CN108933686B - Network slicing method, computer equipment and storage medium - Google Patents
Network slicing method, computer equipment and storage medium Download PDFInfo
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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Abstract
The invention discloses a network slicing method, computer equipment and a storage medium, relates to the technical field of communication, and aims to solve the problem of low utilization rate of network resources and poor disaster tolerance caused by numerous service devices and mobile network service standards in the prior art. The method comprises the following steps: logically abstracting physical resources of a network to form virtual network resources; and slicing and integrating the virtual network resources according to different service requirements, so that each sliced network formed by integration provides network services corresponding to the service requirements.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a network slicing method, a computer device, and a storage medium.
Background
From the past to the present 4G networks, mobile networks mainly serve mobile handsets, and generally only some optimizations are made for handsets. However, in the 5G era, mobile networks require devices serving various types and requirements, and these devices often require different types of networks and have varying requirements in terms of mobility, charging, security, policy control, latency, reliability, etc.
For example, a large-scale internet of things service is connected with a fixed sensor to measure temperature, humidity, rainfall and the like. The features of handover, location update, etc. of those primary serving handsets in the mobile network are not required. In addition, the mission-critical internet of things services such as automatic driving and remote control robots require end-to-end delay of several milliseconds, which is very different from the mobile broadband service. This means that a dedicated network needs to be built for each service. For example, one service 5G mobile phone, one service 5G large-scale internet of things, and one service 5G mission-critical internet of things may be specifically shown in fig. 1.
Therefore, as the service standards and service equipment required by different mobile networks are different, a set of bearer network needs to be established for each mobile network, and a large amount of resource repetition and waste are generated. Moreover, the disaster recovery system is difficult to guarantee, and once a set of bearer network is damaged, the service of the whole mobile network is interrupted.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a network slicing method, a computer device and a storage medium, so as to solve the problem of low utilization rate of network resources and poor disaster tolerance caused by numerous mobile network service standards and service devices in the prior art.
In one aspect, the present invention provides a network slicing method, including: logically abstracting physical resources of a network to form virtual network resources; and slicing and integrating the virtual network resources according to different service requirements, so that each sliced network formed by integration provides network services corresponding to the service requirements.
Optionally, the logically abstracting physical resources of the network to form virtual network resources includes: numbering and logically splitting physical ports of physical network elements in a physical network layer, logical interfaces in the physical ports and physical topological connections of the physical network elements to form corresponding virtual resources, wherein all the virtual resources form a virtual resource pool; and recombining the virtual resources in the virtual resource pool to form a virtual network element.
Optionally, each of the virtual network elements includes a plurality of virtual interfaces and a plurality of virtual topology connections; the virtual interfaces correspond to the physical ports one to one, and the virtual topological connections correspond to the physical topological connections one to one; each virtual interface and/or each virtual topology connection in each virtual network element comes from one or more physical network elements.
Optionally, the slicing and integrating the virtual network resources according to different service requirements includes: carrying out compatible processing on different equipment types and different equipment versions of the virtual network resources; mapping the minimum department unit and the minimum operation unit in the resource model to the corresponding micro-service and execution body according to the difference of the service requirements; packaging the executive body and the micro-service to form corresponding services, and further combining the services into a network function module with a preset function; and encapsulating the network function module to form the slice network.
Optionally, after the slicing and integrating the virtual network resources according to the difference of the service requirements, the method further includes: binding the slicing network with a corresponding user; and creating, deleting or modifying corresponding service information on the slice network according to the service configuration instruction.
Optionally, the slice network has a preset lifetime; and after the life time of the slice network expires, recovering the corresponding service and releasing the virtual network resource corresponding to the slice network.
Optionally, after slice integration is performed on the virtual network resources according to different service requirements, the method further includes: monitoring the state of the slice network; and under the condition that the slicing network fails, slicing integration is carried out on the virtual network resources again so as to replace the failed slicing network with a new slicing network generated by integration to complete corresponding services.
Optionally, when the slice network fails, re-performing slice integration on the virtual network resource to replace the failed slice network with a new slice network generated by integration to complete a corresponding service includes: configuring mirror subnet slices for the slice network and storing the mirror subnet slices; and when the maintenance parameters of the slice network reach preset switching conditions, switching the service into the mirror subnet slice.
In another aspect, the present invention also provides a computer device, including: a processor and a memory; the memory is used for storing computer instructions, and the processor is used for operating the computer instructions stored by the memory to realize any network slicing method provided by the invention.
In another aspect, the present invention also provides a computer readable storage medium storing one or more programs, which are executable by one or more processors, to implement any of the network slicing methods provided by the present invention.
The network slicing method, the computer equipment and the storage medium provided by the embodiment of the invention can logically abstract physical resources of a network to form virtual network resources, and then slice and integrate the virtual network resources according to different service requirements, so that each sliced network formed by integration provides network services corresponding to the service requirements. Therefore, through the virtualization and logic slicing of the bearer network, a set of bearer network can meet the mobile network with various service standards through different network slices, so that corresponding services can be provided for various networks conveniently, and the bearer network becomes a dynamically expandable network through the virtualization and logic slicing, so that the disaster tolerance performance of the network is effectively improved.
Drawings
FIG. 1 is a schematic diagram of a 5G application scenario;
fig. 2 is a flowchart of a network slicing method provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a network structure on which the network slicing method provided by the embodiment of the present invention is based;
FIG. 4 is another flow chart of a network slicing method provided by an embodiment of the present invention;
fig. 5 is a flowchart of a network slicing method provided by an embodiment of the present invention;
fig. 6 is a detailed flowchart of a network slicing method according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As shown in fig. 2, an embodiment of the present invention provides a network slicing method, including:
s11, logically abstracting physical resources of a network to form virtual network resources;
and S12, slicing and integrating the virtual network resources according to different service requirements, so that each sliced network formed by integration provides network services corresponding to the service requirements.
According to the network slicing method provided by the embodiment of the invention, the physical resources of the network can be logically abstracted to form the virtual network resources, and then the virtual network resources are sliced and integrated according to different service requirements, so that each sliced network formed by integration provides the network service corresponding to the service requirements. Therefore, through the virtualization and logic slicing of the bearer network, a set of bearer network can meet the mobile network with various service standards through different network slices, so that corresponding services can be provided for various networks conveniently, and the bearer network becomes a dynamically expandable network through the virtualization and logic slicing, so that the disaster tolerance performance of the network is effectively improved.
Therefore, the network slicing method provided by the embodiment does not re-establish the 5G network, performs logical abstraction and virtualization of resources on network resources in the existing 4G-bearing network, and realizes multiplexing of the carrying network through slicing isolation and automatic disaster recovery.
Optionally, in step S11, logically abstracting physical resources of a network to form virtual network resources may include:
numbering and logically splitting physical ports of physical network elements in a physical network layer, logical interfaces in the physical ports and physical topological connections of the physical network elements to form corresponding virtual resources, wherein all the virtual resources form a virtual resource pool;
and recombining the virtual resources in the virtual resource pool to form a virtual network element.
Specifically, a plurality of physical network elements and physical resources such as physical topological connections between the physical network elements exist in the physical network layer, each physical network element may further include various external physical ports and internal logical interfaces, it is necessary to perform logical splitting of a minimum unit on the physical resources first, and map all the split physical resources into virtual resources one by one, so that all the virtual resources form a virtual resource pool. The virtual network element can be formed by recombining the virtual resources in the virtual resource pool. The virtual resources in the virtual resource pool can be recombined into a plurality of virtual network elements, and the virtual network elements are basic units for network slicing.
Optionally, each virtual network element is formed by recombining virtual resources, and each virtual network element may include a plurality of virtual interfaces and a plurality of virtual topology connections; the virtual interfaces correspond to the physical ports one to one, and the virtual topological connections correspond to the physical topological connections one to one; each virtual interface and/or each virtual topology connection in each virtual network element comes from one or more physical network elements. That is, the physical ports, logical interfaces and physical topological connections originally belonging to different physical network elements can now be integrated into the same virtual network element, breaking the original physical boundary and facilitating further fusion of the network service level.
And (3) carrying out virtualization transformation on the bearing network, logically abstracting and virtualizing the physical resources of the network to form a network virtual resource pool based on a physical position and a physical topology, and then organizing the virtual network resources as required to form a slice network. Different slicing networks have certain logical isolation, that is, abstracted virtual resources are isolated from each other in different degrees in terms of forwarding, control and management, and relative to physical isolation, logical isolation refers to logical isolation formed under the common physical limit on the basis of physical unification or sharing. Each slicing network has the characteristics of an independent bearing network, including independent visualized topology and independent control plane.
Optionally, in step S12, the slice integration of the virtual network resource according to the difference of the service requirements may include:
carrying out compatible processing on different equipment types and different equipment versions of the virtual network resource; specifically, since the virtual network resource relates to multiple device types, each device type may include multiple device versions, in order to complete network slicing of various devices, it is necessary to perform differentiation processing on these underlying devices, so that slicing operation can be compatible with various device types and various device versions;
mapping the minimum department unit and the minimum operation unit in the resource model to the corresponding micro-service and execution body according to the difference of the service requirements;
packaging the executive body and the micro-service to form corresponding services, and further combining the services into a network function module with a preset function;
and packaging the network function module to form the slice network.
It should be noted that, after the virtual network resources are sliced and integrated according to the difference of the service requirements in step S12, so that each sliced network formed by integration provides a network service corresponding to the service requirement, the formed sliced network can be divided into two states: a planning state and a deployment state. The planning state refers to that the slicing network is not bound with any user after being formed, and the service can be deployed according to the user requirement after the slicing network is bound with the user and enters a deployment state. The deployment state means that the slice network is bound with users, and service deployment can be directly performed on the slice network.
Based on this, in an embodiment of the present invention, after slicing and integrating the virtual network resources according to different service requirements, if the sliced network is in a planned state, the network slicing method provided in the embodiment of the present invention may further include:
binding the slicing network with a corresponding user;
and creating, deleting or modifying corresponding service information on the slice network according to the service configuration instruction.
If the slice network is in a deployment state, corresponding service information can be created, deleted or modified on the slice network directly according to the service configuration instruction, and corresponding service deployment is completed.
Alternatively, whether the slicing network is in a planning state or a deployment state, each slicing network may be assigned a preset lifetime, i.e., a lifetime. And each slicing network completes corresponding service in respective survival time, and after the survival time is expired, the corresponding service needs to be recovered and the virtual network resources corresponding to the slicing network are released, so that the virtual resources are fully utilized.
In order to improve disaster recovery performance of the slicing network, further, in an embodiment of the present invention, after slicing and integrating the virtual network resources according to different service requirements in step S12, the network slicing method provided in the embodiment of the present invention may further include:
monitoring the state of the slice network;
and under the condition that the slicing network fails, slicing integration is carried out on the virtual network resources again so as to replace the failed slicing network with a new slicing network generated by integration to complete corresponding services.
Optionally, whether the working state of the slice network is normal or failed may be determined by monitoring parameter indexes such as preset service data of the slice network, and when the slice network fails, slice integration may be performed on the virtual network resources again, so that the failed slice network is replaced by a new slice network generated by integration to complete a corresponding service. The method specifically comprises the following steps:
configuring mirror subnet slices for the slice network and storing the mirror subnet slices;
and when the maintenance parameters of the slice network reach preset switching conditions, switching the service into the mirror subnet slice.
The network slicing method provided by the invention is explained in detail by specific embodiments.
Fig. 3 shows a network structure on which the network slicing method provided by the embodiment of the present invention is based. Specifically, the physical resources are converted into virtual resources, the real physical network elements and the topological connections of the physical network layer are subjected to virtualization splitting processing, all the physical port logical interfaces and the topological connections of each network element are numbered, and then are recombined according to requirements to form a new virtual network element, and the virtual interfaces and the virtual topological connections in the virtual network element can come from different real physical network elements and topologies. Network slicing refers to a mobile network which meets different service requirements in different combination forms on a virtual resource layer to form a new seemingly independent various network slicing layers, and each layer performs different mobile network services according to a time life cycle. After the slicing network is formed, the slicing network can be provided for a user to manage, so that the user can only see the formed network after virtualization and logic slicing, and the slicing network can provide services such as slicing network management, safety, performance monitoring, alarming, logging, fault processing and the like.
Fig. 4 is a flowchart of a network slicing method according to an embodiment of the present invention. As shown in fig. 4, after a Virtual Network Resource Function (VNRF) manager logs in, a physical resource is created first, a virtual resource is created next, a form of a virtual network is configured, and a user and a virtual network to which the user belongs are configured, which specifically includes:
physical resources are created, including PN (physical network), PLINK (physical link), logical port, etc.
Create virtual resources, vNode (virtual node): vNode name, ID, type, home VN (virtual network), UNI (User network interface) port and attribute, vNNI (virtual User network interface) port and attribute, create vLink (virtual link), vPort (virtual port). Creating virtual resources may involve multiple schemes, for example different device types, such as PTN, OTN schemes each different. For the PTN, it is conceivable to use an LSP (label switch path) tunnel nesting technique (the outer layer LSP is a VLAN, and the inner layer LSP is a VN service), a VLAN (virtual local area network), or the like.
And performing logic slicing, where the logic slicing in this embodiment means slicing the virtualized virtual resource network. After the underlying Hardware is virtualized, the form of the virtual network can be configured: a planned state or a deployed state.
The method comprises the steps that a Client user is created, deployed virtual network resources are configured for the Client user, the Client user carries out various service creation (such as LSP, PW, L2VPN and L3 VPN) on the allocated virtual resources, VNRF monitors the state of a virtual network, once a fault occurs, virtual network resources are triggered to be reallocated immediately, and smooth service is guaranteed.
Fig. 5 is another flowchart of a network slicing method according to an embodiment of the present invention. As shown in fig. 5, step S401, step S402, and step S403 describe the slice network in detail from the aspects of generation of the slice network, traffic operation, and failure replacement, respectively. Specifically, in step S401, the VNFM opens a 5G dedicated internet of things line, creates a new Client user, finds a virtual network that can meet the requirements of the 5G mobile internet of things service within a resource range specified by a Client, binds the Client user and the virtual network, and sets a life cycle. In step S402, the Client user logs in the virtual network manager to check the virtual resources allocated by the VNFM, and the Client user creates, deletes or modifies the corresponding service information on the virtual network system. In step S403, when the virtual network of the Client user encounters a fault interrupt, the VNFM immediately finds an idle virtual network to be loaded and allocates the virtual network to the Client user. The service of the user is randomly and automatically migrated to the new virtual network, and the service is normally started. When the life cycle of the Client user is expired, the Client user cannot enter the distributed virtual network system any more, and the virtual network resources are recovered.
Fig. 6 is a detailed flowchart of a network slicing method according to an embodiment of the present invention. The embodiment is described by taking an example that a planned state of a service Network capable of simultaneously carrying a Packet Transport Network (PTN) and an Optical Transport Network (OTN) is logically sliced from a virtual Network, and mainly includes the following steps:
s601, performing differentiation processing, i.e., compatibility processing. The bottom layer Hardware, after virtualization, firstly performs inter-device differentiation processing through an IAAS platform through an adaptation container of the device and an adapter manager of the device. The adapter manager is used for performing differentiation processing on different types of equipment, and the adapter manager is used for performing differentiation processing on different equipment versions under the same equipment type. For example: after differentiation of the device container and the device adapter processing device is performed on physical port logical ports of the virtualized PTN device, the virtualized OTN device and the like, logical segment layers in the topology and the like, interfaces issued from a management layer by the virtualized device are unified.
S602, mapping service. And mapping the minimum deployment unit POD and the minimum operation unit Container in the resource model into the micro-service SM \ MM and the executive body Session and Seissurel one by one. Wherein POD is the name of the smallest department unit, container is the name of the smallest operation unit, SM \ MM is the name of the micro-service, and Session and Seissurel are the names of the executors. For example: the minimum unit after virtualization is a virtual logic sub-port of the PTN, a logic sub-port of the OTN and a basic logic segment layer. The minimum operation unit is UNI of 4 physical ports, logical sub-port NNI of 1L 2 layer, L2L3 of a bridge, 1 logical sub-port of L3 layer, mapping to a micro service of SM providing PTN and OTN combined service, and then putting into the executive body of Session.
And S603, configuring a managed executive network. And (3) executing the executable and the micro-service through a step 1: the N modes are uniformly packaged into a service, the service is transmitted to an NFC (network function control) module containing PGW or ACTL or combined PGW \ ACTL type, after the NFC module is combined, a network NF of MME or SGW is formed, and the network NF is processed by RAN, EPC and IMS, and finally a subnet slice is formed. Wherein PGW and ACTL are different types of services, respectively. For example: the SM microservice providing the PTN and OTN combined services and other combined services are put into a Session executive body (in the executive body, the SM microservice can be the same combined service or different combined services), then the combined services are transmitted to an ACTL module of NFC, and the network function control of the combined services is realized through the ACTL. The VNMF combines various service networks under the control of network functions, finally forming an MME-type NF. The NF configures the RAN with a life cycle of 3 months, the EPC with a planning state, the IMS configures maintenance parameters, and finally, the NF switches out a logic-switched planning-state service network capable of simultaneously bearing the PTN and the OTN.
And S604, protecting the mirror image. And the VNMF configures the mirror image subnet slice through the PAAS module and stores the mirror image subnet slice in the VIM, and when a VNFM manager monitors that the value of the IMS maintenance parameter reaches the switching condition through an editor, the VNFM manager directly switches the network to the corresponding mirror image subnet slice in the VIM.
In the network slicing method provided by this embodiment, the existing bearer network is upgraded and modified by virtualization of the bearer network and logic slicing, so that one set of bearer network can meet a mobile network with multiple service standards, and the modified network-clouded bearer network is a dynamically extensible network, has an automatic self-healing capability, and can implement automatic switching of a network disaster recovery system.
Accordingly, an embodiment of the present invention further provides a computer device, including: a processor and a memory; the memory is configured to store computer instructions, and the processor is configured to execute the computer instructions stored in the memory to implement any network slicing method provided in the foregoing embodiments, so that corresponding technical effects can also be achieved.
Accordingly, an embodiment of the present invention further provides a computer-readable storage medium, where one or more programs are stored, and the one or more programs can be executed by one or more processors to implement any one of the network slicing methods provided in the foregoing embodiments, so that corresponding technical effects can also be achieved, which have been described in detail above and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A method of network slicing, comprising:
logically abstracting physical resources of a network to form virtual network resources;
slicing and integrating the virtual network resources according to different service requirements so that each sliced network formed by integration provides network services corresponding to the service requirements;
wherein logically abstracting physical resources of a network to form virtual network resources comprises:
numbering and logically splitting physical ports of physical network elements in a physical network layer, logical interfaces in the physical ports and physical topological connections of the physical network elements to form corresponding virtual resources, wherein all the virtual resources form a virtual resource pool;
recombining the virtual resources in the virtual resource pool to form a virtual network element;
the slicing and integrating the virtual network resources according to the difference of the service requirements comprises:
carrying out compatible processing on different equipment types and different equipment versions of the virtual network resources;
mapping the minimum department unit and the minimum operation unit in the resource model to the corresponding micro-service and execution body according to the difference of the service requirements;
packaging the executive body and the micro-service to form corresponding services, and further combining the services into a network function module with a preset function;
and encapsulating the network function module to form the slice network.
2. The method of claim 1, wherein each of the virtual network elements comprises a plurality of virtual interfaces and a plurality of virtual topology connections; the virtual interfaces correspond to the physical ports one to one, and the virtual topological connections correspond to the physical topological connections one to one; each virtual interface and/or each virtual topology connection in each virtual network element comes from one or more physical network elements.
3. The method according to claim 1 or 2, wherein after said slicing and integrating the virtual network resources according to the difference of the service demands, the method further comprises:
binding the slicing network with a corresponding user;
and creating, deleting or modifying corresponding service information on the slice network according to the service configuration instruction.
4. The method of claim 3, wherein the sliced network has a preset time-to-live;
and after the life time of the slice network expires, recovering the corresponding service and releasing the virtual network resource corresponding to the slice network.
5. The method according to claim 1 or 2, wherein after the slicing and integrating the virtual network resources according to the difference of the service demands, the method further comprises:
monitoring the state of the slice network;
and under the condition that the slicing network fails, slicing integration is carried out on the virtual network resources again so as to replace the failed slicing network with a new slicing network generated by integration to complete corresponding services.
6. The method according to claim 5, wherein the re-slicing and integrating the virtual network resources in case of failure of the slicing network, so as to replace the failed slicing network with a new slicing network generated by integration to complete corresponding services, comprises:
configuring mirror image subnet slices for the slice network and storing the mirror image subnet slices;
and when the maintenance parameters of the slice network reach preset switching conditions, switching the service into the mirror subnet slice.
7. A computer device, comprising: a processor and a memory;
the memory is configured to store computer instructions, and the processor is configured to execute the computer instructions stored by the memory to implement the network slicing method of any of claims 1 to 6.
8. A computer-readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the network slicing method of any one of claims 1 to 6.
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| CN110086662B (en) * | 2019-04-22 | 2020-09-01 | 烽火通信科技股份有限公司 | Method for implementing demand definition network and network architecture |
| CN110602717B (en) * | 2019-09-18 | 2021-12-31 | 四川长虹电器股份有限公司 | Disaster recovery processing method for 5G network slice |
| CN111010293A (en) * | 2019-11-27 | 2020-04-14 | 中国联合网络通信集团有限公司 | Virtual resource management method and device |
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| CN114258020B (en) * | 2020-09-25 | 2023-12-12 | 中移物联网有限公司 | Proprietary cloud deployment method, platform and electronic equipment |
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