WO2022048571A1

WO2022048571A1 - Transport sub-slice bandwidth adjustment method and apparatus, system, and storage medium

Info

Publication number: WO2022048571A1
Application number: PCT/CN2021/116041
Authority: WO
Inventors: 张苏静
Original assignee: 中兴通讯股份有限公司
Priority date: 2020-09-02
Filing date: 2021-09-01
Publication date: 2022-03-10
Also published as: BR112022025332A2; CN114205298A

Abstract

Embodiments of the present application relate to the field of communications. Disclosed are a transport sub-slice bandwidth adjustment method and apparatus, a system, and a storage medium. In the present application, after a transport sub-slice to be adjusted is determined according to a transport sub-slice bandwidth adjustment instruction, a transport network service connection model and a transport network service hierarchy model of the transport sub-slice are obtained, then, according to the transport sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model, all connection resources that need to be adjusted in the transport sub-slice are automatically obtained, and finally, when it is determined to perform bandwidth adjustment on the transport sub-slice, bandwidths corresponding to the connection resources that need to be adjusted are adjusted.

Description

Transmission sub-slice bandwidth adjustment method, device, system and storage medium

cross reference

This application is based on the Chinese patent application with the application number "202010908865.3" and the application date is September 2, 2020, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference. Apply.

technical field

The embodiments of the present application relate to the field of communications, and in particular, to a method, apparatus, system, and storage medium for bandwidth adjustment of transmission sub-slices.

Background technique

With the development of communication technology, the types of communication services have gradually increased, and different communication services have huge differences in the requirements for mobility, bandwidth, delay, reliability, security, and non-network performance of operation and charging. If a specific network is established for each communication service, although it can meet the needs of various communication services, the implementation cost is too high; if the communication services with different requirements are carried on the same network, the network will be complicated and the operation and maintenance will be difficult. , and due to the large difference in the requirements of different communication services, the quality of service (Qualiy of Service, QoS for short) of the communication services will also decrease.

The concept of Network Slice (NS) introduced in 5th generation mobile networks (5G) can cope with the differences in network performance requirements of different communication services. Network resources are allocated flexibly, but the existing network slicing solutions mainly focus on core sub-slices and wireless sub-slices, and there is less research on transmission sub-slices, and the on-demand adjustment of transmission sub-slice bandwidth is very complicated and efficient. It is very low, and the probability of manual operation errors is high, which will directly affect the ability of 5G network slicing to adjust bandwidth on demand, and have a direct impact on the promotion of 5G network slicing.

SUMMARY OF THE INVENTION

An embodiment of the present application provides a method for adjusting the bandwidth of a transmission sub-slice, including: determining a transmission sub-slice to be adjusted according to a received transmission sub-slice bandwidth adjustment instruction; acquiring a transmission network service connection model of the transmission sub-slice and transport network service hierarchy model; obtain 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 level model; according to the transport sub-slice The slice bandwidth adjustment instruction, the transport network service connection model and the transport network service hierarchy model adjust the bandwidth corresponding to the connection resource that needs to be adjusted.

The embodiment of the present application further provides a transmission sub-slice bandwidth adjustment device, including: a determination module, configured to determine the transmission sub-slice to be adjusted according to the received transmission sub-slice bandwidth adjustment instruction; a first acquisition module, configured to acquire a transport network service connection model and a transport network service hierarchy model of the transport sub-slice; a second acquisition module configured to adjust the bandwidth of the transport sub-slice according to the instruction, the transport network service connection model and the transport network service hierarchy model , obtain the connection resources that need to be adjusted in the transmission sub-slice; the adjustment module is used to adjust the transmission network service connection model according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model and the transmission network service level model to be adjusted. The bandwidth corresponding to the connection resource is adjusted.

An embodiment of the present application further provides a transmission sub-slice management system, including: a memory connected in communication with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the memory Instructions are executed by the at least one processor to enable the at least one processor to perform the transmit sub-slice bandwidth adjustment method as described above.

The embodiments of the present application also provide a network slice management system, including: a slice management system, a wireless sub-slice management system, a core sub-slice management system, and the above-mentioned transmission sub-slice management system; the transmission sub-slice management system The southbound interface interacts with the network element equipment, and the network element equipment interacts with the wireless sub-slice managed by the wireless sub-slice management system and the core sub-slice managed by the core sub-slice management system respectively, so as to connect the wireless sub-slices The wireless sub-slice managed by the management system and the core sub-slice managed by the core sub-slice management system; the transmission sub-slice management system also interacts with the slice management system through the northbound interface, so as to transmit according to the transmission provided by the slice management system The sub-slice bandwidth adjustment command performs bandwidth adjustment on the transmission sub-slice.

Embodiments of the present application further provide a computer-readable storage medium storing a computer program. When the computer program is executed by the processor, the above-mentioned method for adjusting the bandwidth of the transmission sub-slice is realized.

Description of drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments.

FIG. 1 is a schematic structural diagram of a transmission sub-slice management system provided by a first embodiment of the present application;

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

3 is a flowchart of a method for adjusting the bandwidth of a transmission sub-slice provided by a third embodiment of the present application;

4 is a schematic structural diagram of a transport network service connection model involved in the bandwidth adjustment method for transport sub-slices provided by the third embodiment of the present application shown in FIG. 3;

5 is a schematic structural diagram of a transport network service hierarchy model involved in the bandwidth adjustment method for transport sub-slices provided by the third embodiment of the present application shown in FIG. 3;

6 is a schematic diagram of a method for adjusting the bandwidth of a transmission sub-slice provided by a fourth embodiment of the present application;

FIG. 7 is a schematic structural diagram of an apparatus for adjusting bandwidth of transmission sub-slices provided by a fifth embodiment of the present application.

detailed description

The purpose of the embodiments of the present application is to provide a transmission sub-slice bandwidth adjustment method, device, system and storage medium, aiming at realizing automatic on-demand adjustment of transmission sub-slice bandwidth, so as to improve the adjustment efficiency and accuracy of transmission sub-slice bandwidth, In this way, 5G network slicing needs to quickly adjust bandwidth on demand.

In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clear, each embodiment 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 each embodiment of the present application, many technical details are provided for the reader 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 be realized. The following divisions of the various embodiments are for the convenience of description, and should not constitute any limitation on the specific implementation of the present application, and the various embodiments may be combined with each other and referred to each other on the premise of not contradicting each other.

The fifth-generation mobile communication system introduces the concept of network slicing to cope with the differences in network performance requirements of different communication services. The so-called network slicing refers to dividing the physical network into multiple independent logical networks according to the requirements of different business applications on the number of users, QoS, and bandwidth, that is, each network slice can be regarded as the logic for completing a communication service. The internet. The current 5G network slice is a cross-domain end-to-end slice, and a network slice includes at least a wireless sub-slice, a core sub-slice, and a transmission sub-slice for connecting the wireless sub-slice and the core sub-slice.

Although 5G network slicing can flexibly allocate network resources, flexibly combine network capabilities, and then meet the network performance requirements of different communication services. However, the existing network slicing solutions mainly focus on core sub-slices and wireless sub-slices, and there is little research on transmission sub-slices. On-demand adjustment of transmission sub-slice bandwidth is a must for on-demand adjustment of 5G network slice bandwidth. Condition, since there is currently no solution that can automatically and comprehensively adjust the bandwidth of the transmission sub-slice, the adjustment of the bandwidth of the transmission sub-slice must rely on manual adjustment. However, the network connection provided by the transmission sub-slice is based on The multi-layer connection established by the service layer model of the transport network makes the bandwidth adjustment operation more complicated. For example, 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 UNI port of the L3VPN AC port to adjust the bandwidth, the SR/MPLS tunnel to adjust the bandwidth, and the FlexEChannel of the tunnel service layer to adjust. Bandwidth, if there is no automatic bandwidth adjustment capability, you need to manually find all the resources involved in the transmission sub-slice, and manually adjust the bandwidth in turn. If a transmission sub-slice has 100 connections, each connection has a three-layer client layer service layer relationship. If a connection Involving 5 nodes, the operation that requires manual adjustment requires 1500 (100×3×5) manual operations. This example is the case of simply transmitting sub-slices to adjust the bandwidth. The actual connection of transmitting sub-slices will be more complicated, with tens of thousands of connections. The connection is also normal. From the above example, if the bandwidth for transmitting sub-slices is manually adjusted on a single-node basis, the operation is very complicated, the adjustment efficiency is low, and the error probability of manual operation is high, which will directly affect the ability of 5G network slices to adjust the bandwidth on demand. It has a direct impact on the promotion of 5G network slicing.

The first embodiment of the present application relates to a transmission sub-slice management system, as shown in FIG. 1 , 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, the instructions being executed by the at least one processor 102 to enable the at least one processor 102 to perform the transmission sub-slice bandwidth adjustment method described in any embodiment of the present application.

The memory 101 and the processor 102 are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors 102 and various circuits of the memory 101 together. The bus may also connect together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface between the bus and the transceiver. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium. The data processed by the processor 102 is transmitted on the wireless medium through the antenna, and further, the antenna also receives the data and transmits the data to the processor 102 .

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

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

It should be understood that, in a 5G network slice, each 5G network slice includes at least a wireless sub-slice, a core sub-slice, and a transmission sub-slice for connecting the wireless sub-slice and the core sub-slice. In order to facilitate the management of each 5G network slice, this embodiment provides a network slice management system. As shown in FIG. 2 , the network slice management system provided in this embodiment mainly includes: a network slice management system for managing wireless sub-slices. Wireless sub-slice management system, core sub-slice management system for managing core sub-slices, transport sub-slice management system for managing transport sub-slices, and wireless sub-slice management system, core sub-slice management system and transport sub-slice The slice management system of the slice management system.

Specifically, in the 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.

Further, the network element device interacts with the wireless sub-slice managed by the wireless sub-slice management system and the core sub-slice managed by the core sub-slice management system through the metropolitan area network and wide area network where it is located, so as to connect the The wireless sub-slice managed by the wireless sub-slice management system and the core sub-slice managed by the core sub-slice management system.

In addition, with reference to FIG. 2 , a cloud network composed of wireless sub-slices managed by the wireless sub-slice management system and a cloud network composed of core sub-slices managed by the core sub-slice management system will be described.

As shown in Figure 2, the current 5G wireless RAN architecture usually considers the independent deployment of the central unit (CU in Figure 2) and the distribution unit (DU in Figure 2) to better meet the needs of various scenarios and applications . Therefore, the wireless sub-slice management system for managing wireless sub-slices needs to establish communication connections with the CU and the DU respectively.

The core sub-slice mainly has the functions of the existing core network, which are mainly divided into network protocols (AMF in Figure 2) and user plane functions (UPF in Figure 2). Therefore, the core sub-slice used to manage the core sub-slice The slice management system needs to establish communication connections with UPF and AMF respectively.

Further, with the development of cloud technology and instant messaging 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 network A functional virtualization infrastructure solution (NIFI in Figure 2) and VIM.

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

In addition, the transmission sub-slice management system is further configured to interact with the slice management system through a northbound interface, so as to adjust the bandwidth of the transmission sub-slice according to the transmission sub-slice bandwidth adjustment instruction provided by the slice management system, and the transmission sub-slice according to any embodiment of the present application. The slice bandwidth adjustment method performs bandwidth adjustment on the transmission sub-slice.

In order to enable the transmission sub-slice management system in the network slice management system provided by this embodiment to realize automatic on-demand adjustment of the transmission sub-slice bandwidth, so as to improve the adjustment efficiency and accuracy of the transmission sub-slice bandwidth, so as to meet the needs of 5G network slices Regarding the requirement for fast bandwidth adjustment, the following describes the bandwidth adjustment method of the transmission sub-slice involved in the third embodiment in detail with reference to the system structure given in this embodiment.

The third embodiment of the present application relates to a method for adjusting the bandwidth of a transmission sub-slice. After determining the transmission sub-slice to be adjusted according to a transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model and the transmission network service level of the transmission sub-slice are obtained by acquiring Then, according to the transmission sub-slice bandwidth adjustment instruction, the transport network service connection model and the transport network service hierarchy model, all the connection resources that need to be adjusted in the transmission sub-slice are automatically obtained. Finally, when the bandwidth adjustment of the transmission sub-slice is determined, the The bandwidth corresponding to the connection resources is adjusted, thereby realizing the automatic on-demand adjustment of the transmission sub-slice bandwidth. While improving the adjustment efficiency and accuracy of the transmission sub-slice bandwidth, it also meets the needs of 5G network slices to quickly adjust the bandwidth on demand.

The implementation details of the method for adjusting the bandwidth of the transmission sub-slice in this embodiment are described below. The following content is only provided for the convenience of understanding, and is not necessary for implementing this solution.

The bandwidth adjustment method for transmission sub-slices provided in this embodiment is specifically applied to the management system for transmission sub-slices mentioned in the foregoing embodiments.

The specific process of this embodiment is shown in Figure 3, which specifically includes the following steps:

Step S10: Determine the transmission sub-slice to be adjusted according to the received transmission sub-slice bandwidth adjustment instruction.

Specifically, it can be known from the description of the second embodiment that the slice management system is used to manage the transmission sub-slice management system, so the above-mentioned received transmission sub-slice bandwidth adjustment instruction is from the slice management system.

In addition, it can be seen from the description of the second embodiment that the transmission sub-slice management system interacts with the slice management system through the northbound interface, so the above-mentioned received transmission sub-slice bandwidth adjustment command is specifically received through the northbound interface from the It is extracted from the message or request provided by the slice management system.

In addition, it should be understood that, in order to ensure that the transmission sub-slice management system can receive the transmission sub-slice bandwidth adjustment instruction, when implementing the transmission sub-slice bandwidth adjustment method provided in the original, it is necessary to first determine that the transmission sub-slice management system can pass The northbound interface communicates normally with the slice management system.

In addition, regarding the above-mentioned issuing conditions for transmitting sub-slice bandwidth adjustment instructions, specifically, when the slice management system receives a Service-Level Agreement (Service-Level Agreement) from the user according to the Communication Service Management Function (CSMF) , SLA) triggered bandwidth adjustment instruction, or determined when the load of the transmission sub-slice exceeds the threshold according to the throughput rate of the transmission sub-slice fed back by the transmission sub-slice management system.

Correspondingly, when it is determined that the transmission sub-slice bandwidth adjustment instruction needs to be issued to the transmission sub-slice management system, the transmission sub-slice bandwidth adjustment instruction needs to be generated first according to the bandwidth adjustment requirement corresponding to the SLA of the network slicing service SNSSAI.

For the convenience of subsequent description, this embodiment briefly introduces 5G network slicing.

Specifically, in practical applications, 5G network slicing is usually expressed as NSI, which mainly includes user-side S-NSSAI and network-side NSI.

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

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, so when determining the transmission sub-slice to be adjusted , it is possible to determine a certain part of a certain transmission sub-slice.

Therefore, the transmission sub-slice bandwidth adjustment instruction needs to include at least the network slice service identifier S-NSSAI, the transmission sub-slice identifier TN-NSSI, and the target bandwidth value to be adjusted.

Correspondingly, based on the above description, after receiving the transmission sub-slice bandwidth adjustment instruction, the transmission sub-slice management system can quickly determine this by extracting the network slice service identifier S-NSSAI and the transmission sub-slice identifier TN-NSSI from the instruction. The bandwidth adjustment operation performed for the second time is for the whole transmission sub-slice or for a certain part of the transmission sub-slice.

For example, there are 3 network slicing services, and their identifiers are: SNSSAI-VR-1, SNSSAI-VR-2, SNSSAI-VR-3; the transmission sub-slice TN-NSSI is divided into three parts, which correspond to the above For three network slice services, such as TN-NSSI-1, TN-NSSI-2, and TN-NSSI-3, the value corresponding to the network service slice identifier extracted from the transmission sub-slice bandwidth adjustment instruction is SNSSAI- VR-1, when the value corresponding to the transmission sub-slice identifier is TN-NSSI, the determined transmission sub-slice to be adjusted is specifically the area corresponding to the identifier "1" in the transmission sub-slice whose identifier is TN-NSSI.

It should be understood that the above examples are only examples listed for better understanding of the technical solutions of this embodiment, and are not intended to be the only limitations of this embodiment. In practical applications, the transmission sub-slice bandwidth adjustment command may also It includes the SLA identifier sliceProfileID, slice profile, and information about the user network interface UNI of the AC point on the radio side/core side.

Step S20, acquiring the transport network service connection model and the transport network service hierarchy model of the transport sub-slice.

In order to better understand the bandwidth adjustment method for transport sub-slices provided in this embodiment, this embodiment provides a specific transport network service connection model (as shown in FIG. 4 ) and a specific transport network service hierarchy model (such as shown in Figure 5).

It should be understood that the above examples are only examples listed for better understanding of the technical solutions of this embodiment, and are not intended to be the only limitations of this embodiment. In practical applications, the transmission sub-slices involved in different transmission technologies, 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 be different, but both can be implemented based on the transport sub-slice bandwidth adjustment method provided in this embodiment. on-demand adjustment.

Step S30: Acquire connection resources 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.

Specifically, before step S30 is executed, the client layer service relationship may be determined according to the obtained transport network service layer model.

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

Still taking the service layer model of the transport network shown in FIG. 5 as an example, the service layer located on any layer in FIG. 5 can be regarded as the client layer.

Accordingly, located below the client layer is the service layer.

That is to say, the above-mentioned relationship between the client layer and the service layer is used to describe the upper and lower relationship between two adjacent layers in the service layer model of the transport network.

After obtaining the relationship between the client layer and the service layer based on the service layer model of the transport network, the operations that need to be performed are as follows:

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

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

Specifically, in this embodiment, all connection resources in the transmission sub-slice are determined in a horizontal manner and then in a vertical manner.

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 client layer service layer relationship, vertically obtain the connection resources of each horizontal connection resource in the service layer , and then obtain all the connection resources in the transmission sub-slice.

Taking Figure 4 as an example, suppose that the A-end NE of a connection is PE1 and the Z-end NE is PE2. As can be seen from Figure 4, there are two routes for this connection, one of which can be regarded as a working route, such as PE1— P1-PE2, the other can be regarded as a protection route, such as PE1-P2-PE2.

Among them, PE1 and PE2 are connected boundary nodes, and P1 and P2 are connected intermediate nodes.

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

Correspondingly, if the horizontal connection resource obtained above is for the tunnel layer in the transport network service hierarchy model shown in Go to the corresponding service layer, such as FlexEChannel, and then obtain all the connection resources contained in this layer based on the transport network service connection model given in Figure 4, and finally summarize these acquired connection resources, you can get the entire transport sub-system. The connection resources included in the slice.

(3) According to the network slice service identifier, the connection resources in the area corresponding to the transmission sub-slice identifier are screened from the connection resources to obtain the connection resources that need to be adjusted.

That is, according to the extracted SNSSAI-VR-1, the connection resources in those areas corresponding to the SNSSAI-VR-1 are selected from the connection resources included in the transport sub-slice identified by the TN-NSSI, and the connection resources that need to be adjusted are obtained.

In addition, it is worth mentioning that, in this embodiment, the above-mentioned acquisition process of the connection resource may be to acquire the virtual connection VLINK resource first, and then acquire the corresponding actual connection based on the corresponding relationship between the virtual connection resource and the actual connection resource. resource.

Of course, in practical applications, the actual connection resources may also be obtained directly from the virtual connection resources, which is not limited in this embodiment.

Step S40: Adjust the bandwidth corresponding to the connection resource 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.

Specifically, in practical applications, in order to be able to adjust the connection bandwidth in the transmission sub-slice to be adjusted more reasonably, so that the adjusted transmission sub-slice can work normally. Before step S40 is performed, it is necessary to judge whether the bandwidth adjustment of the transmission sub-slice can be performed according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service level model and the connection resources to be adjusted.

Correspondingly, if it is determined through judgment that bandwidth adjustment can be performed on the transmission sub-slice, step S40 is performed; otherwise, only the bandwidth of the resources that meet the bandwidth adjustment conditions is adjusted according to business needs, and the connection resources that do not meet the bandwidth adjustment conditions are recorded. , so that the adjustment can be made after the bandwidth adjustment condition is satisfied, or some connection resources that satisfy the bandwidth adjustment condition can be selected not to be adjusted.

In addition, in this embodiment, the above-mentioned determination of whether the transmission sub-slice can perform bandwidth adjustment is based on the transmission sub-slice bandwidth adjustment instruction, the transmission network service hierarchy model, and the connection resources to be adjusted. The essence of the operation is to judge the bandwidth adjustment of the transmission sub-slice according to the relationship between the client layer and the service layer determined by the service layer model of the transmission network, the bandwidth adjustment instruction of the transmission sub-slice, and the connection resources to be adjusted.

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

First, the current bandwidth value corresponding to the transmission sub-slice is acquired, and the target bandwidth value to be adjusted to is extracted from the transmission sub-slice bandwidth adjustment instruction.

Then, the current bandwidth value is compared with the target bandwidth value, that is, it is determined whether the current bandwidth value is larger than the target bandwidth value or smaller than the target bandwidth value.

Correspondingly, if the current bandwidth value is less than the target bandwidth value, that is, the bandwidth of the transmission sub-slice needs to be increased during the adjustment operation, then according to the relationship between the client layer and the service layer, it is determined in turn from top to bottom. Whether the remaining bandwidth resource of the service layer corresponding to each client layer in the connection resources to be adjusted is 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 to say, when the adjustment operation needs to be performed, the bandwidth of the transmission sub-slice is reduced, and then according to the relationship between the client layer and the service layer, it is determined from top to bottom that all client layers on each service layer in the connection resources to be adjusted are determined. Whether the sum of the required bandwidth resources is not greater than the target bandwidth value.

For ease of understanding, the following descriptions will be made respectively for the judgment logic for increasing and decreasing the bandwidth of the transmission sub-slice.

For the judgment of increasing the bandwidth, the details are as follows:

Still taking the transport network service hierarchy model given in FIG. 5 as an example, the remaining bandwidth resources of the service layer corresponding to each client layer in the connection resources to be adjusted are judged sequentially from top to bottom according to the relationship between the client layer and the service layer. Whether it is not less than the difference between the target bandwidth value and the current bandwidth value, specifically for judging whether the remaining bandwidth resources of the UNI port of the L3VPN are not less than the difference between the target bandwidth value and the current bandwidth value, the tunnel corresponding Whether the remaining bandwidth resource of the NNI port is not less than the difference between the target bandwidth value and the current bandwidth value.

Further, if the tunnel is composed of multiple FlexEChannels connected end to end, the judgment of the remaining bandwidth resources of the tunnel needs to be divided into judging whether the remaining bandwidth resources of each FlexEChannel are not less than the difference between the target bandwidth value and the current bandwidth value. , if the remaining bandwidth resource of FlexEChannel is less than the difference between the target bandwidth value and the current bandwidth value, query whether the remaining bandwidth resource of the service layer FlexEGroupLink of FLexEChannel is not less than the difference between the target bandwidth value and the current bandwidth value. value.

Further, in practical application, after the vertical judgment is completed, the horizontal judgment can also be performed according to the connection model of the service layer of the transport network.

Specifically, if the tunnel is protected by 1+1, that is, the tunnel has a working route and a protection route as shown in FIG. 4 . Then, for each route, it is necessary to sequentially judge whether the remaining bandwidth resources are not less than the difference between the target bandwidth value and the current bandwidth value, that is, determine whether the remaining bandwidth resources of PE1, PE2, P1 and P2 are not less than the The difference between the target bandwidth value and the current bandwidth value.

For the judgment of reducing the bandwidth, the details are as follows:

Still taking the transport network service hierarchy model given in FIG. 5 as an example, the bandwidth required by all client layers on each service layer in the connection resources to be adjusted is judged sequentially from top to bottom according to the relationship between the client layer and the service layer. Whether the sum of the resources is not greater than the target bandwidth value, that is, to reduce the large bandwidth of the service layer, you must ensure that the bandwidth after the service layer is reduced, that is, after the target bandwidth value is adjusted, the bandwidth is greater than or equal to all client layer services on it.

For example, in the scenario of L3VPN isolation and tunnel sharing, the tunnel needs to determine the bandwidth of multiple client layers on it. If the tunnel is shared, since there are multiple client layers sharing the service layer tunnel, if the adjusted tunnel bandwidth cannot support all clients If the current transport sub-slice is an exclusive FlexE interface, an exclusive tunnel, or an exclusive L3VPN, that is, a transport sub-slice with hard isolation attributes, it can be adjusted according to the transport network The service level model reduces UNI side bandwidth, tunnel bandwidth, FlexEChannel bandwidth, and releases 5G time slot resources for use by other services.

It should be understood that the above examples are only examples listed for better understanding of the technical solutions of the present embodiment, and are not used as the only limitation to the present embodiment.

Correspondingly, after determining that the transmission sub-slice can perform bandwidth adjustment through the above judgment, adjust the required adjustment according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model and the transmission network service level model. The operation of adjusting the bandwidth corresponding to the connection resource is as follows:

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 value, then according to the service connection model of the transport network, take the service connection as a unit, and recursively adjust the bandwidth of the service layer of the connection resource to be adjusted according to the relationship between the client layer and the service layer determined by the service layer model of the transport network. The target bandwidth value carried in the transmission sub-slice bandwidth adjustment instruction; if the current bandwidth value is greater than the target bandwidth value, and the connection resources to be adjusted are among the bandwidth resources required by all client layers on each service layer If the sum is not greater than the target bandwidth value, then according to the transport network service connection model, taking the service connection as a unit, and according to the client layer service layer relationship determined by the transport network service hierarchy model, recursively adjust the connection resources that need to be adjusted in turn. The bandwidth of the service layer is to the target bandwidth value carried in the transmission sub-slice bandwidth adjustment instruction.

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

Correspondingly, if the current bandwidth value is 10G and the target bandwidth value that needs to be adjusted is 15G, then each of the above-mentioned resources requiring bandwidth adjustment needs to increase a 5G time slot bandwidth, and then adjust the bandwidth of the transmission sub-slice. to 15G.

It is not difficult to find from the above description that in the method for adjusting the bandwidth of the transmission sub-slice provided by this embodiment, after determining the transmission sub-slice to be adjusted according to the bandwidth adjustment instruction of the transmission sub-slice, the transmission network service connection model and the transmission network of the transmission sub-slice are obtained by obtaining the transmission sub-slice. The service level model, and then automatically obtains all the connection resources that need to be adjusted in the transport sub-slice according to the bandwidth adjustment instruction of the transport sub-slice, the transport network service connection model and the transport network service level model. The bandwidth corresponding to the connection resources that need to be adjusted is adjusted, so as to realize the automatic on-demand adjustment of the transmission sub-slice bandwidth. While improving the adjustment efficiency and accuracy of the transmission sub-slice bandwidth, it also satisfies the needs of 5G network slicing to quickly adjust the bandwidth on demand. demand.

The fourth embodiment of the present application relates to a method for adjusting bandwidth of transmission sub-slices. The fourth embodiment makes further improvements on the basis of the third embodiment, and the main improvements are: adopting an asynchronous manner to realize batch concurrent adjustment.

In the method for adjusting the bandwidth of the transmission sub-slice involved in this embodiment, there are multiple transmission sub-slices to be adjusted determined in step S10 shown in FIG. 3 , such as the transmission sub-slice TN1 to the transmission sub-slice TNi shown in FIG. 6 . (i is an integer greater than 1), according to the determined number of transmission sub-slices to be adjusted, taking FIG. 6 as an example, the determined number is i to create i asynchronous threads, such as the asynchronous thread AT1 shown in FIG. 6 to the asynchronous thread ATi; then, for each transmission sub-slice to be adjusted, the bandwidth adjustment operation of the transmission sub-slice mentioned in the third embodiment is performed through the corresponding asynchronous thread, that is, the steps S20 to S50 shown in FIG. 3 are performed. operate.

Therefore, the method for adjusting the bandwidth of transmission sub-slices provided in this embodiment adopts an asynchronous method to realize batch concurrent adjustment according to multiple network elements, thereby greatly improving the efficiency of bandwidth adjustment, and thus being able to meet the on-demand adjustment of 5G network slices faster and better. bandwidth requirements.

In addition, it should be understood that the division of steps of the various methods above is only for the purpose of describing clearly, and can be combined into one step or split into some steps during implementation, and decomposed into multiple steps, as long as the same logical relationship is included, all 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 the algorithm and process are all within the protection scope of this patent.

The fifth embodiment of the present application relates to a transmission sub-slice bandwidth adjustment device, as shown in FIG. 7 , including: a determination module 701 , a first acquisition module 702 , a second acquisition module 703 and an adjustment module 704 .

Wherein, the determining module 701 is used for determining the transmission sub-slice to be adjusted according to the received transmission sub-slice bandwidth adjustment instruction; the first acquiring module 702 is used for acquiring the transmission network service connection model and the transmission network of the transmission sub-slice a service hierarchy model; the second acquisition module 703 is configured to acquire 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 ; Adjustment module 704, configured to adjust the bandwidth corresponding to the connection resource to be adjusted according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model and the transmission network service level model.

In addition, in another example, the second obtaining module 703 is executing the bandwidth adjustment instruction according to the transport sub-slice, the transport network service connection model, and the transport network service hierarchy model to obtain the transport sub-slice Before the operation of the connection resources to be adjusted in the slice, it is necessary to first determine the relationship between the services of two adjacent layers in the service layer model of the transport network, and then obtain the relationship between the client layer and the service layer.

Correspondingly, the second obtaining module 703 is specifically configured to extract the network slice service identifier and the transmission sub-slice identifier from the transmission sub-slice bandwidth adjustment instruction; according to the transmission network service connection model and the client layer service layer relationship , determine all the connection resources in the transmission sub-slice; according to the network slice service identifier, filter 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.

In addition, in another example, the second obtaining module 703 is specifically configured to horizontally obtain all horizontal connection resources in the transport sub-slice according to the transport network service connection model; according to the client layer service layer relationship, The connection resources of each horizontal connection resource in the service layer are obtained vertically, and all connection resources in the transmission sub-slice are obtained.

In addition, in another example, the apparatus for adjusting the bandwidth of the transmission sub-slice further includes a judgment module.

Specifically, the judging module is configured to judge whether the transmission sub-slice can perform bandwidth adjustment according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service level model and the connection resources to be adjusted.

Correspondingly, if it is determined by judgment that the transmission sub-slice can perform bandwidth adjustment, the adjustment module 704 is triggered to execute the bandwidth adjustment instruction according to the transmission sub-slice, the transmission network service connection model and the transmission network service hierarchy model. An operation of adjusting the bandwidth corresponding to the connection resource that needs to be adjusted.

In addition, in another example, the judging module is specifically configured to judge whether the transmission sub-slice can perform bandwidth adjustment according to the following process:

comparing the current bandwidth value to the target bandwidth value;

If the current bandwidth value is less than the target bandwidth value, determine whether the remaining bandwidth resources of the service layer corresponding to each client layer in the connection resources to be adjusted are determined in order from top to bottom according to the relationship between the client layer and the service layer. is 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, then according to the relationship between the client layer and the service layer from top to bottom, determine the amount of bandwidth resources required by all client layers on each service layer in the connection resources that need to be adjusted. and is not greater than the target bandwidth value.

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

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 value, then according to the service connection model of the transport network, take the service connection as a unit, and recursively adjust the bandwidth of the service layer of the connection resource to be adjusted according to the relationship between the client layer and the service layer determined by the service layer model of the transport network. the target bandwidth value carried in the transmission 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 the client layers on each service layer in the connection resources to be adjusted is not greater than the target bandwidth value, according to the transmission The network service connection model takes the service connection as a unit, according to the relationship between the client layer and the service layer determined by the service layer model of the transport network, and recursively adjusts the bandwidth of the service layer of the connection resource that needs to be adjusted to the transmission sub-slice bandwidth adjustment instruction. The target bandwidth value carried in .

In addition, in another example, the apparatus for transmitting sub-slice bandwidth adjustment further includes an asynchronous module.

Specifically, if it is determined by the determining module 701 that there are multiple transmission sub-slices to be adjusted, the asynchronous module creates a corresponding number of asynchronous threads according to the determined number of the transmission sub-slices to be adjusted.

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 through the corresponding asynchronous thread to perform the transmission sub-slice bandwidth adjustment operation respectively.

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 related technical details mentioned in the third or fourth embodiment are still valid in this embodiment, and are not repeated here in order to reduce repetition. Correspondingly, the related technical details mentioned in this embodiment can also be applied in the third or fourth embodiment.

It is worth mentioning that all the modules involved in this embodiment are logical modules. In practical applications, a logical unit may be a physical unit, a part of a physical unit, or multiple physical units. A composite implementation of the unit. In addition, in order to highlight the innovative part of the present application, this embodiment does not introduce units that are not closely related to solving the technical problem raised by the present application, but this does not mean that there are no other units in this embodiment.

The sixth embodiment of the present application relates to a computer-readable storage medium storing a computer program. When the computer program is executed by the processor, the method for adjusting the bandwidth of the transmission sub-slice described in the above method embodiments is implemented.

That is, those skilled in the art can understand that all or part of the steps in the method of implementing the above embodiments can be completed by instructing relevant hardware through a program, and the program is stored in a storage medium and includes several instructions to make a device ( It may be a single chip microcomputer, a chip, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present application, and in practical applications, various changes in form and details can be made without departing from the spirit and the spirit of the present application. Scope.

Claims

A transmission sub-slice bandwidth adjustment method, applied to a transmission sub-slice management system, includes:

Determine the transmission sub-slice to be adjusted according to the received transmission sub-slice bandwidth adjustment instruction;

acquiring the transport network service connection model and the transport network service hierarchy model of the transport sub-slice;

According to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model and the transmission network service hierarchy model, obtain the connection resources that need to be adjusted in the transmission sub-slice;

The bandwidth corresponding to the connection resource to be adjusted is adjusted according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model and the transmission network service hierarchy model.
The method for adjusting the bandwidth of a transport sub-slice according to claim 1, wherein, in the step of obtaining the Before the connection resources that need to be adjusted in the slice, the method further includes:

Determine the relationship between two adjacent layers of services in the transport network service hierarchy model, and obtain the relationship between the client layer and the service layer;

The acquiring, according to the transmission sub-slice bandwidth adjustment instruction, the transport network service connection model, and the transport network service hierarchy model, acquires connection resources that need to be adjusted in the transport sub-slice, including:

Extract the network slice service identifier and the transmission sub-slice identifier from the transmission sub-slice bandwidth adjustment instruction;

determining all connection resources in the transport sub-slice according to the transport network service connection model and the client layer service layer relationship;

According to the network slice service identifier, the connection resources in the area corresponding to the transmission sub-slice identifier are selected from the connection resources to obtain the connection resources that need to be adjusted.
The bandwidth adjustment method for a transport sub-slice according to claim 2, wherein the determining all connection resources in the transport sub-slice according to the transport network service connection model and the relationship between the client layer and the service layer, comprising:

According to the transport network service connection model, laterally acquire all the lateral connection resources in the transport sub-slice;

According to the relationship between the client layer and the service layer, vertically acquire the connection resources of each horizontal connection resource in the service layer, and obtain all the connection resources in the transmission sub-slice.
The transmission sub-slice bandwidth adjustment method according to claim 2 or 3, wherein, in the requirement for the requirement according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service connection model and the transmission network service hierarchy model Before the bandwidth corresponding to the adjusted connection resource is adjusted, the method further includes:

According to the transmission sub-slice bandwidth adjustment instruction, the transport network service hierarchy model and the connection resources to be adjusted, determine whether the transmission sub-slice can perform bandwidth adjustment;

If the transmission sub-slice can perform bandwidth adjustment, execute the corresponding connection resource to be adjusted according to the transmission sub-slice bandwidth adjustment instruction, the transport network service connection model and the transport network service level model. Steps to adjust the bandwidth.
The transmission sub-slice bandwidth adjustment method according to claim 4, wherein the transmission sub-slice is determined according to the transmission sub-slice bandwidth adjustment instruction, the transmission network service hierarchy model and the connection resources to be adjusted. Whether bandwidth adjustments are possible, including:

Obtain the current bandwidth value corresponding to the transmission sub-slice, and extract the target bandwidth value that needs to be adjusted from the transmission sub-slice bandwidth adjustment instruction;

comparing the current bandwidth value to the target bandwidth value;

If the current bandwidth value is less than the target bandwidth value, determine whether the remaining bandwidth resources of the service layer corresponding to each client layer in the connection resources to be adjusted are determined in order from top to bottom according to the relationship between the client layer and the service layer. is 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, then according to the relationship between the client layer and the service layer from top to bottom, determine the amount of bandwidth resources required by all client layers on each service layer in the connection resources that need to be adjusted. and is not greater than the target bandwidth value.
The bandwidth adjustment method of the transmission sub-slice according to claim 5, wherein, if the transmission sub-slice can perform bandwidth adjustment, the bandwidth adjustment instruction of the transmission sub-slice, the transmission network service connection model and the The transport network service level model adjusts the bandwidth corresponding to the connection resources to be adjusted, 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 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 value, then according to the service connection model of the transport network, take the service connection as a unit, and recursively adjust the bandwidth of the service layer of the connection resource to be adjusted according to the relationship between the client layer and the service layer determined by the service layer model of the transport network. the target bandwidth value carried in the transmission 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 the client layers on each service layer in the connection resources to be adjusted is not greater than the target bandwidth value, according to the transmission The network service connection model takes the service connection as a unit, according to the relationship between the client layer and the service layer determined by the service layer model of the transport network, and recursively adjusts the bandwidth of the service layer of the connection resource that needs to be adjusted to the transmission sub-slice bandwidth adjustment instruction. The target bandwidth value carried in .
The transmission sub-slice bandwidth adjustment method according to any one of claims 1 to 6, wherein after the transmission sub-slice to be adjusted is determined according to the received transmission sub-slice bandwidth adjustment instruction, the method further comprises: :

If it is determined that there are multiple transmission sub-slices to be adjusted, creating a corresponding number of asynchronous threads according to the determined number of the transmission sub-slices to be adjusted;

For each of the transmission sub-slices, the step of bandwidth adjustment of the transmission sub-slice is performed by a corresponding asynchronous thread.
A transmission sub-slice bandwidth adjustment device, comprising:

a determining module, configured to determine the transmission sub-slice to be adjusted according to the received transmission 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 obtaining module, configured to obtain connection resources 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;

An adjustment module, configured to adjust the bandwidth corresponding to the connection resource 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.
A transmission sub-slice management system, comprising:

at least one processor; and,

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform any one of claims 1 to 7 Transport sub-slice bandwidth adjustment method.
A network slice management system, comprising: a slice management system, a wireless sub-slice management system, a core sub-slice management system, and the transmission sub-slice management system according to claim 9;

The transmission sub-slice management system interacts with network element equipment through a southbound interface, and the network element equipment interacts with wireless sub-slices managed by the wireless sub-slice management system and core sub-slices managed by the core sub-slice management system respectively , to connect the wireless sub-slice managed by the wireless sub-slice management system and the core sub-slice managed by the core sub-slice management system;

The transmission sub-slice management system also interacts with the slice management system through the northbound interface, so as to adjust the bandwidth of the transmission sub-slice according to the transmission sub-slice bandwidth adjustment instruction provided by the slice management system.
A computer-readable storage medium storing a computer program, when the computer program is executed by a processor, the method for adjusting the bandwidth of a transmission sub-slice according to any one of claims 1 to 7 is implemented.