CN109286954B - Data transmission method and transmission network controller - Google Patents
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Abstract
The embodiment of the invention provides a data transmission method and a transport network controller, relates to the technical field of communication, and solves the problem of how to ensure the service quality of low-delay service. The method comprises the steps that a transmission network controller acquires slice information of service data transmitted by a transmission network; the source address of the service data is the address of the first user equipment, and the destination address of the service data is the address of the second user equipment; the transmission network controller judges whether a sending link and a receiving link of the service data corresponding to the target slice information in the service data pass through the same transmission node in an access ring of the transmission network; the sending link is a path for the first user equipment to transmit the service data to the core network, and the receiving link is a path for the second user equipment to receive the service data from the core network; and if so, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the transmission node.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method and a transport network controller.
Background
In recent years, network delay performance has been paid more and more attention, and has gradually become a new hot spot in the communication industry. Low latency networks are also a growing direction of interest to operators. With the deep development of the internet +, a telecommunication network is deeply integrated with various industries, and some emerging industries and emerging services provide nearly harsh requirements on network delay, and some requirements even reach the extent that the existing optical transmission network technology and networking structure cannot meet the requirements. Therefore, it is very necessary to perform an in-depth analysis on the low-latency service requirements, so as to further study the low-latency optimization technology based on the optical transport network, so as to better meet the requirements of the low-latency services.
There are four types of services that clearly present a low latency requirement: the first type is a financial type customer, especially a stock exchange type customer; the second type is high-definition video services, including 4K/8K high-definition video live and on-demand services, high-definition video conferences, future Virtual Reality (VR, for short) and other high-bandwidth services with extremely high real-time requirements; the third type is partial cloud services, in particular services such as virtual migration, data hot backup and cloud desktop and cloud payment with higher real-time requirements; the fourth type is the transport bearer service of the fifth Generation mobile communication technology (english full name: 5th-Generation, abbreviated as 5G) mobile network, and currently, the 5G network has very strict delay index reserved for the transport bearer layer, and needs some new low-delay transmission technologies to guarantee. With the development of services such as electronic transaction, high-definition video, cloud computing and 5G, the time delay becomes an important performance index of a communication network, and the low time delay also becomes an important means for network capability competition of future operators.
According to the scheme, how to guarantee the service quality of the low-delay service becomes a problem to be solved urgently.
Disclosure of Invention
Embodiments of the present invention provide a data transmission method and a transport network controller, which solve the problem of how to guarantee the service quality of a low-latency service.
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 data transmission method, including a transport network controller obtaining slice information of service data transmitted by a transport network; the source address of the service data is the address of the first user equipment, and the destination address of the service data is the address of the second user equipment; the transmission network controller judges whether a sending link and a receiving link of the service data corresponding to the target slice information in the service data pass through the same transmission node in an access ring of the transmission network; the sending link is a path for the first user equipment to transmit the service data to the core network, and the receiving link is a path for the second user equipment to receive the service data from the core network; and if so, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the transmission node.
As can be seen from the foregoing solution, with the data transmission method provided in the embodiment of the present invention, the transport network controller determines, according to the slice information of the service data transmitted by the transport network, whether a sending link and a receiving link of the service data corresponding to the target slice information pass through the same transmission node in the access ring of the transport network; if yes, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the transmission node; after the service data is transmitted to the transmission node by the sending link, the service data is forwarded to the second user equipment from the transmission node; the data packet is only transmitted in the transmission network without passing through a core network, so that the transmission time of the data packet transmission can be greatly reduced; therefore, the problem of how to ensure the service quality of the low-delay service is solved.
A second aspect, a transport network controller of the present invention includes: the acquisition unit is used for acquiring the slice information of the service data transmitted by the transmission network; the source address of the service data is the address of the first user equipment, and the destination address of the service data is the address of the second user equipment; the processing unit is used for judging whether a sending link and a receiving link of the service data corresponding to the target slice information in the service data acquired by the acquisition unit pass through the same transmission node in an access ring of the transmission network or not; the sending link is a path for the first user equipment to transmit the service data to the core network, and the receiving link is a path for the second user equipment to receive the service data from the core network; and if so, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the transmission node.
In a third aspect, an embodiment of the present invention provides a computer storage medium, which includes instructions, when executed on a computer, cause the computer to execute the data transmission method according to any one of the above-mentioned first aspect.
A fourth aspect and an embodiment of the present invention provide a transport network controller, including: communication interface, processor, memory, bus; the memory is used for storing computer execution instructions, the processor is connected with the memory through a bus, and when the transmission network controller runs, the processor executes the computer execution instructions stored in the memory, so that the transmission network controller executes the data transmission method provided by any one of the above first aspect
It should be understood that any of the above-mentioned transport network controllers is configured to perform the method according to the first aspect provided above, and therefore, the beneficial effects achieved by the transport network controller may refer to the beneficial effects of the method according to the first aspect provided above and the corresponding solutions in the following detailed description, which are not described herein again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a network architecture diagram of a data transmission method according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;
fig. 3 is a second schematic flowchart of a data transmission method according to an embodiment of the present invention;
fig. 4 is a third schematic flowchart of a data transmission method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a transport network controller according to an embodiment of the present invention;
fig. 6 is a second schematic structural diagram of a transport network controller according to an embodiment of the present invention.
Reference numerals:
transport network controller-10;
an acquisition unit-101; a processing unit-102.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described 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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used for distinguishing the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the words "first", "second", and the like are not limited in number or execution order.
In the present embodiments, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion.
In the description of the embodiments of the present invention, the meaning of "a plurality" means two or more unless otherwise specified. For example, a plurality of networks refers to two or more networks.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.
For the mobile network, all mobile services pass through the core network, and the mobile core network performs unified management and control scheduling on mobile data traffic, issues the services to the access layer, and then sends the services to the destination base station. Even if the distance between two base stations is very close, traffic still needs to pass through the core network. The traditional mobile backhaul technology needs local data uploading and backhaul, which results in long network delay. Therefore, in the data transmission method provided in the embodiment of the present invention, the transport network controller determines, according to the slice information of the service data transmitted by the transport network, whether a sending link and a receiving link of the service data corresponding to the target slice information pass through the same transmission node in the access ring of the transport network; if yes, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the transmission node; after the service data is transmitted to the transmission node by the sending link, the service data is forwarded to the second user equipment from the transmission node; the data packet is only transmitted in the transmission network without passing through a core network, so that the transmission time of the data packet transmission can be greatly reduced; for example, the slicing information of the service data is an Ultra Reliable and Low Latency Communication (hereinafter, referred to as "Ultra Reliable & Low Latency Communication"), and the specific implementation manner is as follows:
the network architecture of the data transmission method provided by the embodiment of the present invention is shown in fig. 1, and includes User Equipment (User Equipment, UE for short), a base station eNodeB, a transport network, a network orchestrator, and gateway Equipment of a Core network (Evolved Packet Core, EPC for short); the transmission network is a layered structure and comprises an access ring, a convergence ring and a core ring from bottom to top, wherein the access ring, the convergence ring and the core ring all comprise a plurality of transmission network devices. The Network orchestrator is connected with a radio Network controller, a transport Network controller and a core Network controller, respectively, and the radio Network controller, the transport Network controller and the core Network controller are Software Defined Network (SDN) controllers, solid arrows represent service data, and dashed arrows represent control signaling.
Example one
An embodiment of the present invention provides a data transmission method, as shown in fig. 2, including:
s101, a transmission network controller acquires slice information of service data transmitted by a transmission network; the source address of the service data is the address of the first user equipment, and the destination address of the service data is the address of the second user equipment.
It should be noted that, in practical application, as shown in fig. 3, when UE1 (first user equipment) and UE2 (second user equipment) perform urrllc low-latency service communication, a specific service establishment procedure is as follows:
1. when the urrllc service is established, the UE1 will first report the slice information (including slice type urrllc slice and slice ID), and the UE1 reports the slice information to the radio network controller via the eNodeB and reports the slice information to the network orchestrator.
Specifically, when the slice type in the slice information sent by the UE is urrllc slice and/or the slice ID is slice1, it indicates that the service type of the service data is urrllc; specific staff may set different slice IDs according to actual situations to indicate that the service type is urrllc, which is not described herein again.
2. The network orchestrator synchronizes the slice information of the service to the core network controller, and the core network controller confirms the establishment of the connection with the eNodeB after confirming the slice information. Afterwards, the eNodeB performs inter-network Interconnection Protocol (IP) encapsulation on the service data of the urrllc service requested by the UE1, where the service data includes a source address and a destination address of the service data. After being encapsulated into an IP message by the base station, the service data is forwarded to the transport network equipment in the transport network, and the transport network equipment reports the IP address to the transport network controller.
3. Meanwhile, the network orchestrator issues the slice type to the transport network controller, so that the transport network controller receives the slice type urrllc, S102 is performed.
S102, the transmission network controller judges whether a sending link and a receiving link of the service data corresponding to the target slice information in the service data pass through the same transmission node in an access ring of the transmission network; the sending link is a path for the first user equipment to transmit the service data to the core network, and the receiving link is a path for the second user equipment to receive the service data from the core network.
It should be noted that, in practical applications, the slice type of the target slice information may be any service slice; at this time, when the transport network controller receives the service data transmitted by the transport network, the transport network controller controls the service data to be forwarded only through the access ring, so that all services can be accelerated; however, such an arrangement may cause the transmission pressure of the transmission network device in the access ring to be too high, which may cause network congestion, and may not achieve the effect of reducing data transmission delay; in view of this, the data transmission method provided by the embodiment of the present invention may be executed only for a part of services, for example, the slice type of the target slice information may be uRLLC, and since the requirement of such services on the transmission delay of data transmission is higher, the data transmission method provided by the embodiment of the present invention may effectively ensure the fast transmission of service data, thereby ensuring the user experience.
Optionally, the slice information includes a slice type of the service data, and the target slice information includes a slice type of the service data, which is a urrllc slice; the method for judging whether a sending link and a receiving link of the service data corresponding to the target slice information in the service data pass through the same transmission node in an access ring of the transport network by the transport network controller includes:
s1020, when the transport network controller determines that the slice type of the service data is a urrlc slice, determining whether a sending link and a receiving link of the service data pass through a same transmission node in an access ring of the transport network.
And S103, if yes, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the transmission node.
Optionally, as shown in fig. 4, the method further includes:
and S104, if not, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the core network.
It should be noted that, in practical applications, in order to ensure that the service data has a low data transmission delay, as shown in fig. 1, the control plane of the transport network in the designated area may be extracted and unified into a transport network controller (SDN controller). The SDN controller determines whether the slice type of the service data is a preset type (e.g., urrllc) or not, and executes s102 when determining that the slice type is the preset type, so that the service data corresponding to the slice type is forwarded in an access ring of a transport network, thereby ensuring fast transport of the service data, i.e., reducing data transmission delay of the service data.
As can be seen from the foregoing solution, with the data transmission method provided in the embodiment of the present invention, the transport network controller determines, according to the slice information of the service data transmitted by the transport network, whether a sending link and a receiving link of the service data corresponding to the target slice information pass through the same transmission node in the access ring of the transport network; if yes, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the transmission node; after the service data is transmitted to the transmission node by the sending link, the service data is forwarded to the second user equipment from the transmission node; the data packet is only transmitted in the transmission network without passing through a core network, so that the transmission time of the data packet transmission can be greatly reduced; therefore, the problem of how to ensure the service quality of the low-delay service is solved.
A second aspect, a transport network controller 10 of the present invention, as shown in fig. 5, includes:
an obtaining unit 101, configured to obtain slice information of service data transmitted by a transport network; the source address of the service data is the address of the first user equipment, and the destination address of the service data is the address of the second user equipment.
A processing unit 102, configured to determine whether a sending link and a receiving link of service data corresponding to the target slice information in the service data acquired by the acquiring unit 101 pass through the same transmission node in an access ring of a transport network; the sending link is a path for the first user equipment to transmit the service data to the core network, and the receiving link is a path for the second user equipment to receive the service data from the core network.
And if so, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the transmission node.
Optionally, the slice information includes a slice type of the service data, and the target slice information includes a slice type of the service data, which is an RLLC slice; the processing unit 102 is specifically configured to, when the slice type of the service data is an RLLC slice, determine whether a sending link and a receiving link of the service data pass through the same transmission node in an access ring of the transport network.
Optionally, the processing unit 102 is further configured to control the transport network to forward the service data received from the first user equipment to the second user equipment through the core network if it is determined that the sending link and the receiving link of the service data corresponding to the target slice information in the service data do not pass through the same transmission node in the access ring of the transport network.
All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and the function thereof is not described herein again.
In case of an integrated module, the transport network controller comprises: the device comprises an acquisition unit, a processing unit and a storage unit. The processing unit is configured to control and manage actions of the transport network controller, for example, the processing unit is configured to support the transport network controller to perform processes S101, S102, and S103 in fig. 2; the acquisition unit is used for supporting information interaction between the transport network controller and other devices. A storage unit for storing program codes and data of the transport network controller.
For example, the processing unit is a processor, the storage unit is a memory, and the obtaining unit is a communication interface. The transport network controller, as shown in fig. 6, includes a communication interface 501, a processor 502, a memory 503, and a bus 504, where the communication interface 501 and the processor 502 are connected to the memory 503 through the bus 504.
The processor 502 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an Application-Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to control the execution of programs in accordance with the teachings of the present disclosure.
The Memory 503 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 disk storage, optical disk storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage 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.
The memory 503 is used for storing application program codes for executing the scheme of the application, and the processor 502 controls the execution. The communication interface 501 is used for information interaction with other devices, such as a remote controller. The processor 502 is configured to execute application program code stored in the memory 503 to implement the methods described in the embodiments of the present application.
There is further provided a computer storage medium (or media) comprising instructions which, when executed, perform the method operations performed by the transport network controller in the above embodiments. Additionally, a computer program product is also provided, comprising the above-described computing storage medium (or media).
It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It can be understood that any of the above-mentioned transport network controllers is configured to execute the method corresponding to the above-mentioned embodiments, and therefore, the beneficial effects achieved by the transport network controllers may refer to the method of the above-mentioned embodiment one and the beneficial effects of the solutions in the following detailed description, which are not described herein again.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A method of data transmission, comprising:
the method comprises the steps that a transmission network controller obtains slice information of service data transmitted by a transmission network; the source address of the service data is the address of first user equipment, and the destination address of the service data is the address of second user equipment;
the transmission network controller judges whether a sending link and a receiving link of the service data corresponding to the target slice information in the service data pass through the same transmission node in an access ring of the transmission network; the sending link is a path through which the first user equipment transmits the service data to a core network, and the receiving link is a path through which the second user equipment receives the service data from the core network;
and if so, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the transmission node.
2. The data transmission method according to claim 1, wherein the slice information includes a slice type of the service data, and the target slice information includes a slice type of the service data being a urrllc slice;
the method for judging whether a sending link and a receiving link of the service data corresponding to the target slice information in the service data pass through the same transmission node in the access ring of the transport network by the transport network controller includes:
and when the transmission network controller judges that the slice type of the service data is a uRLLC slice, judging whether a sending link and a receiving link of the service data pass through the same transmission node in an access ring of the transmission network.
3. The method of claim 1, further comprising:
if not, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the core network.
4. A transport network controller, comprising:
the acquisition unit is used for acquiring the slice information of the service data transmitted by the transmission network; the source address of the service data is the address of first user equipment, and the destination address of the service data is the address of second user equipment;
a processing unit, configured to determine whether a sending link and a receiving link of service data corresponding to target slice information in the service data acquired by the acquisition unit pass through the same transmission node in an access ring of the transport network; the sending link is a path through which the first user equipment transmits the service data to a core network, and the receiving link is a path through which the second user equipment receives the service data from the core network;
and if so, controlling the transmission network to forward the service data received from the first user equipment to the second user equipment through the transmission node.
5. The transport network controller of claim 4, wherein the slice information comprises a slice type of traffic data, and the target slice information comprises a slice type of traffic data is a uRLLC slice;
the processing unit is specifically configured to, when determining that the slice type of the service data is urlcslice, determine whether a sending link and a receiving link of the service data pass through a same transmission node in an access ring of the transport network.
6. The transport network controller according to claim 4, wherein the processing unit is further configured to control the transport network to forward the service data received from a first user equipment to a second user equipment via a core network if it is determined that a sending link and a receiving link of the service data corresponding to the target slice information in the service data do not pass through a same transport node in an access ring of the transport network.
7. A computer storage medium comprising instructions which, when run on a computer, cause the computer to perform the data transfer method of any one of claims 1-3 above.
8. A transport network controller comprising: communication interface, processor, memory, bus; the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, when the transmission network controller is operated, the processor executes the computer execution instructions stored by the memory, so that the transmission network controller executes the data transmission method according to any one of the claims 1-3.
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