transmission network in the N transmission networks is obtained. Therefore, the control device can filter out a part of unnecessary processing processes when the target message is transmitted according to the service type of the target message, so that the time delay of transmitting the target message is reduced, and the time delay distribution condition of the target message in the transmission link of each transmission network can be finely controlled by taking the segment time delay index of each processing process as the granularity.

In one possible design, after the control device sends the delay evaluation command to each of the N transmission controllers, the method further includes: and if the time delay of transmitting the target message in the first transmission network is greater than the time delay index of the first transmission network, the control equipment corrects the time delay index of the first transmission network.

In one possible design, after the control device sends the delay evaluation command to each of the N transmission controllers, the method further includes: the control equipment receives an evaluation response sent by each transmission controller, wherein the evaluation response comprises the time delay required for transmitting the target message in each transmission network; wherein, the control device corrects the delay index of the first transmission network, and the method comprises the following steps: if the delay required for transmitting the target message in the second transmission network is less than the delay index of the second transmission network, the control device assigns the remaining delay index of the second transmission network to the first transmission network on the basis of the delay index of the first transmission network, and the second transmission network is any one of the N transmission networks except the first transmission network.

In a possible design, after assigning the remaining delay metrics of the second transmission network to the first transmission network based on the delay metrics of the first transmission network, the method further includes: if the delay of transmitting the target message in the first transmission network still does not meet the delay index of the first transmission network, the control device sends a transmission device replacement command to the first transmission controller, wherein the transmission device replacement command is used for instructing the first transmission controller to reselect the transmission device meeting the delay index of the first transmission network to transmit the target message.

In one possible design, after the control device receives the evaluation response sent by each transmission controller, the method further includes: if the time delay required for transmitting the target message in the first transmission network is greater than the time delay index of the first transmission network, and the difference value between the time delay required for transmitting the target message in the first transmission network and the time delay index of the first transmission network is greater than a preset threshold value, the control device sends a transmission device replacement command to the first transmission controller, wherein the transmission device replacement command is used for instructing the first transmission controller to reselect the transmission device meeting the time delay index of the first transmission network to transmit the target message.

In one possible design, after the control device sends the delay evaluation command to each of the N transmission controllers, the method further includes: if the time delay required for transmitting the target message in the first transmission network is greater than the time delay index of the first transmission network, the control device sends a transmission device replacement command to the first transmission controller, wherein the transmission device replacement command is used for instructing the first transmission controller to reselect the transmission device meeting the time delay index of the first transmission network to transmit the target message.

In one possible embodiment, the method further comprises: the control device determines a first service processing scheme for the sending end to send the target message and a second service processing scheme for the receiving end to receive the target message, wherein the first service processing scheme and the second service processing scheme are both processing schemes above a connection layer in an OSI reference model; the control device performs combined arrangement on the first service processing scheme and the second service processing scheme to obtain a combined service processing scheme, wherein the execution sequence of the first service processing scheme in the combined service processing scheme is before that of the second service processing scheme; the control device sends the joint service processing scheme to the receiving end, and after the receiving end receives the target message, the receiving end executes the joint service processing scheme. That is, the sending end does not need to execute the first service processing scheme on the target message, that is, the sending end does not need to execute the processing scheme above the connection layer in the OSI reference model, thereby avoiding the process of data transfer between the CPUs and the ethernet by CPU interruption at the sending end, and after the receiving end receives the target message, the receiving end uniformly executes the combined service processing scheme, that is, the receiving end completes the processing scheme above the connection layer in the OSI reference model and the processing scheme above the connection layer in the OSI reference model at one time by CPU interruption, thereby reducing the delay consumption caused by frequent interrupt processing of the message service through the CPU from the ethernet to the CPU.

In a second aspect, embodiments of the present invention provide a control device having functionality to implement the control device behavior in the practice of the above-described method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In a third aspect, an embodiment of the present invention provides a control apparatus including: a processor, a memory, a bus, and a communication interface; the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, and when the control device runs, the processor executes the computer execution instructions stored in the memory, so that the control device executes the time delay control method according to any one of the first aspect.

In a fourth aspect, an embodiment of the present invention provides a delay control system, where the system includes any one of the foregoing control devices, and N transmission controllers connected to the control devices, where each transmission controller is configured to manage a transmission device in a transmission network where the transmission controller is located, and N is greater than or equal to 1.

In a fifth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the control device, which includes a program designed for the control device to execute the above aspect.

In a sixth aspect, an embodiment of the present invention provides a computer program, where the computer program includes instructions, and when the computer program is executed by a computer, the computer may execute the flow in the latency control method in any one of the first aspect.

In addition, for technical effects brought by any one of the design manners of the second aspect to the sixth aspect, reference may be made to technical effects brought by different design manners of the first aspect, and details are not described here.

These and other aspects of the invention are apparent from and will be elucidated with reference to the embodiments described hereinafter.

Drawings

Fig. 1 is a schematic diagram of a delay control system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a computer device according to an embodiment of the present invention;

fig. 3 is an interaction diagram of a delay control method according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a process of processing packets of different service types in an SDN transmission network;

fig. 5 is a schematic diagram illustrating a service processing flow of a message based on an OSI reference model by a transmitting end and a receiving end in the prior art;

fig. 6 is a schematic flowchart of a delay control method according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a service processing flow of a message based on an OSI reference model by a sending end and a receiving end according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a control device according to an embodiment of the present invention.

Detailed Description

Technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

In addition, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

An embodiment of the present invention provides a delay control method, which can be applied to the delay control system 100 shown in fig. 1. The delay control system 100 may include N (N is greater than or equal to 1) transmission networks (e.g., a radio access network, a 4G core network, etc.), where the N transmission networks may be transmission networks through which any one message passes from a sending end to a receiving end in sequence, and each transmission network is provided with a transmission controller 11 and a plurality of transmission devices 12 managed by the transmission controller 11. Taking the SDN transmission network as an example, an SDN controller and each router or switch managed by the SDN controller are arranged in the SDN transmission network, and the SDN controller may control the routers or switches to transmit a packet (i.e., a target packet) according to a certain path, that is: in an SDN transmission network, the transmission controller 11 is an SDN controller; the above-mentioned transmission device 12 is a router or a switch).

As shown in fig. 1, the delay control system 100 according to the embodiment of the present invention is further provided with a control device 13, where the control device 13 is respectively connected to the transmission controllers 11 in each transmission network, that is, N transmission controllers 11, and the control device 13 may respectively interact with the N transmission controllers 11, so as to formulate a delay index for transmitting a target packet in each transmission network.

Specifically, based on the delay control system 100 shown in fig. 1, when a sending end needs to transmit a target packet to a receiving end, the control device 13 determines a service type of the target packet, and then assigns a delay index in each transmission network for the target packet according to the service type. For example, the first transport network (the first transport network is any one of the above N transport networks) is assigned a delay index of 10ms, that is, the transmission device 12 in the first transport network is required to transmit the target packet for a time period not exceeding 10 ms.

At this time, the control device sends a delay evaluation command to the transmission controller 11 in each transmission network, and each delay evaluation command carries a delay index assigned to the transmission network. Still taking the first transmission network as an example, after receiving the delay evaluation command, the first transmission controller 11 in the first transmission network may interact with the transmission device 12 in the first transmission network, so as to determine whether the delay of transmitting the target packet in the first transmission network satisfies the delay index of the first transmission network, and if so, the first transmission controller 11 sends an evaluation response satisfying the delay index to the control device 13.

Then, if the control device 13 receives the evaluation response sent by each transmission controller 11 and satisfying the delay index, it indicates that the delay for transmitting the target packet in each transmission network satisfies the delay index of the transmission network, at this time, the control device 13 may send a packet transmission command to the transmission controller 11 in each transmission network, and trigger the transmission controller 11 receiving the packet transmission command to complete the transmission process of the target packet according to the delay index assigned to the transmission network in which the transmission controller is located.

Of course, if the first transmission controller 11 determines that: the delay of transmitting the target packet in the first transmission network does not satisfy the delay index of the first transmission network, or an evaluation response that does not satisfy the delay index may be sent to the control device 13, at this time, the control device 13 may reassign a new delay index (which will be described in detail in the following embodiments) to the first transmission network according to the delay of transmitting the target packet in other transmission networks until the delay of transmitting the target packet in each transmission network satisfies the delay index of the transmission network.

That is to say, in the delay control method provided in the embodiment of the present invention, different from the conventional method of transmitting a packet using a best effort service mechanism, after assigning a delay index for transmitting a target packet in each transmission network each time, the control device 13 may interact with the transmission controller 11 in each transmission network in a "negotiation" manner, so as to determine whether each transmission network can satisfy the assigned delay index, in this way, when each transmission network satisfies the assigned delay index, the control device 13 determines the delay index as a final delay index, and subsequently, in each transmission network, the target packet may be transmitted according to the respective "negotiated" delay index, so that the total delay of the target packet transmitted in the N transmission networks does not exceed the sum of the delay indexes of the N transmission networks, therefore, the control precision of the time delay in the message transmission process is improved, and the situation that the time delay of the actual transmission message does not meet the time delay index is reduced.

It can be understood that the sending end and the receiving end related in the delay control system 100 may specifically be a mobile phone, a tablet Computer, a notebook Computer, a UMPC (Ultra-mobile Personal Computer), a netbook, a PDA (Personal Digital Assistant), and other terminal devices, and in fig. 1, only the mobile phone is taken as the sending end and the PC (Personal Computer) is taken as the receiving end for example, which is not limited in this embodiment of the present invention.

It should be noted that, in the example of the present invention, any one of the functional nodes or network elements involved in the delay control system 100, for example, the transmission controller 11, the transmission device 12, and the control device 13, may be implemented by one physical device, or may be implemented by multiple physical devices together, and multiple functional nodes in the delay control system 100 may be implemented by different physical devices, or may be implemented by the same physical device. It is understood that any functional node in the delay control system 100 may be a logical functional module in a physical device, or may be a logical functional module composed of a plurality of physical devices.

In addition, in the embodiment of the present invention, the delay control system 100 may be applied to a future fifth Generation mobile communication (english: 5rd-Generation, abbreviated as 5G) system, a Long Term Evolution (LTE) communication system, an LTE evolved communication system, such as an LTE-a (long term evolution advanced) system, and a third Generation mobile communication (3 rd-Generation, abbreviated as 3G) system, such as WCDMA, and the like, and the present invention is not limited thereto.

As shown in fig. 2, the transmission controller 11, the transmission device 12, or the control device 13 in fig. 1 may be implemented in the form of a computer device (or system) in fig. 2.

Fig. 2 is a schematic diagram of a computer device according to an embodiment of the present invention. The computer device 200 comprises at least one processor 21, a communication bus 22, a memory 23 and at least one communication interface 24.

The processor 21 may be a general purpose Central Processing Unit (CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the teachings of the present invention.

Communication bus 22 may include a path that transfers information between the aforementioned components. The communication interface 24 may be any device, such as a transceiver, for communicating with other devices or communication Networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

The Memory 23 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.

Wherein, the memory 23 is used for storing application program codes for executing the scheme of the invention, and is controlled by the processor 21 to execute. The processor 21 is configured to execute application program code stored in the memory 23.

In particular implementations, processor 21 may include one or more CPUs such as CPU0 and CPU1 in fig. 2, for example, as one embodiment.

In particular implementations, computer device 200 may include multiple processors, such as processor 21 and processor 28 in FIG. 2, as one embodiment. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In particular implementations, computer device 200 may also include an output device 25 and an input device 26, as one embodiment. An output device 25 is in communication with the processor 21 and may display information in a variety of ways. For example, the output device 25 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 26 is in communication with the processor 21 and can accept user input in a variety of ways. For example, the input device 26 may be a mouse, a keyboard, a touch screen device or a sensing device, and the like.

The computer device 200 described above may be a general purpose computer device or a special purpose computer device. In a specific implementation, the computer device 200 may be a desktop computer, a laptop computer, a web server, a Personal Digital Assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device, an embedded device, or a device with a similar structure as in fig. 2. Embodiments of the present invention are not limited by the type of computer device 200.

In the following embodiments of the present invention, in order to more clearly describe the delay control method provided by the present invention, a logic function module is used as an execution main body in the following description, and it can be understood by those skilled in the art that the logic function module needs to depend on hardware resources on an entity device where the logic function module is located when being specifically implemented.

As follows, based on the delay control system 100 shown in fig. 1, an embodiment of the present invention provides a delay control method, as shown in fig. 3, the method includes:

101. the control equipment determines the service type of the target message.

The target message is required to sequentially pass through N (N is more than or equal to 1) transmission networks from the sending end to reach the receiving end. For example, the target message starts from the sending end and needs to reach the receiving end through the RAN transport network of the sending end, the EPC transport network and the RAN transport network of the receiving end.

For example, the control device may use an existing means for identifying a packet service type, for example, obtain a VPN (Virtual Private Network) identifier of a target packet through DPI (deep packet Inspection), or determine a service type of the target packet according to a type of a configuration template of a Virtual machine when the Virtual machine is created for the target packet.

For example, the service type of the target packet may specifically include an IP packet or a non-IP packet, and for example, the service type of the target packet may specifically include a video service packet, a voice service packet, and the like, which is not limited in this embodiment of the present invention.

102. And the control equipment allocates the delay index of each transmission network in the N transmission networks for the target message according to the service type.

In a possible implementation manner, the control device may store a corresponding relationship between each service type and the delay indicators of the N transmission networks, for example, as shown in table 1, a corresponding relationship between the service type 1 and the delay indicators of the respective transmission networks, and a corresponding relationship between the service type 2 and the delay indicators of the respective transmission networks. Then, when the service type of the target packet is determined to be service type 1, the delay index of the target packet in each transmission network of the N transmission networks may be determined according to the corresponding relationship shown in table 1.

TABLE 1

	Transmission network 1	Transmission network 2	……	Transmission network N
					Service type
1	10ms	8ms-20ms	……	20ms(±3ms)
					Service type 2	8ms	12ms-18ms	……	20ms(±2ms)

The delay index of any transmission network may be represented by a specific numerical value, for example, in table 1, the delay index of a packet of the transmission service type 1 in the transmission network 1 is 10 ms; or, the delay index of the transmission network may also be represented by an interval range, for example, in table 1, the delay index of the packet of the transmission service type 1 in the transmission network 2 is within 8ms to 20ms, and at this time, the control device may select a value as the delay index within the interval range of 8ms to 20 ms; or, the delay index of the transmission network may also be represented by a specific value and an error range thereof, for example, in table 1, the delay index of the packet of the transmission service type 1 in the transmission network N is 20ms, and a value error thereof is within ± 3ms, so that the control device may select a value in an interval range of 17ms to 23ms as the delay index.

Further, when the delay index of the transmission network is an interval range, the interval range may be determined according to historical delay values spent by the service type packet in transmission in different transmission networks before the current packet transmission process. For example, in the last day, the minimum historical delay value of the message of the service type 1 which is transmitted in the transmission network 2 is 8ms, and the maximum historical delay value is 20ms, so that the delay index of the message of the service type 1 which is transmitted in the transmission network 2 can be determined to be in the interval range of 8ms-20 ms.

In another possible implementation manner, at least one processing procedure that needs to be executed when each service type is transmitted in different transmission networks may also be stored in the control device. Illustratively, as shown in table 2, at least one processing procedure that needs to be performed when the message of the service type 1 is transmitted in each transmission network is included, and at least one processing procedure that needs to be performed when the message of the service type 2 is transmitted in each transmission network is included.

TABLE 2

	Transmission network 1	Transmission network 2	……	Transmission network N
					Service type
1	3 treatment processes	2 treatment processes	……	6 treatment processes
					Service type 2	3 treatment processes	4 treatment processes	……	3 treatment processes

Then, when assigning the delay index of each transmission network to the target packet, taking the first transmission network (the first transmission network is one of N transmission networks) as an example, the control device may first determine, according to the service type of the target packet, M processing procedures that need to be executed by the transmission device to transmit the target packet in the first transmission network, where M is greater than or equal to 1; further, determining the segment delay indexes of each processing process in the M processing processes, wherein the sum of the segment delay indexes of the M processing processes is the delay index of the first transmission network; similarly, the delay indicators of each of the N transport networks may be determined by performing the above method in a loop.

Taking the SDN transmission Network as an example, when a transmission device in the SDN transmission Network transmits a message, it may execute 10 processing procedures such as ACL (Access Control List), egress backpressure, queue buffer, CAR (Committed Access rate) configuration, congestion queue configuration, redirection, discard policy configuration, broadcast or multicast processing, repackaging, and NAT (Network Address Translation), and traverse, and the time (i.e. the fragmentation delay indicator) spent in executing each processing procedure is generally fixed, however, the processing procedure that each service type message needs to execute is generally a subset of the 10 processing procedures, as shown in fig. 4, for the service type 1 message, at least the ACL, egress backpressure, repackaging, and traverse the 4 processing procedures need to execute, and the transmission procedure of the SDN transmission Network to the message can be completed, then, the time delay index is the sum of the segment time delay indexes of the 4 processing procedures, i.e. T0+ T1+ T8+ T9; for the message of service type 2, at least the 2 processing procedures of ACL and NAT traversal need to be executed, so that the transmission process of the SDN transmission network on the message can be completed, and the time delay index is the sum of the segment time delay indexes of the 2 processing procedures, i.e., T0+ T9.

Therefore, the control device can filter out a part of unnecessary processing processes when the target message is transmitted according to the service type of the target message, so that the time delay of transmitting the target message is reduced, and the time delay distribution condition of the target message in the transmission link of each transmission network can be finely controlled by taking the segment time delay index of each processing process as the granularity.

It should be noted that, the above is only exemplified by 10 processing procedures in the SDN transmission network, and it can be understood that, although the processing procedures executed by the transmission devices in different transmission networks are different, the above method can be applied to determine, according to the service type of the target packet, M processing procedures that need to be executed by the transmission devices in each transmission network to transmit the target packet.

103a, the control device sends a delay evaluation command to the first transmission controller, where the delay evaluation command carries a delay index of the first transmission network.

103b, the control device sends a delay evaluation command to the second transmission controller, wherein the delay evaluation command carries a delay index of the second transmission network.

……

103N, the control device sends a delay evaluation command to the nth transmission controller, wherein the delay evaluation command carries a delay index of the nth transmission network.

After determining the delay index of each transmission network, in step 103 (including steps 103a to 103n), the control device may employ a "negotiation" mechanism to send a delay evaluation command to the transmission controller in each transmission network, respectively, where the delay evaluation command received by each transmission controller carries the delay index of the transmission network in which it is located. That is, the control device may "inquire" whether the transmission network in which each transmission controller is located can satisfy the delay index assigned in step 102 by transmitting the delay evaluating command.

Subsequently, the specific procedure of the above-mentioned "negotiation" mechanism will be described in detail by taking the first transport controller in the first transport network as an example.

104. And after receiving the delay evaluation command, the first transmission controller determines whether the delay of transmitting the target message in the first transmission network meets the delay index of the first transmission network.

105a, the first transmission controller sends an evaluation response to the control device, the evaluation response comprising a delay required for transmitting the target message in the first transmission network.

After the first transmission controller in the first transmission network receives the delay evaluating command in step 104, it may further determine that: whether the delay for transmitting the target packet within the first transport network meets the delay metric for the first transport network assigned in step 102.

Of course, if M processing procedures and the segment delay index of each processing procedure that need to be executed by the transmission device for transmitting the target packet in the first transmission network have been determined in step 102, the delay evaluation command may specifically include the identifier of the M processing procedures and the segment delay index of each processing procedure in the M processing procedures.

It should be noted that, in the embodiment of the present invention, the execution sequence between step 104 and steps 103b to 103n is not limited, and step 104 may be executed after the first transmission controller receives the delay evaluating command sent by the control device in step 103 a.

Specifically, the first transmission controller may first determine a transmission device, for example, a first transmission device, that transmits the target packet in the first transmission network, and then, the first transmission controller may send the identifiers of the M processing procedures carried in the delay evaluation command and the segment delay indicator of each processing procedure to the first transmission device, and the first transmission device evaluates whether the corresponding processing procedure can be completed in each segment delay indicator according to the current load condition.

Exemplarily, taking an SDN transmission network as an example, a delay evaluation command received by an SDN controller in the SDN transmission network includes identifiers of 2 processing procedures of ACL and NAT traversal, where a segment delay index of the ACL is 1ms, and a segment delay index of NAT traversal is 1 ms. Then, the SDN controller may forward the delay evaluation command to the router 1, and further, the router 1 estimates, according to the number of the messages currently required to be processed, delays of performing ACL and NAT traversal on the target message in the 2 processing procedures, respectively, so as to determine whether ACL can be completed within 1ms, and NAT traversal can be completed within 1 ms. If the corresponding processing procedure can be completed within each segment delay indicator, the router 1 may send an evaluation response satisfying the delay indicator of the first transport network to the first transport controller; if the corresponding processing cannot be completed within each segment delay metric, the router 1 may send an evaluation response to the first transmission controller that does not satisfy the delay metric of the first transmission network.

The evaluation response may include the time delay required for transmitting the target packet in the first transport network, which is obtained through evaluation, no matter whether the time delay index of the first transport network can be satisfied.

For example, when the router 1 estimates that the delay for executing the ACL for the target packet is 0.8ms and the delay for executing NAT traversal is 1ms, the router 1 may complete the corresponding processing procedure in each segment delay indicator; or, when the router 1 estimates that the time delay for executing the ACL for the target packet is 0.8ms and the time delay for executing the NAT traversal is 1.2ms, that is, the router 1 can complete the ACL within the segment delay index of 1ms, but cannot complete the NAT traversal within the segment delay index of 1 ms. At this time, the router 1 may carry the estimated time delay for executing the ACL and the time delay for executing the NAT traversal (i.e., the time delay required for transmitting the target packet in the first transmission network) in the evaluation response, and send the evaluation response to the first transmission controller, and subsequently send the evaluation response to the control device by the first transmission controller.

Similarly, after receiving the delay evaluation command sent by the control device, the transmission controllers in other transmission networks may also determine, by the method in step 104, whether the delay of transmitting the target packet in the transmission network satisfies the delay index of the transmission network, and further send an evaluation response to the control device, that is, execute the following steps 105b to 105 n:

105b, the second transmission controller sends an evaluation response to the control device.

……

105N, the nth transmission controller sends an evaluation response to the control device.

Similarly, the embodiment of the present invention does not limit the execution sequence between step 104 and steps 105b to 105 n.

106. After the control device receives the evaluation response sent by the first transmission controller, if the time delay of transmitting the target message in the first transmission network is greater than the time delay index of the first transmission network, the control device corrects the time delay index of the first transmission network.

If the delay of transmitting the target packet in the first transmission network is greater than the delay index of the first transmission network, for example, the delay (1.2ms) for performing NAT traversal is greater than the segment delay index (1ms) for NAT traversal, the control device may correct the delay index of the first transmission network.

In a possible implementation manner, if the delay of a processing procedure reported by a second transmission controller in a second transmission network (the second transmission network is any one of the N transmission networks except the first transmission network) received by the control device has a margin of 0.2ms (or more than 0.2 ms), the control device may assign the remaining 0.2ms in the second transmission network to the first transmission network on the basis of a segment delay indicator (1ms) traversed by the NAT in the first transmission network, and further, the controller may repeatedly execute the step 104 and the step 105 until the delay of the target packet transmitted in the first transmission network meets the delay indicator of the first transmission network.

Of course, in the above embodiment, since the delay of the router 1 executing the ACL is 0.8ms, which is smaller than the segment delay indicator (1ms) of the ACL, the control device may assign the remaining 0.2ms when executing the ACL to the segment delay indicator of the NAT traversal, that is, the segment delay indicator of the NAT traversal is 1ms +0.2ms — 1.2 ms.

In another possible implementation manner, the evaluation response reported by the first transmission controller may not include a time delay required for transmitting the target packet in the first transmission network. Then, in step 106, once the delay of transmitting the target packet in the first transmission network is greater than the delay index of the first transmission network, the control device may directly send a transmission device replacement command to the first transmission controller, and then the first transmission controller reselects a new transmission device, for example, the router 2, and re-evaluates whether the router 2 can meet the delay index of the first transmission network until a transmission device that can meet the delay index of the first transmission network is found. At this time, the embodiment of the present invention does not limit the execution sequence between step 106 and steps 105b to 105 n.

In addition, it is understood that there is no sequential execution order between the step 106 and the steps 103b to 103n, that is, for different transport networks, the processes of "negotiating" the delay indicator of a transport network between the control device and a transport controller in a certain transport network may be independent of each other.

Certainly, if, in the evaluation response reported by the first transmission controller, the time delay required for transmitting the target packet in the first transmission network is much longer than the time delay index of the first transmission network, that is: if the difference between the delay required for transmitting the target packet in the first transmission network and the delay index of the first transmission network is greater than a preset threshold, for example, the delay index of the first transmission network is 10ms, and the preset threshold is 5ms, and in the evaluation response reported by the first transmission controller, the delay required for transmitting the target packet in the first transmission network is 20ms (20ms-10ms > 5ms), then the control device may directly send a transmission device replacement command to the first transmission controller without correcting the delay index of the first transmission network, and the first transmission controller reselects a new transmission device until a transmission device that can meet the delay index is found.

107. And if the corrected time delay index of the first transmission network is still smaller than the time delay of transmitting the target message in the first transmission network, the control equipment sends a transmission equipment replacing command to the first transmission controller.

Specifically, if the modified delay indicator of the first transmission network is still smaller than the delay for transmitting the target packet in the first transmission network in step 106, for example, after all the remaining delay indicators in the transmission network are assigned to the first transmission network, the delay indicator of the first transmission network is still smaller than the delay for transmitting the target packet in the first transmission network, which indicates that the currently selected transmission device in the first transmission network cannot meet the delay indicator, the control device may send a transmission device replacement command to the first transmission controller, and the first transmission controller reselects a new transmission device until a transmission device that can meet the delay indicator is found.

By means of the above embodiments, the control device "negotiates" with the first transmission controller in the first transmission network to obtain the delay index of the first transmission network, which is matched with the delay of the actual transmission target packet. Similarly, the delay indicators of the other N-1 transmission networks can be "negotiated" according to the above method to obtain the delay indicator of each transmission network in the entire N transmission networks.

Subsequently, if the delay of transmitting the target packet in each transmission network meets the delay index of the transmission network, the control device sends a packet transmission command to the N transmission controllers respectively, that is, the following steps 108a to 108N are executed:

108a, the control device sends a message transmission command to the first transmission controller.

108b, the control device sends a message transmission command to the second transmission controller.

……

108N, the control device sends a message transmission command to the Nth transmission controller.

That is, when the delay index of each transmission network obtained by final "negotiation" does not exceed the delay for transmitting the target packet in each transmission network, the control device may send the packet transmission command to the N transmission controllers, respectively, and the transmission controller of the received packet transmission command, for example, the first transmission controller, may transmit the target packet according to the finally determined delay index of the first transmission network, so that the target packet may be transmitted according to the respective delay index when the target packet is transmitted in each transmission network, thereby improving the control accuracy of delay in the packet transmission process, and reducing the occurrence of the situation that the delay of the actual transmission packet does not meet the delay index.

In the above step 101-108, the relevant actions of the control device may be performed by the processor of the control device mentioned in fig. 2 according to the software module in the memory.

Further, currently, when a sending end and a receiving end process a packet, the packet is usually subjected to service processing based on an Open System Interconnection (OSI) reference model, for example, Transcoding (TC), and each packet needs to be subjected to service processing in a service layer when being sent and received.

That is to say, as shown in fig. 5, when a sending end processes each packet, it needs to perform 7 processing procedures, namely, a physical layer, a link layer, a connection layer, a protocol layer, a transaction layer, a presentation layer, and a service layer, on the packet, and then, transmission devices in each transmission network process the packet at the physical layer, the link layer, and the connection layer, and finally forward the packet to a receiving end, and then, the receiving end performs 7 processing procedures, namely, the physical layer, the link layer, the connection layer, the protocol layer, the transaction layer, the presentation layer, and the service layer, on the packet, and finally analyzes data in the packet.

However, when the protocol layer, the transaction layer, the presentation layer and the service layer process the packet, the CPU (central processing Unit) is required to interrupt data transfer between the ethernet and the CPU, and the sending end and the receiving end are required to process each packet in the protocol layer, the transaction layer, the presentation layer and the service layer, respectively, which undoubtedly prolongs the time delay in the packet transmission process.

In view of this, the embodiment of the present invention provides a time delay control method, and while the above-mentioned step 102-.

201. The control equipment determines a first service processing scheme for a sending end to send a target message and a second service processing scheme for a receiving end to receive the target message.

The first service processing scheme is a processing scheme of the sending end above a connection layer in an OSI reference model, and the second service processing scheme is a processing scheme of the receiving end above the connection layer in the OSI reference model.

For example, the control device may determine the first service processing scheme and the second service processing scheme according to the service type of the target packet.

202. The control device performs combined arrangement on the first service processing scheme and the second service processing scheme to obtain a combined service processing scheme, wherein the execution sequence of the first service processing scheme in the combined service processing scheme is before that of the second service processing scheme.

That is to say, in the joint service processing scheme after the joint arrangement, the first service processing scheme at the sending end should be processed first, and then the second service processing scheme at the receiving end should be processed, so that the logical correctness of the target packet can be ensured.

203. The control device sends the joint service processing scheme to the receiving end, and after the receiving end receives the target message, the receiving end executes the joint service processing scheme.

After the control device sends the joint service processing scheme to the receiving end, the sending end can be triggered to send the target message, unlike the prior art, however, as shown in fig. 7, the sending end does not need to perform the first service processing scheme on the target packet, i.e. the sender does not need to execute the processing scheme above the connection layer in the OSI reference model, thereby avoiding the sender interrupting the data transfer process between the CPUs via the ethernet network by the CPU, after the receiving end receives the target message, the receiving end executes the combined service processing scheme in a unified way, namely, the receiving end completes the processing scheme of the transmitting end above the connection layer in the OSI reference model and the processing scheme of the receiving end above the connection layer in the OSI reference model in one time through CPU interruption, therefore, the time delay consumption caused by the frequent interruption of the message service through the CUP between the Ethernet and the CPU is reduced.

In the above step 201 and 203, the relevant actions of the control device can be executed by the processor of the control device mentioned in fig. 2 according to the software module in the memory.

The above-mentioned scheme provided by the embodiment of the present invention is introduced mainly from the perspective of interaction between network elements. It is to be understood that the management device and the like include a hardware structure and/or a software module for performing each function in order to realize the functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiment of the present invention, the control device and the like may be divided into functional modules according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of dividing each functional module by corresponding functions, fig. 8 shows a possible structural schematic diagram of the control device according to the above embodiment, and the control device includes: a determination unit 31, a dispatch unit 32 and a sending unit 33.

A determining unit 31, configured to determine a service type of a target packet, where the target packet needs to pass through N transmission networks from a sending end to a receiving end in sequence, and N is greater than or equal to 1;

an assigning unit 32, configured to assign, according to the service type, a delay indicator of each transmission network in the N transmission networks to the target packet;

a sending unit 33, configured to send a delay evaluation command to the N transmission controllers, where the delay evaluation command received by a first transmission controller carries a delay indicator of a first transmission network, and the delay evaluation command is used to instruct the first transmission controller to determine whether a delay for transmitting the target packet in the first transmission network meets the delay indicator of the first transmission network, where the first transmission controller is any one of the N transmission controllers, the first transmission network is any one of the N transmission networks, and each transmission network is provided with one transmission controller; and if the time delay of transmitting the target message in each transmission network meets the time delay index of the transmission network, respectively sending message transmission commands to the N transmission controllers, wherein the message transmission commands received by the first transmission controller are used for instructing the first transmission controller to transmit the target message according to the time delay index of the first transmission network.

Further, the dispatch unit 32 is specifically configured to: A. for a first transmission network in the N transmission networks, determining M processing processes required by transmission equipment in the first transmission network to transmit the target message according to the service type, wherein M is more than or equal to 1; B. determining a segment delay index of each processing process in the M processing processes, wherein the delay index of the first transmission network is the sum of the segment delay indexes of each processing process; wherein the delay evaluation command received by the first transmission controller comprises: the identifiers of the M processing processes and the segment delay index of each processing process; and circularly executing the steps A and B until the time delay index of each transmission network in the N transmission networks is obtained.

Further, as also shown in fig. 8, the control apparatus further includes:

a correcting unit 34, configured to correct the delay indicator of the first transmission network if the delay of transmitting the target packet in the first transmission network is greater than the delay indicator of the first transmission network.

Further, as also shown in fig. 8, the control apparatus further includes:

a receiving unit 35, configured to receive an evaluation response sent by each transmission controller, where the evaluation response includes a time delay required for transmitting the target packet in each transmission network;

the modifying unit 34 is specifically configured to, if the time delay required for transmitting the target packet in a second transmission network is smaller than the time delay index of the second transmission network, assign the remaining time delay index of the second transmission network to the first transmission network on the basis of the time delay index of the first transmission network, where the second transmission network is any one of the N transmission networks except the first transmission network.

Further, the sending unit 33 is further configured to send a transmission device replacement command to the first transmission controller if the delay of transmitting the target packet in the first transmission network still does not meet the delay index of the first transmission network, where the transmission device replacement command is used to instruct the first transmission controller to reselect the transmission device meeting the delay index of the first transmission network to transmit the target packet.

Further, the sending unit 33 is further configured to send a transmission device replacement command to the first transmission controller if the time delay required for transmitting the target packet in the first transmission network is greater than the time delay index of the first transmission network, and a difference between the time delay required for transmitting the target packet in the first transmission network and the time delay index of the first transmission network is greater than a preset threshold, where the transmission device replacement command is used to instruct the first transmission controller to reselect the transmission device that meets the time delay index of the first transmission network to transmit the target packet.

Further, the sending unit 33 is further configured to send a transmission device replacement command to the first transmission controller if the time delay required for transmitting the target packet in the first transmission network is greater than the time delay index of the first transmission network, where the transmission device replacement command is used to instruct the first transmission controller to reselect the transmission device that meets the time delay index of the first transmission network to transmit the target packet.

Further, as also shown in fig. 8, the control device further comprises an orchestration unit 36,

the determining unit 31 is further configured to determine a first service processing scheme for the sending end to send the target packet and a second service processing scheme for the receiving end to receive the target packet, where the first service processing scheme and the second service processing scheme are both processing schemes above a connection layer in an OSI reference model;

the arranging unit 36 is configured to jointly arrange the first service processing scheme and the second service processing scheme to obtain a joint service processing scheme, where an execution sequence of the first service processing scheme in the joint service processing scheme is before the second service processing scheme;

the sending unit 33 is further configured to send the joint service processing scheme to the receiving end, and after the receiving end receives the target packet, the receiving end executes the joint service processing scheme.

In the present embodiment, the above-described control device is presented in the form of a functional unit. An "element" may refer to an application-specific integrated circuit (ASIC), an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that may provide the described functionality. In a simple embodiment, the determining unit 31, the dispatching unit 32 and the sending unit 33 in the control device may be implemented by a processor and a memory as shown in fig. 2, as will be appreciated by a person skilled in the art.

Further, the present application also provides a computer program, which includes instructions, when the computer program is executed by a computer, the computer may execute the corresponding flow of the method of the embodiment shown in fig. 3 or fig. 6.

Further, an embodiment of the present invention further provides a computer storage medium for storing computer software instructions for the control device, which includes a program designed for the control device in fig. 3 or fig. 6.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

Claims

1. A method for controlling delay, comprising:

the control equipment determines the service type of a target message, wherein the target message needs to sequentially pass through N transmission networks from a sending end to a receiving end, and N is more than or equal to 1;

the control equipment allocates a time delay index of each transmission network in the N transmission networks for the target message according to the service type;

the control device sends a delay evaluation command to the N transmission controllers respectively, the delay evaluation command received by the first transmission controller carries a delay index of a first transmission network, the delay evaluation command is used for indicating the first transmission controller to determine whether the delay of transmitting the target message in the first transmission network meets the delay index of the first transmission network, the first transmission controller is any one of the N transmission controllers, the first transmission network is any one of the N transmission networks, and each transmission network is internally provided with one transmission controller;

if the time delay of transmitting the target message in each transmission network meets the time delay index of the transmission network, the control device respectively sends message transmission commands to the N transmission controllers, and the message transmission commands received by the first transmission controller are used for instructing the first transmission controller to transmit the target message according to the time delay index of the first transmission network;

after the control device sends the delay evaluation commands to the N transmission controllers, the method further includes: and if the time delay of transmitting the target message in the first transmission network is greater than the time delay index of the first transmission network, the control equipment corrects the time delay index of the first transmission network.

2. The method according to claim 1, wherein the assigning, by the control device, the delay indicator for each of the N transport networks to the target packet according to the service type comprises:

A. for a first transmission network in the N transmission networks, the control equipment determines M processing processes required by the transmission equipment to transmit the target message in the first transmission network according to the service type, wherein M is more than or equal to 1;

B. the control device determines a segment delay index of each processing process in the M processing processes, wherein the delay index of the first transmission network is the sum of the segment delay indexes of each processing process; wherein the delay evaluation command received by the first transmission controller comprises: the identifiers of the M processing processes and the segment delay index of each processing process;

and the control equipment circularly executes the steps A and B until the time delay index of each transmission network in the N transmission networks is obtained.

3. The method according to claim 1, further comprising, after the control device sends the latency evaluation commands to the N transmission controllers, respectively:

the control equipment receives an evaluation response sent by each transmission controller, wherein the evaluation response comprises time delay required for transmitting the target message in each transmission network;

wherein, the control device corrects the delay index of the first transmission network, and includes:

if the time delay required for transmitting the target message in a second transmission network is smaller than the time delay index of the second transmission network, the control device assigns the remaining time delay index of the second transmission network to the first transmission network on the basis of the time delay index of the first transmission network, where the second transmission network is any one of the N transmission networks except the first transmission network.

4. The method of claim 3, wherein after assigning the remaining latency indicator of the second transport network to the first transport network based on the latency indicator of the first transport network, further comprising:

and if the time delay of the target message transmitted in the first transmission network still does not meet the time delay index of the first transmission network, the control device sends a transmission device replacing command to the first transmission controller, wherein the transmission device replacing command is used for instructing the first transmission controller to reselect the transmission device meeting the time delay index of the first transmission network to transmit the target message.

5. The method of claim 3, further comprising, after the control device receives the evaluation response sent by each transmission controller:

if the time delay required for transmitting the target message in the first transmission network is greater than the time delay index of the first transmission network, and the difference value between the time delay required for transmitting the target message in the first transmission network and the time delay index of the first transmission network is greater than a preset threshold value, the control device sends a transmission device replacement command to the first transmission controller, wherein the transmission device replacement command is used for instructing the first transmission controller to reselect the transmission device meeting the time delay index of the first transmission network to transmit the target message.

6. The method according to claim 1 or 2, wherein after the control device sends the latency evaluation commands to the N transmission controllers, respectively, the method further comprises:

and if the time delay required for transmitting the target message in the first transmission network is greater than the time delay index of the first transmission network, the control device sends a transmission device replacement command to the first transmission controller, wherein the transmission device replacement command is used for instructing the first transmission controller to reselect the transmission device meeting the time delay index of the first transmission network to transmit the target message.

7. The method according to any one of claims 1-5, further comprising:

the control device determines a first service processing scheme for the sending end to send the target message and a second service processing scheme for the receiving end to receive the target message, wherein the first service processing scheme and the second service processing scheme are both processing schemes above a connection layer in an Open System Interconnection (OSI) reference model;

the control device performs combined arrangement on the first service processing scheme and the second service processing scheme to obtain a combined service processing scheme, wherein the execution sequence of the first service processing scheme in the combined service processing scheme is before that of the second service processing scheme;

and the control equipment sends the joint service processing scheme to the receiving end, and after the receiving end receives the target message, the receiving end executes the joint service processing scheme.

8. The method of claim 6, further comprising:

9. A control apparatus, characterized by comprising:

the system comprises a determining unit, a sending unit and a receiving unit, wherein the determining unit is used for determining the service type of a target message, the target message needs to sequentially pass through N transmission networks from a sending end to a receiving end, and N is more than or equal to 1;

the allocating unit is used for allocating the time delay index of each transmission network in the N transmission networks to the target message according to the service type;

a sending unit, configured to send a delay evaluation command to N transmission controllers, where the delay evaluation command received by a first transmission controller carries a delay indicator of a first transmission network, and the delay evaluation command is used to instruct the first transmission controller to determine whether a delay for transmitting the target packet in the first transmission network meets the delay indicator of the first transmission network, where the first transmission controller is any one of the N transmission controllers, the first transmission network is any one of the N transmission networks, and each transmission network is provided with one transmission controller; if the time delay of transmitting the target message in each transmission network meets the time delay index of the transmission network, respectively sending message transmission commands to the N transmission controllers, wherein the message transmission commands received by the first transmission controller are used for instructing the first transmission controller to transmit the target message according to the time delay index of the first transmission network;

the control apparatus further includes: and the correcting unit is used for correcting the delay index of the first transmission network if the delay of transmitting the target message in the first transmission network is greater than the delay index of the first transmission network.

10. The control apparatus according to claim 9,

the dispatch unit is specifically configured to: A. for a first transmission network in the N transmission networks, determining M processing processes required by transmission equipment in the first transmission network to transmit the target message according to the service type, wherein M is more than or equal to 1; B. determining a segment delay index of each processing process in the M processing processes, wherein the delay index of the first transmission network is the sum of the segment delay indexes of each processing process; wherein the delay evaluation command received by the first transmission controller comprises: the identifiers of the M processing processes and the segment delay index of each processing process; and circularly executing the steps A and B until the time delay index of each transmission network in the N transmission networks is obtained.

11. The control device according to claim 10, characterized in that the control device further comprises a receiving unit,

the receiving unit is configured to receive an evaluation response sent by each transmission controller, where the evaluation response includes a time delay required for transmitting the target packet in each transmission network;

the modifying unit is specifically configured to, if a delay required for transmitting the target packet in a second transmission network is smaller than a delay index of the second transmission network, assign a remaining delay index of the second transmission network to the first transmission network on the basis of the delay index of the first transmission network, where the second transmission network is any one of the N transmission networks except the first transmission network.

12. The control apparatus according to claim 11,

the sending unit is further configured to send a transmission device replacement command to the first transmission controller if the delay of transmitting the target packet in the first transmission network still does not meet the delay index of the first transmission network, where the transmission device replacement command is used to instruct the first transmission controller to reselect the transmission device meeting the delay index of the first transmission network to transmit the target packet.

13. The control apparatus according to claim 11,

the sending unit is further configured to send a transmission device replacement command to the first transmission controller if the time delay required for transmitting the target packet in the first transmission network is greater than the time delay index of the first transmission network and a difference between the time delay required for transmitting the target packet in the first transmission network and the time delay index of the first transmission network is greater than a preset threshold, where the transmission device replacement command is used to instruct the first transmission controller to reselect a transmission device that meets the time delay index of the first transmission network to transmit the target packet.

14. The control apparatus according to claim 9 or 10,

the sending unit is further configured to send a transmission device replacement command to the first transmission controller if the time delay required for transmitting the target packet in the first transmission network is greater than the time delay index of the first transmission network, where the transmission device replacement command is used to instruct the first transmission controller to reselect the transmission device that meets the time delay index of the first transmission network to transmit the target packet.

15. Control device according to any of claims 9-13, characterized in that the control device further comprises a programming unit, wherein

The determining unit is further configured to determine a first service processing scheme for the sending end to send the target packet and a second service processing scheme for the receiving end to receive the target packet, where the first service processing scheme and the second service processing scheme are both processing schemes above a connection layer in an open system interconnection OSI reference model;

the arrangement unit is configured to jointly arrange the first service processing scheme and the second service processing scheme to obtain a joint service processing scheme, where an execution sequence of the first service processing scheme in the joint service processing scheme is before the second service processing scheme;

the sending unit is further configured to send the joint service processing scheme to the receiving end, and after the receiving end receives the target packet, the receiving end executes the joint service processing scheme.

16. The control device according to claim 14, characterized in that the control device further comprises an orchestration unit, wherein

17. A control apparatus, characterized by comprising: a processor, a memory, a bus, and a communication interface;

the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, and when the control device runs, the processor executes the computer execution instructions stored by the memory to enable the control device to execute the time delay control method according to any one of claims 1-8.

18. A delay control system, comprising a control device according to any one of claims 9 to 16, and N transmission controllers connected to the control device, each transmission controller being configured to manage a transmission device in a transmission network in which the transmission controller is located, wherein N ≧ 1.