Slice Analysis Method for Bearer Network

Abstract

The present invention provides a slice analysis method for a bearer network, comprising: receiving an orchestration scheme of a network slice generated by a bearer network slice subnet management system TN‑NSSMF based on a basic network topology and delay information of the bearer network, wherein the basic network topology and delay information are updated based on delay indicator data obtained through monitoring; performing basic delay verification on the orchestration scheme based on a basic delay between source and destination nodes in the orchestration scheme and an SLA delay requirement of the network slice; if the verification passes, sequentially configuring static network resources and business slice resources of the network slice based on the orchestration scheme, and monitoring the delay indicator data of the static network resources and the business slice resources, thereby solving the problem of scientifically and reasonably decomposing the delay indicator in the SLA of the end-to-end network slice, and realizing the delay indicator decomposition of the end-to-end network slice and the delay indicator setting in the bearer network sub-slice template.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and in particular to a slice analysis method for a bearer network. Background Art

[0002] As 5G network deployment accelerates, the importance of 5G bearer network slice management and control becomes increasingly prominent. 5G end-to-end network slicing involves the coordinated orchestration, deployment, monitoring and maintenance of three subdomain resources: 5G core network, wireless access network and bearer network. The management requirements covering the entire life cycle are proposed for the control capabilities of each professional subnet and the collaborative orchestration capabilities across professional subnets.

[0003] At present, the full life cycle management process of 5G end-to-end network slices includes: NSMF (Network Slice Management Function) receives a network slice creation or allocation request from CSMF (Communication Service Management Function), and the request message includes the network slice deployment requirements. NSMF decomposes the network slice deployment requirements into three slice subnet deployment requirements for wireless, bearer, and core networks. NSMF allocates and uses slice docking identifiers, such as VLAN IDs, for bearer network service docking. For TN (Transport Network) slice subnets, TN-NSSMF (Transport Network-Network Slice Subnet Management Function) completes the decomposition and configuration of SLA (Service Level Agreement) indicators within the bearer slice subnet and the docking configuration with AN (Access Network) / CN (Core Network) slice subnets according to the slice subnet deployment requirements and slice docking identifiers. SLA indicators mainly include network parameters such as bandwidth, latency, and reliability.

[0004] However, the NSMF, TN NSSMF and TN networks do not support the automated deployment of bearer network slices through standard northbound interfaces. The SLA indicator decomposition of 5G end-to-end network slices lacks a systematic and effective method, and does not support dynamic deployment and intelligent monitoring and analysis methods for SLA parameters such as latency. Summary of the invention

[0005] The present invention provides a slice analysis method for a bearer network, which is used to solve the defect that it is difficult to scientifically and reasonably decompose the delay indicator in the SLA of the end-to-end network slice in the prior art, and realizes the delay indicator decomposition of the end-to-end network slice and the delay indicator setting in the bearer network sub-slice template.

[0006] The present invention provides a slice analysis method for a bearer network, comprising:

[0007] Receive the network slice orchestration plan generated by the bearer network slice subnet management system TN-NSSMF based on the basic network topology and latency information of the bearer network, where the basic network topology and latency information are updated based on the latency indicator data obtained through monitoring;

[0008] Based on the basic delay between the source and sink nodes in the orchestration scheme and the SLA delay requirement of the network slice, perform basic delay verification on the orchestration scheme;

[0009] If the verification passes, the static network resources and business slice resources of the network slice are configured sequentially based on the orchestration plan, and the latency indicator data of the static network resources and the business slice resources are monitored.

[0010] According to a bearer network slice analysis method provided by the present invention, the receiving bearer network slice subnet management system TN-NSSMF generates a network slice orchestration scheme based on the basic network topology and latency information of the bearer network, and also includes:

[0011] Acquire the basic network topology;

[0012] Monitoring the link delay of each point-to-point in the basic network topology;

[0013] Delay information of the basic network topology is determined based on a typical value of a forwarding delay of each node in the basic network topology and a delay of each point-to-point link.

[0014] According to a slice analysis method of a bearer network provided by the present invention, the static network resources and service slice resources of the network slice are sequentially configured based on the orchestration scheme, and the latency index data of the static network resources and the service slice resources are monitored, including:

[0015] Configure the static network resources of the network slice based on the orchestration scheme, and enable the unidirectional or bidirectional delay measurement function of the static network resources based on the SLA delay requirement to obtain delay indicator data of the static network resources;

[0016] After the static network resource configuration is completed, the business slice resources of the network slice are configured based on the orchestration plan, and the unidirectional or bidirectional delay measurement function of the business slice resources is enabled based on the SLA delay requirements to obtain the delay indicator data of the business slice resources.

[0017] According to a slice analysis method of a bearer network provided by the present invention, the static network resources and service slice resources of the network slice are sequentially configured based on the orchestration scheme, and the latency indicator data of the static network resources and the service slice resources are monitored, and then the method further includes:

[0018] Entering the monitored delay index data into the delay performance index database;

[0019] Performing a delay performance indicator analysis based on the delay performance indicator database to obtain an analysis result;

[0020] The analysis result is sent to the TN-NSSMF, so that the TN-NSSMF updates the SLA delay parameter of the scheduling plan based on the analysis result.

[0021] According to a slice analysis method of a bearer network provided by the present invention, the basic delay verification of the orchestration scheme is performed based on the basic delay between the source and sink nodes in the orchestration scheme and the SLA delay requirement of the network slice, and then further includes:

[0022] If the verification fails, delay verification failure information is generated and sent to the TN-NSSMF, and the delay verification failure information is transmitted to the network slice management system NSMF through the TN-NSSMF.

[0023] The present invention also provides a slice analysis method for a bearer network, comprising:

[0024] Generate an orchestration plan for network slicing based on the basic network topology and latency information of the bearer network, where the basic network topology and latency information are updated by the slice packet network SPN based on latency indicator data obtained through monitoring;

[0025] The orchestration plan of the network slice is sent to the SPN, so that the SPN can perform basic delay verification on the orchestration plan based on the basic delay between the source and destination nodes in the orchestration plan and the SLA delay requirement of the network slice, and after the verification, sequentially configure the static network resources and business slice resources of the network slice based on the orchestration plan, and monitor the delay indicator data of the static network resources and the business slice resources.

[0026] According to a slice analysis method of a bearer network provided by the present invention, the generation of an orchestration scheme of network slices based on the basic network topology and latency information of the bearer network includes:

[0027] Receiving the basic network topology and latency information of the bearer network sent by the SPN;

[0028] Receive a planning and configuration request for a network slice sent by a network slice management system NSMF, where the planning and configuration request carries the SLA latency requirement of the network slice;

[0029] Based on the SLA latency requirements, as well as the basic network topology of the bearer network and its latency information, an orchestration plan for the network slice is generated.

[0030] According to a bearer network slice analysis method provided by the present invention, the orchestration scheme of the network slice is sent to the SPN, and then the method further includes:

[0031] Receiving an analysis result sent by the SPN, where the analysis result is obtained by the SPN performing a delay performance indicator analysis based on a delay performance indicator database, where the delay performance indicator database is constructed based on delay indicator data obtained through monitoring;

[0032] Based on the analysis result, the SLA delay parameter of the orchestration solution is updated.

[0033] According to a bearer network slice analysis method provided by the present invention, the receiving of the analysis result sent by the SPN further includes:

[0034] The analysis result is sent to the NSMF, so that the NSMF updates the SLA delay requirement based on the analysis result.

[0035] According to a bearer network slice analysis method provided by the present invention, the orchestration scheme of the network slice is sent to the SPN, and then the method further includes:

[0036] Delay verification failure information generated and sent after receiving basic delay verification failure;

[0037] The delay verification failure information is forwarded to NSMF.

[0038] The slice analysis method of the bearer network provided by the present invention adopts an active monitoring and analysis method of layered delay indicators, combined with the SLA performance indicator monitoring data of each layer of network resources, and proposes an effective method for enabling real-time monitoring of accurate delay of layered resources in the bearer network and using it for end-to-end delay decomposition in SLA. It solves the problem of scientific and reasonable decomposition of delay indicators in the SLA of end-to-end network slices, and realizes the delay indicator decomposition of end-to-end network slices and the delay indicator setting in the bearer network sub-slice template. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 It is one of the flow diagrams of the slicing analysis method of the bearer network provided by the present invention;

[0041] Figure 2 It is a schematic diagram of the 5G end-to-end network slicing architecture provided by the present invention;

[0042] Figure 3 It is a schematic diagram of the management and control architecture of the bearer network slice subnet provided by the present invention;

[0043] Figure 4 This is the second flow chart of the slice analysis method of the bearer network provided by the present invention;

[0044] Figure 5 It is a hierarchical monitoring and analysis diagram of SPN network slice resources provided by the present invention;

[0045] Figure 6 It is an overall flow chart of the slice analysis method of the bearer network provided by the present invention;

[0046] Figure 7 It is one of the structural schematic diagrams of the slice analysis device of the bearer network provided by the present invention;

[0047] Figure 8 This is the second structural schematic diagram of the slice analysis device for the bearer network provided by the present invention;

[0048] Fig. 9 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] At present, 5G end-to-end network slicing has the following problems in SLA indicator decomposition and operation and maintenance monitoring:

[0051] During the planning and deployment phase of network slicing, the scientific and effective method of decomposing the SLA parameters of end-to-end network slicing into wireless networks, bearer networks, and core networks has become a major difficulty in implementing them on an existing network scale. First, there is a lack of a systematic and effective scientific modeling method for end-to-end SLA indicators; second, there is a lack of a method for reasonably decomposing and selecting indicators according to the characteristics of the three sub-domain networks.

[0052] The latency indicator data of the bearer network slice subnet is closely related to the actual network scale of the bearer network and the specific configuration plan of the slice resources. Especially in the scenarios of industrial production line control and Internet of Vehicles, the end-to-end latency indicator decomposition of the network slice for uRLLC services, which are very sensitive to low latency, is currently implemented by static manual configuration and manual experience-based value selection. This manual experience-based value selection method based on experience and best efforts cannot accurately evaluate whether the latency indicator requirements of 5G network slices can provide corresponding performance guarantees within the bearer network subdomain. Therefore, it is urgent to improve the bearer network and its management and control system to provide differentiated services and monitoring and analysis capabilities based on SLA indicator parameters. Third, the static manual method has low configuration efficiency and activation timeliness, which is not suitable for the market competition and rapid activation needs of future operators' 5G end-to-end network slice scale commercial deployment.

[0053] In the operation and maintenance stage of network slicing, TN and TN-NSSMF lack the automated deployment and hierarchical dynamic monitoring and analysis methods for network slicing SLA indicator monitoring OAM (Operation Administration and Maintenance). At present, for the SLA indicator monitoring requirements of the bearer network slices issued by NSMF, TN-NSSMF adopts a static manual configuration mode and cannot realize the automated deployment of monitoring instances. The deployment method of the monitoring instance also does not meet the latency monitoring capabilities based on different levels such as nodes, links, and tunnels. It is impossible to complete the correction and improvement of the SLA parameters in the initial configuration template of the network slice by fully monitoring the operating status of the network slice, and cannot meet the intelligent operation and maintenance management needs of the entire life cycle of 5G end-to-end network slices.

[0054] In view of the above problems, the present invention provides a slice analysis method for a bearer network. Figure 1 It is one of the flow charts of the slicing analysis method of the bearer network provided by the present invention, such as Figure 1 As shown, the execution subject of the method can be a SPN (Slicing Packet Network) or an OMC (Operation and Maintenance Center), and the method includes:

[0055] Step 110, receive the network slice orchestration plan generated by the bearer network slice subnet management system TN-NSSMF based on the basic network topology and latency information of the bearer network, and the basic network topology and latency information are updated based on the latency indicator data obtained through monitoring.

[0056] Here, the bearer network slice subnet management system TN-NSSMF and the bearer network are components of the 5G network slice framework. Among them, the 5G network slice is an end-to-end logical dedicated network that provides specific network capabilities. It consists of sub-network slice instances of wireless, bearer and core networks, and implements end-to-end slice management through the network slice management function.

[0057] Figure 2 is a schematic diagram of the 5G end-to-end network slicing architecture provided by the present invention, Figure 3 Schematic diagram of the management and control architecture of the bearer network slice subnet provided by the present invention, such as Figure 2 and Figure 3 As shown in the figure, the 5G end-to-end network slicing framework consists of two parts: the network slicing management domain and the network slicing service domain. Among them, the 5G end-to-end network slicing management domain consists of the communication service management function CSMF, the network slicing management function NSMF, and the network slicing subnet management function NSSMF; among them, the network slicing subnet management function NSSMF includes the radio access network slicing subnet management function AN-NSSMF, the bearer network slicing subnet management function TN-NSSMF and the core network slicing subnet management function CN-NSSMF. The 5G end-to-end network slicing service domain mainly includes the terminal user UE, the radio access network (R) AN, the bearer network TN, the core network CN, and the data network DN subdomains.

[0058] Specifically, the latency indicator data obtained through monitoring is updated, and the basic network topology and latency information of the bearer network are obtained based on the updated latency indicator data. In the initial planning and configuration phase of network slicing, the network slicing management system NSMF sends an end-to-end network slicing planning and configuration request to the bearer network slicing subnet management system TN-NSSMF. The planning and configuration request carries the SLA latency requirements of the network slicing. The SLA latency requirements of the network slicing include bandwidth, latency, reliability, isolation, etc.

[0059] Furthermore, after the bearer network slice subnet management system TN-NSSMF receives the network slice planning and configuration request issued by the network slice management system NSMF, it orchestrates the physical routing and sub-slice configuration template of the network slice within the TN domain according to the SLA latency requirements of the network slice carried in the planning and configuration request and the basic network topology and latency information of the bearer network, and the sub-slice configuration template includes SLA parameters.

[0060] The physical routing and sub-slice configuration template of the orchestrated network slice is used to generate the orchestration plan of the network slice, and the orchestration plan of the network slice is sent to the slice packet network SPN, and the SPN executes step 120.

[0061] Step 120: Perform basic delay verification on the orchestration scheme based on the basic delay between the source and destination nodes in the orchestration scheme and the SLA delay requirement of the network slice.

[0062] Here, the basic delay between the source and sink nodes is the time required to transmit data from the starting node to the ending node.

[0063] Specifically, the SPN receives the orchestration scheme of the network slice sent by the bearer network slice subnet management system, and performs basic delay verification on the generated orchestration scheme according to the basic delay between the source and destination nodes in the orchestration scheme and the SLA delay requirements of the network slice. Among them, the basic delay verification of the orchestration scheme can be to verify whether the basic delay between the source and destination nodes involved in the network slice in the orchestration scheme is less than the maximum delay index requirement in the SLA delay requirements of the network slice, or to verify whether the basic delay between the source and destination nodes involved in the network slice in the orchestration scheme is greater than the minimum delay index requirement in the SLA delay requirements of the network slice, or to verify whether the basic delay between the source and destination nodes involved in the network slice in the orchestration scheme meets all the SLA delay requirements of the network slice, which is not specifically limited in the embodiments of the present invention.

[0064] If the basic delay verification of the scheduling plan passes, step 130 is executed.

[0065] Accordingly, if the basic delay verification of the orchestration scheme fails, step 130 is not performed.

[0066] Step 130: If the verification passes, the static network resources and business slice resources of the network slice are sequentially configured based on the orchestration plan, and the latency indicator data of the static network resources and the business slice resources are monitored.

[0067] Specifically, if the basic latency verification of the orchestration scheme is confirmed to be passed, the static network resources of the network slice are configured according to the orchestration scheme, and the latency indicator data of the static network resources are monitored. The static network resources can be the MTN interface of the SPN network, which is the FlexE interface in the IP network; or the MTN channel, which is the slice Ethernet channel of the SPN; or the MTN interface and the MTN channel, which are not specifically limited in the embodiment of the present invention.

[0068] Furthermore, after the static network resource configuration is completed, the service slice resources of the network slice are configured according to the orchestration plan, and the latency indicator data of the service slice resources are monitored. The service slice resources can be the SP-TR packet tunnel and L3VPN of the SPN network; they can also be the SRv6 and VPN services of the IP network, etc., which are not specifically limited in the embodiment of the present invention.

[0069] The slice analysis method of the bearer network provided by the present invention adopts an active monitoring and analysis method of layered delay indicators, combined with the SLA performance indicator monitoring data of each layer of network resources, and proposes an effective method for enabling real-time monitoring of accurate delay of layered resources in the bearer network and using it for end-to-end delay decomposition in SLA. It solves the problem of scientific and reasonable decomposition of delay indicators in the SLA of end-to-end network slices, and realizes the delay indicator decomposition of end-to-end network slices and the delay indicator setting in the bearer network sub-slice template.

[0070] Based on the above embodiment, in step 110, the orchestration scheme of the network slice generated by the bearer network sub-slice management system TN-NSSMF based on the basic network topology and latency information of the bearer network is received, and the following is also included before:

[0071] Acquire the basic network topology;

[0072] Monitoring the link delay of each point-to-point in the basic network topology;

[0073] Delay information of the basic network topology is determined based on a typical value of a forwarding delay of each node in the basic network topology and a delay of each point-to-point link.

[0074] Here, the basic network topology can be obtained through physical links. Specifically, at the beginning of the deployment of the SPN network, the LLDP (Link Layer Discovery Protocol) protocol of the physical link and the BGP-LS protocol of the management and control are used to realize the automatic discovery and topology collection and reporting of the physical topology of the SPN network, thereby obtaining the basic network topology of the SPN network. The bearer network management and control system completes all basic protocols and parameter configurations of the network, including OSPF (Open Shortest Path First), IS-IS (Intermediate System-to-Intermediate System) protocol, IEEE 1588V2 (Network Precision Timing Protocol), segment layer OAM (Operation Administration and Maintenance) or TWAMP (Two-Way Active Measurement Protocol) protocol, etc.

[0075] Furthermore, the bearer network management and control system monitors and obtains the delay of each point-to-point link in the basic network topology through IEEE 1588V2, segment layer OAM or TWAMP protocol, and obtains the typical value of forwarding delay of each type of SPN equipment (UPE / SPE / XPE / NPE) and P / PE single node, and then determines the delay information of the basic network topology based on the typical value of forwarding delay of each node in the basic network topology and the delay of each point-to-point link.

[0076] Based on the above embodiment, step 130 includes:

[0077] Configure the static network resources of the network slice based on the orchestration scheme, and enable the unidirectional or bidirectional delay measurement function of the static network resources based on the SLA delay requirement to obtain delay indicator data of the static network resources;

[0078] After the static network resource configuration is completed, the business slice resources of the network slice are configured based on the orchestration plan, and the unidirectional or bidirectional delay measurement function of the business slice resources is enabled based on the SLA delay requirements to obtain the delay indicator data of the business slice resources.

[0079] Specifically, static network resources of the network slice are configured according to the orchestration plan. The static network resources can be the MTN interface of the SPN network, where the MTN interface is the FlexE interface in the IP network; or the MTN channel, where the MTN channel is the sliced ​​Ethernet channel of the SPN; or the MTN interface and the MTN channel, which are not specifically limited in the embodiments of the present invention.

[0080] According to the SLA delay requirements, enable the one-way or two-way delay measurement OAM function of static network resources, monitor the delay index data of static network resources in real time, and obtain the delay index data of static network resources.

[0081] Furthermore, after the static network resource configuration is completed, the service slice resources of the network slice are configured according to the orchestration plan. The service slice resources can be the SP-TR packet tunnel and L3VPN of the SPN network; they can also be the SRv6 and VPN services of the IP network, etc. The embodiment of the present invention does not make specific limitations on this.

[0082] According to the SLA latency requirements, enable the one-way or two-way latency measurement OAM function of the service slice resources, monitor the latency indicator data of the service slice resources in real time, and obtain the latency indicator data of the service slice resources.

[0083] Based on the above embodiment, in step 130, the static network resources and the service slice resources of the network slice are sequentially configured based on the orchestration scheme, and the latency indicator data of the static network resources and the service slice resources are monitored, and then the following is further included:

[0084] Entering the monitored delay index data into the delay performance index database;

[0085] Performing a delay performance indicator analysis based on the delay performance indicator database to obtain an analysis result;

[0086] The analysis result is sent to the TN-NSSMF, so that the TN-NSSMF updates the SLA delay parameter of the scheduling plan based on the analysis result.

[0087] The delay performance indicator database here is constructed based on the delay performance indicator data, and the delay performance indicator data is obtained through the one-way or two-way delay measurement function monitoring of static network resources and business slice resources.

[0088] Specifically, a delay performance indicator database constructed based on the delay performance indicator data is analyzed for delay performance indicators, and the analysis results are obtained and sent to the bearer network slice subnet management system TN-NSSMF. There are multiple ways to analyze the delay performance indicators of the delay performance indicator database.

[0089] For example, the sandbox system of the SPN network intelligent simulation analysis extracts and analyzes the latency indicator monitoring data of the physical layer, L1 interface and channel layer, L2 / L3 tunnel and service layer from the latency performance indicator database, and combines several typical slice configuration templates of the SPN network to carry out AI machine learning and modeling analysis of the latency data, and outputs the maximum latency performance indicator data obtained from the analysis to the sub-slice configuration template of the bearer network.

[0090] Furthermore, after receiving the analysis results sent by SPN, the bearer network slice subnet management system TN-NSSMF updates the SLA delay parameters included in the sub-slice configuration template of the network slice in the orchestration plan according to the received analysis results.

[0091] For example, the maximum delay performance indicator data in the sub-slice configuration template output to the bearer network is fed back to the TN-NSSMF to support the TN-NSSMF in optimizing and updating the SLA delay parameters contained in the sub-slices of the bearer network.

[0092] The slice analysis method of the bearer network provided by the present invention dynamically constructs a delay performance indicator database based on the delay indicator data obtained by monitoring the delay performance of the layered resources of the bearer network slice, performs delay performance indicator analysis on the delay performance indicator database, and updates the SLA delay parameters of the orchestration scheme according to the analysis results, thereby realizing the dynamic planning and intelligent simulation analysis of the SLA delay parameters in the sub-slice configuration template of the bearer network. Based on the above embodiment, in step 120, based on the basic delay between the source and sink nodes in the orchestration scheme and the SLA delay requirements of the network slice, the basic delay verification of the orchestration scheme is performed, and then it also includes:

[0093] If the verification fails, delay verification failure information is generated and sent to the TN-NSSMF, and the delay verification failure information is transmitted to the network slice management system NSMF through the TN-NSSMF.

[0094] Specifically, if it is confirmed that the basic delay verification of the orchestration plan has failed, delay verification failure information is generated and the verification failure information is sent to the bearer network slice subnet pipeline system TN-NSSMF. TN-NSSMF receives the delay verification failure information and forwards the delay verification failure information to the network slice management system NSMF.

[0095] The slice analysis method of the bearer network provided by the present invention proposes that the bearer network management and control system actively monitors and analyzes and reports the latency indicators in various typical bearer sub-slice configuration templates to TN-NSSMF and NSMF, and adopts an innovative method from bottom to top to promote TN-NSSMF and NSMF to dynamically establish and maintain different types of bearer network sub-slice configuration templates. Through the dynamic acquisition and regular updating of latency indicators, an intelligent monitoring and dynamic planning method for latency indicators in the bearer network sub-slice configuration template is established, thereby supporting the dynamic planning and automated deployment functions of end-to-end network slicing.

[0096] Figure 4 FIG. 2 is a flow chart of the slice analysis method of the bearer network provided by the present invention. Figure 4 As shown, the execution subject of the method is the bearer network slice subnet management system TN-NSSMF, and the method includes:

[0097] Step 410, generating an orchestration scheme for network slicing based on the basic network topology and latency information of the bearer network, wherein the basic network topology and latency information are updated by the slice packet network SPN based on latency indicator data obtained through monitoring;

[0098] Here, the basic network topology can be obtained through the physical link. Taking the SPN network as an example, at the beginning of the deployment of the SPN network, the physical link LLDP (Link Layer Discovery Protocol) protocol and the control BGP-LS protocol are used to realize the automatic discovery and topology collection and reporting of the SPN network physical topology, thereby obtaining the basic network topology of the SPN network. The bearer network control system completes all basic network protocols and parameter configurations, including OSPF (Open Shortest Path First), IS-IS (Intermediate System-to-Intermediate System), IEEE 1588V2 (Network Precision Timing Protocol), segment layer OAM (Operation Administration and Maintenance) or TWAMP (Two-Way Active Measurement Protocol) protocol, etc.

[0099] Furthermore, the bearer network management and control system monitors and obtains the delay of each point-to-point link in the basic network topology through IEEE 1588V2, segment layer OAM or TWAMP protocol, and obtains the typical value of forwarding delay of each type of SPN equipment (UPE / SPE / XPE / NPE) and P / PE single node, and then determines the delay information of the basic network topology based on the typical value of forwarding delay of each node in the basic network topology and the delay of each point-to-point link.

[0100] Specifically, based on the basic network topology and latency information of the acquired bearer network, an orchestration scheme for network slicing is generated, which includes the physical routing and sub-slice configuration template of the network slice, and the sub-slice configuration template includes SLA parameters. Among them, the basic network topology and latency information are obtained by updating the latency indicator data obtained by monitoring by the slice packet network SPN.

[0101] Step 420, sending the orchestration plan of the network slice to the SPN, so that the SPN can perform basic delay verification on the orchestration plan based on the basic delay between the source and destination nodes in the orchestration plan and the SLA delay requirement of the network slice, and after the verification, sequentially configure the static network resources and business slice resources of the network slice based on the orchestration plan, and monitor the delay indicator data of the static network resources and the business slice resources.

[0102] Here, the basic delay between the source and sink nodes is the time required to transmit data from the starting node to the ending node.

[0103] Specifically, the generated orchestration scheme of the network slice is sent to the slice packet network SPN. The SPN receives the orchestration scheme of the network slice sent by the bearer network slice subnet management system, and performs basic delay verification on the generated orchestration scheme according to the basic delay between the source and destination nodes in the orchestration scheme and the SLA delay requirements of the network slice. Among them, the basic delay verification of the orchestration scheme can be to verify whether the basic delay between the source and destination nodes involved in the network slice in the orchestration scheme is less than the maximum delay index requirement in the SLA delay requirements of the network slice, or to verify whether the basic delay between the source and destination nodes involved in the network slice in the orchestration scheme is greater than the minimum delay index requirement in the SLA delay requirements of the network slice, or to verify whether the basic delay between the source and destination nodes involved in the network slice in the orchestration scheme meets all the SLA delay requirements of the network slice, which is not specifically limited in the embodiments of the present invention.

[0104] If the basic latency verification of the orchestration scheme passes, the static network resources of the network slice are configured according to the orchestration scheme, and the latency index data of the static network resources are monitored. The static network resources can be the MTN interface of the SPN network, which is the FlexE interface in the IP network; or the MTN channel, which is the slice Ethernet channel of the SPN; or the MTN interface and the MTN channel, which are not specifically limited in the embodiment of the present invention.

[0105] Furthermore, after the static network resource configuration is completed, the service slice resources of the network slice are configured according to the orchestration plan, and the latency indicator data of the service slice resources are monitored. The service slice resources can be the SP-TR packet tunnel and L3VPN of the SPN network; they can also be the SRv6 and VPN services of the IP network, etc., which are not specifically limited in the embodiment of the present invention.

[0106] The slice analysis method of the bearer network provided by the present invention adopts an active monitoring and analysis method of layered delay indicators, combined with the SLA performance indicator monitoring data of each layer of network resources, and proposes an effective method for enabling real-time monitoring of accurate delay of layered resources in the bearer network and using it for end-to-end delay decomposition in SLA. It solves the problem of scientific and reasonable decomposition of delay indicators in the SLA of end-to-end network slices, and realizes the delay indicator decomposition of end-to-end network slices and the delay indicator setting in the bearer network sub-slice template.

[0107] Based on the above embodiment, step 410 includes:

[0108] Receiving the basic network topology and latency information of the bearer network sent by the SPN;

[0109] Receive a planning and configuration request for a network slice sent by a network slice management system NSMF, where the planning and configuration request carries the SLA latency requirement of the network slice;

[0110] Based on the SLA latency requirements, as well as the basic network topology of the bearer network and its latency information, an orchestration plan for the network slice is generated.

[0111] Specifically, the bearer network slice subnet management system TN-NSSMF receives the basic network topology and latency information of the bearer network sent by SPN and the network slice management system NSMF in the initial planning and configuration stage of the network slice, and sends an end-to-end network slice planning and configuration request to the bearer network slice subnet management system TN-NSSMF, and the planning and configuration request carries the SLA latency requirements of the network slice. Among them, the SLA latency requirements of the network slice include bandwidth, latency, reliability, isolation, etc.

[0112] Furthermore, the bearer network slice subnet management system TN-NSSMF orchestrates the physical routing and sub-slice configuration templates of the network slices in the TN domain according to the SLA latency requirements of the network slices carried in the planning configuration request and the basic network topology and latency information of the bearer network. The sub-slice configuration templates contain SLA parameters. The physical routing and sub-slice configuration templates of the orchestrated network slices are used to generate the orchestration plan for the network slices.

[0113] Based on the above embodiment, in step 420, the orchestration scheme of the network slice is sent to the SPN, and then the following steps are further included:

[0114] Receiving an analysis result sent by the SPN, where the analysis result is obtained by the SPN performing a delay performance indicator analysis based on a delay performance indicator database, where the delay performance indicator database is constructed based on delay indicator data obtained through monitoring;

[0115] Based on the analysis result, the SLA delay parameter of the orchestration solution is updated.

[0116] The delay performance indicator database here is constructed based on the delay performance indicator data, and the delay performance indicator data is obtained through the one-way or two-way delay measurement function monitoring of static network resources and business slice resources.

[0117] Specifically, the analysis result received by the bearer network slice subnet management system TN-NSSMF from the SPN is obtained by performing a delay performance index analysis on a delay performance index database constructed based on the delay performance index data. There are multiple ways to perform a delay performance index analysis on the delay performance index database.

[0118] For example, the sandbox system of the SPN network intelligent simulation analysis extracts and analyzes the latency indicator monitoring data of the physical layer, L1 interface and channel layer, L2 / L3 tunnel and service layer from the latency performance indicator database, and combines several typical slice configuration templates of the SPN network to carry out AI machine learning and modeling analysis of the latency data, and outputs the maximum latency performance indicator data obtained from the analysis to the sub-slice configuration template of the bearer network.

[0119] Furthermore, based on the received analysis results, the SLA delay parameters included in the sub-slice configuration template of the network slice in the orchestration scheme are updated.

[0120] For example, the maximum delay performance indicator data in the sub-slice configuration template output to the bearer network is fed back to the TN-NSSMF to support the TN-NSSMF in optimizing and updating the SLA delay parameters contained in the sub-slices of the bearer network.

[0121] The slice analysis method of the bearer network provided by the present invention dynamically constructs a delay performance indicator database based on the delay indicator data obtained from the delay performance monitoring of the layered resources of the bearer network slice, performs delay performance indicator analysis on the delay performance indicator database, and updates the SLA delay parameters of the orchestration plan based on the analysis results, thereby realizing dynamic planning and intelligent simulation analysis of the SLA delay parameters in the sub-slice configuration template of the bearer network.

[0122] Based on the above embodiment, in step 420, the receiving of the analysis result sent by the SPN further includes:

[0123] The analysis result is sent to the NSMF, so that the NSMF updates the SLA delay requirement based on the analysis result.

[0124] Specifically, the bearer network slice subnet management system TN-NSSMF receives the analysis results sent by SPN, and forwards the analysis results to the network slice management system NSMF, so that NSMF can update the SLA latency requirements of the network slice carried in the planning configuration request based on the received analysis results.

[0125] Based on the above embodiment, in step 420, the orchestration scheme of the network slice is sent to the SPN, and then further includes:

[0126] Delay verification failure information generated and sent after receiving basic delay verification failure;

[0127] The delay verification failure information is forwarded to NSMF.

[0128] Specifically, if the basic delay verification of the orchestration plan fails, delay verification failure information is generated and the verification failure information is sent to the bearer network slice subnet pipeline system TN-NSSMF. TN-NSSMF receives the delay verification failure information and forwards the delay verification failure information to the network slice management system NSMF.

[0129] The slice analysis method of the bearer network provided by the present invention proposes that the bearer network management and control system actively monitors and analyzes and reports the latency indicators in various typical bearer sub-slice configuration templates to TN-NSSMF and NSMF, and adopts an innovative method from bottom to top to promote TN-NSSMF and NSMF to dynamically establish and maintain different types of bearer network sub-slice configuration templates. Through the dynamic acquisition and regular updating of latency indicators, an intelligent monitoring and dynamic planning method for latency indicators in the bearer network sub-slice configuration template is established, thereby supporting the dynamic planning and automated deployment functions of end-to-end network slicing.

[0130] Figure 5 It is a hierarchical monitoring and analysis diagram of the SPN network slice resources provided by the present invention, such as Figure 5 As shown, the slice analysis method of the bearer network provided by the present invention, taking the 5G bearer network based on SPN as an example, supports a hierarchical OAM architecture, and the hierarchical system includes slice transport layer (STL) OAM, slice channel layer (SCL) OAM, slice packet layer (SPL) network transport sublayer OAM and customer service layer OAM. Each network layer has its own independent OAM mechanism, and supports alarm-related OAM, latency and packet loss rate and other performance measurement-related OAM mechanisms to achieve the operation, management and maintenance functions of each layer of the network. The SPN network supports the configuration of corresponding SPL, SCL and STL network layered OAM mechanisms for different service types, and can be applied to the OAM layered deployment architecture of the SPN network that carries 5G mobile backhaul services.

[0131] Taking the SPN network as an example, the bearer network slice resources are divided into three layers: the physical network layer (physical nodes and links), the virtual network layer (virtual nodes and virtual links), and the service slice layer (packet network tunnels and their L2 / L3VPN services). The layered delay monitoring method first monitors the basic delay of physical nodes and links, then monitors and analyzes the virtual link and network connection layer delay of transmission networks such as FlexE / ODUk, and finally monitors and analyzes the packet tunnel layer forwarding delay and L2 / L3VPN service message delay that are closely related to the network slice service. This forms the resource layered delay statistics and delay topology diagram of the bearer network, which is used to support the dynamic planning and deployment of delay indicators of several major types of bearer network slice configuration templates.

[0132] The hierarchical delay monitoring method for bearer networks needs to perform the following three main steps in sequence:

[0133] Step 1: According to the physical topology of the bearer network such as SPN, the precise delay of each link segment and the fixed delay of each node are obtained through IEEE 1588v2 or TWAMP protocol, and the network topology of the SPN basic network is summarized. For the network connection between a specific pair of source and sink nodes, the delay capability range of the SPN network slice resources is obtained. According to the SLA delay requirements, the routing calculation and selection service of the network slice resources that guarantees the expected delay performance is provided for delay-sensitive services, that is, the specific routing of the SPN network slice is determined.

[0134] Step 2: According to the selected physical route, pre-configure SPN static network resources, namely, NNI's FlexE / MTN interface and MTN channel, enable 1DM and DM functions in channel OAM, monitor the one-way delay and two-way delay of the static channel, and obtain the delay performance of the hard-isolated slice resources.

[0135] Step 3: In the MTN channel, dynamically configure or use the configured service slice resources on demand, and enable tunnel layer 1DM / DM. For example, the precise delay of the slice service message is monitored in real time through the In-band OAM of SR-TP. First, it provides KPI monitoring reports of SLA parameters to network slice customers, and second, it supports dynamic planning of network slice resource templates based on delay performance and realizes simulation analysis.

[0136] In response to the SLA performance indicator monitoring requirements of the end-to-end network slices of the bearer network issued by NSMF, TN NSSMF combines the hierarchical OAM monitoring capabilities provided by SPN to automatically decompose and deploy the slice performance monitoring requirements of the bearer network to the SPN network, meeting the management requirements of the entire life cycle of 5G end-to-end network slices.

[0137] Figure 6 is an overall flow chart of the slice analysis method of the bearer network provided by the present invention, such as Figure 6 As shown, the method includes:

[0138] Step 1: At the beginning of the SPN network deployment, the LLDP protocol of the physical link and the BGP-LS protocol of the management and control are used to realize the automatic discovery and topology collection and reporting of the SPN network physical topology. The bearer network management and control system completes all basic network protocols and parameter configurations, including OSPF, IS-IS protocol, IEEE1588V2, segment layer OAM or TWAMP protocol, etc.

[0139] Step 2: The bearer network management and control system monitors and obtains the latency of each point-to-point link in the entire network through IEEE 1588V2, segment layer OAM or TWAMP protocol, and obtains the typical value of forwarding latency of each type of SPN equipment (UPE / SPE / XPE / NPE) and P / PE single node, and builds the basic network topology and latency information of the bearer network.

[0140] Step 3: In the initial planning and configuration phase of network slicing, the network slicing management system NSMF sends an end-to-end network slicing planning and configuration request to the bearer network slicing subnet management system TN-NSSMF, and the planning and configuration request carries the SLA latency requirements of the network slicing. The SLA latency requirements of the network slicing include bandwidth, latency, reliability, isolation, etc.

[0141] Step 4: After the bearer network slice subnet management system TN-NSSMF receives the network slice planning and configuration request sent by the network slice management system NSMF, it will orchestrate the physical routing and sub-slice configuration templates of the network slices in the TN domain according to the SLA latency requirements of the network slices carried in the planning and configuration request and the basic network topology and latency information of the bearer network. The sub-slice configuration templates contain SLA parameters. The physical routing and sub-slice configuration templates of the orchestrated network slices are used to generate the network slice orchestration plan.

[0142] Step 5: TN-NSSMF sends the orchestration plan of the network slice to the slice packet network SPN. SPN receives the orchestration plan of the network slice sent by the bearer network slice subnet management system, and performs basic delay verification on the generated orchestration plan according to the basic delay between the source and sink nodes in the orchestration plan and the SLA delay requirements of the network slice. If the verification passes, execute step 6; if the verification fails, generate delay verification failure information and send it to TN-NSSMF, and transmit the delay verification failure information to the network slice management system NSMF through TN-NSSMF.

[0143] Step 6: Configure the static network resources of the network slice according to the orchestration plan, and enable the one-way or two-way delay measurement OAM function of the static network resources according to the SLA delay requirements, monitor and obtain the delay indicator data of the static network resources; after the static network resources are configured, execute step 7.

[0144] Step 7: Configure the service slice resources of the network slice according to the orchestration plan, and enable the one-way or two-way delay measurement OAM function of the service slice resources according to the SLA delay requirements to monitor and obtain the delay indicator data of the service slice resources.

[0145] Step 8: construct a delay performance indicator database based on the delay indicator data obtained through monitoring; perform delay performance indicator analysis on the delay performance indicator database to obtain analysis results.

[0146] Step 9: Send the analysis results to TN-NSSMF so that TN-NSSMF can update the SLA delay parameters of the orchestration plan according to the analysis results; TN-NSSMF sends the analysis results to NSMF so that NSMF can update the SLA delay requirements of the network slice carried in the planning configuration request according to the analysis results.

[0147] The slice analysis method of the bearer network provided in the embodiment of the present invention, TN-NSSMF interacts with the SPN network management through the northbound interface to realize real-time monitoring of the delay performance of the layered resources of the bearer network slice, and then builds a database of delay performance indicators of the bearer network, performs delay performance indicator analysis on the delay indicator database, and obtains analysis results, so that TN-NSSMF and NSMF can update delay parameters and delay requirements according to the analysis results.

[0148] The following is a description of a slice analysis device for a bearer network provided by the present invention. The slice analysis device for a bearer network described below and the slice analysis method for a bearer network described above can be referred to each other.

[0149] Figure 7 FIG. 1 is one of the structural schematic diagrams of the slice analysis device for the carrier network provided by the present invention. Figure 7 As shown, the device comprises:

[0150] The orchestration scheme receiving unit 710 is used to receive the orchestration scheme of the network slice generated by the bearer network slice management system TN-NSSMF based on the basic network topology and delay information of the bearer network, where the basic network topology and delay information are updated based on the delay indicator data obtained by real-time monitoring;

[0151] A basic delay verification unit 720 is used to perform basic delay verification on the orchestration scheme based on the basic delay between the source and sink nodes in the orchestration scheme and the SLA delay requirement of the network slice;

[0152] The resource configuration monitoring unit 730 is used to sequentially configure the static network resources and business slice resources of the network slice based on the orchestration plan, and monitor the latency indicator data of the static network resources and the business slice resources.

[0153] The slice analysis device of the bearer network provided by the present invention adopts an active monitoring and analysis method of layered delay indicators, combines the SLA performance indicator monitoring data of each layer of network resources, and proposes an effective method for enabling real-time monitoring of accurate delay of layered resources in the bearer network and using it for end-to-end delay decomposition in SLA. It solves the problem of scientific and reasonable decomposition of delay indicators in the SLA of end-to-end network slices, and realizes the delay indicator decomposition of end-to-end network slices and the delay indicator setting in the bearer network sub-slice template.

[0154] Based on any of the above embodiments, the device further includes a delay information determining unit, configured to:

[0155] Acquire the basic network topology;

[0156] Monitoring the link delay of each point-to-point in the basic network topology;

[0157] Delay information of the basic network topology is determined based on a typical value of a forwarding delay of each node in the basic network topology and a delay of each point-to-point link.

[0158] Based on any of the above embodiments, the resource configuration monitoring unit 730 is used to:

[0159] Configure the static network resources of the network slice based on the orchestration scheme, and enable the unidirectional or bidirectional delay measurement function of the static network resources based on the SLA delay requirement to obtain delay indicator data of the static network resources;

[0160] After the static network resource configuration is completed, the business slice resources of the network slice are configured based on the orchestration plan, and the unidirectional or bidirectional delay measurement function of the business slice resources is enabled based on the SLA delay requirements to obtain the delay indicator data of the business slice resources.

[0161] Based on any of the above embodiments, the device further includes a delay parameter updating unit, configured to:

[0162] Entering the monitored delay index data into the delay performance index database;

[0163] Performing a delay performance indicator analysis based on the delay performance indicator database to obtain an analysis result;

[0164] The analysis result is sent to the TN-NSSMF, so that the TN-NSSMF updates the SLA delay parameter of the scheduling plan based on the analysis result.

[0165] Based on any of the above embodiments, the device further includes a failure information sending unit, which is used to:

[0166] If the verification fails, delay verification failure information is generated and sent to the TN-NSSMF, and the delay verification failure information is transmitted to the network slice management system NSMF through the TN-NSSMF.

[0167] Figure 8 This is the second structural schematic diagram of the slice analysis device of the carrier network provided by the present invention. Figure 8 As shown, the device comprises:

[0168] The orchestration scheme generating unit 810 is used to generate an orchestration scheme for the network slice based on the basic network topology and latency information of the bearer network, wherein the basic network topology and latency information are updated by the slice packet network SPN based on the latency indicator data obtained by monitoring;

[0169] A basic delay verification unit 820 is used to send the orchestration scheme of the network slice to the SPN, so that the SPN performs basic delay verification on the orchestration scheme based on the basic delay between the source and sink nodes in the orchestration scheme and the SLA delay requirement of the network slice;

[0170] The resource configuration monitoring unit 830 is used to sequentially configure the static network resources and business slice resources of the network slice based on the orchestration plan after verification, and monitor the latency indicator data of the static network resources and the business slice resources.

[0171] The slice analysis device for the bearer network provided by the present invention proposes that the bearer network management and control system actively monitors, analyzes and reports the latency indicators in various typical bearer sub-slice configuration templates to TN-NSSMF and NSMF, and adopts an innovative method from bottom to top to promote TN-NSSMF and NSMF to dynamically establish and maintain different types of bearer network sub-slice configuration templates. Through the dynamic acquisition and regular updating of latency indicators, an intelligent monitoring and dynamic planning method for latency indicators in the bearer network sub-slice configuration template is established, thereby supporting the dynamic planning and automated deployment functions of end-to-end network slicing.

[0172] Based on any of the above embodiments, the arrangement scheme generating unit 810 is used to:

[0173] Receiving the basic network topology and latency information of the bearer network sent by the SPN;

[0174] Receive a planning and configuration request for a network slice sent by a network slice management system NSMF, where the planning and configuration request carries the SLA latency requirement of the network slice;

[0175] Based on the SLA latency requirements, as well as the basic network topology of the bearer network and its latency information, an orchestration plan for the network slice is generated.

[0176] Based on any of the above embodiments, the device further includes a delay parameter updating unit, configured to:

[0177] Receiving an analysis result sent by the SPN, where the analysis result is obtained by the SPN performing a delay performance indicator analysis based on a delay performance indicator database, where the delay performance indicator database is constructed based on delay indicator data obtained through monitoring;

[0178] Based on the analysis result, the SLA delay parameter of the orchestration solution is updated.

[0179] Based on any of the above embodiments, the device further includes a delay requirement updating unit, configured to:

[0180] The analysis result is sent to the NSMF, so that the NSMF updates the SLA delay requirement based on the analysis result.

[0181] Based on any of the above embodiments, the device further includes a failure information sending unit, which is used to:

[0182] Delay verification failure information generated and sent after receiving basic delay verification failure;

[0183] The delay verification failure information is forwarded to the NSMF.

[0184] Fig. 9 An example of a physical structure diagram of an electronic device is shown in FIG. Fig. 9 As shown, the electronic device may include: a processor 910, a communication interface 920, a memory 930 and a communication bus 940, wherein the processor 910, the communication interface 920 and the memory 930 communicate with each other through the communication bus 940. The processor 910 may call the logic instructions in the memory 930 to execute the slice analysis method of the bearer network, the method comprising: receiving the network slice arrangement scheme generated by the bearer network sub-slice management system TN-NSSMF based on the basic network topology and delay information of the bearer network, wherein the basic network topology and delay information are updated based on the delay index data obtained by real-time monitoring; based on the basic delay between the source and sink nodes in the arrangement scheme and the SLA delay requirement of the network slice, the arrangement scheme is verified for basic delay; if the verification is passed, the static network resources and service slice resources of the network slice are sequentially configured based on the arrangement scheme, and the delay index data of the static network resources and the service slice resources are monitored.

[0185] The processor 910 can also call the logic instructions in the memory 930 to execute the slice analysis method of the bearer network, which method includes: generating an orchestration plan for the network slice based on the basic network topology and latency information of the bearer network, wherein the basic network topology and latency information are updated by the slice packet network SPN based on latency indicator data obtained through monitoring; sending the orchestration plan for the network slice to the SPN, so that the SPN can perform basic latency verification on the orchestration plan based on the basic latency between the source and destination nodes in the orchestration plan and the SLA latency requirements of the network slice, and after the verification is passed, sequentially configure the static network resources and service slice resources of the network slice based on the orchestration plan, and monitor the latency indicator data of the static network resources and the service slice resources.

[0186] In addition, the logic instructions in the above-mentioned memory 930 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0187] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the slice analysis method of the bearer network provided by the above methods, and the method includes: receiving a network slice orchestration plan generated by a bearer network sub-slice management system TN-NSSMF based on the basic network topology and delay information of the bearer network, and the basic network topology and its delay information are updated based on the delay indicator data obtained by real-time monitoring; based on the basic delay between the source and destination nodes in the orchestration plan and the SLA delay requirement of the network slice, the basic delay verification of the orchestration plan is performed; if the verification passes, the static network resources and business slice resources of the network slice are sequentially configured based on the orchestration plan, and the delay indicator data of the static network resources and the business slice resources are monitored.

[0188] When the program instructions are executed by a computer, the computer can also execute the slice analysis method of the bearer network provided by the above methods, the method comprising: generating an orchestration scheme for network slicing based on the basic network topology and delay information of the bearer network, the basic network topology and delay information being updated by the slice packet network SPN based on delay index data obtained through monitoring; sending the orchestration scheme for the network slicing to the SPN, so that the SPN can perform basic delay verification on the orchestration scheme based on the basic delay between the source and destination nodes in the orchestration scheme and the SLA delay requirement of the network slice, and sequentially configuring the static network resources and business slice resources of the network slice based on the orchestration scheme after the verification is passed, and monitoring the delay index data of the static network resources and the business slice resources.

[0189] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the processor executes the above-mentioned slice analysis method of the bearer network, the method comprising: receiving a network slice orchestration plan generated by the bearer network sub-slice management system TN-NSSMF based on the basic network topology and delay information of the bearer network, the basic network topology and its delay information being updated based on delay indicator data obtained by real-time monitoring; performing basic delay verification on the orchestration plan based on the basic delay between the source and destination nodes in the orchestration plan and the SLA delay requirement of the network slice; if the verification passes, sequentially configuring the static network resources and service slice resources of the network slice based on the orchestration plan, and monitoring the delay indicator data of the static network resources and the service slice resources.

[0190] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the slice analysis method of the bearer network provided above, the method comprising: generating an orchestration scheme for network slicing based on the basic network topology and delay information of the bearer network, the basic network topology and delay information being updated by the slice packet network SPN based on delay index data obtained through monitoring; sending the orchestration scheme for the network slicing to the SPN, so that the SPN performs basic delay verification on the orchestration scheme based on the basic delay between the source and destination nodes in the orchestration scheme and the SLA delay requirement of the network slice, and after the verification is passed, sequentially configuring the static network resources and business slice resources of the network slice based on the orchestration scheme, and monitoring the delay index data of the static network resources and the business slice resources.

[0191] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0192] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0193] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A slice analysis method for a bearer network, characterized in that: include: Receive the network slice orchestration plan generated by the bearer network slice subnet management system TN-NSSMF based on the basic network topology and latency information of the bearer network, where the basic network topology and latency information are updated based on the latency indicator data obtained through monitoring; Based on the basic delay between the source and sink nodes in the orchestration scheme and the SLA delay requirement of the network slice, perform basic delay verification on the orchestration scheme; If the verification passes, the static network resources and business slice resources of the network slice are configured sequentially based on the orchestration plan, and the latency indicator data of the static network resources and the business slice resources are monitored.

2. The method for analyzing a slice of a bearer network according to claim 1, characterized in that: The receiving bearer network slice subnet management system TN-NSSMF generates a network slice orchestration scheme based on the basic network topology and latency information of the bearer network, and also includes: Acquire the basic network topology; Monitoring the link delay of each point-to-point in the basic network topology; Delay information of the basic network topology is determined based on a typical value of a forwarding delay of each node in the basic network topology and a delay of each point-to-point link.

3. The method for analyzing a slice of a bearer network according to claim 1, characterized in that: The configuring the static network resources and the service slice resources of the network slice in sequence based on the orchestration scheme, and monitoring the latency indicator data of the static network resources and the service slice resources, includes: Configure the static network resources of the network slice based on the orchestration scheme, and enable the unidirectional or bidirectional delay measurement function of the static network resources based on the SLA delay requirement to obtain delay indicator data of the static network resources; After the static network resource configuration is completed, the business slice resources of the network slice are configured based on the orchestration plan, and the unidirectional or bidirectional delay measurement function of the business slice resources is enabled based on the SLA delay requirements to obtain the delay indicator data of the business slice resources.

4. The method for analyzing a slice of a bearer network according to any one of claims 1 to 3, characterized in that: The configuring the static network resources and the service slice resources of the network slice in sequence based on the orchestration scheme, and monitoring the latency indicator data of the static network resources and the service slice resources, further comprising: Entering the monitored delay index data into the delay performance index database; Performing a delay performance indicator analysis based on the delay performance indicator database to obtain an analysis result; The analysis result is sent to the TN-NSSMF, so that the TN-NSSMF updates the SLA delay parameter of the scheduling plan based on the analysis result.

5. The slice analysis method of a bearer network according to any one of claims 1 to 3, characterized in that: The step of performing basic delay verification on the orchestration scheme based on the basic delay between the source and sink nodes in the orchestration scheme and the SLA delay requirement of the network slice further includes: If the verification fails, delay verification failure information is generated and sent to the TN-NSSMF, and the delay verification failure information is transmitted to the network slice management system NSMF through the TN-NSSMF.

6. A slice analysis method for a bearer network, characterized in that: include: Generate an orchestration plan for network slicing based on the basic network topology and latency information of the bearer network, where the basic network topology and latency information are updated by the slice packet network SPN based on latency indicator data obtained through monitoring; The orchestration plan of the network slice is sent to the SPN, so that the SPN can perform basic delay verification on the orchestration plan based on the basic delay between the source and destination nodes in the orchestration plan and the SLA delay requirement of the network slice, and after the verification, sequentially configure the static network resources and business slice resources of the network slice based on the orchestration plan, and monitor the delay indicator data of the static network resources and the business slice resources.

7. The method for analyzing a slice of a bearer network according to claim 6, characterized in that: The generating of the network slice arrangement scheme based on the basic network topology and latency information of the bearer network includes: Receiving the basic network topology and latency information of the bearer network sent by the SPN; Receive a planning and configuration request for a network slice sent by a network slice management system NSMF, where the planning and configuration request carries the SLA latency requirement of the network slice; Based on the SLA latency requirements, as well as the basic network topology of the bearer network and its latency information, an orchestration plan for the network slice is generated.

8. The slice analysis method of the bearer network according to claim 6 or 7, characterized in that: The step of sending the orchestration scheme of the network slice to the SPN further includes: Receiving an analysis result sent by the SPN, where the analysis result is obtained by the SPN performing a delay performance indicator analysis based on a delay performance indicator database, where the delay performance indicator database is constructed based on delay indicator data obtained through monitoring; Based on the analysis result, the SLA delay parameter of the orchestration solution is updated.

9. The method for analyzing a slice of a bearer network according to claim 8, characterized in that: The receiving the analysis result sent by the SPN further includes: The analysis result is sent to the NSMF, so that the NSMF updates the SLA delay requirement based on the analysis result.

10. The slice analysis method of the bearer network according to claim 6 or 7, characterized in that: The step of sending the orchestration scheme of the network slice to the SPN further includes: Delay verification failure information generated and sent after receiving basic delay verification failure; The delay verification failure information is forwarded to NSMF.

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