Method, apparatus, system and storage medium for adjusting transmission sub-slice bandwidth

Abstract

Embodiments of the present application relate to the field of communications, and disclose a method, apparatus, system, and storage medium for adjusting the bandwidth of a transport sub-slice. In the present application, after determining the transport sub-slice to be adjusted according to the transport sub-slice bandwidth adjustment instruction, by obtaining the transport network service connection model and the transport network service hierarchy model of the transport sub-slice, and then automatically obtaining all the connection resources that need to be adjusted in the transport sub-slice according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model. Finally, when it is determined that the transport sub-slice performs bandwidth adjustment, the bandwidth corresponding to the connection resources that need to be adjusted is adjusted, thereby realizing the automatic on-demand adjustment of the transport sub-slice bandwidth, improving the adjustment efficiency and accuracy of the transport sub-slice bandwidth, and meeting the requirement of the 5G network slice for quickly adjusting the bandwidth on demand.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and particularly to a method, device, system, and storage medium for adjusting the bandwidth of a transport sub-slice. Background Art

[0002] With the development of communication technologies, the types of communication services have gradually increased, and there are huge differences in the requirements for network performance such as mobility, bandwidth, latency, reliability, security, and operation and billing for different communication services. If a specific network is established for each communication service, although the requirements of various communication services can be met, the implementation cost is too high; if communication services with different requirements are carried on the same network, it will lead to a complex network, difficult operation and maintenance, and due to the large differences in the requirements of different communication services, the quality of service (QoS) of communication services will also decline.

[0003] To solve the above problems, the concept of network slice (NS) is introduced in the fifth-generation mobile communication system (5G) to address the differences in the requirements for network performance of different communication services. A network slice refers to cutting the physical network into multiple independent logical networks according to the requirements of different service applications for the number of users, QoS, and bandwidth, that is, each network slice can be regarded as a logical network for completing a communication service. The current 5G network slice is an end-to-end slice across domains, and at least includes a radio sub-slice, a core sub-slice, and a transport sub-slice for connecting the radio sub-slice and the core sub-slice within a network slice.

[0004] Although 5G network slicing can flexibly allocate network resources, flexibly combine network capabilities, and thus meet the network performance requirements of different communication services. However, existing network slicing solutions mainly focus on core sub-slices and radio sub-slices, with less research on transport sub-slices. And the on-demand adjustment of the transport sub-slice bandwidth is a prerequisite for the on-demand adjustment of the 5G network slice bandwidth. However, since there is currently no solution that can automatically and comprehensively adjust the transport sub-slice bandwidth, the adjustment of the transport sub-slice bandwidth must rely on manual adjustment. However, the network connections provided by the transport sub-slice are multi-layer connections established according to the transport network service layer model, which makes the bandwidth adjustment operation relatively complex. For example, if the transport sub-slice is an L3VPN based on FlexE technology and SR / MPLS tunnel technology, then to adjust the bandwidth of the transport sub-slice, it may be necessary to adjust the bandwidth of the UNI port of the L3VPN AC port, adjust the bandwidth of the SR / MPLS tunnel, and adjust the bandwidth of the FlexEChannel of the tunnel service layer. Without the ability to automatically adjust the bandwidth, it is necessary to manually find all the resources involved in the transport sub-slice and adjust the bandwidth one by one. If a transport sub-slice has 100 connections, and each connection has a three-layer customer layer and service layer relationship, and if one connection involves 5 nodes, then the number of manual operations required is 1500 (100×3×5). This example is for the simple case of adjusting the bandwidth of the transport sub-slice. In fact, the connections of the transport sub-slice are more complex, and it is normal to have tens of thousands of connections. From the above example, if the bandwidth of the transport sub-slice is adjusted manually in a single-node manner, the operation is very complex, the adjustment efficiency is very low, and the probability of manual operation errors is high. This will directly affect the ability of the 5G network slice to adjust the bandwidth on demand and have a direct impact on the implementation and promotion of the 5G network slice. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a method, device, system, and storage medium for adjusting the bandwidth of a transport sub-slice, aiming to achieve the automatic on-demand adjustment of the transport sub-slice bandwidth, improve the adjustment efficiency and accuracy of the transport sub-slice bandwidth, and thus meet the requirements of the 5G network slice for quickly adjusting the bandwidth on demand.

[0006] To solve the above technical problems, an embodiment of the present application provides a method for adjusting the bandwidth of a transport sub-slice, including:

[0007] Determine the transport sub-slice to be adjusted according to the received transport sub-slice bandwidth adjustment instruction;

[0008] Obtain the transport network service connection model and the transport network service layer model of the transport sub-slice;

[0009] Obtain the connection resources that need to be adjusted in the transport sub-slice according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model;

[0010] Adjust the bandwidth corresponding to the connection resources that need to be adjusted according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model.

[0011] To achieve the above object, an embodiment of the present application further provides a transport sub-slice bandwidth adjustment device, including:

[0012] A determination module, configured to determine the transport sub-slice to be adjusted according to the received transport sub-slice bandwidth adjustment instruction;

[0013] A first acquisition module, configured to acquire the transport network service connection model and the transport network service hierarchy model of the transport sub-slice;

[0014] A second acquisition module, configured to acquire the connection resources that need to be adjusted in the transport sub-slice according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model;

[0015] An adjustment module, configured to adjust the bandwidth corresponding to the connection resources that need to be adjusted according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model.

[0016] To achieve the above object, an embodiment of the present application further provides a transport sub-slice management system, including:

[0017] A memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the transport sub-slice bandwidth adjustment method as described above.

[0019] To achieve the above object, an embodiment of the present application further provides a network slice management system, including: a slice management system, a radio sub-slice management system, a core sub-slice management system, and the transport sub-slice management system as described above;

[0020] The transport sub-slice management system interacts with network element devices through a southbound interface, and the network element devices respectively interact with the radio sub-slices managed by the radio sub-slice management system and the core sub-slices managed by the core sub-slice management system to connect the radio sub-slices managed by the radio sub-slice management system and the core sub-slices managed by the core sub-slice management system;

[0021] The transmission sub-slice management system also interacts with the slice management system through a northbound interface to adjust the bandwidth of the transmission sub-slice according to the transmission sub-slice bandwidth adjustment instruction provided by the slice management system.

[0022] To achieve the above object, an embodiment of the present application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the above-mentioned transmission sub-slice bandwidth adjustment method is implemented.

[0023] The transmission sub-slice bandwidth adjustment method, device, system and storage medium proposed by the present application, after determining the transmission sub-slice to be adjusted according to the transmission sub-slice bandwidth adjustment instruction, obtain the transmission network service connection model and the transmission network service hierarchy model of the transmission sub-slice, and then automatically obtain all the connection resources that need to be adjusted in the transmission sub-slice according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model and the transmission network service hierarchy model. Finally, when determining that the transmission sub-slice performs bandwidth adjustment, adjust the bandwidth corresponding to the connection resources that need to be adjusted, thereby realizing the automatic on-demand adjustment of the transmission sub-slice bandwidth, improving the adjustment efficiency and accuracy of the transmission sub-slice bandwidth, and meeting the demand for rapid on-demand bandwidth adjustment of 5G network slices at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] One or more embodiments are illustrated by way of example in the accompanying drawings, and these exemplary illustrations do not limit the embodiments.

[0025] Figure 1 is a schematic structural diagram of a transmission sub-slice management system provided by the first embodiment of the present application;

[0026] Figure 2 is a schematic structural diagram of a network slice management system provided by the second embodiment of the present application;

[0027] Figure 3 is a flowchart of a transmission sub-slice bandwidth adjustment method provided by the third embodiment of the present application;

[0028] Figure 4 is Figure 3 a schematic structural diagram of a transmission network service connection model involved in the transmission sub-slice bandwidth adjustment method provided by the third embodiment of the present application shown;

[0029] Figure 5 is Figure 3 a schematic structural diagram of a transmission network service hierarchy model involved in the transmission sub-slice bandwidth adjustment method provided by the third embodiment of the present application shown;

[0030] Figure 6 is a schematic diagram of a transmission sub-slice bandwidth adjustment method provided by the fourth embodiment of the present application;

[0031] Figure 7 It is a schematic structural diagram of a transmission sub-slice bandwidth adjustment device provided by the fifth embodiment of the present application. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that in the embodiments of the present application, many technical details are presented for the readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented. The following division of each embodiment is for convenience of description and should not constitute any limitation to the specific implementation manner of the present application. Each embodiment can be combined and cross-referenced with each other on the premise of not being contradictory.

[0033] The first embodiment of the present application relates to a transmission sub-slice management system, as Figure 1 shown, including: at least one processor 102; and a memory 101 communicatively connected to the at least one processor; wherein, the memory 101 stores instructions executable by the at least one processor 102, and the instructions are executed by the at least one processor 102 to enable the at least one processor 102 to execute the transmission sub-slice bandwidth adjustment method described in any embodiment of the present application.

[0034] Wherein, the memory 101 and the processor 102 are connected by a bus. The bus may include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processors 102 and the memory 101 together. The bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art, and therefore, they will not be further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be one component or multiple components, such as multiple receivers and transmitters, and provides a unit for communicating with various other devices on the transmission medium. The data processed by the processor 102 is transmitted on the wireless medium through the antenna. Further, the antenna also receives data and transmits the data to the processor 102.

[0035] The processor 102 is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interface, voltage regulation, power management, and other control functions. The memory 101 can be used to store the data used by the processor 102 when performing operations.

[0036] The second embodiment of the present application relates to a network slice management system.

[0037] It should be understood that in a 5G network slice, each 5G network slice at least includes a radio sub-slice, a core sub-slice, and a transport sub-slice for connecting the radio sub-slice and the core sub-slice. To facilitate the management of each 5G network slice, this embodiment provides a network slice management system, as Figure 2 shown. The network slice management system provided in this embodiment mainly includes: a radio sub-slice management system for managing radio sub-slices, a core sub-slice management system for managing core sub-slices, a transport sub-slice management system for managing transport sub-slices, and a slice management system for managing the radio sub-slice management system, the core sub-slice management system, and the transport sub-slice management system.

[0038] Specifically, in this network slice management system, the transport sub-slice management system specifically interacts with network element devices in a metropolitan area network and a wide area network, such as routers and switches, through a southbound interface.

[0039] Furthermore, the network element devices interact with the radio sub-slices managed by the radio sub-slice management system and the core sub-slices managed by the core sub-slice management system through their respective metropolitan area networks and wide area networks, so as to connect the radio sub-slices managed by the radio sub-slice management system and the core sub-slices managed by the core sub-slice management system.

[0040] In addition, as Figure 2 shown, the cloud network composed of the radio sub-slices managed by the radio sub-slice management system and the cloud network composed of the core sub-slices managed by the core sub-slice management system are described.

[0041] As Figure 2 shown, the current 5G radio RAN architecture generally considers an independent deployment method for the central unit ( Figure 2 CU in it) and the distributed unit ( Figure 2 DU in it) to better meet the requirements of various scenarios and applications. Therefore, the radio sub-slice management system for managing radio sub-slices needs to establish communication connections with the CU and the DU respectively.

[0042] The core sub-slice mainly has the functions of the existing core network, which is mainly divided into the network protocol ( Figure 2 AMF in it) and the user plane function ( Figure 2 UPF in it). Therefore, the core sub-slice management system for managing core sub-slices needs to establish communication connections with the UPF and the AMF respectively.

[0043] Furthermore, with the development of cloud technology and instant communication technology, the cloud network composed of wireless sub-slices managed by the wireless sub-slice management system and the cloud network composed of core sub-slices managed by the core sub-slice management system also need to include a network function virtualization infrastructure solution ( Figure 2 NIFI in

[0044] It should be understood that the above examples are only examples listed for better understanding the technical solutions of this embodiment, and do not serve as the only limitation to this embodiment. In actual applications, other functions can also be deployed as needed in the cloud network composed of wireless sub-slices managed by the wireless sub-slice management system and the cloud network composed of core sub-slices managed by the core sub-slice management system.

[0045] In addition, the transport sub-slice management system is also used to interact with the slice management system through the northbound interface, so as to adjust the bandwidth of the transport sub-slice according to the transport sub-slice bandwidth adjustment instruction provided by the slice management system and the transport sub-slice bandwidth adjustment method according to any embodiment of the present application.

[0046] In order to enable the transport sub-slice management system in the network slice management system provided by this embodiment to automatically adjust the bandwidth of the transport sub-slice on demand, improve the adjustment efficiency and accuracy of the transport sub-slice bandwidth, and thus meet the demand for rapid on-demand bandwidth adjustment of 5G network slices, the transport sub-slice bandwidth adjustment method involved in the third embodiment is specifically described below in combination with the system structure given in this embodiment.

[0047] The third embodiment of the present application relates to a method for adjusting the bandwidth of a transport sub-slice. After determining the transport sub-slice to be adjusted according to the transport sub-slice bandwidth adjustment instruction, by obtaining the transport network service connection model and the transport network service hierarchy model of the transport sub-slice, and then automatically obtaining all the connection resources that need to be adjusted in the transport sub-slice according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model and the transport network service hierarchy model. Finally, when it is determined that the transport sub-slice is adjusted in bandwidth, the bandwidth corresponding to the connection resources that need to be adjusted is adjusted, thus realizing the automatic on-demand adjustment of the transport sub-slice bandwidth. While improving the adjustment efficiency and accuracy of the transport sub-slice bandwidth, it also meets the demand for rapid on-demand bandwidth adjustment of 5G network slices.

[0048] The implementation details of the transport sub-slice bandwidth adjustment method of this embodiment are described below. The following content is only the implementation details provided for convenience of understanding, and is not necessary for implementing this solution.

[0049] The transport sub-slice bandwidth adjustment method provided in this embodiment is specifically applied to the transport sub-slice management system described in the above embodiment.

[0050] The specific process of this embodiment is as follows Figure 3 as shown, and specifically includes the following steps:

[0051] Step S10: Determine the transport sub-slice to be adjusted according to the received transport sub-slice bandwidth adjustment instruction.

[0052] Specifically, through the description of the second embodiment, it can be known that the slice management system is used to manage the transport sub-slice management system. Therefore, the received transport sub-slice bandwidth adjustment instruction mentioned above comes from the slice management system.

[0053] In addition, through the description of the second embodiment, it can be known that the transport sub-slice management system interacts with the slice management system through the northbound interface. Therefore, the received transport sub-slice bandwidth adjustment instruction mentioned above is specifically extracted from the message or request provided by the slice management system received through the northbound interface.

[0054] In addition, it should be understood that in order to ensure that the transport sub-slice management system can receive the transport sub-slice bandwidth adjustment instruction, when implementing the transport sub-slice bandwidth adjustment method provided in this application, it is necessary to first determine that the transport sub-slice management system can communicate with the slice management system normally through the northbound interface.

[0055] In addition, regarding the issuance condition of the above-mentioned transport sub-slice bandwidth adjustment instruction, specifically, it is determined when the slice management system receives a bandwidth adjustment instruction triggered by the user according to the service level agreement (SLA) of the communication service management function (CSMF), or when it is determined that the load of the transport sub-slice exceeds the threshold according to the throughput rate of the transport sub-slice fed back by the transport sub-slice management system.

[0056] Correspondingly, when it is determined that a transport sub-slice bandwidth adjustment instruction needs to be issued to the transport sub-slice management system, it is first necessary to generate a transport sub-slice bandwidth adjustment instruction according to the bandwidth adjustment requirements corresponding to the SLA of the network slice service SNSSAI.

[0057] For the convenience of subsequent description, this embodiment briefly introduces the 5G network slice first.

[0058] Specifically, in practical applications, the 5G network slice is usually represented as NSI, which mainly includes the user-side S-NSSAI and the network-side NSI.

[0059] The network-side NSI is composed of three domains, namely the core sub-slice CN-NSSI, the radio sub-slice RAN-NSSI, and the transport sub-slice TN-NSSI.

[0060] In practical applications, a 5G network slice NSI may include multiple network slice services S-NSSAI, and multiple S-NSSAI may correspond to different parts of a TN-NSSI. Therefore, when determining the transport sub-slice to be adjusted, it may be a certain part of a certain transport sub-slice that is determined.

[0061] Therefore, the transport sub-slice bandwidth adjustment instruction should at least include the network slice service identifier S-NSSAI, the transport sub-slice identifier TN-NSSI, and the target bandwidth value to be adjusted to.

[0062] Correspondingly, based on the above description, after receiving the transport sub-slice bandwidth adjustment instruction, the transport sub-slice management system can quickly determine whether the current bandwidth adjustment operation is for the entire transport sub-slice or for a certain part of the transport sub-slice by extracting the network slice service identifier S-NSSAI and the transport sub-slice identifier TN-NSSI from the instruction.

[0063] For example, there are 3 network slice services, and their identifiers are: SNSSAI-VR-1, SNSSAI-VR-2, SNSSAI-VR-3; the transport sub-slice TN-NSSI is divided into three parts, and respectively corresponds to the above three network slice services, such as TN-NSSI-1, TN-NSSI-2, TN-NSSI-3. Then, when the value corresponding to the network service slice identifier extracted from the transport sub-slice bandwidth adjustment instruction is SNSSAI-VR-1 and the value corresponding to the transport sub-slice identifier is TN-NSSI, the specific transport sub-slice to be adjusted is the area corresponding to "1" in the transport sub-slice with the identifier TN-NSSI.

[0064] It should be understood that the above examples are only examples listed for better understanding the technical solution of this embodiment, and do not serve as the only limitation of this embodiment. In practical applications, the transport sub-slice bandwidth adjustment instruction may also include the SLA identifier sliceProfileID, the slice configuration file, and the information of the user network interface UNI of the wireless side / core side AC point.

[0065] Step S20: Obtain the transport network service connection model and the transport network service hierarchy model of the transport sub-slice.

[0066] To better understand the transport sub-slice bandwidth adjustment method provided in this embodiment, this embodiment gives a specific transport network service connection model (as Figure 4 shown) and a specific transport network service hierarchy model (as Figure 5 shown).

[0067] It should be understood that the above examples are only examples listed for better understanding the technical solution of this embodiment, and do not serve as the sole limitation of this embodiment. In actual applications, the transport sub-slice involved in different transport technologies, and even the transport network service connection model and transport network service hierarchy model corresponding to different transport sub-slices involved in the same transport technology may vary, but the on-demand self-adjustment of the bandwidth of the transport sub-slice can be achieved based on the transport sub-slice bandwidth adjustment method provided in this embodiment.

[0068] Step S30: Obtain the connection resources that need to be adjusted in the transport sub-slice according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model.

[0069] Specifically, before executing step S30, the customer layer service relationship can be determined first according to the obtained transport network service hierarchy model.

[0070] In this embodiment, specifically, by determining the relationship between adjacent two service layers in the transport network service hierarchy model, the customer layer service layer relationship corresponding to the service layers included in the entire transport network service hierarchy model is obtained.

[0071] Still taking Figure 5 the transport network service hierarchy model shown as an example, Figure 5 the service layer located on any layer can be regarded as the customer layer.

[0072] Correspondingly, the layer below the customer layer is the service layer.

[0073] That is to say, the above-mentioned customer layer service layer relationship is used to illustrate the upper and lower relationship between adjacent two layers in the transport network service hierarchy model.

[0074] After obtaining the customer layer service layer relationship based on the transport network service hierarchy model, the specific operations to be performed are as follows:

[0075] (1) Extract the network slice service identifier and transport sub-slice identifier from the transport sub-slice bandwidth adjustment instruction, such as the above-mentioned SNSSAI-VR-1 and TN-NSSI.

[0076] (2) Determine all the connection resources in the transport sub-slice according to the transport network service connection model and the customer layer service layer relationship.

[0077] Specifically, in this embodiment, all the connection resources in the transport sub-slice are determined in a way of first horizontal and then vertical.

[0078] That is, first, according to the transport network service connection model, horizontally obtain all the horizontal connection resources in the transport sub-slice; then, according to the customer layer - service layer relationship, vertically obtain the connection resources of each horizontal connection resource in the service layer, so as to obtain all the connection resources in the transport sub-slice.

[0079] Take Figure 4 as an example. Suppose the A - end network element of a certain connection is PE1, and the Z - end network element is PE2. From Figure 4 it can be seen that this connection has two routes. One route can be regarded as the working route, such as PE1 - P1 - PE2, and the other route can be regarded as the protection route, such as PE1 - P2 - PE2.

[0080] Among them, PE1 and PE2 are the boundary nodes of the connection, and P1 and P2 are the intermediate nodes of the connection.

[0081] Based on Figure 4 the transport network service connection model given, it can be determined that the horizontal connection resources included in the transport sub-slice are PE1, P1, P2, and PE2.

[0082] Correspondingly, if the obtained horizontal connection resources are for Figure 5 the tunnel layer in the transport network service hierarchy model shown, then take the tunnel layer as the customer layer. Based on the determined customer layer - service layer relationship, find the corresponding service layer, such as FlexEChannel. Then, based on Figure 4 the transport network service connection model given, obtain all the connection resources included in this layer. Finally, summarize the obtained connection resources to obtain the connection resources included in the entire transport sub-slice.

[0083] (3) According to the network slice service identifier, screen the connection resources in the corresponding area of the transport sub-slice identifier from the connection resources to obtain the connection resources that need to be adjusted.

[0084] That is, according to the extracted SNSSAI - VR - 1, screen out the connection resources in the areas corresponding to SNSSAI - VR - 1 from the connection resources included in the transport sub-slice identified by TN - NSSI, so as to obtain the connection resources that need to be adjusted.

[0085] In addition, it is worth mentioning that in this embodiment, the process of obtaining the above connection resources can be to first obtain the virtual connection VLINK resources, and then, based on the correspondence between the virtual connection resources and the actual connection resources, obtain the corresponding actual connection resources.

[0086] Of course, in actual applications, it is also possible to directly obtain the actual connection resources without relying on the virtual connection resources. This embodiment does not limit this.

[0087] Step S40: Adjust the bandwidth corresponding to the connection resources to be adjusted according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model.

[0088] Specifically, in practical applications, in order to more reasonably adjust the connection bandwidth in the transport sub-slice to be adjusted so that the adjusted transport sub-slice can work properly. Before executing step S40, it is necessary to first determine whether the transport sub-slice can be adjusted in bandwidth according to the transport sub-slice bandwidth adjustment instruction, the transport network service hierarchy model, and the connection resources to be adjusted.

[0089] Correspondingly, if it is determined through the judgment that the transport sub-slice can be adjusted in bandwidth, then step S40 is executed; otherwise, only the bandwidth of the resources that meet the bandwidth adjustment conditions is adjusted according to the service requirements, and the connection resources that do not meet the bandwidth adjustment conditions are recorded for subsequent adjustment after meeting the bandwidth adjustment conditions. It is also possible to choose not to adjust some of the connection resources that meet the bandwidth adjustment conditions and then adjust them after all connection resources meet the bandwidth adjustment conditions ( Figure 3 not shown in the figure).

[0090] In addition, in this embodiment, the operation of determining whether the transport sub-slice can be adjusted in bandwidth according to the transport sub-slice bandwidth adjustment instruction, the transport network service hierarchy model, and the connection resources to be adjusted is essentially to perform a bandwidth adjustment judgment on the transport sub-slice according to the client layer-service layer relationship determined by the transport network service hierarchy model, the transport sub-slice bandwidth adjustment instruction, and the connection resources to be adjusted.

[0091] Regarding the above-mentioned judgment operation, it is specifically implemented according to the following process:

[0092] First, obtain the current bandwidth value corresponding to the transport sub-slice, and extract the target bandwidth value to be adjusted from the transport sub-slice bandwidth adjustment instruction.

[0093] Then, compare the current bandwidth value with the target bandwidth value, that is, determine whether the current bandwidth value is greater than or less than the target bandwidth value.

[0094] Accordingly, if the current bandwidth value is less than the target bandwidth value, that is, when the adjustment operation to be performed is to increase the bandwidth of the transport sub-slice, it is necessary to sequentially determine from top to bottom according to the client layer-service layer relationship whether the remaining bandwidth resources of the service layer corresponding to each client layer in the connection resources to be adjusted are not less than the difference between the target bandwidth value and the current bandwidth value; if the current bandwidth value is greater than the target bandwidth value, that is, when the adjustment operation to be performed is to decrease the bandwidth of the transport sub-slice, it is necessary to sequentially determine from top to bottom according to the client layer-service layer relationship whether the sum of the bandwidth resources required by all client layers on each service layer in the connection resources to be adjusted is not greater than the target bandwidth value.

[0095] For ease of understanding, the judgment logics for increasing and decreasing the bandwidth of the transport sub-slice are described below respectively.

[0096] Regarding the judgment for increasing the bandwidth, it is specifically as follows:

[0097] Still taking Figure 5 the transport network service layer model given as an example, it is necessary to sequentially determine from top to bottom according to the client layer-service layer relationship whether the remaining bandwidth resources of the service layer corresponding to each client layer in the connection resources to be adjusted are not less than the difference between the target bandwidth value and the current bandwidth value. Specifically, it is to determine whether the remaining bandwidth resources of the UNI port of L3VPN are not less than the difference between the target bandwidth value and the current bandwidth value, and whether the remaining bandwidth resources of the NNI port corresponding to the tunnel are not less than the difference between the target bandwidth value and the current bandwidth value.

[0098] Furthermore, if the tunnel consists of multiple FlexEChannels connected end to end, the judgment of the remaining bandwidth resources of the tunnel needs to be split into determining whether the remaining bandwidth resources of each segment of FlexEChannel are not less than the difference between the target bandwidth value and the current bandwidth value. If the remaining bandwidth resources of the FlexEChannel are less than the difference between the target bandwidth value and the current bandwidth value, then query whether the remaining bandwidth resources of the service layer FlexEGroupLink of the FLexEChannel are not less than the difference between the target bandwidth value and the current bandwidth value.

[0099] Furthermore, in practical applications, after the vertical judgment is completed, a horizontal judgment can also be performed according to the transport network service layer connection model.

[0100] Specifically, assuming the tunnel is 1+1 protection, that is, the tunnel is like Figure 4The working route and the protection route shown. Then, for each route, it is necessary to sequentially determine whether the remaining bandwidth resource is not less than the difference between the target bandwidth value and the current bandwidth value, that is, to determine whether the remaining bandwidth resources of PE1, PE2, P1, and P2 are not less than the difference between the target bandwidth value and the current bandwidth value respectively.

[0101] The judgment for reducing the bandwidth is as follows:

[0102] Still taking Figure 5 the transport network service hierarchy model given as an example, then it is necessary to sequentially determine whether the sum of the bandwidth resources required by all client layers on each service layer in the connection resources to be adjusted is not greater than the target bandwidth value from top to bottom according to the client layer - service layer relationship, that is, to reduce the large bandwidth of the service layer, it is necessary to ensure that the bandwidth of the service layer after adjustment, that is, after being adjusted to the target bandwidth value, is greater than or equal to the services of all client layers above it.

[0103] For example, in the scenario of L3VPN isolation and tunnel sharing, the tunnel needs to judge the bandwidth of multiple client layers above it. If sharing a tunnel, since there are multiple client layers sharing the service layer tunnel, if the adjusted tunnel bandwidth cannot support the bandwidths of all client layers, the tunnel cannot be reduced, but the bandwidth of the UNI - side interface can be adjusted; if the current transport sub - slice is an exclusive FlexE interface, exclusive tunnel, exclusive L3VPN, that is, a transport sub - slice with a hard isolation attribute, then according to the transport network service hierarchy model, the UNI - side bandwidth, tunnel bandwidth, and FlexEChanne bandwidth can be reduced, and 5G time - slot resources can be released for other services.

[0104] It should be understood that the above examples are only examples listed for better understanding the technical solution of this embodiment and do not serve as the sole limitation of this embodiment.

[0105] Correspondingly, after determining through the above judgment that the transport sub - slice can perform bandwidth adjustment, the operation of adjusting the bandwidth corresponding to the connection resources to be adjusted according to the transport sub - slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model is as follows:

[0106] If the current bandwidth value is less than the target bandwidth value, and the remaining bandwidth resources of the service layer corresponding to each client layer in the connection resources to be adjusted are not less than the difference between the target bandwidth value and the current bandwidth value, then, based on the transport network service connection model, taking the service connection as a unit, and in accordance with the client layer - service layer relationship determined by the transport network service hierarchy model, recursively adjust the bandwidth of the service layer of the connection resources to be adjusted to the target bandwidth value carried in the transport sub - slice bandwidth adjustment instruction in turn; if the current bandwidth value is greater than the target bandwidth value, and the sum of the bandwidth resources required by all client layers on each service layer in the connection resources to be adjusted is not greater than the target bandwidth value, then, based on the transport network service connection model, taking the service connection as a unit, and in accordance with the client layer - service layer relationship determined by the transport network service hierarchy model, recursively adjust the bandwidth of the service layer of the connection resources to be adjusted to the target bandwidth value carried in the transport sub - slice bandwidth adjustment instruction in turn.

[0107] For example, when the transport sub - slice that needs to perform a bandwidth increase operation is a transport sub - slice that exclusively occupies a FlexE interface, an exclusive tunnel, and an exclusive L3VPN, assuming that the tunnel is in a 1 + 1 protection form and the service - layer FlexEChannel has four nodes: PE1, PE2, P1, and P2, the adjustment includes the bandwidth adjustment of all UNI ports involved in the L3VPN, the bandwidth adjustment of the tunnels bound to all UNI ports, the bandwidth adjustment of the service - layer FlexEChannel of the tunnel, and the bandwidth adjustment of each node on the service - layer FlexEChannel.

[0108] Correspondingly, if the current bandwidth value is 10G and the target bandwidth value to be adjusted to is 15G, then each of the above resources that needs to perform a bandwidth adjustment needs to increase a time - slot bandwidth of 5G, and further adjust the bandwidth of the transport sub - slice to 15G.

[0109] It is not difficult to find through the above description that in the transport sub - slice bandwidth adjustment method provided in this embodiment, after determining the transport sub - slice to be adjusted according to the transport sub - slice bandwidth adjustment instruction, by obtaining the transport network service connection model and the transport network service hierarchy model of the transport sub - slice, and then automatically obtaining all the connection resources that need to be adjusted in the transport sub - slice according to the transport sub - slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model. Finally, when it is determined that the transport sub - slice also needs to perform a bandwidth adjustment, adjust the bandwidth corresponding to the connection resources that need to be adjusted, thereby realizing the automatic on - demand adjustment of the transport sub - slice bandwidth. While improving the adjustment efficiency and accuracy of the transport sub - slice bandwidth, it also meets the requirement of the 5G network slice for quickly adjusting the bandwidth on - demand.

[0110] The fourth embodiment of the present application relates to a method for adjusting the bandwidth of a transport sub-slice. The fourth embodiment makes further improvements on the basis of the third embodiment. The main improvement is that an asynchronous method is adopted to achieve batch concurrent adjustment.

[0111] Regarding the method for adjusting the bandwidth of the transport sub-slice involved in this embodiment, when there are multiple transport sub-slices to be adjusted determined by Figure 3 the step S10 shown, for example, from the transport sub-slice TN1 to the transport sub-slice TNi (i is an integer greater than 1), by Figure 6 according to the number of the determined transport sub-slices to be adjusted, taking Figure 6 i as an example, i asynchronous threads are created according to the determined number i. For example, the asynchronous threads AT1 to ATi shown in Figure 6 are created; then, for each transport sub-slice to be adjusted, the operation of adjusting the bandwidth of the transport sub-slice described in the third embodiment is executed through the corresponding asynchronous thread, that is, the operations of Figure 3 the step S20 to the step S50 shown are executed.

[0112] Therefore, the method for adjusting the bandwidth of the transport sub-slice provided in this embodiment adopts an asynchronous method to achieve batch concurrent adjustment according to multiple network elements, thereby greatly improving the bandwidth adjustment efficiency, and further being able to better meet the demand for on-demand bandwidth adjustment of 5G network slices faster.

[0113] In addition, it should be understood that the step division of the above various methods is only for clear description. When implemented, they can be combined into one step or some steps can be split into multiple steps. As long as the same logical relationship is included, it is within the protection scope of this patent; adding insignificant modifications to the algorithm or process or introducing insignificant designs, but not changing the core design of its algorithm and process are within the protection scope of this patent.

[0114] The fifth embodiment of the present application relates to a device for adjusting the bandwidth of a transport sub-slice. As Figure 7 shown, it includes: a determination module 701, a first acquisition module 702, a second acquisition module 703, and an adjustment module 704.

[0115] Among them, a determination module 701 is configured to determine a transmission sub-slice to be adjusted according to a received transmission sub-slice bandwidth adjustment instruction; a first acquisition module 702 is configured to acquire a transmission network service connection model and a transmission network service hierarchy model of the transmission sub-slice; a second acquisition module 703 is configured to acquire connection resources that need to be adjusted in the transmission sub-slice according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model, and the transmission network service hierarchy model; an adjustment module 704 is configured to adjust the bandwidth corresponding to the connection resources that need to be adjusted according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model, and the transmission network service hierarchy model.

[0116] In addition, in another example, before the second acquisition module 703 performs the operation of acquiring the connection resources that need to be adjusted in the transmission sub-slice according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model, and the transmission network service hierarchy model, it needs to first determine the relationship between two adjacent layers of services in the transmission network service hierarchy model, and then obtain the customer layer - service layer relationship.

[0117] Correspondingly, the second acquisition module 703 is specifically configured to extract a network slice service identifier and a transmission sub-slice identifier from the transmission sub-slice bandwidth adjustment instruction; determine all connection resources in the transmission sub-slice according to the transmission network service connection model and the customer layer - service layer relationship; and screen, according to the network slice service identifier, the connection resources in the area corresponding to the transmission sub-slice identifier from the connection resources to obtain the connection resources that need to be adjusted.

[0118] In addition, in another example, the second acquisition module 703 is specifically configured to horizontally acquire all horizontal connection resources in the transmission sub-slice according to the transmission network service connection model; and vertically acquire the connection resources of each horizontal connection resource in the service layer according to the customer layer - service layer relationship to obtain all connection resources in the transmission sub-slice.

[0119] In addition, in another example, a judgment module is further included in the transmission sub-slice bandwidth adjustment device.

[0120] Specifically, the judgment module is configured to judge whether the transmission sub-slice can be adjusted in bandwidth according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service hierarchy model, and the connection resources that need to be adjusted.

[0121] Correspondingly, if it is determined through judgment that the transmission sub-slice can be adjusted in bandwidth, the adjustment module 704 is triggered to perform the operation of adjusting the bandwidth corresponding to the connection resources that need to be adjusted according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model, and the transmission network service hierarchy model.

[0122] In addition, in another example, the determination module is specifically configured to determine whether the transport sub-slice can be bandwidth-adjusted according to the following process:

[0123] Compare the current bandwidth value with the target bandwidth value;

[0124] If the current bandwidth value is less than the target bandwidth value, then sequentially determine from top to bottom according to the customer layer-service layer relationship whether the remaining bandwidth resources of the service layer corresponding to each customer layer in the connection resources to be adjusted are not less than the difference between the target bandwidth value and the current bandwidth value;

[0125] If the current bandwidth value is greater than the target bandwidth value, then sequentially determine from top to bottom according to the customer layer-service layer relationship whether the sum of the bandwidth resources required by all customer layers on each service layer in the connection resources to be adjusted is not greater than the target bandwidth value.

[0126] In addition, in another example, the adjustment module 704 is specifically configured to perform bandwidth adjustment according to the following process:

[0127] If the current bandwidth value is less than the target bandwidth value, and the remaining bandwidth resources of the service layer corresponding to each customer layer in the connection resources to be adjusted are not less than the difference between the target bandwidth value and the current bandwidth value, then, taking the service connection as a unit according to the transport network service connection model, and in accordance with the customer layer-service layer relationship determined by the transport network service hierarchy model, recursively adjust the bandwidth of the service layer of the connection resources to be adjusted to the target bandwidth value carried in the transport sub-slice bandwidth adjustment instruction in sequence;

[0128] If the current bandwidth value is greater than the target bandwidth value, and the sum of the bandwidth resources required by all customer layers on each service layer in the connection resources to be adjusted is not greater than the target bandwidth value, then, taking the service connection as a unit according to the transport network service connection model, and in accordance with the customer layer-service layer relationship determined by the transport network service hierarchy model, recursively adjust the bandwidth of the service layer of the connection resources to be adjusted to the target bandwidth value carried in the transport sub-slice bandwidth adjustment instruction in sequence.

[0129] In addition, in another example, the transport sub-slice bandwidth adjustment device further includes an asynchronous module.

[0130] Specifically, if there are multiple transport sub-slices to be adjusted determined by the determination module 701, the asynchronous module creates corresponding asynchronous threads according to the number of the determined transport sub-slices to be adjusted.

[0131] Correspondingly, for each transmission sub-slice, the above-mentioned first acquisition module 702, second acquisition module 703, judgment module, and adjustment module 704 are triggered by corresponding asynchronous threads to respectively perform the transmission sub-slice bandwidth adjustment operation.

[0132] It is not difficult to find that this embodiment is a device embodiment corresponding to the third or fourth embodiment, and this embodiment can be implemented in cooperation with the third or fourth embodiment. The relevant technical details mentioned in the third or fourth embodiment are still valid in this embodiment. To avoid repetition, they will not be elaborated here. Correspondingly, the relevant technical details mentioned in this embodiment can also be applied to the third or fourth embodiment.

[0133] It is worth mentioning that each module involved in this embodiment is a logical module. In practical applications, a logical unit can be a physical unit, a part of a physical unit, or a combination of multiple physical units. In addition, to highlight the innovative part of this application, units that are not closely related to solving the technical problems proposed in this application are not introduced in this embodiment, but this does not mean that there are no other units in this embodiment.

[0134] The sixth embodiment of this application relates to a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the transmission sub-slice bandwidth adjustment method described in the above method embodiment.

[0135] That is, those skilled in the art can understand that all or part of the steps of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a program. The program is stored in a storage medium, including several instructions for causing a device (which can be a single-chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs and other various media that can store program codes.

[0136] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing this application, and in practical applications, various changes can be made in form and details without departing from the spirit and scope of this application.

Claims

1. A method for adjusting the bandwidth of a transport sub-slice, characterized in that Applied to the transport sub-slice management system, including: Determine the transport sub-slice to be adjusted according to the received transport sub-slice bandwidth adjustment instruction; Obtain the transport network service connection model and the transport network service hierarchy model of the transport sub-slice; Horizontally obtain all horizontal connection resources in the transport sub-slice according to the transport network service connection model; Vertically obtain the connection resources of each horizontal connection resource in the service layer according to the transport network service hierarchy model to obtain all the connection resources in the transport sub-slice; Extract the network slice service identifier and the transport sub-slice identifier from the transport sub-slice bandwidth adjustment instruction; Filter the connection resources in the area corresponding to the transport sub-slice identifier from the connection resources according to the network slice service identifier to obtain the connection resources that need to be adjusted; Adjust the bandwidth corresponding to the connection resources that need to be adjusted according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model.

2. The method for adjusting the bandwidth of a transport sub-slice according to claim 1, characterized in that The step of vertically obtaining the connection resources of each horizontal connection resource in the service layer according to the transport network service hierarchy model to obtain all the connection resources in the transport sub-slice includes: Determine the relationship between adjacent two-layer services in the transport network service hierarchy model to obtain the customer layer - service layer relationship; Vertically obtain the connection resources of each horizontal connection resource in the service layer according to the customer layer - service layer relationship to obtain all the connection resources in the transport sub-slice.

3. The method for adjusting the bandwidth of a transport sub-slice according to claim 1, characterized in that Before adjusting the bandwidth corresponding to the connection resources that need to be adjusted according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model, the method further includes: Judge whether the transport sub-slice can be adjusted in bandwidth according to the transport sub-slice bandwidth adjustment instruction, the transport network service hierarchy model, and the connection resources that need to be adjusted; If the transport sub-slice can be adjusted in bandwidth, execute the step of adjusting the bandwidth corresponding to the connection resources that need to be adjusted according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model.

4. The method for adjusting the bandwidth of a transport sub-slice according to claim 2, characterized in that The step of judging whether the transport sub-slice can be adjusted in bandwidth according to the transport sub-slice bandwidth adjustment instruction, the transport network service hierarchy model, and the connection resources that need to be adjusted includes: Obtain the current bandwidth value corresponding to the transport sub-slice, and extract the target bandwidth value to be adjusted from the transport sub-slice bandwidth adjustment instruction; Compare the current bandwidth value with the target bandwidth value; If the current bandwidth value is less than the target bandwidth value, then judge whether the remaining bandwidth resources of the service layer corresponding to each customer layer in the connection resources that need to be adjusted are not less than the difference between the target bandwidth value and the current bandwidth value from top to bottom according to the customer layer - service layer relationship; If the current bandwidth value is greater than the target bandwidth value, then, according to the customer layer - service layer relationship from top to bottom, determine whether the sum of the bandwidth resources required by all customer layers on each service layer in the connection resources to be adjusted is not greater than the target bandwidth value.

5. The method for adjusting the bandwidth of a transport sub-slice according to claim 4, characterized in that If the transport sub - slice can perform bandwidth adjustment, then adjust the bandwidth corresponding to the connection resources to be adjusted according to the transport sub - slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model, including: If the current bandwidth value is less than the target bandwidth value, and the remaining bandwidth resources of the service layer corresponding to each customer layer in the connection resources to be adjusted are not less than the difference between the target bandwidth value and the current bandwidth value, then, taking the service connection as a unit according to the transport network service connection model, and in accordance with the customer layer - service layer relationship determined by the transport network service hierarchy model, recursively adjust the bandwidth of the service layer of the connection resources to be adjusted to the target bandwidth value carried in the transport sub - slice bandwidth adjustment instruction. If the current bandwidth value is greater than the target bandwidth value, and the sum of the bandwidth resources required by all customer layers on each service layer in the connection resources to be adjusted is not greater than the target bandwidth value, then, taking the service connection as a unit according to the transport network service connection model, and in accordance with the customer layer - service layer relationship determined by the transport network service hierarchy model, recursively adjust the bandwidth of the service layer of the connection resources to be adjusted to the target bandwidth value carried in the transport sub - slice bandwidth adjustment instruction.

6. The method for adjusting the bandwidth of a transport sub-slice according to any one of claims 1 to 5, characterized in that After determining the transport sub - slice to be adjusted according to the received transport sub - slice bandwidth adjustment instruction, the method further includes: If there are multiple determined transport sub - slices to be adjusted, then create asynchronous threads corresponding to the number of the determined transport sub - slices to be adjusted. For each transport sub - slice, execute the steps of transport sub - slice bandwidth adjustment through the corresponding asynchronous thread.

7. A device for adjusting the bandwidth of a transport sub-slice, characterized in that Including: A determination module, configured to determine the transport sub - slice to be adjusted according to the received transport sub - slice bandwidth adjustment instruction. A first acquisition module, configured to acquire the transport network service connection model and the transport network service hierarchy model of the transport sub - slice. A second acquisition module, configured to horizontally acquire all horizontal connection resources in the transport sub - slice according to the transport network service connection model. According to the transport network service hierarchy model, vertically acquire the connection resources of each horizontal connection resource in the service layer to obtain all the connection resources in the transport sub - slice. Extract the network slice service identifier and the transport sub - slice identifier from the transport sub - slice bandwidth adjustment instruction. According to the network slice service identifier, screen the connection resources in the area corresponding to the transport sub - slice identifier from the connection resources to obtain the connection resources to be adjusted. An adjustment module, configured to adjust the bandwidth corresponding to the connection resources to be adjusted according to the transport sub - slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model.

8. A transmission sub-slice management system, characterized in that, Including: At least one processor; And, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the transmission sub-slice bandwidth adjustment method according to any one of claims 1 to 6.

9. A network slice management system, characterized in that, It includes: a slice management system, a radio sub-slice management system, a core sub-slice management system, and a transmission sub-slice management system according to claim 8; The transmission sub-slice management system interacts with network element devices through a southbound interface, and the network element devices respectively interact with the radio sub-slices managed by the radio sub-slice management system and the core sub-slices managed by the core sub-slice management system to connect the radio sub-slices managed by the radio sub-slice management system and the core sub-slices managed by the core sub-slice management system; The transmission sub-slice management system also interacts with the slice management system through a northbound interface to adjust the bandwidth of the transmission sub-slice according to the transmission sub-slice bandwidth adjustment instruction provided by the slice management system.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the transmission sub-slice bandwidth adjustment method according to any one of claims 1 to 6.

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