CN109962806B - Method and device for managing transmission network sub-slices - Google Patents

Method and device for managing transmission network sub-slices Download PDF

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CN109962806B
CN109962806B CN201711435865.0A CN201711435865A CN109962806B CN 109962806 B CN109962806 B CN 109962806B CN 201711435865 A CN201711435865 A CN 201711435865A CN 109962806 B CN109962806 B CN 109962806B
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slice
network
sub
instance
transmission network
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CN109962806A (en
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陈丽萍
古渊
牛小兵
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0806—Configuration setting for initial configuration or provisioning, e.g. plug-and-play
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0895—Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/40—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5003—Managing SLA; Interaction between SLA and QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5041—Network service management, e.g. ensuring proper service fulfilment according to agreements characterised by the time relationship between creation and deployment of a service
    • H04L41/5045—Making service definitions prior to deployment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/78—Architectures of resource allocation
    • H04L47/788—Autonomous allocation of resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/821—Prioritising resource allocation or reservation requests

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a method and a device for managing transmission network sub-slices, wherein the method comprises the following steps: the transmission network sub-slice management function receives a request message indicating that transmission network sub-slices are allocated to the end-to-end E2E network slices or newly-built transmission network sub-slices; wherein the request message includes an E2E network slice instance requirement; and the transmission network sub-slice management function sets a corresponding transmission network sub-slice example for the E2E network slice example according to the request message. Through the scheme of the invention, the incidence relation between the transmission network sub-slice and the E2E network slice is established and maintained, so that a single transmission network sub-slice example can provide service for a plurality of E2E network slice examples, the waste of transmission network resources caused by the difference between the granularity of mobile network services and the granularity of transmission network services is avoided, and meanwhile, the transmission network sub-slice example can provide effective service for the E2E network slice according to the requirement of the E2E network slice example.

Description

Method and device for managing transmission network sub-slices
Technical Field
The present invention relates to the field of communication network management control, and in particular, to a method and an apparatus for managing sub-slices of a transmission network.
Background
Network slicing is a basic feature of 5G networks, and aims to allow operators to slice out multiple virtual end-to-end networks in a hardware infrastructure for supporting different traffic types. According to the description in the NGMN 5G white paper, one 5G slice should span multiple network domains, including access networks, transport networks, and specific resources in the core network, and each network slice should be logically isolated and able to meet different feature requirements of various types of services. The network slices not only can enable operators to more flexibly network and accelerate the deployment of new services, but also can prevent the communication of other slices from being influenced by the fault of one network slice because the slices are mutually isolated.
Currently, the research and formulation work of the 5G standard is actively being performed by the standard organization in each technical field, and the 3GPP defines slice types of three standards of the 5G mobile network: the eMBB, urrllc and MIoT, each slice type has different requirements for the 5G transport network in terms of performance such as bandwidth, delay, etc., and there may be multiple instances of each slice type, and the performance requirements may also differ between each instance.
The sub-slice of the transmission network is a part of the end-to-end network slice, and needs to be able to establish a specific connection according to the requirement of the E2E network slice, so as to guarantee the transmission of the service network information. From the perspective of the transport network, there is a problem that the granularity of the mobile network traffic is small compared to the granularity of the transport network traffic, and if an independent transport network slice instance is allocated to each mobile network slice instance, the transport network resource is inevitably wasted.
How to obtain the requirement of the E2E network slice on the transmission network and establish the transmission network sub-slice according to the requirement to support the E2E network slice is also the focus of the research of the related standard organization in the field of transmission networks. The achievement of these requirements requires interaction between the E2E network slice management system and the transport network management system, which has been mentioned in the research report of 3GPP SA5 on network slice management, and on this basis, it is also desirable to provide corresponding solutions for how the E2E network slice management system interacts with the transport network management system, how the transport network management system handles, and transport network related standards.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method and an apparatus for managing sub-slices of a transport network, which can provide a solution for interaction and related control between an E2E network slice management system and a management and control system of the transport network.
The invention provides a transmission network sub-slice management method, which comprises the following steps:
the transmission network sub-slice management function receives a request message indicating that transmission network sub-slices are allocated to the end-to-end E2E network slices or newly-built transmission network sub-slices; wherein the request message includes an E2E network slice instance requirement;
and the transmission network sub-slice management function sets a corresponding transmission network sub-slice example for the E2E network slice example according to the request message.
The invention also provides a transmission network sub-slice management method, which comprises the following steps:
the E2E slice management function carries the E2E network slice instance requirements in a request message indicating allocation of a transport network sub-slice or a newly created transport network sub-slice;
the E2E slice management function sends the request message indicating allocation of the transport network sub-slice or the newly created transport network sub-slice to the transport network sub-slice management function.
In order to solve the above technical problem, the present invention further provides a transmission network sub-slice management apparatus, which is provided in a transmission network sub-slice management function, and includes:
a first receiving unit, configured to receive a request message indicating that a transmission network sub-slice is allocated for an end-to-end E2E network slice or a new transmission network sub-slice is created; wherein the request message includes an E2E network slice instance requirement;
and the transmission network sub-slice setting unit is used for setting a corresponding transmission network sub-slice example for the E2E network slice example according to the request message.
The invention also provides an E2E slice management device, which comprises:
a transmission network sub-slice request unit, configured to carry an E2E network slice instance requirement in a request message indicating allocation of a transmission network sub-slice or a newly-created transmission network sub-slice;
and the second sending unit is used for sending the request message for indicating the distribution of the transmission network sub-slices or the new transmission network sub-slices to the transmission network sub-slice management function.
The invention also provides a management device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, and is characterized in that the processor implements the processing of any one of the methods when executing the computer program.
Compared with the prior art, the technical scheme provided by the invention comprises the following steps: the transmission network sub-slice management function receives a request message indicating that transmission network sub-slices are allocated to the end-to-end E2E network slices or newly-built transmission network sub-slices; wherein the request message includes an E2E network slice instance requirement; and the transmission network sub-slice management function sets a corresponding transmission network sub-slice example for the E2E network slice example according to the request message. Through the scheme of the invention, the incidence relation between the transmission network sub-slice and the E2E network slice is established and maintained, so that a single transmission network sub-slice example can provide service for a plurality of E2E network slice examples, the waste of transmission network resources caused by the difference between the granularity of mobile network services and the granularity of transmission network services is avoided, and meanwhile, the transmission network sub-slice example can provide effective service for the E2E network slice according to the requirement of the E2E network slice example.
Drawings
The accompanying drawings in the embodiments of the present invention are described below, and the drawings in the embodiments are provided for further understanding of the present invention, and together with the description serve to explain the present invention without limiting the scope of the present invention.
Fig. 1 is a schematic diagram of a transmission network sub-slice management architecture according to an embodiment of the present invention;
FIG. 2 is a flow diagram of the association of an example E2E network slice with an example existing transport network sub-slice;
fig. 3 is a flowchart of establishing an association relationship between a newly established transmission network sub-slice example and an E2E network slice example according to an embodiment of the present invention;
FIG. 4 is a flow chart of disassociating an instance of a transport network sub-slice from an instance of an E2E network slice according to an embodiment of the present invention;
FIG. 5 is a flow chart of another example of a transmission network sub-slice disassociating from an example of an E2E network slice according to an embodiment of the present invention;
fig. 6 is a flowchart of determining a transmission network sub-slice instance used by an E2E network slice instance by the E2E network slice management function according to an embodiment of the present invention.
Detailed Description
The following further description of the present invention, in order to facilitate understanding of those skilled in the art, is provided in conjunction with the accompanying drawings and is not intended to limit the scope of the present invention. In the present application, the embodiments and various aspects of the embodiments may be combined with each other without conflict.
The invention provides a transmission network sub-slice management method, which comprises the following steps:
step 110, the transmission network sub-slice management function receives a request message indicating that a transmission network sub-slice is allocated to the end-to-end E2E network slice or a new transmission network sub-slice is established; wherein the request message includes an E2E network slice instance requirement;
and step 120, setting a corresponding transmission network sub-slice example for the E2E network slice example according to the request message.
The transmission network sub-slice management function stores the corresponding relation between the E2E network slice instance and the transmission network sub-slice instance in the process of setting the transmission network sub-slice instance for the E2E network slice instance; wherein one transport network subslice instance corresponds to one or more E2E network slicer instances.
Wherein the E2E network slice instance requirements include a type of E2E network slice, access point information for E2E network slice, and QoS requirements. The QoS requirement includes at least one item of information such as bandwidth, delay, jitter, etc.
Wherein the E2E network slice instance requirements further include at least one of:
E2E network slice instance ID, protection policy, priority of E2E network slice.
In the embodiment of the present invention, the correspondence between the E2E network slice instance and the transmission network subslice instance may be maintained and managed by a subslice information base.
In the embodiment of the present invention, the method further includes:
establishing a sub-slice information base, wherein the sub-slice information base is used for storing relevant information of a sub-slice example of a transmission network; and when the related information of the transmission network sub-slice example changes, updating the related information of the transmission network sub-slice example in the information base.
In the embodiment of the present invention, the information related to the transmission of the mesh sub-slice instance includes:
(1) a transmission network sub-slice instance ID, which is a unique identifier in the transmission network sub-slice management function range;
(2) transmitting information of the connection service contained in the network subslice;
wherein the included information of the connection service includes at least one of
I) A connection service ID list;
II) service access point information of each connection service;
III) network type of each connection service, such as L2VPN, L3 VPN;
IV) connection and QoS parameters thereof, including ID, bandwidth, time delay and the like of each connection;
VI) a protection strategy;
(3) transmitting information of an E2E network slice instance supported by the network subslice instance;
with this information, the correspondence between the E2E network slice instance and the transport network subslice instance is recorded. One transport network subslice instance may correspond to (support) one or more E2E network slice instances. The information is used for recording information of one or more E2E network slice instances supported by the transmission network sub-slice instance;
wherein the information of the supported E2E network slice instance comprises:
a list of E2E network slice instance IDs, each E2E network slice type, and access point information for each E2E network slice;
wherein the E2E network slice instance ID list represents the IDs of all E2E network slice instances currently supported by the transmitting network subslice instance; one transport network subslice instance may serve one or more E2E network slice instances. Each E2E network slice type represents the type of E2E network slice supported by the transport network sub-slice instance, such as eMBB, urrllc, MIoT. The access point information of each E2E network slice includes information such as the IP address of the accessed network element, the type of the accessed network element, and the like.
The information related to the transmission network sub-slice instance further comprises at least one of the following:
(1) transmitting service access point information of the network sub-slice;
the service access point information includes a service access point ID, a bandwidth.
(2) Supported E2E network slice types;
(3) information of the virtual network used.
Wherein, the information of the virtual network comprises at least one of the following contents:
I) a virtual network ID list;
II) slice types supported by each virtual network;
when multiple virtual networks are required for a transport network subslice instance, these virtual networks must be able to support the E2E network slice type described above.
(1) The network sub-slice service level is transmitted.
In this embodiment of the present invention, the setting, according to the request message, a corresponding transmission network sub-slice instance for the E2E network slice instance in step 120 includes:
step 121, when the request message is a request message indicating allocation of a transmission network sub-slice, the transmission network sub-slice management function selects a sub-slice in a transmission sub-slice information base according to the requirement of an E2E network slice instance;
step 122, under the condition that a proper sub-slice can be selected, setting the selected proper transmission network sub-slice instance as a transmission network sub-slice instance corresponding to the E2E network slice;
the selected appropriate transport network subslice instance may have been used to support other E2E network slice instances, with the selection process making one transport network subslice instance available to support one or more E2E network slice instances.
And step 123, in the case that a suitable sub-slice cannot be selected, or in the case that the request message is a request message of a newly-built transmission network sub-slice, creating a new transmission network sub-slice instance according to the E2E network slice instance requirement.
In this embodiment of the present invention, the selecting, in step 121, an appropriate transmission network subslice instance from the transmission subslice information base according to the requirement of the E2E network sliced instance includes at least one of:
selecting a transport network subslice instance supporting the E2E network slice type in a transport network subslice information base according to an E2E network slice type in an E2E network slice instance requirement;
comparing all service access points in the E2E network slice instance requirement with the service access point list in the transmission network sub-slice information, ensuring that the selected service and access point list for transmitting the sub-slice information of the network sub-slice instance contains all service access points in the E2E network slice instance requirement;
comparing the QoS requirement of the E2E network slice example with the QoS parameter of the transmission network subslice example, and determining that the QoS parameter of the transmission network subslice example can meet the QoS requirement of the E2E network slice example;
it is determined that the protection policy required for the E2E network slice is consistent with the protection policy of the connection service in the transport network subslice instance.
In this embodiment of the present invention, the setting of selecting an appropriate transmission network sub-slice instance as the transmission network sub-slice instance corresponding to the E2E network slice includes:
the transport network sub-slice management function adds a new E2E network slice instance among the E2E network slice instances supported by the transport network sub-slice instance;
the transport network subslice management function sends the selected transport network subslice instance ID and related information to the E2E slice management function.
In this embodiment of the present invention, the creating a new transmission network subslice instance according to the E2E network slicer instance requirement includes:
the transmission network sub-slice management function allocates a unique identifier in the function management range for the transmission network sub-slice example;
establishing a new transmission network sub-slice example;
wherein the establishing of the new transmission network sub-slice instance comprises selecting a virtual network supporting the E2E network slice type in the existing virtual network or requesting to create a new virtual network according to the service access point and the QoS information; on the selected virtual network, a new connection service is created according to the QoS requirements. Or the establishing of the new transmission network sub-slice example is to establish a new connection service on the physical network according to the QoS requirement.
In this embodiment of the present invention, after creating a new transmission network subslice instance according to the E2E network slicer instance requirement, the method further includes:
when the request message received by the transportation network sub-slice management function contains the ID of the E2E network slice, the transportation network sub-slice management function establishes the association relationship between the transportation network sub-slice instance and the E2E network slice instance, and sends the ID of the transportation network sub-slice instance to the E2E slice management function.
When the request message received by the transport network subslice management function does not contain the ID of the E2E network slice, the transport network subslice management function sends detailed information of the transport network subslice instance to the E2E slice management function.
In the embodiment of the present invention, the method further includes:
the transmission network sub-slice management function receives a notification message for notifying the E2E of the change of the network slice instance requirement or a request message for updating the transmission network sub-slice; wherein the message includes new requirements for the E2E network slice;
and executing corresponding processing on the corresponding transmission network sub-slice example according to the received message.
Wherein the performing respective processing on respective transmission net sub-slice instances comprises:
updating the transmission network sub-slice instance corresponding to the E2E network slice instance according to the new requirement of the E2E network slice instance;
wherein the updating the transmission network sub-slice instance corresponding to the E2E network slice instance according to the new requirement of the E2E network slice instance comprises:
establishing an incidence relation between a transmission network sub-slice instance and an E2E network slice instance according to the ID of the E2E network slice instance in the new requirement;
or according to the QoS requirement of the E2E network slice instance in the new requirement, correspondingly increasing or decreasing the resources for transmitting the network sub-slice instance;
or selecting other transport network sub-slices or creating new transport network sub-slices and setting up to support the E2E network slice instance; setting the incidence relation between the newly selected or created transmission network sub-slice instance and the E2E network slice instance, and deleting the incidence relation between the original transmission network sub-slice instance and the E2E network slice instance; and when the original transmission network sub-slice example of the deleted incidence relation does not support other E2E network slices, releasing the resources occupied by the transmission network sub-slice example.
In the embodiment of the present invention, the method further includes:
the transmission network sub-slice management function receives a notification message which is sent by the E2E slice management function and notifies E2E that the network slice instance is deleted or is about to be deleted; or, receiving a request message for deleting the sub-slice of the transmission network sent by the E2E slice management function;
and according to the received message, executing corresponding deletion processing on the transmission network subslice instance corresponding to the E2E network slicer instance.
In this embodiment of the present invention, the executing the corresponding deletion process on the transmission network subslice instance corresponding to the E2E network slicer instance includes:
querying a sub-slice information base for information of a transport network sub-slice instance supporting the E2E network slice instance or a transport network sub-slice instance requesting deletion, and confirming whether the transport network sub-slice instance supports a plurality of E2E network slice instances;
when the transmission network sub-slice example does not support other E2E network slice examples, deleting the information of the transmission network sub-slice example and releasing the network resources occupied by the transmission network sub-slice example;
when the transmission network subslice instance also supports other E2E network slice instances, the association relationship between the transmission network subslice instance and the E2E network slice instance is deleted in the information of the transmission network subslice.
Based on the same or similar concept as the foregoing embodiment, an embodiment of the present invention further provides a method for managing a transmission network sub-slice, where the method includes:
step 210, the E2E slice management function carries the information of the E2E network slice instance in the request message requesting to distribute the transmission network sub-slice; wherein the information of the E2E network slice instance comprises: type of E2E network slice, access point information for E2E network slice, and QoS requirements;
step 220, the E2E slice management function sends the request message requesting allocation of a transport network sub-slice to the transport network sub-slice management function.
Wherein the information of the E2E network slice instance further includes:
E2E network slice instance ID.
Wherein, after sending the request message for requesting allocation of the transmission network sub-slice to the transmission network sub-slice management function in step 220, the method further comprises:
step 230, the E2E slice management function receives the detailed information of the transmission network sub-slice instance sent by the transmission network sub-slice management function;
step 240, the E2E slice management function determines the E2E network slice instance ID that the transport network sub-slice needs to support according to the detailed information.
In the embodiment of the present invention, the E2E slice management function sends a notification message notifying that the E2E network slice instance has been deleted or is about to be deleted to the transport network sub-slice management function in the case that the E2E network slice instance has been deleted or is about to be deleted.
In the embodiment of the present invention, the E2E network slice management function performs the following processing:
1) the E2E network slice management function sends a request indicating allocation or establishment of a transport network sub-slice, where the request carries information of an E2E network slice instance, including at least a type of the E2E network slice, access point information of the E2E network slice, QoS requirements (bandwidth, latency, jitter, etc.), and optional information includes an E2E network slice instance ID.
2) The E2E network slice management function receives the information of the allocated or established transmission network sub-slices, and the specific information includes two types:
a. only simple information of the transmission network sub-slice instance is included, specifically, ID of the transmission network sub-slice instance, service access point information of the transmission network sub-slice.
b. Including detailed information of the transmission network sub-slice instance, specifically, ID of the transmission network sub-slice instance, service access point information of the transmission network sub-slice, type of E2E network slice that can be supported, information of the virtual network used, and information of the included connection service.
3) If the E2E network slice management function receives the details 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, such as associating a newly created E2E network slice instance with the transport network sub-slice instance after a newly created E2E network slice instance. The E2E network slice management function then sends a request to update the transport network subslice instance, carrying the E2E network slice instance IDs supported by the transport network subslice instance.
Wherein the E2E network slice management function globally identifies the transport network sub-slice instance by a transport network sub-slice management function ID and a transport network sub-slice instance ID, the E2E network slice management function establishes an association of the E2E network slice instance with the transport network sub-slice instance and other sub-slices, and an E2E network slice may be served by one or more transport network sub-slices.
The following description is made in conjunction with a specific implementation scenario,
first, a transmission network sub-slice management architecture provided by the embodiment of the present invention is introduced.
As shown in fig. 1, a transport network sub-slice management architecture is configured, different Client contexts (user contexts) are configured on an SDN controller, and the SDN controller may virtually abstract transport network resources into different virtual networks according to the different Client contexts through a virtualization process to be used by users corresponding to the Client contexts, for example, the Client contexts 1, the Client contexts 2, and the Client contexts 3 may be respectively used to virtually abstract virtual networks VN1, VN2, and VN3, and the different virtual networks may be used to carry different types of mobile network E2E slices. The transmission network sub-slice management function establishes a transmission network sub-slice information base for storing the information of all transmission network sub-slices in the management field of the management function. The transport network needs to establish different traffic connections on the corresponding virtual networks according to the type of the E2E network slice to provide connection services to different instances of the type E2E network slice. And an existing SDN controller API interface is adopted between the transfer network sub-slice management function and the SDN controller. The following embodiments are all described based on the architecture shown in fig. 1.
The first embodiment is as follows:
as shown in fig. 2, the flow of using the existing transport network subslice instance and establishing an association relationship with the E2E network slicer 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 distribution of the transport network sub-slices, and carries the ID of the E2E network slice, the service type of the E2E network slice required to be supported, the access point information of the E2E network slice required, and the QoS requirement of the required connection.
(2) The transmission network subslice management function selects a transmission network subslice instance meeting the requirement in a transmission slicer information base according to the requirement of the E2E network slicer instance, and the slicer selection process comprises the following steps:
a. selecting a transport network subslice instance supporting the E2E network slice type in a transport network subslice information base according to the E2E network slice type
b. Comparing the service access points in the E2E network slice instance requirement with the service access point list in the transmission network sub-slice information, it is ensured that the service and access point list of the selected transmission network sub-slice instance includes all the service access points in the E2E network slice instance requirement
c. Comparing the QoS requirements of the transport network E2E network slice instance and the QoS parameters of the transport network subslice instance, including whether bandwidth is sufficient, whether latency is sufficient, etc., determines that the QoS parameters of the selected transport network subslice instance satisfy the requirements.
d. The protection policy required to determine the E2E network slice is consistent with the protection policy of the connection service in the transport network sub-slice instance.
(1) And the transmission network sub-slice management function sends a request for updating the connection service to an SDN controller belonging to a virtual network used by the transmission network sub-slice example, and the request carries information of a service access point to be added, required connection characteristics and the like.
(2) And the SDN controller corresponding to the virtual network indicates the network edge node corresponding to the virtual network to update connection, and the method comprises the steps of configuring the related information of the newly added service access point to the corresponding network edge node, binding the related information with the connection and the like. The process is further realized by a multi-layer controller when the process is under a multi-layer and multi-domain network structure of a transmission network.
(3) The transmission network sub-slice management function adds information such as an ID of a new E2E network slice instance to the E2E network slice instance corresponding to the transmission network sub-slice instance.
(4) The transport network subslice management function sends the transport network subslice instance ID to the E2E network slicer management system.
Example two:
as shown in fig. 3, the flow of adding the transmission network sub-slice instance and establishing the 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 distribution of transport network slices, and carries the ID of the E2E network slice, the type of service to be supported, the information of the access point requiring the E2E network, and the QoS requirement of the required connection.
(2) The transmission network subslice management function selects no transmission network subslice instance in the transmission slicer information base to meet the requirement according to the requirement of the E2E network slicer instance, wherein the selection process is the same as the embodiment I.
(3) Transport network subslice management function the transport network subslice management function allocates a unique ID to a transport network subslice instance, selects a corresponding virtual network according to the service type of the supported E2E network slice, and sends a request for creating a connection service to an SDN controller to which the virtual network belongs, the request carrying information such as a service access point and connection characteristics required to be connected.
(4) And the SDN controller corresponding to the virtual network establishes new connection on network resources corresponding to the virtual network and feeds back the connection ID and the connection related information to the transmission network sub-slice management function. The process is further realized by a multilayer controller under the multilayer and multi-domain network structure of the transmission network.
(5) The transmission network sub-slice management function creates information of the transmission network sub-slice instance in the transmission network sub-slice information base, including the incidence relation between the transmission network sub-slice instance and the E2E network slice instance, and the specific information includes: transport network subslice instance ID, E2E network slice instance ID, ID of VN used and ID of connection service included, etc.
(6) The transport network subslice management function sends the transport network subslice instance ID to the E2E network slicer management system.
Example three:
as shown in fig. 4, when a transport network subslice instance is shared by multiple E2E network slicer instances, the flow of disassociating the transport network subslice instance from the E2E network slicer instance is as follows:
(1) the E2E network slice management function sends a message to the delivery network subslice management function indicating that the E2E network slice instance has been or is about to be deleted.
(2) The transport network subslice management function queries the transport network information base for a transport network subslice instance that supports the E2E network slice instance and determines that the transport network subslice instance supports other E2E network slice instances at the same time.
(3) The transport network subslice management function sends a request for updating a connection service to a corresponding SDN controller, so as to delete the service access point information corresponding to the E2E network slice instance.
(4) And deleting the service access point corresponding to the E2E network slice instance by the SDN controller, and releasing the binding relation between the service access point and the connection. The process is further realized by a multilayer controller under the multilayer and multi-domain network structure of the transmission network.
(5) The transport network subslice management function deletes information of the E2E network slice instance from the E2E network slice instance supported by the transport network subslice instance in the transport network subslice information base.
Example four:
as shown in fig. 5, when the transmission network subslice instance is not shared, the procedure of disassociating the transmission network subslice instance with the E2E network slicer instance is as follows:
(1) the E2E network slice management function sends a message to the delivery network subslice management function indicating that the E2E network slice instance has been or is about to be deleted.
(2) The transport network subslice management function queries the transport network information base for a transport network subslice instance that supports the E2E network slicer instance and determines that the transport network subslice instance is currently serving only the E2E network slicer instance.
(3) The transport network subslice management function sends a request to delete a connection to the corresponding SDN controller.
(4) And the SDN controller releases network resources occupied by all the connections of the transmission network sub-slice example according to the received information.
(5) The transmission network sub-slice management function deletes information of the transmission network sub-slice instance in the transmission network sub-slice information base.
Example five:
the operator can plan the required transmission network sub-slice instance in advance according to the requirement of the 5G mobile network E2E network slice. Based on this scenario, as shown in fig. 6, the flow of E2E network slice instance and transport network slice instance establishing association relationship 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 that needs to be supported, the QoS requirements (including bandwidth, latency jitter, etc.) of the serving access point and the required connection.
(2) The transportation network subslice management function allocates a unique identifier in the function management range to the transportation network subslice instance, and sends a request to the SDN controller to create a new transportation network subslice instance according to the received requirement, specifically including,
I) a new virtual network is created based on the serving access point and the QoS information request.
II) creating a new connection service according to the QoS requirement on the created virtual network.
(3) The transmission network sub-slice management function transmits detailed information such as a transmission 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 transport network slice instance, and then sends a message to the transport network sub-slice management function to update the information of the specified transport network sub-slice instance, carrying the E2E network slice instance ID that needs the transport network sub-slice support.
(5) The transmission network sub-slice management system adds E2E network slice information associated with the transmission network sub-slice in the transmission network sub-slice information base.
For E2E slices, the transport web slice is a component thereof, so the transport web slice may also be referred to as a transport web subflice. While for a transport network, the child slice of the transport network is the slice of the transport network, and in addition, the slice of the transport network may be a recursively included relationship, and for a slice that is recursively included, also a child slice of a parent slice, where the parent slice corresponds to the E2E network slice, the management method for the transport child slice is also applicable to this scenario.
Based on the same or similar concept as the above embodiments, an embodiment of the present invention further provides a transmission network sub-slice management apparatus, which is disposed in a transmission network sub-slice management function, and includes:
a first receiving unit, configured to receive a request message indicating that a transmission network sub-slice is allocated for an end-to-end E2E network slice or a new transmission network sub-slice is created; wherein the request message includes an E2E network slice instance requirement;
and the transmission network sub-slice setting unit is used for setting a corresponding transmission network sub-slice example for the E2E network slice example according to the request message.
In the embodiment of the present invention, the E2E network slice instance requirements include the type of E2E network slice, access point information of E2E network slice, and QoS requirements.
In this embodiment of the present invention, the E2E network slice instance requirement further includes at least one of the following:
the E2E network slice instance identifies the ID, protection policy, priority of the E2E network slice.
In the embodiment of the present invention, the apparatus further includes:
the sub-slice information base management unit is used for establishing a sub-slice information base which is used for storing the relevant information of the sub-slice example of the transmission network; and updating the related information of the transmission network sub-slice example in the information base when the related information of the transmission network sub-slice example changes.
In this embodiment of the present invention, the information related to the transmission network sub-slice instance includes:
a transmission network sub-slice instance ID, which is a unique identifier in the transmission network sub-slice management function range;
transmitting information of the connection service contained in the network subslice;
transmitting information of an E2E network slice instance supported by the network subslice instance;
wherein the information of the supported E2E network slice instance comprises:
a list of E2E network slice instance IDs, the type of each E2E network slice, and access point information for each E2E network slice, QoS requirements for each E2E network slice;
wherein the E2E network slice instance ID list represents the IDs of all E2E network slice instances currently supported by the transmitting network subslice instance.
In this embodiment of the present invention, the E2E network slice instance requirement further includes at least one of the following:
service access point information of the transport network sub-slice, E2E network slice types that can be supported, information of the virtual network used.
In the embodiment of the invention, the transmission network sub-slice setting unit comprises a transmission network sub-slice selecting module, a transmission network sub-slice creating module and a transmission network sub-slice setting module;
the transmission network sub-slice selection module is used for selecting a sub-slice in a transmission sub-slice information base by a transmission network sub-slice management function according to the requirement of an E2E network slice example when the request message is a request message indicating the allocation of a transmission network sub-slice;
the transmission network sub-slice setting module is used for setting the selected proper transmission network sub-slice instance as the transmission network sub-slice instance corresponding to the E2E network slice under the condition that the proper sub-slice can be selected;
the transmission network sub-slice creating module is used for creating a new transmission network sub-slice example according to the E2E network slice example requirement under the condition that a proper sub-slice cannot be selected;
the transmission network sub-slice setting module is used for setting a transmission network sub-slice example newly established by the transmission network sub-slice creation module as a transmission network sub-slice example corresponding to the E2E network slice;
and the transmission network sub-slice creating module is further used for creating a new transmission network sub-slice instance according to the E2E network slice instance requirement when the request message is a request message of newly-built transmission network sub-slice.
In this embodiment of the present invention, the transmission network sub-slice selecting module performs the selection of an appropriate transmission network sub-slice instance in the transmission sub-slice information base according to the E2E network slice instance requirement according to at least one of the following ways:
selecting a transport network subslice instance supporting the E2E network slice type in a transport network subslice information base according to an E2E network slice type in an E2E network slice instance requirement;
comparing all service access points in the E2E network slice instance requirement with the service access point list in the transmission network sub-slice information, ensuring that the selected service and access point list for transmitting the sub-slice information of the network sub-slice instance contains all service access points in the E2E network slice instance requirement;
comparing the QoS requirement of the E2E network slice example with the QoS parameter of the transmission network subslice example, and determining that the QoS parameter of the transmission network subslice example can meet the QoS requirement of the E2E network slice example;
it is determined that the protection policy required for the E2E network slice is consistent with the protection policy of the connection service in the transport network subslice instance.
In this embodiment of the present invention, the setting, by the transmission network sub-slice setting unit, a transmission network sub-slice instance that selects an appropriate transmission network sub-slice instance to be corresponding to the E2E network slice includes: the transmission network sub-slice management function informs a sub-slice information base management unit to add a new E2E network slice example in an E2E network slice example supported by a transmission network sub-slice example;
the transmission network sub-slice management device further includes: a first transmitting unit;
the first sending unit is used for sending the selected transmission network sub-slice instance ID and related information to an E2E slice management function.
In this embodiment of the present invention, the creating a new transmission network sub-slice instance by the transmission network sub-slice creating module according to the requirement of the E2E network slice instance includes:
the transmission network sub-slice management function allocates a unique identifier in the function management range for the transmission network sub-slice example;
establishing a new transmission network sub-slice example;
wherein the establishing of the new transmission network sub-slice example comprises: selecting a proper virtual network supporting the E2E network slice type from the existing virtual networks or creating a new virtual network according to a service access point and a QoS requirement request; creating a new connection service on the selected or newly-built virtual network according to the QoS requirement; or, the establishing of the new transmission network sub-slice instance is to create a new connection service on the physical network according to the QoS requirement.
In this embodiment of the present invention, the setting, by the transmission network sub-slice setting module, a newly established transmission network sub-slice instance as a transmission network sub-slice instance corresponding to the E2E network slice includes:
when the request message received by the transportation network sub-slice management function contains the ID of the E2E network slice, the transportation network sub-slice management function establishes the association relationship between the transportation network sub-slice instance and the E2E network slice instance, and sends the ID of the transportation network sub-slice instance to the E2E slice management function.
When the request message received by the transport network subslice management function does not contain the ID of the E2E network slice, the transport network subslice management function sends detailed information of the transport network subslice instance to the E2E slice management function.
In this embodiment of the present invention, the first receiving unit is further configured to: receiving a notification message notifying the E2E of the change of the requirement of the network slice instance or a request message for updating the transmission network sub-slice; wherein the message includes new requirements for the E2E network slice;
and the transmission network sub-slice setting unit is also used for executing corresponding processing on the corresponding transmission network sub-slice example according to the received message.
In this embodiment of the present invention, the performing, by the transmission network sub-slice setting unit, corresponding processing on the corresponding transmission network sub-slice instance includes:
updating the transmission network sub-slice instance corresponding to the E2E network slice instance according to the new requirement of the E2E network slice instance;
wherein the updating the transmission network sub-slice instance corresponding to the E2E network slice instance according to the new requirement of the E2E network slice instance comprises:
establishing an incidence relation between a transmission network sub-slice instance and an E2E network slice instance according to the ID of the E2E network slice instance in the new requirement;
or according to the QoS requirement of the E2E network slice instance in the new requirement, correspondingly increasing or decreasing the resources for transmitting the network sub-slice instance;
or selecting other transport network sub-slices or creating new transport network sub-slices and setting up to support the E2E network slice instance; setting the incidence relation between the newly selected or created transmission network sub-slice instance and the E2E network slice instance, and deleting the incidence relation between the original transmission network sub-slice instance and the E2E network slice instance; and when the original transmission network sub-slice example of the deleted incidence relation does not support other E2E network slices, releasing the resources occupied by the transmission network sub-slice example.
In the embodiment of the present invention, the apparatus further includes: a deletion processing unit for deleting the data from the data storage unit,
the first receiving unit is further configured to: receiving a notification message notifying E2E that a network slice instance has or is about to be deleted or a request message to delete a transport network sub-slice;
and the deletion processing unit is used for executing corresponding deletion processing on the transmission network sub-slice instance corresponding to the E2E network slice instance according to the received message.
In this embodiment of the present invention, the executing the corresponding deletion process on the transmission network subslice instance corresponding to the E2E network slicer instance includes:
inquiring information of a transmission network subslice instance supporting the E2E network slicer instance or a transmission network subslice instance requested to be deleted in a subslice information base, and confirming whether the searched transmission network subslice instance supports a plurality of E2E network slicer instances;
when the transmission network sub-slice example does not support other E2E network slice examples, deleting the information of the transmission network sub-slice example and releasing the network resources occupied by the transmission network sub-slice example;
when the transmission network subslice instance also supports other E2E network slice instances, the association relationship between the transmission network subslice instance and the E2E network slice instance is deleted in the information of the transmission network subslice.
Based on the same or similar concept as the above embodiments, the embodiment of the present invention further provides an E2E slice management apparatus, including:
and the transmission network sub-slice request unit is used for carrying the E2E network slice instance requirement in a request message indicating the allocation of the transmission network sub-slice or the new transmission network sub-slice.
And the second sending unit is used for sending the request message for indicating the distribution of the transmission network sub-slices or the new transmission network sub-slices to the transmission network sub-slice management function.
In this embodiment of the present invention, the requirements of the E2E network slice instance include: type of E2E network slice, access point information for E2E network slice, and QoS requirements.
In the embodiment of the present invention, the apparatus further includes: a second receiving unit and a setting unit;
the second receiving unit is used for receiving the detailed information of the transmission network sub-slice example sent by the transmission network sub-slice management function after the request message for indicating the allocation of the transmission network sub-slice or the new transmission network sub-slice is sent to the transmission network sub-slice management function;
the setting unit is used for determining the E2E network slice instance ID which needs to be supported by the transmission network sub-slice according to the received detailed information; and sending 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.
In this embodiment of the present invention, the information of the E2E network slice instance further includes at least one of the following: E2E network slice instance ID, protection policy, priority of E2E network slice.
In this embodiment of the present invention, the second receiving unit is further configured to receive, when the information of the E2E network slice instance includes an E2E network slice instance ID, simple information of a transmission network sub-slice instance sent by a transmission network sub-slice management function; wherein the simple information includes an ID of the transmitting network sub-slice instance, and information of the serving access point.
In this embodiment of the present invention, the transmission network sub-slice request unit is further configured to send, to the transmission network sub-slice management function, a notification message notifying that the E2E network slice instance is deleted or is about to be deleted, or a request message for deleting a transmission network sub-slice corresponding to the E2E network slice, in a case that the E2E network slice instance is deleted or is about to be deleted.
In this embodiment of the present invention, the transmission network sub-slice request unit is further configured to send a notification message of a change in a requirement of an E2E network slice instance or a request message for updating a transmission network sub-slice to a transmission network sub-slice management function when a requirement of an E2E network slice changes, where the sent message includes a new requirement of an E2E network slice instance.
Based on the same or similar concepts as those in the foregoing embodiments, the embodiments of the present invention further provide a management device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the processing of any one of the methods provided by the embodiments of the present invention.
It should be noted that the above-mentioned embodiments are only for facilitating the understanding of those skilled in the art, and are not intended to limit the scope of the present invention, and any obvious substitutions, modifications, etc. made by those skilled in the art without departing from the inventive concept of the present invention are within the scope of the present invention.

Claims (25)

1. A method for transport network subslice management, the method comprising:
the transmission network sub-slice management function receives a request message indicating that transmission network sub-slices are allocated to the end-to-end E2E network slices or newly-built transmission network sub-slices; wherein the request message includes an E2E network slice instance requirement;
and the transmission network sub-slice management function sets a corresponding transmission network sub-slice example for the E2E network slice example according to the request message.
2. The transmission network sub-slice management method according to claim 1, wherein:
the E2E network slice instance requirements include: type of E2E network slice, access point information for E2E network slice, and QoS requirements.
3. The transmission network sub-slice management method according to claim 2,
the E2E network slice instance requirements further include at least one of:
the E2E network slice instance identifies the ID, protection policy, priority of the E2E network slice.
4. The transportation network subslice management method of claim 1, further comprising:
and establishing a sub-slice information base, wherein the sub-slice information base is used for storing relevant information of the sub-slice example of the transmission network.
5. The transmission network sub-slice management method of claim 4,
the information related to the transmission network sub-slice instance comprises:
a transmission network sub-slice instance ID, which is a unique identifier in the transmission network sub-slice management function range;
transmitting information of the connection service contained in the network subslice;
transmitting information of an E2E network slice instance supported by the network subslice instance;
wherein the information of the supported E2E network slice instance comprises:
a list of E2E network slice instance IDs, the type of each E2E network slice, and access point information for each E2E network slice, QoS requirements for each E2E network slice;
wherein the E2E network slice instance ID list represents the IDs of all E2E network slice instances currently supported by the transmitting network subslice instance.
6. The transmission network sub-slice management method of claim 5,
the E2E network slice instance requirements further include at least one of:
service access point information of the transport network sub-slice, E2E network slice types that can be supported, information of the virtual network used.
7. The transportation network subslice management method of claim 1, wherein the setting of the corresponding transportation network subslice instance for the E2E network slice instance according to the request message comprises:
when the request message is a request message indicating allocation of a transmission network sub-slice,
the transmission network sub-slice management function selects sub-slices in a transmission sub-slice information base according to the requirement of an E2E network slice example;
in the case that an appropriate sub-slice can be selected, setting the selected appropriate transmission network sub-slice instance as the transmission network sub-slice instance corresponding to the E2E network slice;
under the condition that a proper sub-slice cannot be selected, creating a new transmission network sub-slice example according to the requirement of the E2E network slice example, and setting the newly-created transmission network sub-slice example as a transmission network sub-slice example corresponding to the E2E network slice;
when the request message is a request message of a newly established transmission network sub-slice,
and the transmission network sub-slice management function creates a new transmission network sub-slice example according to the requirement of the E2E network slice example, and sets the newly created transmission network sub-slice example as the transmission network sub-slice example corresponding to the E2E network slice.
8. The transmission network sub-slice management method of claim 7,
selecting an appropriate transmission network sub-slice instance in the transmission sub-slice information base according to the E2E network slice instance requirement is performed according to at least one of the following modes:
selecting a transport network subslice instance supporting the E2E network slice type in a transport network subslice information base according to an E2E network slice type in an E2E network slice instance requirement;
comparing all service access points in the E2E network slice instance requirement with the service access point list in the transmission network sub-slice information, ensuring that the selected service and access point list for transmitting the sub-slice information of the network sub-slice instance contains all service access points in the E2E network slice instance requirement;
comparing the QoS requirement of the E2E network slice example with the QoS parameter of the transmission network subslice example, and determining that the QoS parameter of the transmission network subslice example can meet the QoS requirement of the E2E network slice example;
it is determined that the protection policy required for the E2E network slice is consistent with the protection policy of the connection service in the transport network subslice instance.
9. The transmission network sub-slice management method of claim 8,
the setting of selecting a suitable transmission network sub-slice instance as the transmission network sub-slice instance corresponding to the E2E network slice includes:
the transport network sub-slice management function adds a new E2E network slice instance among the E2E network slice instances supported by the transport network sub-slice instance;
the transport network subslice management function sends the selected transport network subslice instance ID and related information to the E2E slice management function.
10. The transmission network sub-slice management method of claim 7,
the creating a new transmission network sub-slice instance according to the E2E network slice instance requirement includes:
the transmission network sub-slice management function allocates a unique identifier in the function management range for the transmission network sub-slice example;
establishing a new transmission network sub-slice example;
wherein the establishing of the new transmission network sub-slice example comprises:
selecting a proper virtual network supporting the E2E network slice type from the existing virtual networks or creating a new virtual network according to a service access point and a QoS requirement request; creating a new connection service on the selected or newly-built virtual network according to the QoS requirement; or, the establishing of the new transmission network sub-slice instance is to create a new connection service on the physical network according to the QoS requirement.
11. The transmission network sub-slice management method of claim 10,
the setting of the newly-built transmission network sub-slice instance as the transmission network sub-slice instance corresponding to the E2E network slice includes:
when the request message received by the transmission network sub-slice management function contains the ID of the E2E network slice, the transmission network sub-slice management function establishes the association relationship between the transmission network sub-slice instance and the E2E network slice instance, and sends the ID of the transmission network sub-slice instance to the E2E slice management function;
when the request message received by the transport network subslice management function does not contain the ID of the E2E network slice, the transport network subslice management function sends detailed information of the transport network subslice instance to the E2E slice management function.
12. The method for managing the transmission network subfragments according to any one of claims 1 to 11, further comprising:
the transmission network sub-slice management function receives a notification message for notifying the E2E of the change of the network slice instance requirement or a request message for updating the transmission network sub-slice; wherein, the notification message for notifying the E2E of the change of the requirement of the network slice instance or the request message for updating the transmission network sub-slice includes the new requirement of the E2E network slice;
and according to the received notification message for notifying the E2E network slice instance of the requirement change or the request message for updating the transmission network sub-slice, executing corresponding processing on the corresponding transmission network sub-slice instance.
13. The transmission network sub-slice management method of claim 12,
the performing respective processing on respective transmission network sub-slice instances comprises:
updating the transmission network sub-slice instance corresponding to the E2E network slice instance according to the new requirement of the E2E network slice instance;
wherein the updating the transmission network sub-slice instance corresponding to the E2E network slice instance according to the new requirement of the E2E network slice instance comprises:
establishing an incidence relation between a transmission network sub-slice instance and an E2E network slice instance according to the ID of the E2E network slice instance in the new requirement;
or according to the QoS requirement of the E2E network slice instance in the new requirement, correspondingly increasing or decreasing the resources for transmitting the network sub-slice instance;
or selecting other transport network sub-slices or creating new transport network sub-slices and setting up to support the E2E network slice instance; setting the incidence relation between the newly selected or created transmission network sub-slice instance and the E2E network slice instance, and deleting the incidence relation between the original transmission network sub-slice instance and the E2E network slice instance; and when the original transmission network sub-slice example of the deleted incidence relation does not support other E2E network slices, releasing the resources occupied by the transmission network sub-slice example.
14. The method for managing the transmission network subfragments according to any one of claims 1 to 11, further comprising:
the transmission network sub-slice management function receives a notification message notifying E2E that a network slice instance has been or is about to be deleted or a request message to delete a transmission network sub-slice;
and according to the received notification message for notifying the E2E that the network slice instance is deleted or is about to be deleted or the request message for deleting the transmission network sub-slice, executing corresponding deletion processing on the transmission network sub-slice instance corresponding to the E2E network slice instance.
15. The transmission network sub-slice management method of claim 14,
the corresponding deletion processing of the transmission network subslice instance corresponding to the E2E network slicer instance comprises the following steps:
inquiring information of a transmission network subslice instance supporting the E2E network slicer instance or a transmission network subslice instance requested to be deleted in a subslice information base, and confirming whether the searched transmission network subslice instance supports a plurality of E2E network slicer instances;
when the transmission network sub-slice example does not support other E2E network slice examples, deleting the information of the transmission network sub-slice example and releasing the network resources occupied by the transmission network sub-slice example;
when the transmission network subslice instance also supports other E2E network slice instances, the association relationship between the transmission network subslice instance and the E2E network slice instance is deleted in the information of the transmission network subslice.
16. A method for transport network subslice management, the method comprising:
the E2E slice management function carries the E2E network slice instance requirements in a request message indicating allocation of a transport network sub-slice or a newly created transport network sub-slice;
the E2E slice management function sends the request message indicating allocation of the transport network sub-slice or the newly created transport network sub-slice to the transport network sub-slice management function.
17. The transportation network subslice management method of claim 16, wherein the E2E network slicer instance requirements include: type of E2E network slice, access point information for E2E network slice, and QoS requirements.
18. The transportation network subslice management method of claim 16, wherein after sending the request message indicating allocation of a transportation network subslice or a newly created transportation network subslice to a transportation network subslice management function, the method further comprises:
the E2E slice management function receives detailed information of the transmission network sub-slice instance sent by the transmission network sub-slice management function;
the E2E slice management function determines the E2E network slice instance identification ID which needs to be supported by the transmission network sub-slice according to the detailed information;
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.
19. The transportation network subslice management method of claim 17, wherein the information of the E2E network slicer instance further comprises at least one of:
E2E network slice instance ID, protection policy, priority of E2E network slice.
20. The transportation network subslice management method of claim 19, wherein when the information of the E2E network slicer instance includes an E2E network slicer instance ID, the method further comprises:
E2E slice management function receives simple information of transmission network sub-slice instance sent by transmission network sub-slice management function; wherein the simple information includes an ID of the transmitting network sub-slice instance, and information of the serving access point.
21. The transportation network subslice management method of claim 16, further comprising:
the E2E slice management function sends a notification message notifying the E2E that the network slice instance has been or is about to be deleted or a request message to delete the transport network sub-slice corresponding to the E2E network slice to the transport network sub-slice management function in the case that the E2E network slice instance has been or is about to be deleted.
22. The transportation network subslice management method of claim 16, further comprising:
and when the requirement of the E2E network slice changes, the E2E slice management function sends a notification message of the requirement change of the E2E network slice example or a request message for updating the transmission network sub-slice to the transmission network sub-slice management function, wherein the sent notification message of the requirement change of the E2E network slice example or the request message for updating the transmission network sub-slice contains the new requirement of the E2E network slice example.
23. A transmission network sub-slice management apparatus provided in a transmission network sub-slice management function, characterized by comprising:
a first receiving unit, configured to receive a request message indicating that a transmission network sub-slice is allocated for an end-to-end E2E network slice or a new transmission network sub-slice is created; wherein the request message includes an E2E network slice instance requirement;
and the transmission network sub-slice setting unit is used for setting a corresponding transmission network sub-slice example for the E2E network slice example according to the request message.
24. An E2E slice management apparatus, the apparatus comprising:
a transmission network sub-slice request unit, configured to carry an E2E network slice instance requirement in a request message indicating allocation of a transmission network sub-slice or a newly-created transmission network sub-slice;
and the second sending unit is used for sending the request message for indicating the distribution of the transmission network sub-slices or the new transmission network sub-slices to the transmission network sub-slice management function.
25. A management device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the process of the method of any one of claims 1 to 21 when executing the computer program.
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