CN113395169A - 5g network slicing method for smart power grid - Google Patents
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- H04L41/22—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks comprising specially adapted graphical user interfaces [GUI]
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- H—ELECTRICITY
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Abstract
The invention discloses a 5g network slicing method of a smart power grid, which comprises the following steps: s1: firstly, performing network slicing on a network of an external terminal by an access, transmission and core network domain slicing enabling system; s2: then the network slice identification and access system maps out the network slice example and the terminal service type, and registers the terminal to the correct network slice example, the invention has the advantages that: the network slicing examples of the access, transmission and core network are realized by taking the access, transmission and core network domain slicing enabling system as a basic supporting technology; mapping between the network slice instance and the terminal service type is realized through the network slice identifier and the access system, and the terminal is registered to the correct network slice instance; the arrangement and management of the end-to-end network slices are realized through a network slice end-to-end management system; the system can perform acquisition analysis and quasi-real-time processing on network performance indexes of each domain through the network slice end-to-end SLA guarantee system, and the performance of the system is guaranteed to meet the SLA requirements of users.
Description
Technical Field
The invention relates to the technical field of network slicing, in particular to a 5g network slicing method for a smart power grid.
Background
The network slice is a networking mode according to needs, an operator can separate a plurality of virtual end-to-end networks on a unified infrastructure, and each network slice is logically isolated from a wireless access network carrying network to a core network so as to adapt to various types of applications. In one network slice, at least three parts of a wireless network sub-slice, a bearer network sub-slice and a core network sub-slice can be divided. With the development of the 5G network, for the 5G network, the existing network slicing method is not mature, the supporting technical conditions are insufficient, the network is difficult to access, meanwhile, the terminal is difficult to be connected with the network slicing system, the arrangement management of the end-to-end network slices is messy and difficult to arrange, the application data of the user is difficult to respond in time, and the system processing is slow.
Disclosure of Invention
The invention aims to provide a 5g network slicing method for a smart grid, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a5 g network slicing method of a smart grid comprises the following steps:
s1: firstly, performing network slicing on a network of an external terminal by an access, transmission and core network domain slicing enabling system;
s2: then, the network slice identifier and the access system map out a network slice example and a terminal service type, and register the terminal to the correct network slice example;
s3: then the network slice end-to-end management system arranges and manages the end-to-end network slices;
s4: the network slice end-to-end SLA guarantee system can carry out acquisition analysis and quasi real-time processing on network performance indexes of each domain.
Preferably, the network slicing in S1 specifically includes the following steps:
s11: firstly, accessing a terminal network through an access network module;
s12: then the transmission network module carries out bearing transmission on the network accessed by the access network module;
s13: and then the core network module distributes and updates the network slice identification which is transmitted by the transmission network module and can be accessed by the terminal, and the slice access process is completed.
Preferably, the access network module is configured to support slice sensing, slice-based routing, resource isolation, and slice-based flexible resource scheduling, the transmission network module is configured to carry out transmission on a network slice, and the core network module is configured to allocate and update a slice identifier accessible to a terminal, thereby completing main functions of a slice access process and security verification.
Preferably, the network slice identification and access system of S2 includes a slice type module for describing main features and network performance of a slice, and a slice differentiation identifier module for further refining differential slice identification.
Preferably, the orchestration and management in S3 specifically includes lifecycle management of an end-to-end network slice instance, end-to-end cross-domain resource allocation of a slice, and overall policy configuration of a slice.
Preferably, the acquisition analysis and the quasi-real-time processing in S4 specifically include the following steps:
s41: firstly, collecting network slice data of each domain through a data collection module;
s42: visualizing the data in the operation process of the network slice through a visual operation and maintenance module;
s43: and then analyzing the network slice data through a data analysis module, matching with an application layer, and adjusting the network in time according to the current service performance index.
Preferably, the data acquisition module is configured to implement reasonable distribution of network resources and provide guaranteed SLA (service level agreement) guarantees through cooperation of quality assurance technologies of each domain during creation of a network slice; the visual operation and maintenance module is used for providing characteristics of SLA monitoring, statistics, reporting and the like based on tenant granularity by a management surface in the operation process of the network slice; supporting SLA visual management; the data analysis module is used for introducing a closed-loop service guarantee mechanism on the basis of the existing network operation and maintenance and analyzing data.
Preferably, the data analysis module cooperates with the application layer through the predictable QoS and the performance index reported in real time to adjust the network in time according to the current service performance index.
Compared with the prior art, the invention has the beneficial effects that:
the network slicing examples of the access, transmission and core network are realized by taking the access, transmission and core network domain slicing enabling system as a basic supporting technology; mapping between the network slice instance and the terminal service type is realized through the network slice identifier and the access system, and the terminal is registered to the correct network slice instance; the arrangement and management of the end-to-end network slices are realized through a network slice end-to-end management system; the network slice end-to-end SLA guarantee system can collect, analyze and process network performance indexes of each domain in a quasi-real-time manner, and guarantee that the performance of the system meets the SLA requirements of users.
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FIG. 1 is a block diagram of a flow diagram of an access, transport, core network domain slice enabling system of the present invention;
FIG. 2 is a block diagram of the network slice end-to-end SLA assurance system of the present invention;
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.
Referring to fig. 1-2, the present invention provides a technical solution: a5 g network slicing method of a smart grid comprises the following steps:
s1: firstly, performing network slicing on a network of an external terminal by an access, transmission and core network domain slicing enabling system;
s2: then, the network slice identifier and the access system map out a network slice example and a terminal service type, and register the terminal to the correct network slice example;
s3: then the network slice end-to-end management system arranges and manages the end-to-end network slices;
s4: the network slice end-to-end SLA guarantee system can carry out acquisition analysis and quasi real-time processing on network performance indexes of each domain.
Understandably, the access, transmission and core network domain slicing enabling system is used as a basic supporting technology to realize network slicing examples of the access, transmission and core network; the network slice identification and access system realizes the mapping of the network slice examples and the terminal service types and registers the terminal to the correct network slice example; the network slice end-to-end management system realizes the arrangement and management of end-to-end network slices; the network slice end-to-end SLA guarantee technology can carry out acquisition analysis and quasi real-time processing on network performance indexes of each domain, and ensures that the performance of the system meets the SLA requirements of users.
Further, the network slicing in S1 specifically includes the following steps:
s11: firstly, accessing a terminal network through an access network module;
s12: then the transmission network module carries out bearing transmission on the network accessed by the access network module;
s13: and then the core network module distributes and updates the network slice identification which is transmitted by the transmission network module and can be accessed by the terminal, and the slice access process is completed.
Furthermore, the access network module is used for supporting slice sensing, slice-based routing, resource isolation and slice-based flexible resource scheduling, the transmission network module is used for carrying and transmitting network slices, and the core network module is used for allocating and updating slice identifiers accessible to the terminal to complete the main functions of slice access flow and security verification.
It can be understood that the access network module functional design and architecture is based on a service architecture, so that compared with a wireless access network module and a transmission network module, a core network module can more flexibly support network function customization, slice isolation and slice-based resource allocation, and core network management can allocate and update slice identifiers accessible to a terminal to complete the main functions of slice access flow and security verification; the support of the transmission network module on the network slice is based on solving the QoS difference and isolation of various vertical industries, and is realized based on the network resource level slice for bearing transmission according to the flexibility requirement, for example, the delay and jitter requirements of the slice network have certain elasticity, but the strict requirements are within 10ms, and the scheduling soft isolation mode of VLAN and QoS can be considered for support; for network slices with time delay and reliability requirements, a hard-isolation bearer transmission technology can be adopted, such as based on F1exE crossing or OTN; the associated requirements generated by the technical characteristics of the access network module determine the support mode of the access network module for the network slicing, such as the scarce resources (air interface spectrum resources) used by the access network, so that the resource use efficiency requirements are considered in the network slicing technology, and the access network side mainly supports slice sensing, slice-based routing and resource isolation and slice-based flexible resource scheduling.
Further, the network slice identification and access system of S2 includes a slice type module for describing main features and network performance of the slice, and a slice differentiation identifier module for further refining the differential slice identification.
Understandably, the slice type module defines a slice overall architecture that meets isolation requirements in various aspects, such as resource guarantees, security, reliability/availability, and the like, particularly to various technology domains, multiple different resource isolation and sharing modes can be supported to adapt to different levels of performance, functions and isolation requirements, when the network slice identification and access system performs network slice selection, the terminal supports the capability of carrying network slice identifiers in RRC and NAS, the base station supports the capability of selecting the core network function based on the network slice identifiers, a new Network Slice Selection Function (NSSF) is introduced into a core network module and supports the capability of redirecting and selecting other network functions (SMF and the like) by an Access Management Function (AMF), and after the network slice selection is executed, the core network module updates the network slice identifier carried by the terminal.
Further, the arranging and managing in S3 specifically includes that the life cycle management slice instances of the end-to-end network slice instances can be managed by differentiating regions, each slice identifier may correspond to multiple instances according to different needs of the industry, and also includes end-to-end cross-domain resource allocation for slices, and overall policy configuration for slices.
It can be understood that the network slice end-to-end management system is responsible for collecting the communication state information and the process information of each technical domain of the network slice, so that the functions and the resources of the network slice are allocated according to needs, the operation of the whole network is more efficient, and the SLA is managed end to end.
Further, the acquisition analysis and the quasi-real-time processing in S4 specifically include the following steps:
s41: firstly, collecting network slice data of each domain through a data collection module;
s42: visualizing the data in the operation process of the network slice through a visual operation and maintenance module;
s43: and then analyzing the network slice data through a data analysis module, matching with an application layer, and adjusting the network in time according to the current service performance index.
Furthermore, the data acquisition module is used for realizing reasonable distribution of network resources and providing promised SLA guarantee through the cooperation of quality guarantee technologies of all domains in the process of creating the network slice; the visual operation and maintenance module is used for providing characteristics of SLA monitoring, statistics, reporting and the like based on tenant granularity by a management surface in the operation process of the network slice; supporting SLA visual management; the data analysis module is used for introducing a closed-loop service guarantee mechanism on the basis of the existing network operation and maintenance and analyzing data.
Furthermore, the data analysis module is matched with the application layer through the predictable QoS and the performance index reported in real time to adjust the network in time according to the current service performance index.
Specifically, the network slice comprises an access, transmission and core network domain slice enabling system, a network slice identifier and an access system, a network slice end-to-end management system and a network slice end-to-end SLA guarantee system, wherein the transmission and core network domain slice enabling technology is used as a basic supporting technology to realize the network slice examples of the access, transmission and core network, firstly, the access, transmission and core network domain slice enabling system carries out network slicing on the network of an external terminal, the network of the external terminal enters an access network module and a transmission network module and then enters a core network module, as shown in figure 1, the core network module of the slice 1 distributes and updates the network slice identifier which can be accessed by the terminal and transmitted by the transmission network module, the slice is accessed to a low-delay user plane in low-delay session control, the core network module of the slice 2 accesses the slice to a high-bandwidth session control high-bandwidth user plane, wherein the unified physical infrastructure includes computing, network, storage devices, and the like; then the network slice identification and access system maps out the network slice instance and the terminal service type, and registers the terminal to the correct network slice instance, the network slice identification and access system comprises a slice type module and a slice differentiation identifier module, the slice type module is used for describing the main characteristics and network performance of the slice, the slice differentiation identifier module is used for further refining differentiation slice identification, when network slice selection is executed, the terminal supports the capability of carrying network slice identifiers in RRC and NAS, the base station supports the capability of selecting the network function of the core network based on the network slice identifiers, a new Network Slice Selection Function (NSSF) is introduced into the core network and supports the capability of redirecting and selecting other network functions (SMF and the like) by an Access Management Function (AMF), after the network slice selection is executed, the core network module updates the network slice identifier carried by the terminal; then the network slice end-to-end management system arranges and manages the end-to-end network slices, the network slice end-to-end management system can collect the communication state information and the process information of each technical domain of the network slices, thereby allocating the functions and the resources of the network slices as required, leading the operation of the whole network to be more efficient, and managing the SLA end-to-end, the specific functions comprise the life cycle management of the end-to-end network slice examples, the slice examples can be managed by distinguishing regions, each slice identifier can correspond to a plurality of examples according to different requirements of the industry, the slice end-to-end cross-domain resource allocation is responsible, and the whole strategy configuration of the slices is responsible; then the network slice end-to-end SLA guarantee system can collect, analyze and process the network performance indexes of each domain in quasi-real time, on the basis of 5G network slice, it is different from the past telecommunication network, through cooperation, the SLA guarantee is realized, firstly, the data of each domain network slice is collected through the data collection module, in the creation process of network slice, the reasonable distribution of network resource is realized through the cooperation of quality assurance technology of each domain, the committed SLA guarantee is provided based on a certain probability, then the data is visualized in the operation process of network slice through the visible operation and maintenance module, in the operation process of network slice, the management surface provides the SLA monitoring, statistics, reporting and other characteristics based on tenant granularity, and supports SLA visualized management, then the network slice data is analyzed through the data analysis module and matched with the application layer, the network is adjusted in time according to the current service performance index, a closed-loop service guarantee mechanism is introduced on the basis of the existing network operation and maintenance, and the network is matched with an application layer based on the predictable QoS and the performance index reported in real time and is adjusted in time according to the current service performance index.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A5 g network slicing method of a smart grid is characterized by comprising the following steps:
s1: firstly, performing network slicing on a network of an external terminal by an access, transmission and core network domain slicing enabling system;
s2: then, the network slice identifier and the access system map out a network slice example and a terminal service type, and register the terminal to the correct network slice example;
s3: then the network slice end-to-end management system arranges and manages the end-to-end network slices;
s4: the network slice end-to-end SLA guarantee system can carry out acquisition analysis and quasi real-time processing on network performance indexes of each domain.
2. The method of claim 1, wherein the method comprises the following steps: the network slicing in S1 specifically includes the following steps:
s11: firstly, accessing a terminal network through an access network module;
s12: then the transmission network module carries out bearing transmission on the network accessed by the access network module;
s13: and then the core network module distributes and updates the network slice identification which is transmitted by the transmission network module and can be accessed by the terminal, and the slice access process is completed.
3. The method of claim 2, wherein the method comprises the following steps: the access network module is used for supporting slice sensing, slice-based routing, resource isolation and slice-based flexible resource scheduling, the transmission network module is used for carrying and transmitting network slices, and the core network module is used for allocating and updating slice identifiers accessible to the terminal to complete the main functions of slice access flow and security verification.
4. The method of claim 1, wherein the method comprises the following steps: the network slice identification and access system of S2 includes a slice type module for describing the main features and network performance of the slice and a slice differentiation identifier module for further refining the differential slice identification.
5. The method of claim 1, wherein the method comprises the following steps: the orchestration and management in S3 specifically includes lifecycle management of end-to-end network slice instances, end-to-end cross-domain resource allocation of slices, and overall policy configuration of slices.
6. The method of claim 1, wherein the method comprises the following steps: the acquisition analysis and the quasi-real-time processing in the step S4 specifically include the following steps:
s41: firstly, collecting network slice data of each domain through a data collection module;
s42: visualizing the data in the operation process of the network slice through a visual operation and maintenance module;
s43: and then analyzing the network slice data through a data analysis module, matching with an application layer, and adjusting the network in time according to the current service performance index.
7. The method of claim 6, wherein the method comprises the following steps: the data acquisition module is used for realizing reasonable distribution of network resources and providing promised SLA guarantee through the cooperation of quality guarantee technologies of all domains in the process of creating the network slices; the visual operation and maintenance module is used for providing characteristics of SLA monitoring, statistics, reporting and the like based on tenant granularity by a management surface in the operation process of the network slice; supporting SLA visual management; the data analysis module is used for introducing a closed-loop service guarantee mechanism on the basis of the existing network operation and maintenance and analyzing data.
8. The method of claim 6, wherein the method comprises the following steps: the data analysis module is matched with the application layer through the predictable QoS and the performance index reported in real time to adjust the network in time according to the current service performance index.
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