WO2019129033A1

WO2019129033A1 - Transport network subslice management method and device

Info

Publication number: WO2019129033A1
Application number: PCT/CN2018/123814
Authority: WO
Inventors: 陈丽萍; 古渊; 牛小兵
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-12-26
Filing date: 2018-12-26
Publication date: 2019-07-04
Also published as: CN109962806A; CN109962806B

Abstract

A transport network subslice management method and device. The method comprises: a transport network subslice management function receiving a request message instructing a transport network subslice to be assigned or newly created for an end to end (E2E) network slice; the request message comprising an E2E network slice instance requirement; and the transport network subslice management function configuring the E2E network slice instance with the corresponding transport network subslice instance according to the request message.

Description

Transmission network sub-slice management method and device

The present application claims priority to Chinese Patent Application No. PCT Application No.

Technical field

The present disclosure relates to the field of communication network management control, for example, to a transport network sub-slice management method and apparatus.

Background technique

Network slicing is a basic feature of fifth-generation (5G) networks. The goal of network slicing is to allow operators to segment multiple virtual end-to-end networks in a single hardware infrastructure to support different service types. . According to the 5G white paper in the next generation mobile network (NGMN) white paper, a 5G slice should span multiple network domains, including access networks, transport networks, and specific resources in the core network. Each network is sliced in logic. It should be kept isolated and meet the different characteristics of many types of services. Network slicing not only enables operators to network more flexibly, accelerates the deployment of new services, and because the slices are isolated from each other, the failure of one network slice does not affect the communication of other slices.

Standards organizations in various technical fields are actively conducting research and development of 5G standards. The 3rd Generation Partnership Project (3GPP) defines three standard slice types for 5G mobile networks: Enhanced Mobile Enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (uRLLC) and massive internet of things (MIoT), each type of slice for 5G transport networks There are different requirements for performance such as bandwidth and latency, and there can be multiple instances of each type of slice, and the performance requirements between each instance can vary.

As part of the end-to-end network slice, the transport network sub-slice needs to be able to establish a specific connection according to the requirements of end-to-end (E2E) network slicing to ensure the transmission of service network information. From the perspective of the transport network, there is a problem that the granularity of the mobile network service is small compared with the granularity of the transport network service. If each mobile network slice instance is assigned an independent transport network slice instance, the transport network will inevitably be caused. Waste of resources.

How to obtain the E2E network slice requirements for the transport network and establish a transport network sub-slice according to the requirements to support E2E network slicing is also the focus of the research on the standards of the transport network domain. The acquisition of these requirements requires interaction between the E2E network slice management system and the control system of the transport network. This is mentioned in the 3GPP SA5 research report on network slice management. On this basis, it is also hoped to manage the E2E network slice. How the system and the transport network's control system interact, how the transport network management system handles it, and the transport network-related standards provide solutions.

Summary of the invention

The present disclosure proposes a transport network sub-slice management method and apparatus, which can provide a solution for interaction and related control of an E2E network slice management system and a transport network management system.

The present disclosure proposes a transport network sub-slice management method, the method comprising:

The transport network sub-slice management function receives a request message indicating that a transport network sub-slice or a new transport network sub-slice is allocated for the end-to-end E2E network slice; wherein the request message includes an E2E network slice instance requirement;

The transport network sub-slice management function sets a corresponding transport network sub-slice instance for the E2E network slice instance according to the request message.

The present disclosure also proposes a transport network sub-slice management method, the method comprising:

The E2E slice management function carries an E2E network slice instance requirement in a request message indicating that a transport network sub-slice or a new transport network sub-slice is allocated;

The E2E slice management function sends the request message indicating the assignment of the transport network sub-slice or the new transport network sub-slice to the transport network sub-slice management function.

The present disclosure also provides a transport network sub-slice management apparatus, which is disposed in a transport network sub-slice management function, and the apparatus includes:

a first receiving unit, configured to receive a request message indicating that a transport network sub-slice or a new transport network sub-slice is allocated for the end-to-end E2E network slice; wherein the request message includes an E2E network slice instance requirement;

The transport network sub-slice setting unit is configured to set a corresponding transport network sub-slice instance for the E2E network slice instance according to the request message.

The present disclosure also proposes an E2E slice management device, the device comprising:

a transport network sub-slice request unit, configured to carry an E2E network slice instance request in a request message indicating allocation of a transport network sub-slice or a new transport network sub-slice;

The second sending unit is configured to send the request message indicating the allocation of the transport network sub-slice or the new transport network sub-slice to the transport network sub-slice management function.

The present disclosure also provides a management apparatus including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program when the computer program is executed The processing of a method.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,

FIG. 1 is a schematic diagram of a transport network sub-slice management architecture provided by an embodiment; FIG.

2 is a flowchart of establishing an association relationship between an existing transport network sub-slice instance and an E2E network slice instance;

FIG. 3 is a flowchart of establishing a relationship between a new transport network sub-slice instance and an E2E network slice instance according to an embodiment;

4 is a flowchart of de-associating an instance of a transport network sub-slice with an E2E network slice instance according to an embodiment;

FIG. 5 is a flowchart of de-associating another transport network sub-slice instance with an E2E network slice instance according to an embodiment;

FIG. 6 is a flowchart of an E2E network slice management function according to an embodiment for determining an instance of a transport network sub-slice used by an E2E network slice instance.

Detailed ways

The present disclosure proposes a transport network sub-slice management method, the method comprising: step 110 - step 120.

In step 110, the transport network sub-slice management function receives a request message indicating that the transport network sub-slice or the new transport network sub-slice is allocated for the end-to-end E2E network slice; wherein the request message includes an E2E network slice instance requirement;

In step 120, a corresponding transport network sub-slice instance is set for the E2E network slice instance according to the request message.

The transport network sub-slice management function stores a correspondence between the E2E network slice instance and the transport network sub-slice instance during the process of setting the transport network sub-slice instance for the E2E network slice instance; wherein, a transport network sub-slice instance and at least one An E2E network slice instance corresponds.

The E2E network slice instance requirement includes an E2E network slice type, an access point information of an E2E network slice, and a quality of service (QoS) requirement. The QoS requirement includes at least one of information such as bandwidth, delay, and jitter.

The E2E network slice instance requirement further includes at least one of the following contents:

The E2E network slice instance identifier (identifier, ID), protection policy, and priority of the E2E network slice.

Through the solution of the embodiment, the association relationship between the transport network sub-slice and the E2E network slice is established and maintained, so that the single transport network sub-slice instance can provide services for multiple E2E network slice instances, avoiding the granularity and transmission of the mobile network service. The difference between the granularity of the network service causes waste of the network resources of the transport network, and at the same time ensures that the transport network sub-slice instance can provide an effective service for the E2E network slice according to the requirements of the E2E network slice instance.

In this embodiment, the correspondence between the E2E network slice instance and the transport network sub-slice instance can be maintained and managed by the sub-slice information base.

In this embodiment, the method further includes:

Establishing a sub-slice information base for storing relevant information of the sub-slice instance of the transport network; and when the related information of the sub-slice instance of the transport network changes, performing related information of the transport network sub-slice instance in the information base Update.

In this embodiment, the related information of the transport network sub-slice instance includes:

(1) The transport network sub-slice instance ID is uniquely identified within the scope of the transport network sub-slice management function;

(2) transmitting information of the connection service included in the network sub-slice;

The information of the connected service included includes at least one of the following contents

I) a list of connection service IDs;

II) service access point information of multiple connection services;

III) network types of multiple connection services, such as L2VPN or L3VPN;

IV) the connection and its QoS parameters, including the ID, bandwidth and delay of multiple connections;

VI) protection strategy;

(3) transmitting information of the E2E network slice instance supported by the network sub-slice instance;

Through this information, the correspondence between the E2E network slice instance and the transport network sub-slice instance is recorded. A transport network sub-slice instance may correspond to (support) at least one E2E network slice instance. The information is used to record information about at least one E2E network slice instance supported by the transport network sub-slice instance;

The information about the supported E2E network slice instance includes:

E2E network slice instance ID list, multiple E2E network slice types, and access point information of multiple E2E network slices;

The E2E network slice instance ID list indicates IDs of all E2E network slice instances currently supported by the transport network sub-slice instance; and one transport network sub-slice instance may provide services for at least one E2E network slice instance. The plurality of E2E network slice types represent types of E2E network slices supported by the transport network sub-slice instance, such as eMBB, uRLLC, and MIoT. Access point information of multiple E2E network slices, including information such as the accessed network element IP address and the type of access network element.

The related information of the transport network sub-slice instance further includes at least one of the following contents:

(1) transmitting service point information of the network sub-slice;

The service access point information includes a service access point ID and a bandwidth.

(2) the type of E2E network slice that can be supported;

(3) Information of the virtual network used.

The information of the virtual network used includes at least one of the following contents:

I) a list of virtual network IDs;

II) slice types supported by multiple virtual networks;

When a transport network sub-slice instance needs to use multiple virtual networks, these virtual networks must be able to support the above E2E network slice type.

(1) Transport network sub-slice service level.

In this embodiment, the step of setting the corresponding transport network sub-slice for the E2E network slice instance according to the request message in the step 120 includes: Step 121-Step 123.

In step 121, when the request message is a request message indicating that a transport network sub-slice is allocated, the transport network sub-slice management function performs sub-slice selection in the transport sub-slice information base according to the E2E network slice instance requirement;

In step 122, if the appropriate sub-slice can be selected, the appropriate transport network sub-slice instance is selected as the transport network sub-slice instance corresponding to the E2E network slice;

The selected transport network sub-slice instance may have been used to support other E2E network slice examples by which a transport network sub-slice instance may be used to support at least one E2E network slice instance.

In step 123, if the appropriate sub-slice cannot be selected, or when the request message is a request message for creating a new transport network sub-slice, a new transport network sub-slice is created according to the E2E network slice instance requirement. Example.

In this embodiment, in the step 121, selecting an appropriate transport network sub-slice instance in the transport sub-slice information base according to the E2E network slice instance requirement includes at least one of the following:

Selecting a transport network sub-slice instance supporting the E2E network slice type in the transport network sub-slice information base according to the E2E network slice type in the E2E network slice instance requirement;

Comparing the service access point list in all service access points and transport network sub-slice information in the E2E network slice instance requirement, ensuring that the service and access point list of the selected sub-slice information of the transport network sub-slice instance includes E2E All service access points in the network slice instance requirement;

Comparing the QoS requirements of the E2E network slice instance and the QoS parameters of the transport network sub-slice instance, determining that the QoS parameters of the transport network sub-slice instance can meet the QoS requirements of the E2E network slice instance;

The protection policy required to determine the E2E network slice is the same as the protection policy of the connection service in the transport network sub-slice instance.

In this embodiment, the example of setting the appropriate transport network sub-slice instance to the transport network sub-slice corresponding to the E2E network slice includes:

The transport network sub-slice management function adds a new E2E network slice instance to the E2E network slice instance supported by the transport network sub-slice instance;

The transport network sub-slice management function sends the selected transport network sub-slice instance ID and related information to the E2E slice management function.

In this embodiment, the creating a new transport network sub-slice instance according to the E2E network slice instance requirement includes:

The transport network sub-slice management function assigns a unique identifier within the functional management scope of the transport network sub-slice instance;

Create a new transport network sub-slice instance.

The establishing a new transport network sub-slice instance includes: selecting a virtual network supporting the E2E network slice type in an existing virtual network or creating a new virtual network according to the service access point and the QoS information request, and On the selected virtual network, a new connection service is created according to the QoS requirement; or the new transport network sub-slice instance is established to create a new connection service according to the QoS requirement on the physical network.

In this embodiment, after the creating a new transport network sub-slice instance according to the E2E network slice instance requirement, the method further includes:

When the request message received by the transport network sub-slice management function includes the ID of the E2E network slice, the transport network sub-slice management function establishes an association relationship between the transport network sub-slice instance and the E2E network slice instance, and transmits the transport sub-slice instance. The ID is sent to the E2E slice management function. or

When the ID of the E2E network slice is not included in the request message received by the transport network sub-slice management function, the transport network sub-slice management function sends the detailed information of the transport network sub-slice instance to the E2E slice management function.

In this embodiment, the method further includes:

The transport network sub-slice management function receives a notification message notifying the E2E network slice instance demand change or a request message for updating the transport network sub-slice; wherein the message includes a new requirement of the E2E network slice;

According to the received message, corresponding processing is performed on the corresponding transport network sub-slice instance.

The performing the corresponding processing on the corresponding transport network sub-slice instance includes:

Updating the transport network sub-slice instance corresponding to the E2E network slice instance according to the new requirement of the E2E network slice instance;

The example of the transport network sub-slice corresponding to the E2E network slice instance is updated according to the new requirement of the E2E network slice instance, including:

Establishing an association relationship between the transport network sub-slice instance and the E2E network slice instance according to the E2E network slice instance ID in the new requirement;

According to the QoS requirements of the E2E network slice instance in the new requirement, the resources of the transport network sub-slice instance are correspondingly increased or decreased; or

Select another transport network sub-slice or create a new transport network sub-slice and set to support the E2E network slice instance; and set the association relationship between the newly selected or created transport network sub-slice instance and the E2E network slice instance, and delete the original The association between the transport network sub-slice instance and the E2E network slice instance; and when the original transport network sub-slice instance that deletes the association does not support other E2E network slices, the resources occupied by the transport network sub-slice instance are released.

In this embodiment, the method further includes:

The transport network sub-slice management function receives a notification message sent by the E2E slice management function to notify that the E2E network slice instance has been or is about to be deleted; or receives a request message for deleting the transport network sub-slice sent by the E2E slice management function;

According to the received message, the corresponding deletion processing is performed on the transport network sub-slice instance corresponding to the E2E network slice instance.

In this embodiment, performing the corresponding deletion processing on the transport network sub-slice instance corresponding to the E2E network slice instance includes:

Querying the information of the transport network sub-slice instance supporting the E2E network slice instance or the transport network sub-slice instance requesting the deletion in the sub-slice information base, and confirming whether the transport network sub-slice instance supports multiple E2E network slice instances;

When the transport network sub-slice instance does not support other E2E network slice instances, deleting the information of the transport network sub-slice instance and releasing the network resources occupied by the transport network sub-slice instance;

When the transport network sub-slice instance further supports other E2E network slice instances, the association relationship between the transport network sub-slice instance and the E2E network slice instance is deleted in the information of the transport network sub-slice.

The embodiment further provides a transport network sub-slice management method, where the method includes: Step 210 - Step 240.

In step 210, the E2E slice management function carries the information of the E2E network slice instance in the request message for requesting the allocation of the transport network sub-slice; the information of the E2E network slice instance includes: the E2E network slice type, and the E2E network slice connection. Entry information, and QoS requirements;

In step 220, the E2E slice management function sends the request message for requesting the distribution network sub-slice to the transport network sub-slice management function.

The information about the E2E network slice instance further includes:

E2E network slice instance ID.

After the request message of the request to allocate the transport network sub-slice is sent to the transport network sub-slice management function, the method further includes:

In step 230, the E2E slice management function receives detailed information of the transport network sub-slice instance sent by the transport network sub-slice management function;

In step 240, the E2E slice management function determines, according to the detailed information, an E2E network slice instance ID that needs to be supported by the transport network sub-slice.

In this embodiment, the E2E slice management function sends a notification message that the E2E network slice instance has been or is about to be deleted to the transport network sub-slice management function when the E2E network slice instance has been deleted or is about to be deleted.

In this embodiment, the E2E network slice management function performs the following processing:

1) The E2E network slice management function sends a request to allocate or establish a transport network sub-slice, and the request carries the information of the E2E network slice instance, including at least the type of the E2E network slice, the access point information of the E2E network slice, and the QoS requirement (bandwidth) , delay and jitter, etc.). In an embodiment, the above information includes an E2E network slice instance ID.

2) The E2E network slice management function receives the information of the assigned or established transport network sub-slices. The specific information is divided into two types:

a. Only the simple information of the transport network sub-slice instance is included, specifically the ID of the transport network sub-slice instance, and the service access point information of the transport network sub-slice.

b. including detailed information of the transport network sub-slice instance, the information may be an ID including a transport network sub-slice instance, a service access point information of a transport network sub-slice, an E2E network slice type that can be supported, and a virtual network used Information and information about the connection services included. as well as

3) If the E2E network slice management function receives the detailed information of the transport network sub-slice, the E2E network slice management function may further determine the E2E network slice instance ID that the transport network sub-slice needs to support, for example, after creating an E2E network slice instance. Associate the newly created E2E network slice instance with the transport network sub-slice instance. The E2E network slice management function then sends a request to update the transport network sub-slice instance, carrying the E2E network slice instance ID supported by the transport network sub-slice instance.

The E2E network slice management function globally identifies the transport network sub-slice instance by using the transport network sub-slice management function ID and the transport network sub-slice instance ID, and establishes an E2E network slice instance, a transport network sub-slice instance, and other sub-members in the E2E network slice management function. The association of slices, an E2E network slice can be served by at least one transport network sub-slice.

The following describes the specific implementation scenarios.

First, a transport network sub-slice management architecture provided by this embodiment is introduced.

As shown in Figure 1, the transport network sub-slice management architecture, the software defined network (SDN) controller is configured with different user contexts (Client Context), and the SDN controller can pass the virtualization process according to different Client Contexts. Virtually abstract the transport network resources into different virtual networks for users corresponding to Client Contex. For example, Client Context1, Client Context 2, and Client Context 3 can be used to virtual abstract virtual networks VN1, VN2, and VN3, respectively. The network can be used to carry different types of mobile network E2E slices. The transport network sub-slice management function establishes a transport network sub-slice information base for storing information of all transport network sub-slices in the management domain of the management function. The transport network needs to establish different service connections on the corresponding virtual network according to the type of E2E network slice to provide connection services for different instances of this type of E2E network slice. The existing SDN controller application programming interface (API) is adopted between the transmission network sub-slice management function and the SDN controller. The following embodiments are all described based on the architecture shown in FIG. 1.

Embodiment 1:

As shown in Figure 2, the process of using an existing transport network sub-slice instance and establishing an association with an E2E network slice instance is as follows:

(1) The E2E network slice management function sends a request message to the transport network sub-slice management function to indicate the allocation of the transport network sub-slice, the ID of the E2E network slice, the E2E network slice service type that needs to be supported, and the access point that requires the E2E network slice. Information and information such as QoS requirements for the required connections.

(2) The transport network sub-slice management function selects the transport network sub-slice instance that satisfies the requirement in the transport slice information base according to the requirements of the E2E network slice instance. The slice selection process includes:

a. Select a transport network sub-slice instance that supports the E2E network slice type in the transport network sub-slice information base according to the E2E network slice type.

b. Compare the service access point list in all service access points and transport network sub-slice information in the E2E network slice instance requirement, and ensure that the service and access point list of the selected transport network sub-slice instance includes the E2E network slice instance. All service access points in demand.

c. Comparing the QoS requirements of the transport network E2E network slice instance and the QoS parameters of the transport network sub-slice instance, including whether the bandwidth is sufficient and whether the delay is satisfied, etc., determining that the QoS parameters of the selected transport network sub-slice instance satisfy the requirement. as well as

d. The protection policy required to determine the E2E network slice is the same as the protection policy of the connection service in the transport network sub-slice instance.

(3) The transport network sub-slice management function sends a request for updating the connection service to the SDN controller to which the virtual network used by the transport network sub-slice instance belongs, carrying the information of the service access point to be added and the required connection characteristics and the like.

(4) The SDN controller corresponding to the virtual network indicates that the network edge node corresponding to the virtual network updates the connection, and the related information of the newly added service access point is configured to the corresponding network edge node, and is bound to the connection. This process is implemented by a multi-layer controller when the network is under the multi-layer multi-domain network structure of the transport network.

(5) The transport network sub-slice management function adds information such as the ID of the new E2E network slice instance to the E2E network slice instance corresponding to the transport network sub-slice instance. as well as

(6) The transport network sub-slice management function sends the transport network sub-slice instance ID to the E2E network slice management system.

Embodiment 2:

As shown in Figure 3, the process of adding a transport network sub-slice instance and establishing an association relationship with the E2E network slice instance is as follows:

(1) The E2E network slice management function sends a request message to the transport network sub-slice management function to indicate the allocation of the transport network slice, the ID of the E2E network slice, the type of service to be supported, the access point information of the E2E network, and the required connection. Information such as QoS requirements.

(2) The transport network sub-slice management function does not select the transport network sub-slice instance that satisfies the requirement in the transport slice information base according to the requirements of the E2E network slice instance, wherein the selection process is the same as that in the first embodiment.

(3) Transport network sub-slice management function The transport network sub-slice management function assigns a unique ID to the transport network sub-slice instance, and selects a corresponding virtual network according to the service type of the supported E2E network slice, and gives the SDN to which the virtual network belongs. The controller sends a request to create a connection service, where the request carries the service access point of the desired connection and information such as connection characteristics.

(4) The SDN controller corresponding to the virtual network establishes a new connection on the network resource corresponding to the virtual network, and feeds back the connection ID and connection related information to the transport network sub-slice management function. If the process is under the multi-layer multi-domain network structure of the transport network, it is implemented by a multi-layer controller.

(5) The transport network sub-slice management function creates information of the transport network sub-slice instance in the transport network sub-slice information base, including the association relationship between the transport network sub-slice instance and the E2E network slice instance, and the information may include: a transport network sub-network The slice instance ID, the E2E network slice instance ID, the ID of the virtual network (VN) used, the ID of the connected service included, and the like. as well as

Embodiment 3:

As shown in FIG. 4, when the transport network sub-slice instance is shared by multiple E2E network slice instances, the process of associating the transport network sub-slice instance with the E2E network slice instance is as follows:

(1) The E2E network slice management function sends a message to the transport network sub-slice management function to indicate that the E2E network slice instance has been or will be deleted.

(2) The transport network sub-slice management function queries the transport network sub-instance in the transport network information base to support the transport network sub-slice instance of the E2E network slice instance, and determines that the transport network sub-slice instance supports other E2E network slice instances at the same time.

(3) The transport network sub-slice management function sends a request for updating the connection service to the corresponding SDN controller, and is used to delete the service access point information corresponding to the E2E network slice instance.

(4) The SDN controller deletes the service access point corresponding to the E2E network slice instance, and releases the binding relationship with the connection. If the process is under the multi-layer multi-domain network structure of the transport network, it is implemented by a multi-layer controller. as well as

(5) The transport network sub-slice management function deletes the information of the E2E network slice instance in the E2E network slice instance supported by the transport network sub-slice instance in the transport network sub-slice information base.

Embodiment 4:

As shown in FIG. 5, when the transport network sub-slice instance is not shared, the process of associating the transport network sub-slice instance with the E2E network slice instance is as follows:

(2) The transport network sub-slice management function queries the transport network sub-instance in the transport network information base to support the transport network sub-slice instance of the E2E network slice instance, and determines that the transport network sub-slice instance is currently serving only the E2E network slice instance.

(3) The transport network sub-slice management function sends a request to delete the connection to the corresponding SDN controller.

(4) The SDN controller releases the network resources occupied by all connections of the transport network sub-slice instance according to the received information. as well as

(5) The transport network sub-slice management function deletes the information of the transport network sub-slice instance in the transport network sub-slice information base.

Embodiment 5:

The operator can pre-plan the required transport network sub-slice instances according to the requirements of the 5G mobile network E2E network slicing. Based on the scenario, as shown in FIG. 6, the process of establishing an association relationship between the E2E network slice instance and the transport network slice instance is as follows:

(1) The E2E network slice management function sends a request to create a transport network sub-slice to the transport network sub-slice management function, carrying the type of E2E network slice instance required to be supported, the service access point, and the QoS requirements of the required connection (including bandwidth) , delay and delay jitter, etc.).

(2) The transport network sub-slice management function assigns a unique identifier in the function management scope to the transport network sub-slice instance, and sends a request to the SDN controller to create a new transport network sub-slice instance according to the received demand. In an embodiment, the step includes:

I) Create a new virtual network based on the service access point and the QoS information request. as well as

II) Create a new connection service based on QoS requirements on the created virtual network.

(3) The transport network sub-slice management function sends detailed information such as the transport network sub-slice ID to the E2E network slice management function.

(4) The E2E network slice management function creates a new E2E network slice instance, determines to use the above-mentioned transport network slice instance, and then sends a message to the transport network sub-slice management function to update the specified transport network sub-slice instance information, and carries the transport network. Slice supported E2E network slice instance ID. as well as

(5) The transport network sub-slice management system adds the E2E network slice information associated with the transport network sub-slice in the transport network sub-slice information base.

For E2E slices, the transport network slice is a component of the E2E slice, so the transport network slice may also be referred to as a transport network sub-slice. For the transport network, the transport network sub-slice is a slice of the transport network, and the slice of the transport network may be a recursively contained relationship, and the slice that is recursively included is also a sub-slice of the parent slice, where the parent slice corresponds to the The E2E network slice, the management method of the transfer sub-slice is also applicable to such a scenario.

The embodiment further provides a transport network sub-slice management device, which is disposed in the transport network sub-slice management function, and the device includes:

The first receiving unit is configured to receive a request message indicating that the transport network sub-slice or the new transport network sub-slice is allocated for the end-to-end E2E network slice; wherein the request message includes an E2E network slice instance requirement;

In this embodiment, the E2E network slice instance requirement includes an E2E network slice type, an access point information of an E2E network slice, and a QoS requirement.

In this embodiment, the E2E network slice instance requirement further includes at least one of the following contents:

The E2E network slice instance identifies the ID, protection policy, and priority of the E2E network slice.

In this embodiment, the device further includes:

a sub-slice information base management unit, configured to establish a sub-slice information base, where the sub-slice information base is used to store related information of the transport network sub-slice instance; and, when the related information of the transport network sub-slice instance changes, the information is The relevant information of the transport network sub-slice instance in the library is updated.

The transport network sub-slice instance ID is a unique identifier within the scope of the transport network sub-slice management function;

Transmitting information about the connection service included in the network sub-slice;

The information of the E2E network slice instance supported by the transport network sub-slice instance.

The information about the supported E2E network slice instance includes:

The E2E network slice instance ID list, the types of multiple E2E network slices, the access point information of multiple E2E network slices, and the QoS requirements of multiple E2E network slices.

The E2E network slice instance ID list indicates IDs of all E2E network slice instances currently supported by the transport network sub-slice instance.

The service access point information of the transport network sub-slice, the E2E network slice type that can be supported, and the information of the virtual network used.

In this embodiment, the transport network sub-slice setting unit includes a transport network sub-slice selection module, a transport network sub-slice creation module, and a transport network sub-slice setting module.

The transport network sub-slice selection module is configured to: when the request message is a request message indicating that a transport network sub-slice is allocated, the transport network sub-slice management function performs sub-slice selection in the transport sub-slice information base according to the E2E network slice instance requirement. .

The transport network sub-slice setting module is configured to set an appropriate transport network sub-slice instance to be the transport network sub-slice instance corresponding to the E2E network slice if the appropriate sub-slice can be selected.

The transport network sub-slice creation module is configured to create a new transport network sub-slice instance according to the E2E network slice instance requirement if the appropriate sub-slice cannot be selected.

The transport network sub-slice setting module is configured to set a transport network sub-slice instance newly created by the transport network sub-slice creation module to a transport network sub-slice instance corresponding to the E2E network slice.

The transport network sub-slice creation module is further configured to create a new transport network sub-slice instance according to the E2E network slice instance requirement when the request message is a request message for creating a new transport network sub-slice.

In this embodiment, the transport network sub-slice selection module performs the selection of a suitable transport network sub-slice instance in the transport sub-slice information base according to the E2E network slice instance requirement according to at least one of the following manners:

In this embodiment, the transport network sub-slice setting unit sets the appropriate transport network sub-slice instance as the transport network sub-slice instance corresponding to the E2E network slice, and includes: the transport network sub-slice management function notification sub-slice information base management unit Adding a new E2E network slice instance to the E2E network slice instance supported by the transport network sub-slice instance;

The transport network sub-slice management apparatus further includes: a first sending unit;

The first sending unit is configured to send the selected transport network sub-slice instance ID and related information to the E2E slice management function.

In this embodiment, the transport network sub-slice creation module creates a new transport network sub-slice instance according to the E2E network slice instance requirement, including:

Create a new transport network sub-slice instance.

The establishing a new transport network sub-slice instance includes: selecting an appropriate virtual network supporting the E2E network slice type in an existing virtual network or creating a new virtual network according to the service access point and the QoS requirement request, and On the selected or newly created virtual network, a new connection service is created according to the QoS requirement; or the new transport network sub-slice instance is established to create a new connection service according to the QoS requirement on the physical network.

In this embodiment, the transport network sub-slice setting module sets the newly created transport network sub-slice instance to the transport network sub-slice instance corresponding to the E2E network slice, including:

In this embodiment, the first receiving unit is further configured to: receive a notification message notifying the E2E network slice instance requirement change or update the request message of the transmission network sub-slice; wherein the message includes a new requirement of the E2E network slice;

The transport network sub-slice setting unit is further configured to perform corresponding processing on the corresponding transport network sub-slice instance according to the received message.

In this embodiment, the transmitting network sub-slice setting unit performs corresponding processing on the corresponding transport network sub-slice instance, including:

Update the transport network sub-slice instance corresponding to the E2E network slice instance according to the new requirement of the E2E network slice instance;

In this embodiment, the apparatus further includes: a deletion processing unit,

The first receiving unit is further configured to: receive a notification message notifying that the E2E network slice instance has been or is about to be deleted, or delete a request message of the transport network sub-slice;

The deletion processing unit is configured to perform a corresponding deletion process on the transport network sub-slice instance corresponding to the E2E network slice instance according to the received message.

Querying the information of the transport network sub-slice instance supporting the E2E network slice instance or the transport network sub-slice instance requested to be deleted in the sub-slice information base, and confirming whether the searched transport network sub-slice instance supports multiple E2E network slice instances;

The embodiment further provides an E2E slice management device, where the device includes:

The transport network sub-slice request unit is configured to carry the E2E network slice instance requirement in the request message indicating the allocation of the transport network sub-slice or the new transport network sub-slice.

In this embodiment, the E2E network slice instance requirements include: an E2E network slice type, an access point information of an E2E network slice, and a QoS requirement.

In this embodiment, the device further includes: a second receiving unit and a setting unit;

The second receiving unit is configured to: after transmitting the request message indicating the allocation of the transport network sub-slice or the new transport network sub-slice to the transport network sub-slice management function, receive the transport network sub-slice sent by the transport network sub-slice management function Detailed information of the instance;

The setting unit is configured to determine, according to the received detailed information, an E2E network slice instance ID that needs to be supported by the transport network sub-slice; and send an update transport network sub-slice after determining an E2E network slice instance that needs to be supported by the transport network sub-slice Message.

In this embodiment, the information about the E2E network segment instance further includes at least one of the following: an E2E network slice instance ID, a protection policy, and a priority of the E2E network slice.

In this embodiment, the second receiving unit is further configured to: when the information of the E2E network slice instance includes the E2E network slice instance ID, receive simple information of the transport network sub-slice instance sent by the transport network sub-slice management function; The simple information includes: the ID of the transport network sub-slice instance and the information of the service access point.

In this embodiment, the transport network sub-slice requesting unit is further configured to notify the E2E network slice instance that the E2E network slice instance has been or is about to be deleted, or delete the E2E network slice corresponding to the E2E network slice instance. The request message for transmitting the network sub-slice is sent to the transport network sub-slice management function.

In this embodiment, the transport network sub-slice requesting unit is further configured to send a notification message for transmitting an E2E network slice instance requirement change or a request message for updating a transport network sub-slice to the transport network when the demand of the E2E network slice changes. A slice management function, wherein the message sent includes a new requirement of an E2E network slice instance.

The embodiment further provides a management device, including a memory, a processor, and a computer program stored on the memory and operable on the processor, where the processor implements the computer program to implement the embodiment Any method.

Claims

A transport network sub-slice management method includes:

The transport network sub-slice management function receives a request message indicating that a transport network sub-slice or a new transport network sub-slice is allocated for the end-to-end E2E network slice; wherein the request message includes an E2E network slice instance requirement;

The transport network sub-slice management function sets a corresponding transport network sub-slice instance for the E2E network slice instance according to the request message.
The transport network sub-slice management method according to claim 1, wherein

The E2E network slice instance requirements include: an E2E network slice type, an access point information of an E2E network slice, and a quality of service QoS requirement.
The transport network sub-slice management method according to claim 2, wherein

The E2E network slice instance requirement further includes at least one of the following contents:

The E2E network slice instance identifies the ID, protection policy, and priority of the E2E network slice.
The transport network sub-slice management method according to claim 1, further comprising:

A sub-slice information base is created, and the sub-slice information base is used to store related information of the transport network sub-slice instance.
The transport network sub-slice management method according to claim 4, wherein

The related information of the transport network sub-slice instance includes:

The transport network sub-slice instance identification ID is a unique identifier within the scope of the transport network sub-slice management function;

Transmitting information about the connection service included in the network sub-slice;

The information of the E2E network slice instance supported by the transport network sub-slice instance;

The information about the supported E2E network slice instance includes:

E2E network slice instance ID list, multiple E2E network slice types, and access point information of multiple E2E network slices, QoS requirements of multiple E2E network slices;

The E2E network slice instance ID list represents IDs of all E2E network slice instances currently supported by the transport network sub-slice instance.
The transport network sub-slice management method according to claim 5, wherein

The E2E network slice instance requirement further includes at least one of the following contents:

The service access point information of the transport network sub-slice, the E2E network slice type that can be supported, and the information of the virtual network used.
The transport network sub-slice management method according to claim 1, wherein the setting, according to the request message, the corresponding transport network sub-slice instance for the E2E network slice instance comprises:

When the request message is a request message indicating that a transport network sub-slice is allocated,

The transport network sub-slice management function performs sub-slice selection in the transport sub-slice information base according to the E2E network slice instance requirement;

In the case that a suitable sub-slice can be selected, the appropriate transport network sub-slice instance is selected as the transport network sub-slice instance corresponding to the E2E network slice;

In the case that the appropriate sub-slice cannot be selected, a new transport network sub-slice instance is created according to the E2E network slice instance requirement, and the newly created transport network sub-slice instance is set as the transport network sub-slice instance corresponding to the E2E network slice; or

When the request message is a request message for creating a new transport network sub-slice,

The transport network sub-slice management function creates a new transport network sub-slice instance according to the E2E network slice instance requirement, and sets the newly-created transport network sub-slice instance as the transport network sub-slice instance corresponding to the E2E network slice.
The transport network sub-slice management method according to claim 7, wherein

Performing the method according to the E2E network slice instance requirement to select an appropriate transport network sub-slice instance in the transport sub-slice information base according to at least one of the following manners:

Selecting a transport network sub-slice instance supporting the E2E network slice type in the transport network sub-slice information base according to the E2E network slice type in the E2E network slice instance requirement;

Comparing the service access point list in all service access points and transport network sub-slice information in the E2E network slice instance requirement, ensuring that the service and access point list of the selected sub-slice information of the transport network sub-slice instance includes E2E All service access points in the network slice instance requirement;

Comparing the QoS requirements of the E2E network slice instance and the QoS parameters of the transport network sub-slice instance, determining that the QoS parameters of the transport network sub-slice instance can meet the QoS requirements of the E2E network slice instance;

The protection policy required to determine the E2E network slice is the same as the protection policy of the connection service in the transport network sub-slice instance.
The transport network sub-slice management method according to claim 8, wherein

The example of setting the appropriate transport network sub-slice instance to the transport network sub-slice corresponding to the E2E network slice includes:

The transport network sub-slice management function adds a new E2E network slice instance to the E2E network slice instance supported by the transport network sub-slice instance;

The transport network sub-slice management function sends the selected transport network sub-slice instance ID and related information to the E2E slice management function.
The transport network sub-slice management method according to claim 7, wherein

The creating a new transport network sub-slice instance according to the E2E network slice instance requirement includes:

The transport network sub-slice management function assigns a unique identifier within the management scope of the transport network sub-slice management function to the transport network sub-slice instance;

Establish a new transport network sub-slice instance;

The example of establishing a new transport network sub-slice includes:

Selecting a suitable virtual network supporting the E2E network slice type in the existing virtual network or creating a new virtual network according to the service access point and the QoS requirement request; and creating, according to the QoS requirement, on the selected or newly created virtual network New connection service; or,

The establishing a new transport network sub-slice instance is to create a new connection service on the physical network according to the QoS requirements.
The transport network sub-slice management method according to claim 10, wherein

The example of setting the newly created transport network sub-slice instance to the transport network sub-slice corresponding to the E2E network slice includes:

When the request message received by the transport network sub-slice management function includes the ID of the E2E network slice, the transport network sub-slice management function establishes an association relationship between the transport network sub-slice instance and the E2E network slice instance, and transmits the transport sub-slice instance. ID is sent to the E2E slice management function; or

When the ID of the E2E network slice is not included in the request message received by the transport network sub-slice management function, the transport network sub-slice management function sends the detailed information of the transport network sub-slice instance to the E2E slice management function.
The method for managing a sub-segment of a transport network according to any one of claims 1 to 11, further comprising:

The transport network sub-slice management function receives a notification message notifying the E2E network slice instance demand change or a request message for updating the transport network sub-slice; wherein the message includes a new requirement of the E2E network slice;

According to the received message, corresponding processing is performed on the corresponding transport network sub-slice instance.
The transport network sub-slice management method according to claim 12, wherein

Performing corresponding processing on the corresponding transport network sub-slice instance includes:

Updating the transport network sub-slice instance corresponding to the E2E network slice instance according to the new requirement of the E2E network slice instance;

The example of the transport network sub-slice corresponding to the E2E network slice instance is updated according to the new requirement of the E2E network slice instance, including:

Establishing an association relationship between the transport network sub-slice instance and the E2E network slice instance according to the E2E network slice instance ID in the new requirement;

According to the QoS requirements of the E2E network slice instance in the new requirement, the resources of the transport network sub-slice instance are correspondingly increased or decreased; or

Selecting another transport network sub-slice or creating a new transport network sub-slice and setting to support the E2E network slice instance; and setting a association relationship between the newly selected or created transport network sub-slice instance and the E2E network slice instance, and Deleting the association relationship between the original transport network sub-slice instance and the E2E network slice instance; and releasing the original transport network of the delete association relationship when the original transport network sub-slice instance that deletes the association does not support other E2E network slices The resource occupied by the slice instance.
The method for managing a sub-segment of a transport network according to any one of claims 1 to 11, further comprising:

The transport network sub-slice management function receives a notification message notifying that the E2E network slice instance has been or is about to be deleted or a request message for deleting the transport network sub-slice;

And performing, according to the received message, a corresponding deletion process on the transport network sub-slice instance corresponding to the E2E network slice instance.
The transport network sub-slice management method according to claim 14, wherein

Performing the corresponding deletion processing on the transport network sub-slice instance corresponding to the E2E network slice instance includes:

Querying the information of the transport network sub-slice instance supporting the E2E network slice instance or the transport network sub-slice instance requested to be deleted in the sub-slice information base, and confirming whether the searched transport network sub-slice instance supports multiple E2E network slice instances ;

When the transport network sub-slice instance does not support other E2E network slice instances, deleting the information of the transport network sub-slice instance and releasing the network resources occupied by the transport network sub-slice instance;

When the transport network sub-slice instance further supports other E2E network slice instances, the association relationship between the transport network sub-slice instance and the E2E network slice instance is deleted in the information of the transport network sub-slice.
A transport network sub-slice management method includes:

The end-to-end E2E slice management function enables the E2E network slice instance requirement to be carried in the request message indicating the allocation of the transport network sub-slice or the new transport network sub-slice;

The E2E slice management function sends the request message indicating the assignment of the transport network sub-slice or the new transport network sub-slice to the transport network sub-slice management function.
The transport network sub-slice management method according to claim 16, wherein the E2E network slice instance requirement comprises: an E2E network slice type, an access point information of an E2E network slice, and a quality of service QoS requirement.
The transport network sub-slice management method according to claim 16, wherein after the request message for indicating the allocation of a transport network sub-slice or a new transport network sub-slice is transmitted to a transport network sub-slice management function, the method Also includes:

The E2E slice management function receives detailed information of the transport network sub-slice instance sent by the transport network sub-slice management function;

The E2E slice management function determines, according to the detailed information, an E2E network slice instance identifier ID that the transport network sub-slice needs to support;

The E2E slice management function sends a message to update the transport network sub-slice after determining the E2E network slice instance that the transport network sub-slice needs to support.
The transport network sub-slice management method according to claim 17, wherein the information of the E2E network slice instance further comprises at least one of the following contents:

E2E network slice instance ID, protection policy, and priority of E2E network slices.
The transport network sub-slice management method according to claim 19, wherein when the information of the E2E network slice instance includes an E2E network slice instance ID, the method further includes:

The E2E slice management function receives simple information of a transport network sub-slice instance sent by the transport network sub-slice management function; wherein the simple information includes: an ID of the transport network sub-slice instance and information of the service access point.
The transport network sub-slice management method according to claim 16, further comprising:

The E2E slice management function sends a notification message notifying that the E2E network slice instance has been or is about to be deleted or the request message for deleting the transport network sub-slice corresponding to the E2E network slice to the transport network if the E2E network slice instance has been deleted or is about to be deleted. Slice management function.
The transport network sub-slice management method according to claim 16, further comprising:

The E2E slice management function sends a notification message of the E2E network slice instance demand change or a request message for updating the transport network sub-slice to the transport network sub-slice management function when the demand of the E2E network slice changes, wherein the message is sent. Includes new requirements for E2E network slicing instances.
A transport network sub-slice management device is provided in the transport network sub-slice management function, and includes:

a first receiving unit, configured to receive a request message indicating that a transport network sub-slice or a new transport network sub-slice is allocated for the end-to-end E2E network slice; wherein the request message includes an E2E network slice instance requirement;

The transport network sub-slice setting unit is configured to set a corresponding transport network sub-slice instance for the E2E network slice instance according to the request message.
An end-to-end E2E slice management device includes:

a transport network sub-slice request unit, configured to carry an E2E network slice instance request in a request message indicating allocation of a transport network sub-slice or a new transport network sub-slice;

The second sending unit is configured to send the request message indicating the allocation of the transport network sub-slice or the new transport network sub-slice to the transport network sub-slice management function.
A management device comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the processor executes the computer program as claimed in claims 1 to 21 Any of the methods described in the claims.