CN113395169B - 5g network slicing method of smart power grid - Google Patents
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- H—ELECTRICITY
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0893—Assignment of logical groups to network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/22—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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H—ELECTRICITY
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- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
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Abstract
The invention discloses a 5g network slicing method of a smart grid, which comprises the following steps: s1: firstly, a network slice is carried out on a network of an external terminal by an access, transmission and core network domain slice enabling system; s2: then the network slice identifier and the access system map out the network slice instance and the terminal service type, and register the terminal to the correct network slice instance, the invention has the beneficial effects that: the network slice examples of the access, transmission and core network are realized by taking an access, transmission and core network domain slice enabling system as a basic supporting technology; mapping 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 end-to-end SLA guarantee system can collect, analyze and process the network performance indexes of each domain in a quasi-real-time manner, and ensure that the performance of the system meets 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 of a smart grid.
Background
Network slicing is an on-demand networking manner, which allows operators to separate multiple virtual end-to-end networks on a unified infrastructure, each of which is logically isolated from the radio access network carrier network to the core network to adapt to various types of applications. In one network slice, the method can be divided into at least three parts of a wireless network sub-slice, a bearing network sub-slice and a core network sub-slice. With the development of the 5G network, the existing network slicing method is not particularly mature for the 5G network, the supporting technical condition is insufficient, the network is difficult to access, meanwhile, the terminal is difficult to connect with the network slicing system, the end-to-end network slicing arrangement management is disordered, the arrangement is difficult, the application data of a user are difficult to respond in time, and the system processing is slow.
Disclosure of Invention
The invention aims to provide a 5g network slicing method of a smart grid, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: a 5g network slicing method of a smart grid, comprising the steps of:
s1: firstly, a network slice is carried out on a network of an external terminal by an access, transmission and core network domain slice enabling system;
s2: then the network slice identifier and the access system map out a network slice instance and a terminal service type, and register the terminal to the correct network slice instance;
s3: then the network slice end-to-end management system arranges and manages the end-to-end network slice;
s4: the network slice end-to-end SLA guarantee system can collect, analyze and process the network performance index of each domain in near real time.
Preferably, the network slice 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 identifiers which are transmitted by the transmission network module and can be accessed by the terminal, and the slice access flow is completed.
Preferably, the access network module is used for supporting perception of slices, routing based on the slices, resource isolation and flexible resource scheduling based on the slices, the transmission network module is used for carrying and transmitting network slices, and the core network module is used for distributing and updating slice identifiers which can be accessed by the terminal to complete the main functions of slice access flow and security check.
Preferably, the network slice identifier and access system of S2 includes a slice type module for describing main features and network performances of the slice and a slice differential identifier module for further refining the differential slice identifier.
Preferably, the arrangement and management in S3 specifically includes lifecycle management of peer-to-peer network slice instances, peer-to-peer cross-domain resource allocation for slices, and overall policy configuration for slices.
Preferably, the collecting analysis and the near real-time processing in S4 specifically include the following steps:
s41: firstly, collecting network slice data of each domain through a data collecting module;
s42: the data is visualized through a visual operation and maintenance module in the running process of the network slice;
s43: and then analyzing the network slice data through a data analysis module, matching with an application layer, and timely adjusting the network according to the current service performance index.
Preferably, the data acquisition module is used for realizing reasonable distribution of network resources and providing promised SLA (service level agreement) assurance through cooperation of quality assurance technologies of all domains in the process of creating the network slice; the visual operation and maintenance module is used for providing the characteristics of SLA monitoring, statistics, reporting and the like based on tenant granularity by a management plane in the running process of the network slice; supporting visual management of SLA; the data analysis module is used for introducing a closed-loop service guarantee mechanism on the basis of the operation and maintenance of the existing network and analyzing the data.
Preferably, the data analysis module adjusts the network according to the current service performance index in time by cooperation of the predictable QoS and the performance index reported in real time and an application layer.
Compared with the prior art, the invention has the beneficial effects that:
the network slice examples of the access, transmission and core network are realized by taking an access, transmission and core network domain slice enabling system as a basic supporting technology; mapping 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 end-to-end SLA guarantee system can collect, analyze and process the network performance indexes of each domain in a quasi-real-time manner, and ensure that the performance of the system meets the SLA requirements of users.
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FIG. 1 is a flow diagram of an access, transport, core network domain slice enabling system of the present invention;
FIG. 2 is a block diagram of a network slice end-to-end SLA provisioning system of the present invention;
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the present invention provides a technical solution: a 5g network slicing method of a smart grid, comprising the steps of:
s1: firstly, a network slice is carried out on a network of an external terminal by an access, transmission and core network domain slice enabling system;
s2: then the network slice identifier and the access system map out a network slice instance and a terminal service type, and register the terminal to the correct network slice instance;
s3: then the network slice end-to-end management system arranges and manages the end-to-end network slice;
s4: the network slice end-to-end SLA guarantee system can collect, analyze and process the network performance index of each domain in near real time.
It can be understood that the access, transmission and core network domain slice enabling system is used as a basic supporting technology to realize network slice examples of the access, transmission and core network; the network slice identifier and the access system realize the mapping between the network slice instance and the terminal service type, and register the terminal to the correct network slice instance; the network slice end-to-end management system realizes the arrangement and management of the end-to-end network slice; the network slice end-to-end SLA guarantee technology can collect, analyze and process the network performance indexes of each domain in a quasi-real-time mode, and ensure that the performance of the system meets the SLA requirements of users.
Further, the network slice 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 identifiers which are transmitted by the transmission network module and can be accessed by the terminal, and the slice access flow is completed.
Further, the access network module is used for supporting perception of slices, routing based on the slices, resource isolation and flexible resource scheduling based on the slices, the transmission network module is used for carrying and transmitting network slices, and the core network module is used for distributing and updating slice identifiers which can be accessed by the terminal to complete the main functions of slice access flow and security check.
As can be appreciated, the functional design and architecture of the access network module are 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 main functions of slice access flow and security verification; the support of the transmission network module for the network slice is based on solving the QoS difference and isolation of various vertical industries, and the transmission network module is realized based on the network resource layer slice for bearing transmission, for example, the delay and jitter requirements of the slice network have certain elasticity, and the strict requirements are not within 10ms, so that the support can be considered by using a scheduling soft isolation mode of VLAN and QoS; network slices for time delay and reliability requirements can adopt a hard-isolated bearer transmission technology, such as a cross-over based on F1exE or OTN (optical transport network) and the like; the association requirement generated by the technical characteristics of the access network module determines the supporting mode of the access network module to the network slice, such as scarce resources (air interface spectrum resources) used by the access network, so that the resource use efficiency requirement is considered in the network slice technology, and the access network side mainly supports slice sensing, slice-based routing and resource isolation and supports flexible resource scheduling based on the slice.
Further, the network slice identifier and access system of S2 includes a slice type module for describing main features and network performances of the slice and a slice differential identifier module for further refining the differential slice identifier.
It can be understood that the slice type module defines a slice overall architecture, which satisfies isolation requirements in aspects of resource guarantee, security, reliability/availability and the like, and specifically supports various different resource isolation and sharing modes to each technical domain so as to adapt to different levels of performance, functions and isolation requirements, when the network slice selection is performed by the network slice identification and access system, the terminal supports the capability of carrying the network slice identification at the RRC and NAS, the base station supports the capability of selecting the network function of the core network based on the network slice identification, a new Network Slice Selection Function (NSSF) is introduced into the core network module, and the capability of redirecting and selecting other network functions (SMF and the like) is supported by the core network module, and after the network slice selection is performed, the network slice identification carried by the terminal is updated by the core network module.
Further, the arranging and managing in S3 specifically includes that the lifecycle management slice instance of the peer-to-peer network slice instance can be managed by distinguishing regions, each slice identifier can correspond to a plurality of instances according to different requirements of industry, and the method further includes end-to-end cross-domain resource allocation of the slice and overall policy configuration of the slice.
It can be understood that the network slice end-to-end management system is responsible for collecting communication state information and process information of each technical domain of the network slice, so that functions and resources of the network slice are allocated as required, the whole network is enabled to operate more efficiently, and the end-to-end management of the SLAs is carried out.
Further, the acquisition analysis and the near real-time processing in S4 specifically include the following steps:
s41: firstly, collecting network slice data of each domain through a data collecting module;
s42: the data is visualized through a visual operation and maintenance module in the running process of the network slice;
s43: and then analyzing the network slice data through a data analysis module, matching with an application layer, and timely adjusting the network according to the current service performance index.
Further, the data acquisition module is used for realizing reasonable distribution of network resources and providing promised SLA (service level agreement) assurance through cooperation of quality assurance technologies of all domains in the process of creating the network slice; the visual operation and maintenance module is used for providing the characteristics of SLA monitoring, statistics, reporting and the like based on tenant granularity by a management plane in the running process of the network slice; supporting visual management of SLA; the data analysis module is used for introducing a closed-loop service guarantee mechanism on the basis of the operation and maintenance of the existing network and analyzing the data.
Furthermore, the data analysis module adjusts the network according to the current service performance index in time through the cooperation of the predictable QoS and the performance index reported in real time and the application layer.
Specifically, the network slice includes an access, transmission, 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, core network domain slice enabling technology is used as a basic supporting technology to realize network slice examples of the access, transmission and core networks, firstly, the network slice enabling system accesses, transmits the network slice of an external terminal, the network of the external terminal enters an access network module and a transmission network module and then enters the core network module, as shown in fig. 1, the core network module of slice 1 allocates and updates the network slice identifier which is transmitted by the transmission network module and is accessible by the terminal, a session is controlled to a low-delay user plane when the slice is accessed to a low-delay user plane, and the core network module of slice 2 accesses the slice to a high-bandwidth session control high-bandwidth user plane, wherein unified physical infrastructure comprises calculation, network, storage equipment and the like; then the network slice identifier and the access system map out the network slice instance and the terminal service type, register the terminal to the correct network slice instance, the network slice identifier and the access system comprise 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 the differentiation slice identifier, when the network slice selection is executed, the terminal supports the capability of carrying the network slice identifier on RRC and NAS, the base station supports the capability of selecting the network function of the core network based on the network slice identifier, the new Network Slice Selection Function (NSSF) is introduced into the core network, the Access Management Function (AMF) is supported, the redirection and other network function (SMF) and other capabilities are supported, and after the network slice selection is executed, the network slice identifier carried by the terminal is updated by the core network module; the network slice end-to-end management system is used for arranging and managing end-to-end network slices, the network slice end-to-end management system can collect communication state information and process information of each technical field of the network slices, so that functions and resources of the network slices are allocated as required, the whole network is enabled to operate more efficiently, the SLA is managed end-to-end, specific functions comprise life cycle management of responsible end-to-end network slice examples, the slice examples can be managed in different regions, each slice identifier can correspond to a plurality of examples according to different requirements of industries, end-to-end cross-domain resource allocation of the slices is responsible, and overall strategy allocation of the slices is responsible; the network slice end-to-end SLA guarantee system can collect, analyze and quasi-real-time process the network performance index of each domain, on the basis of 5G network slice, different from the past telecommunication network, realize SLA guarantee by cooperation, firstly collect the network slice data of each domain by the data collection module, in the process of creating the network slice, realize reasonable distribution of network resources by the cooperation of the quality assurance technology of each domain, provide promised SLA assurance based on a certain probability, then visually process the data in the running process of the network slice by the visual operation and maintenance module, in the running process of the network slice, the management plane provides the characteristics of SLA monitoring, statistics, reporting and the like based on tenant granularity, supports the visual management of SLA, then analyzes the network slice data through a data analysis module, cooperates with an application layer, timely adjusts the network according to the current service performance index, introduces a closed-loop service guarantee mechanism on the basis of the current network operation and maintenance, and cooperates with the application layer to timely adjust the network according to the current service performance index based on the predictable QoS and the performance index reported in real time.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A5 g network slicing method of a smart grid is characterized by comprising the following steps:
s1: firstly, a network slice is carried out on a network of an external terminal by an access, transmission and core network domain slice enabling system;
s2: then the network slice identifier and the access system map out a network slice instance and a terminal service type, and register the terminal to the correct network slice instance;
s3: then the network slice end-to-end management system arranges and manages the end-to-end network slice;
s4: the network slice end-to-end SLA guarantee system performs acquisition analysis and quasi-real-time processing on network performance indexes of each domain;
the step of performing network slicing on the network of the external terminal in the step 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: then the core network module distributes and updates the network slice identifier which is transmitted by the transmission network module and can be accessed by the terminal, and the slice access is completed;
the access network module is used for supporting the perception of the slice, the routing based on the slice, the resource isolation and the resource scheduling based on the slice, the transmission network module is used for carrying and transmitting the network slice, and the core network module is used for distributing and updating the slice identifier which can be accessed by the terminal to finish the slice access flow and the security check;
the network slice identification and access system of the S2 comprises a slice type module and a slice differentiation identifier module, wherein the slice type module is used for describing main characteristics and network performances of slices, and the slice differentiation identifier module is used for refining the differentiation slice identification;
the arrangement and management in the S3 specifically comprises life cycle management of opposite end-to-end network slice examples, end-to-end cross-domain resource allocation of the slices and overall strategy configuration of the slices;
the acquisition analysis and the near real-time processing in the S4 specifically comprise the following steps:
s41: firstly, collecting network slice data of each domain through a data collecting module;
s42: the data is visualized through a visual operation and maintenance module in the running process of the network slice;
s43: then analyzing the network slice data through a data analysis module, matching with an application layer, and timely adjusting the network according to the current service performance index;
the data acquisition module is used for realizing network resource allocation and providing promised SLA (service level agreement) assurance through the cooperation of quality assurance technologies of all domains in the process of creating the network slice; the visual operation and maintenance module is used for providing SLA monitoring, statistics and reporting based on tenant granularity by a management plane in the running process of the network slice; supporting visual management of SLA; the data analysis module is used for introducing a closed-loop service guarantee mechanism based on network operation and maintenance and analyzing data;
the data analysis module cooperates with the application layer through the predictable QoS and the performance index reported in real time, and adjusts the network according to the current service performance index in time.
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| CN111869161A (en) * | 2018-03-19 | 2020-10-30 | 华为技术有限公司 | End-to-end network slicing to support third party functionality |
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