CN107820291B

CN107820291B - Network slice control method and related equipment

Info

Publication number: CN107820291B
Application number: CN201610819763.8A
Authority: CN
Inventors: 李宏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-09-12
Filing date: 2016-09-12
Publication date: 2021-04-20
Anticipated expiration: 2036-09-12
Also published as: CN107820291A; WO2018045877A1

Abstract

The invention discloses a network slice control method and related equipment, wherein the method comprises the following steps: the terminal device accesses the source network slice. And the source network slice sends the information of the network state to the core network management equipment. And the core network management equipment receives the information of the network state sent by the source network slice. And if the network state meets the first preset condition, the core network management equipment controls the terminal equipment to be switched from the source network slice to the target network slice. Therefore, the load pressure of the source network slice is reduced, and the network resources of the source network slice are optimized.

Description

Network slice control method and related equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a network slice control method and a related device.

Background

The development of wireless communication technology is changing day by day, and the wireless communication service will be varied in the future. The fifth Generation (5G for short) wireless Communication network is oriented to different application scenarios, such as ultra high definition video, virtual reality, large-scale internet of things, internet of vehicles, and the like, where the different scenarios have different requirements on network mobility, security, delay, reliability, and even charging manner, for example, a service with high-speed mobility characteristics has higher requirements on network performance indexes such as service continuity, handover delay, and the like, while Machine Type Communication (MTC) has higher requirements on service connection number, and has no requirements on handover delay and mobility. In a future 5G communication system, in order to meet different requirements of different services on network performance, a future network needs to have a capability formulated as required, that is, to realize flexible configuration of network slices, a physical network is cut into a plurality of virtual network slices, and each virtual network slice faces different application scene requirements.

As can be seen from the above, the future services have different forms and are very different, the development trend of the 5G network is to establish different network slices for different types of services through a virtualization technology, and how to control the terminal device to switch to a target network slice in the 5G network is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the invention provides a network slice control method and related equipment, which can control the switching of terminal equipment to a target network slice by core network management equipment, reduce the load pressure of a source network slice and optimize the network resources of the source network slice.

In a first aspect, an embodiment of the present invention provides a network slice control method. The method comprises the following steps: and the core network management equipment receives the network state information sent by the source network slice, wherein the source network slice is the network slice accessed by the terminal equipment. And if the network state of the source network slice meets a first preset condition, the core network management equipment controls the terminal equipment to be switched from the source network slice to the target network slice. Therefore, the load pressure of the source network slice is reduced, and the network resources of the source network slice are optimized.

With reference to the first aspect, in a first implementation manner of the first aspect, a description is given of a process in which a core network management device controls a terminal device to switch from a source network slice to a target network slice. And the core network management equipment performs target network slice access authorization on the terminal equipment. The core network management equipment sends a first slice control request to the terminal equipment. The first slice control request includes an identification of the target network slice. And the identifier of the target network slice is used for indicating the terminal equipment to determine to switch from the source network slice to the target network slice according to the identifier of the target network slice. Therefore, the load pressure of the source network slice is reduced, and the network resources of the source network slice are optimized.

With reference to the first implementation manner of the first aspect, in a second implementation manner of the first aspect, the first slice control request further includes configuration indication information corresponding to the target network slice, where the configuration indication information is used to indicate the terminal device to perform protocol configuration according to the configuration indication information to access the target network slice. Thus, the terminal device can be correctly accessed into the target network slice.

With reference to the first implementation manner of the first aspect or the second implementation manner of the first aspect, in a third implementation manner of the first aspect, after the core network management device performs target network slice access authorization on the terminal device, the core network management device further sends a second slice control request including an identifier of the terminal device to the target network slice. And the second slice control request is used for indicating the target network slice to establish a bearer for the terminal equipment corresponding to the identifier of the terminal equipment. And when the core network management equipment determines that the target network slice establishes the load for the terminal equipment, the core network management equipment sends a third slice control request comprising the identifier of the terminal equipment to the source network slice. And the third slice control request is used for indicating the source network slice to remove the bearer established for the terminal equipment corresponding to the identifier of the terminal equipment. And establishing a bearer for the terminal equipment through the target network slice, so that the terminal equipment can be correctly accessed into the target network slice. In order to ensure that the service of the terminal device is not interrupted, the source network slice only removes the bearer established for the terminal device after the target network slice establishes the bearer for the terminal device. And then, the source network slice does not provide service for the terminal equipment any more, so that the load pressure of the source network slice is reduced.

With reference to the first implementation manner of the first aspect, the second implementation manner of the first aspect, or the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect, the core network management device obtains an identifier of the terminal device from a terminal device identifier set that has been accessed to the source network slice, and obtains, according to the identifier of the terminal device, subscription information corresponding to the identifier of the terminal device from a home subscriber server or a policy and charging rule function device. And if the core network management equipment determines that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment according to the subscription information, the core network management equipment carries out target network slice access authorization on the terminal equipment. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the first aspect or any one implementation manner of the first aspect, in a fifth implementation manner of the first aspect, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

With reference to the first implementation manner of the first aspect or any one implementation manner of the first aspect, in a sixth implementation manner of the first aspect, the target network slice is a default network slice or a network slice that meets a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

With reference to the sixth implementation manner of the first aspect, in a seventh implementation manner of the first aspect, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

With reference to the first implementation manner of the first aspect or any implementation manner of the first aspect, in an eighth implementation manner of the first aspect, the information of the network state sent by the source network slice includes an identifier of the terminal device. The core network management equipment acquires the identifier of the terminal equipment from the information of the network state, and acquires the subscription information corresponding to the identifier of the terminal equipment from the attribution subscription user server or the strategy and charging rule function equipment according to the identifier of the terminal equipment. And if the core network management equipment determines that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment according to the subscription information, the core network management equipment carries out target network slice access authorization on the terminal equipment. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the first aspect, or the first implementation manner of the first aspect, or the second implementation manner of the first aspect, or the eighth implementation manner of the first aspect, in a ninth implementation manner of the first aspect, the information of the network state sent by the source network slice includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by the source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by the target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

With reference to the first aspect or any one implementation manner of the first aspect, in a tenth implementation manner of the first aspect, the receiving, by the core network management device, information of a network state sent by a source network slice specifically includes: and the core network management equipment receives the network state information sent by the radio access network equipment or the core network control plane equipment, wherein the radio access network equipment or the core network control plane equipment is the equipment in the source network slice.

With reference to the first aspect or any implementation manner of the first aspect, in an eleventh implementation manner of the first aspect, a terminal device initial access source network slice is described. And the core network management equipment receives the slice access request sent by the terminal equipment. The slice access request includes an identification of the source network slice. And the core network management equipment performs source network slice access authorization corresponding to the source network slice identifier on the terminal equipment according to the slice access request. And the core network management equipment sends configuration indication information corresponding to the source network slice to the terminal equipment. And the configuration indication information corresponding to the source network slice is used for indicating the terminal equipment to carry out protocol configuration according to the configuration indication information corresponding to the source network slice so as to access the source network slice. Therefore, the success rate of the terminal equipment when the terminal equipment is initially accessed to the source network slice is improved.

With reference to the eleventh implementation manner of the first aspect, in a twelfth implementation manner of the first aspect, after the core network management device performs source network slice access authorization on the terminal device, the core network management device further sends a sixth slice control request to the source network slice, where the sixth slice control request includes an identifier of the terminal device. And the sixth slice control request is used for indicating the source network slice to establish a bearer for the terminal equipment corresponding to the identifier of the terminal equipment. Therefore, the terminal equipment can be accessed into the source network slice.

With reference to the eleventh implementation manner of the first aspect or the twelfth implementation manner of the first aspect, in a thirteenth implementation manner of the first aspect, the slice access request further includes an identifier of the terminal device. The core network management equipment acquires the identifier of the terminal equipment from the slice access request, acquires the subscription information corresponding to the identifier of the terminal equipment from the attribution subscriber server or the policy and charging rule function equipment according to the identifier of the terminal equipment, and if the core network management equipment determines that the terminal equipment can be accessed to the source network slice according to the subscription information and the identifier of the source network slice, the core network management equipment performs source network slice access authorization corresponding to the identifier of the source network slice on the terminal equipment. The success rate of the terminal equipment when accessing the source network slice is further improved through the access authorization.

With reference to the first aspect, in a fourteenth implementation manner of the first aspect, the core network management device includes a slice manager and a protocol configuration function, which are connected to each other. The target network slice is a default network slice. The slice manager receives information of the network status sent by the source network slice. And if the network state of the source network slice meets a first preset condition, the slice manager performs default network slice access authorization on the terminal equipment. The slice manager sends a protocol configuration information acquisition request to the protocol configuration device, and the protocol configuration device receives the protocol configuration information acquisition request sent by the slice manager. The protocol configuration information acquisition request includes an identifier of a default network slice. The protocol configuration information acquisition request is used for indicating to acquire protocol configuration information corresponding to the default network slice. And the protocol configuration equipment searches protocol configuration information corresponding to the default network slice according to the received protocol configuration information acquisition request and sends the protocol configuration information to the slice manager. The slice manager receives protocol configuration information sent by the protocol configuration equipment and sends the protocol configuration information to the terminal equipment, and the terminal equipment receives the protocol configuration information sent by the slice manager and carries out protocol configuration according to the protocol configuration information so as to access a default network slice. Compared with the mode that the slice manager and the protocol configuration device are integrally arranged, the slice manager and the protocol configuration device in the implementation mode respectively realize different functions and have higher efficiency.

With reference to the first aspect or any implementation manner of the first aspect, in a fifteenth implementation manner of the first aspect, the information of the network state of the source network slice includes information of a network state of a radio access network device in the source network slice and/or information of a network state of a core network user plane device in the source network slice, or the information of the network state of the source network slice includes information of a network state of a core network control plane device in the source network slice and/or information of a network state of a core network user plane device in the source network slice.

In a second aspect, an embodiment of the present invention provides a network slice control method. The method comprises the following steps: and the wireless access network equipment sends the information of the network state of the source network slice to the core network management equipment. The source network slice is a network slice accessed by the terminal device, and the radio access network device is a radio access network device of the source network slice. And if the network state of the source network slice meets a first preset condition, the wireless access network equipment receives a second slice control request which is sent by the core network management equipment and comprises the identifier of the terminal equipment. And the wireless access network equipment removes the bearer established for the terminal equipment corresponding to the identifier of the terminal equipment according to the second slice control request. And then, the source network slice does not provide service for the terminal equipment any more, so that the load pressure of the source network slice is reduced.

With reference to the second aspect, in a first implementation manner of the second aspect, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

With reference to the second aspect or the first implementation manner of the second aspect, in a second implementation manner of the second aspect, the information of the network state sent by the radio access network device includes an identifier of the terminal device. The identifier of the terminal device is used for indicating the core network management device to acquire subscription information corresponding to the identifier of the terminal device from the attribution subscription user server or the policy and charging rule function device according to the identifier of the terminal device, and if the core network management device determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the core network management device performs target network slice access authorization on the terminal device. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the second aspect, or the first implementation manner of the second aspect, or the second implementation manner of the second aspect, in a third implementation manner of the second aspect, the target network slice is a default network slice or a network slice that satisfies a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

With reference to the third implementation manner of the second aspect, in a fourth implementation manner of the second aspect, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

With reference to the second aspect or the second implementation manner of the second aspect, in a fifth implementation manner of the second aspect, the information of the network state sent by the radio access network device includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by a source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by a target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

With reference to the second aspect or any implementation manner of the second aspect, in a sixth implementation manner of the second aspect, a terminal device initial access source network slice is described. And the source network slice receives a sixth slice control request sent by the core network management equipment, wherein the sixth slice control request is sent to the source network slice by the core network management equipment according to a slice access request sent by the terminal equipment. The sixth slice access request includes the identifier of the terminal device. And the source network slice establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the sixth slice control request. Therefore, the terminal equipment can be accessed into the source network slice.

With reference to the second aspect or any implementation manner of the second aspect, in a seventh implementation manner of the second aspect, the information of the network state of the source network slice includes information of a network state of a radio access network device in the source network slice and/or information of a network state of a core network user plane device in the source network slice.

In a third aspect, an embodiment of the present invention provides a network slice control method. The method comprises the following steps: and the core network user plane equipment sends the information of the network state of the source network slice to the core network management equipment. The source network slice is a network slice accessed by the terminal device, and the core network user plane device is a core network user plane device of the source network slice. And if the network state of the source network slice meets a first preset condition, the core network user plane equipment receives a second slice control request which is sent by the core network management equipment and comprises the identifier of the terminal equipment. And the core network user plane equipment removes the load established for the terminal equipment corresponding to the identifier of the terminal equipment according to the second slice control request. And then, the source network slice does not provide service for the terminal equipment any more, so that the load pressure of the source network slice is reduced.

With reference to the third aspect, in a first implementation manner of the third aspect, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

With reference to the third aspect or the first implementation manner of the third aspect, in a second implementation manner of the third aspect, the information of the network state sent by the core network user plane device includes an identifier of the terminal device. The identifier of the terminal device is used for indicating the core network management device to acquire subscription information corresponding to the identifier of the terminal device from the attribution subscription user server or the policy and charging rule function device according to the identifier of the terminal device, and if the core network management device determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the core network management device performs target network slice access authorization on the terminal device. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the third aspect, or the first implementation manner of the third aspect, or the second implementation manner of the third aspect, in a third implementation manner of the third aspect, the target network slice is a default network slice or a network slice that satisfies a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

With reference to the third implementation manner of the third aspect, in a fourth implementation manner of the third aspect, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

With reference to the third aspect or the second implementation manner of the third aspect, in a fifth implementation manner of the third aspect, the information of the network state sent by the core network user plane device includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by a source core network user plane device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by a target core network user plane device corresponding to the target network slice, and an identifier of the target core network user plane device. The identification of the target core network user plane equipment is used for the core network management equipment to determine the service type corresponding to the target core network user plane equipment. The first preset condition includes: the second measurement value is larger than the first measurement value, and the service type corresponding to the target core network user plane device is inconsistent with the service type corresponding to the source core network user plane device.

With reference to the third aspect or any implementation manner of the third aspect, in a sixth implementation manner of the third aspect, a description is given of a terminal device initial access source network slice. And the source network slice receives a sixth slice control request sent by the core network management equipment, wherein the sixth slice control request is sent to the source network slice by the core network management equipment according to a slice access request sent by the terminal equipment. The sixth slice access request includes the identifier of the terminal device. And the source network slice establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the sixth slice control request. Therefore, the terminal equipment can be accessed into the source network slice.

With reference to the third aspect or any implementation manner of the third aspect, in a seventh implementation manner of the third aspect, the information of the network state of the source network slice includes information of a network state of a radio access network device in the source network slice and/or information of a network state of a core network user plane device in the source network slice.

In a fourth aspect, an embodiment of the present invention provides a network slice control method. The method comprises the following steps: and the core network control plane equipment sends the information of the network state of the source network slice to the core network management equipment. The source network slice is a network slice to which the terminal device has access, and the core network control plane device is a core network control plane device of the source network slice. And if the network state of the source network slice meets a first preset condition, the core network control plane device receives a second slice control request which is sent by the core network management device and comprises the identifier of the terminal device. And the core network control plane equipment removes the bearer established for the terminal equipment corresponding to the identifier of the terminal equipment according to the second slice control request. And then, the source network slice does not provide service for the terminal equipment any more, so that the load pressure of the source network slice is reduced.

With reference to the fourth aspect, in a first implementation manner of the fourth aspect, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

With reference to the fourth aspect or the first implementation manner of the fourth aspect, in a second implementation manner of the fourth aspect, the information of the network state sent by the core network control plane device includes an identifier of the terminal device. The identifier of the terminal device is used for indicating the core network management device to acquire subscription information corresponding to the identifier of the terminal device from the attribution subscription user server or the policy and charging rule function device according to the identifier of the terminal device, and if the core network management device determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the core network management device performs target network slice access authorization on the terminal device. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the fourth aspect, or the first implementation manner of the fourth aspect, or the second implementation manner of the fourth aspect, in a third implementation manner of the fourth aspect, the target network slice is a default network slice or a network slice that satisfies a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

With reference to the third implementation manner of the fourth aspect, in a fourth implementation manner of the fourth aspect, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

With reference to the fourth aspect or the second implementation manner of the fourth aspect, in a fifth implementation manner of the fourth aspect, the information of the network state sent by the core network control plane device includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by a source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by a target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

With reference to the fourth aspect or any implementation manner of the fourth aspect, in a sixth implementation manner of the fourth aspect, a terminal device initial access source network slice is described. And the source network slice receives a sixth slice control request sent by the core network management equipment, wherein the sixth slice control request is sent to the source network slice by the core network management equipment according to a slice access request sent by the terminal equipment. The sixth slice access request includes the identifier of the terminal device. And the source network slice establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the sixth slice control request. Therefore, the terminal equipment can be accessed into the source network slice.

With reference to the fourth aspect or any implementation manner of the fourth aspect, in a seventh implementation manner of the fourth aspect, the information of the network state of the source network slice includes information of a network state of a core network control plane device in the source network slice and/or information of a network state of a core network user plane device in the source network slice.

In a fifth aspect, an embodiment of the present invention provides a network slice control method. The method comprises the following steps: the terminal equipment receives a first slice control request sent by the core network management equipment, and the terminal equipment has access to a source network slice. The first slice control request is sent to the terminal equipment by the core network management equipment when the network state of the source network slice is judged to meet a first preset condition according to the network state information sent by the source network slice, and the first slice control request comprises an identifier of a target network slice. And the terminal equipment determines a target network slice corresponding to the identifier for switching from the source network slice to the target network slice according to the first slice control request. Therefore, the load pressure of the source network slice is reduced, and the network resources of the source network slice are optimized.

With reference to the fifth aspect, in a first implementation manner of the fifth aspect, the first slice control request further includes configuration indication information corresponding to the target network slice; after the terminal device receives the first slice control request sent by the core network management device, the terminal device also performs protocol configuration according to the configuration indication information to access the target network slice. The success rate of the terminal equipment accessing the target network slice is improved.

With reference to the fifth aspect or the first implementation manner of the fifth aspect, in a second implementation manner of the fifth aspect, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

With reference to the fifth aspect, or the first implementation manner of the fifth aspect, or the second implementation manner of the fifth aspect, in a third implementation manner of the fifth aspect, the target network slice is a default network slice or a network slice that meets a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

With reference to the third implementation manner of the fifth aspect, in a fourth implementation manner of the fifth aspect, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

With reference to the fifth aspect or the first implementation manner of the fifth aspect, in a fifth implementation manner of the fifth aspect, the information of the network state sent by the source network slice includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by the source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by the target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

With reference to the fifth aspect or any implementation manner of the fifth aspect, in a sixth implementation manner of the fifth aspect, a terminal device initial access source network slice is described. The terminal device sends a slice access request including an identifier of the source network slice to the core network management device. The slice access request is used for indicating the core network management equipment to perform source network slice access authorization corresponding to the source network slice identification on the terminal equipment, and sending configuration indication information corresponding to the source network slice to the terminal equipment. And the terminal equipment receives configuration indication information corresponding to the source network slice sent by the core network management equipment. And the terminal equipment carries out protocol configuration according to the configuration indication information corresponding to the source network slice so as to access the source network slice. Therefore, the success rate of the terminal equipment when the terminal equipment is initially accessed to the source network slice is improved.

With reference to the sixth implementation manner of the fifth aspect, in a seventh implementation manner of the fifth aspect, the slice access request further includes an identifier of the terminal device. The identifier of the terminal device is used for indicating the core network management device to acquire subscription information corresponding to the identifier of the terminal device from the attribution subscription user server or the policy and charging rule function device according to the identifier of the terminal device, and if the core network management device determines that the terminal device can be accessed into the source network slice according to the subscription information and the identifier of the source network slice, the core network management device performs source network slice access authorization corresponding to the identifier of the source network slice on the terminal device. The success rate of the terminal equipment when accessing the source network slice is further improved through the access authorization.

With reference to the fifth aspect or any implementation manner of the fifth aspect, in an eighth implementation manner of the fifth aspect, the information of the network state of the source network slice includes information of a network state of a radio access network device in the source network slice and/or information of a network state of a core network user plane device in the source network slice, or the information of the network state of the source network slice includes information of a network state of a core network control plane device in the source network slice and/or information of a network state of a core network user plane device in the source network slice.

In a sixth aspect, an embodiment of the present invention provides a network slice control method. The method comprises the following steps: and the core network management equipment receives the network state information sent by the target network slice, wherein the target network slice is a network slice which is failed to be accessed by the terminal equipment, and the terminal equipment is accessed to the source network slice. And if the network state of the target network slice meets a third preset condition, the core network management equipment controls the terminal equipment to access the target network slice. Therefore, the requirement that the terminal equipment is simultaneously accessed into two network slices is met.

With reference to the sixth aspect, in a first implementation manner of the sixth aspect, a description is given of a process in which a core network management device controls a terminal device to access a target network slice. And the core network management equipment performs target network slice access authorization on the terminal equipment. And the core network management equipment sends a fourth slice control request to the terminal equipment, wherein the fourth slice control request comprises configuration indication information corresponding to the target network slice. The configuration indication information corresponding to the target network slice is used for indicating the terminal equipment to carry out protocol configuration according to the configuration indication information so as to access the target network slice, so that the terminal equipment can be correctly accessed into the target network slice.

With reference to the first implementation manner of the sixth aspect, in a second implementation manner of the sixth aspect, after the core network management device performs target network slice access authorization on the terminal device, the core network management device further sends a fifth slice control request including an identifier of the terminal device to the target network slice. The fifth slice control request is used for indicating the target network slice to establish a bearer for the terminal device corresponding to the identifier of the terminal device, so that the terminal device can be correctly accessed into the target network slice.

With reference to the first implementation manner of the sixth aspect or the second implementation manner of the sixth aspect, in a third implementation manner of the sixth aspect, the core network management device obtains an identifier of the terminal device from a pre-recorded terminal device identifier set, and obtains, according to the identifier of the terminal device, subscription information corresponding to the identifier of the terminal device from a home subscriber server or a policy and charging rule function device. And if the core network management equipment determines that the terminal equipment allows the core network management equipment to carry out network slice access control on the terminal equipment according to the subscription information, the core network management equipment carries out target network slice access authorization on the terminal equipment. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the sixth aspect or any one implementation manner of the sixth aspect, in a fourth implementation manner of the sixth aspect, the third preset condition includes: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value.

With reference to the sixth aspect or any implementation manner of the sixth aspect, in a fifth implementation manner of the sixth aspect, the receiving, by the core network management device, information of a network state sent by a target network slice specifically includes: and the core network management equipment receives the network state information sent by the radio access network equipment or the core network user plane equipment or the core network control plane equipment, wherein the radio access network equipment or the core network user plane equipment or the core network control plane equipment is the equipment in the target network slice.

With reference to the sixth aspect or any implementation manner of the sixth aspect, in a sixth implementation manner of the sixth aspect, a terminal device initial access source network slice is described. And the core network management equipment receives the slice access request sent by the terminal equipment. The slice access request includes an identification of the source network slice. And the core network management equipment performs source network slice access authorization corresponding to the source network slice identifier on the terminal equipment according to the slice access request. And the core network management equipment sends configuration indication information corresponding to the source network slice to the terminal equipment. And the configuration indication information corresponding to the source network slice is used for indicating the terminal equipment to carry out protocol configuration according to the configuration indication information corresponding to the source network slice so as to access the source network slice. Therefore, the success rate of the terminal equipment when the terminal equipment is initially accessed to the source network slice is improved.

With reference to the sixth implementation manner of the sixth aspect, in a seventh implementation manner of the sixth aspect, after the core network management device performs source network slice access authorization on the terminal device according to the slice access request, the core network management device further sends a sixth slice control request including an identifier of the terminal device to the source network slice. And the sixth slice control request is used for indicating the source network slice to establish the bearer for the terminal equipment. Therefore, the terminal equipment can be accessed into the source network slice.

With reference to the sixth implementation manner of the sixth aspect or the seventh implementation manner of the sixth aspect, in an eighth implementation manner of the sixth aspect, the slice access request further includes an identifier of the terminal device. The core network management equipment acquires the identifier of the terminal equipment from the slice access request, acquires the subscription information corresponding to the identifier of the terminal equipment from the attribution subscriber server or the policy and charging rule function equipment according to the identifier of the terminal equipment, and if the core network management equipment determines that the terminal equipment can be accessed to the source network slice according to the subscription information and the identifier of the source network slice, the core network management equipment performs source network slice access authorization corresponding to the identifier of the source network slice on the terminal equipment. The success rate of the terminal equipment when accessing the source network slice is further improved through the access authorization.

With reference to the sixth aspect, in a ninth implementation manner of the sixth aspect, the core network management device includes a slice manager and a protocol configuration device that are connected to each other. The slice manager receives information of the network state sent by the target network slice. And if the network state of the target network slice meets a third preset condition, the slice manager performs target network slice access authorization on the terminal equipment. The slice manager sends a protocol configuration information acquisition request to the protocol configuration device, and the protocol configuration device receives the protocol configuration information acquisition request sent by the slice manager. The protocol configuration information acquisition request includes an identifier of the target network slice. The protocol configuration information acquisition request is used for indicating to acquire the protocol configuration information corresponding to the target network slice. And the protocol configuration equipment acquires a request for searching the protocol configuration information corresponding to the target network slice according to the received protocol configuration information and sends the protocol configuration information to the slice manager. The slice manager receives protocol configuration information sent by the protocol configuration equipment and sends the protocol configuration information to the terminal equipment, and the terminal equipment receives the protocol configuration information sent by the slice manager and carries out protocol configuration according to the protocol configuration information so as to access the target network slice. Compared with the mode that the slice manager and the protocol configuration device are integrally arranged, the slice manager and the protocol configuration device in the implementation mode respectively realize different functions and have higher efficiency.

With reference to the sixth aspect or any implementation manner of the sixth aspect, in a tenth implementation manner of the sixth aspect, the information of the network state of the target network slice includes information of the network state of the radio access network device in the target network slice and/or information of the network state of the core network user plane device in the target network slice, or the information of the network state of the target network slice includes information of the network state of the core network control plane device in the target network slice and/or information of the network state of the core network user plane device in the target network slice.

In a seventh aspect, an embodiment of the present invention provides a network slice control method. The method comprises the following steps: and the wireless access network equipment sends the network state information of the target network slice to the core network management equipment, wherein the target network slice is a network slice which fails to be accessed by the terminal equipment, the terminal equipment is accessed to a source network slice, and the wireless access network equipment is the wireless access network equipment of the target network slice. And if the network state of the target network slice meets a third preset condition, the wireless access network equipment receives a fifth slice control request sent by the core network management equipment, wherein the fifth slice control request comprises the identifier of the terminal equipment. And the wireless access network equipment establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the fifth slice control request, thereby ensuring that the terminal equipment which has accessed the source network slice can be simultaneously accessed into the target network slice.

With reference to the seventh aspect, in a first implementation manner of the seventh aspect, the third preset condition includes: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value.

With reference to the seventh aspect or the first implementation manner of the seventh aspect, in a second implementation manner of the seventh aspect, the information of the network state of the target network slice includes information of a network state of a radio access network device in the target network slice and/or information of a network state of a core network user plane device in the target network slice.

In an eighth aspect, an embodiment of the present invention provides a network slice control method. The method comprises the following steps: the core network user plane equipment sends information of the network state of the target network slice to the core network management equipment, the target network slice is a network slice which fails to be accessed by the terminal equipment, the terminal equipment is accessed to the source network slice, and the core network user plane equipment is the core network user plane equipment of the target network slice. And if the network state of the target network slice meets a third preset condition, the core network user plane equipment receives a fifth slice control request sent by the core network management equipment, wherein the fifth slice control request comprises the identifier of the terminal equipment. And the core network user plane equipment establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the fifth slice control request, thereby ensuring that the terminal equipment which has accessed the source network slice can be simultaneously accessed into the target network slice.

With reference to the eighth aspect, in a first implementation manner of the eighth aspect, the third preset condition includes: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value.

With reference to the eighth aspect or the first implementation manner of the eighth aspect, in a second implementation manner of the eighth aspect, the information of the network state of the target network slice includes information of the network state of the radio access network device in the target network slice and/or information of the network state of the core network user plane device in the target network slice.

In a ninth aspect, an embodiment of the present invention provides a network slice control method. The method comprises the following steps: the core network control plane device sends information of network states of the target network slices to the core network management device, the target network slices are network slices which are failed to be accessed by the terminal device, the terminal device is accessed to the source network slices, and the core network control plane device is the core network control plane device of the target network slices. And if the network state of the target network slice meets a third preset condition, the core network control plane device receives a fifth slice control request sent by the core network management device, wherein the fifth slice control request comprises an identifier of the terminal device. And the core network control plane device establishes a bearer for the terminal device corresponding to the identifier of the terminal device according to the fifth slice control request, thereby ensuring that the terminal device which has accessed the source network slice can be simultaneously accessed into the target network slice.

With reference to the ninth aspect, in a first implementation manner of the ninth aspect, the third preset condition includes: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value.

With reference to the ninth aspect or the first implementation manner of the ninth aspect, in a second implementation manner of the ninth aspect, the information of the network state of the target network slice includes information of the network state of the core network control plane device in the target network slice and/or information of the network state of the core network user plane device in the target network slice.

In a tenth aspect, an embodiment of the present invention provides a network slice control method. The method comprises the following steps: and the terminal equipment receives a fourth slice control request sent by the core network management equipment, and the terminal equipment has access to the source network slice. The fourth slice control request includes configuration indication information corresponding to the target network slice. And the fourth slice control request is sent to the terminal equipment by the core network management equipment when the network state of the target network slice is judged to meet the third preset condition according to the network state information sent by the target network slice. And the terminal equipment performs protocol configuration according to the configuration indication information corresponding to the target network slice so as to access the target network slice. Therefore, the requirement that the terminal equipment is simultaneously accessed into two network slices is met.

With reference to the tenth aspect, in a first implementation manner of the tenth aspect, the third preset condition includes: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value.

With reference to the tenth aspect or the first implementation manner of the tenth aspect, in a second implementation manner of the tenth aspect, the information of the network state of the target network slice includes information of the network state of the radio access network device in the target network slice and/or information of the network state of the core network user plane device in the target network slice, or the information of the network state of the target network slice includes information of the network state of the core network control plane device in the target network slice and/or information of the network state of the core network user plane device in the target network slice.

In an eleventh aspect, an embodiment of the present invention provides a core network management device, including a processor, a memory, and a transceiver, where the memory is configured to store instructions, and the processor is configured to invoke the instructions stored in the memory to perform the following operations: and receiving the information of the network state sent by the source network slice through the transceiver, wherein the source network slice is the network slice accessed by the terminal equipment. And if the network state of the source network slice meets a first preset condition, the processor controls the terminal equipment to be switched from the source network slice to the target network slice. Therefore, the load pressure of the source network slice is reduced, and the network resources of the source network slice are optimized.

With reference to the eleventh aspect, in a first implementation manner of the eleventh aspect, the processor controlling the terminal device to switch from the source network slice to the target network slice includes: and the processor performs target network slice access authorization on the terminal equipment. The processor transmits a first slice control request to the terminal device through the transceiver. The first slice control request includes an identification of the target network slice. The identifier of the target network slice is used for indicating the terminal equipment to determine the target network slice corresponding to the identifier of the target network slice switched from the source network slice according to the identifier of the target network slice. Therefore, the load pressure of the source network slice is reduced, and the network resources of the source network slice are optimized.

With reference to the first implementation manner of the eleventh aspect, in a second implementation manner of the eleventh aspect, the first slice control request further includes configuration indication information corresponding to the target network slice, where the configuration indication information is used to instruct the terminal device to perform protocol configuration according to the configuration indication information to access the target network slice. Thus, the terminal device can be correctly accessed into the target network slice.

With reference to the first implementation manner of the eleventh aspect or the second implementation manner of the eleventh aspect, in a third implementation manner of the eleventh aspect, after the processor performs target network slice access authorization on the terminal device, the processor is further configured to: a second slice control request including an identification of the terminal device is transmitted to the target network slice through the transceiver. And the second slice control request is used for indicating the target network slice to establish a bearer for the terminal equipment corresponding to the identifier of the terminal equipment. When the processor determines that the target network slice has established a bearer for the terminal device, a third slice control request including an identification of the terminal device is sent to the source network slice through the transceiver. And the third slice control request is used for indicating the source network slice to remove the bearer established for the terminal equipment corresponding to the identifier of the terminal equipment. And establishing a bearer for the terminal equipment through the target network slice, so that the terminal equipment can be correctly accessed into the target network slice. In order to ensure that the service of the terminal device is not interrupted, the source network slice only removes the bearer established for the terminal device after the target network slice establishes the bearer for the terminal device. And then, the source network slice does not provide service for the terminal equipment any more, so that the load pressure of the source network slice is reduced.

With reference to the first implementation manner of the eleventh aspect, or the second implementation manner of the eleventh aspect, or the third implementation manner of the eleventh aspect, in a fourth implementation manner of the eleventh aspect, the performing, by the processor, target network slice access authorization on the terminal device includes: the processor acquires the identifier of the terminal equipment from the identifier set of the terminal equipment which has accessed to the source network slice, and acquires the subscription information corresponding to the identifier of the terminal equipment from the attribution subscription user server or the policy and charging rule function equipment according to the identifier of the terminal equipment. And if the processor determines that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment according to the subscription information, the processor carries out target network slice access authorization on the terminal equipment. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the first implementation manner of the eleventh aspect or any one implementation manner of the eleventh aspect, in a fifth implementation manner of the eleventh aspect, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

With reference to the eleventh aspect or any one implementation manner of the eleventh aspect, in a sixth implementation manner of the eleventh aspect, the target network slice is a default network slice or a network slice that satisfies a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

With reference to the sixth implementation manner of the eleventh aspect, in a seventh implementation manner of the eleventh aspect, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

With reference to the first implementation manner of the eleventh aspect or any implementation manner of the eleventh aspect, in an eighth implementation manner of the eleventh aspect, the information of the network status sent by the source network slice includes an identifier of the terminal device; the processor performs target network slice access authorization on the terminal equipment, and the method comprises the following steps: the processor obtains the identifier of the terminal device from the network state information, and obtains the subscription information corresponding to the identifier of the terminal device from the home subscriber server or the policy and charging rule function device according to the identifier of the terminal device. And if the processor determines that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment according to the subscription information, the processor carries out target network slice access authorization on the terminal equipment. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the eleventh aspect, or the first implementation manner of the eleventh aspect, or the second implementation manner of the eleventh aspect, or the eighth implementation manner of the eleventh aspect, in a ninth implementation manner of the eleventh aspect, the information of the network state sent by the source network slice includes a first measurement value obtained by measuring a downlink signal sent by the source radio access network device corresponding to the source network slice by the terminal device, a second measurement value obtained by measuring a downlink signal sent by the target radio access network device corresponding to the target network slice by the terminal device, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

With reference to the eleventh aspect or any implementation manner of the eleventh aspect, in a tenth implementation manner of the eleventh aspect, the processor receives, through the transceiver, information of a network state sent by the source network slice, specifically: the processor receives the network state information sent by the radio access network device or the core network user plane device or the core network control plane device through the transceiver, and the radio access network device or the core network user plane device or the core network control plane device is a device in the source network slice.

With reference to the eleventh aspect or any implementation manner of the eleventh aspect, in an eleventh implementation manner of the eleventh aspect, before the processor receives, through the transceiver, the information of the network status transmitted by the source network slice, the processor is further configured to: and receiving a slice access request sent by the terminal equipment through the transceiver. The slice access request includes an identification of the source network slice. And the processor performs source network slice access authorization corresponding to the identification of the source network slice on the terminal equipment according to the slice access request. The processor sends configuration indication information corresponding to the source network slice to the terminal equipment; and the configuration indication information corresponding to the source network slice is used for indicating the terminal equipment to carry out protocol configuration according to the configuration indication information corresponding to the source network slice so as to access the source network slice. Therefore, the success rate of the terminal equipment when the terminal equipment is initially accessed to the source network slice is improved.

With reference to the eleventh implementation manner of the eleventh aspect, in a twelfth implementation manner of the eleventh aspect, after the processor authorizes the terminal device for source network slice access, the processor is further configured to: a sixth slice control request is sent to the source network slice through the transceiver. The sixth slice control request includes an identifier of the terminal device, and the sixth slice control request is used for instructing the source network slice to establish a bearer for the terminal device corresponding to the identifier of the terminal device. Therefore, the terminal equipment can be accessed into the source network slice.

With reference to the eleventh implementation manner of the eleventh aspect or the twelfth implementation manner of the eleventh aspect, in a thirteenth implementation manner of the eleventh aspect, the slice access request further includes an identifier of the terminal device. The processor performs source network slice access authorization corresponding to the source network slice identifier on the terminal equipment according to the slice access request, and the method comprises the following steps: the processor acquires the identifier of the terminal equipment from the slice access request, and acquires the subscription information corresponding to the identifier of the terminal equipment from the attribution subscriber server or the policy and charging rule function equipment according to the identifier of the terminal equipment. And if the processor determines that the terminal equipment can be accessed to the source network slice according to the subscription information and the identifier of the source network slice, the processor performs source network slice access authorization corresponding to the identifier of the source network slice on the terminal equipment. The success rate of the terminal equipment when accessing the source network slice is further improved through the access authorization.

With reference to the eleventh aspect or any implementation manner of the eleventh aspect, in a fourteenth implementation manner of the eleventh aspect, the information of the network state of the source network slice includes information of the network state of the radio access network device in the source network slice and/or information of the network state of the core network user plane device in the source network slice, or the information of the network state of the source network slice includes information of the network state of the core network control plane device in the source network slice and/or information of the network state of the core network user plane device in the source network slice.

In a twelfth aspect, an embodiment of the present invention provides a radio access network device, where the radio access network device is a radio access network device in a source network slice to which a terminal device has access. The radio access network equipment comprises a processor, a memory and a transceiver, wherein the memory is used for storing instructions, and the processor is used for calling the programs and data stored in the memory to execute the following operations: and sending the information of the network state of the source network slice to the core network management equipment through the transceiver. And if the network state of the source network slice meets a first preset condition, receiving a second slice control request which is sent by the core network management equipment and comprises the identifier of the terminal equipment through the transceiver. And removing the load established for the terminal equipment corresponding to the identifier of the terminal equipment according to the second slice control request. And then, the source network slice does not provide service for the terminal equipment any more, so that the load pressure of the source network slice is reduced.

With reference to the twelfth aspect, in a first implementation manner of the twelfth aspect, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

With reference to the twelfth aspect or the first implementation manner of the twelfth aspect, in a second implementation manner of the twelfth aspect, the information of the network status sent by the radio access network device includes an identifier of the terminal device. The identifier of the terminal device is used for indicating the core network management device to acquire subscription information corresponding to the identifier of the terminal device from the attribution subscription user server or the policy and charging rule function device according to the identifier of the terminal device, and if the core network management device determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the core network management device performs target network slice access authorization on the terminal device. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the twelfth aspect, or the first implementation manner of the twelfth aspect, or the second implementation manner of the twelfth aspect, in a third implementation manner of the twelfth aspect, the target network slice is a default network slice or a network slice that meets a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

With reference to the third implementation manner of the twelfth aspect, in a fourth implementation manner of the twelfth aspect, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

With reference to the twelfth aspect or the second implementation manner of the twelfth aspect, in a fifth implementation manner of the twelfth aspect, the information of the network state sent by the radio access network device includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by a source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by a target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

With reference to the twelfth aspect or any implementation manner of the twelfth aspect, in a sixth implementation manner of the twelfth aspect, a terminal device initial access source network slice is described. And the processor receives a sixth slice control request sent by the core network management device through the transceiver, wherein the sixth slice control request is sent to the source network slice by the core network management device according to the slice access request sent by the terminal device. The sixth slice access request includes the identifier of the terminal device. And the processor establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the sixth slice control request. Therefore, the terminal equipment can be accessed into the source network slice.

With reference to the twelfth aspect or any implementation manner of the twelfth aspect, in a seventh implementation manner of the twelfth aspect, the information of the network state of the source network slice includes information of the network state of the radio access network device in the source network slice and/or information of the network state of the core network user plane device in the source network slice.

In a thirteenth aspect, an embodiment of the present invention provides a core network user plane device, where the core network user plane device is a core network user plane device in a source network slice to which a terminal device has access. The core network user plane device comprises a processor, a memory and a transceiver, wherein the memory is used for storing instructions, and the processor is used for calling the instructions stored by the memory to execute the following operations: and sending the information of the network state of the source network slice to the core network management equipment through the transceiver. And if the network state of the source network slice meets a first preset condition, receiving a second slice control request which is sent by the core network management equipment and comprises the identifier of the terminal equipment through the transceiver. And removing the load established for the terminal equipment corresponding to the identifier of the terminal equipment according to the second slice control request. And then, the source network slice does not provide service for the terminal equipment any more, so that the load pressure of the source network slice is reduced.

With reference to the thirteenth aspect, in a first implementation manner of the thirteenth aspect, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

With reference to the thirteenth aspect or the first implementation manner of the thirteenth aspect, in a second implementation manner of the thirteenth aspect, the information of the network status sent by the core network user plane device includes an identifier of the terminal device. The identifier of the terminal device is used for indicating the core network management device to acquire subscription information corresponding to the identifier of the terminal device from the attribution subscription user server or the policy and charging rule function device according to the identifier of the terminal device, and if the core network management device determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the core network management device performs target network slice access authorization on the terminal device. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the thirteenth aspect, or the first implementation manner of the thirteenth aspect, or the second implementation manner of the thirteenth aspect, in a third implementation manner of the thirteenth aspect, the target network slice is a default network slice or a network slice that meets a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

With reference to the third implementation manner of the thirteenth aspect, in a fourth implementation manner of the thirteenth aspect, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

With reference to the thirteenth aspect or the second implementation manner of the thirteenth aspect, in a fifth implementation manner of the thirteenth aspect, the information of the network state sent by the core network user plane device includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by a source core network user plane device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by a target core network user plane device corresponding to the target network slice, and an identifier of the target core network user plane device. The identification of the target core network user plane equipment is used for the core network management equipment to determine the service type corresponding to the target core network user plane equipment. The first preset condition includes: the second measurement value is larger than the first measurement value, and the service type corresponding to the target core network user plane device is inconsistent with the service type corresponding to the source core network user plane device.

With reference to the thirteenth aspect or any implementation manner of the thirteenth aspect, in a sixth implementation manner of the thirteenth aspect, a terminal device initial access source network slice is described. And the processor receives a sixth slice control request sent by the core network management device through the transceiver, wherein the sixth slice control request is sent to the source network slice by the core network management device according to the slice access request sent by the terminal device. The sixth slice access request includes the identifier of the terminal device. And the processor establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the sixth slice control request. Therefore, the terminal equipment can be accessed into the source network slice.

With reference to the thirteenth aspect or any implementation manner of the thirteenth aspect, in a seventh implementation manner of the thirteenth aspect, the information of the network status of the source network slice includes information of the network status of the radio access network device in the source network slice and/or information of the network status of the core network user plane device in the source network slice.

In a fourteenth aspect, an embodiment of the present invention provides a core network control plane device, where the core network control plane device is a core network control plane device in a source network slice to which a terminal device has access. The core network control plane device comprises a processor, a memory and a transceiver, wherein the memory is used for storing instructions, and the processor is used for calling the instructions stored in the memory to execute the following operations: and sending the information of the network state of the source network slice to the core network management equipment through the transceiver. And if the network state of the source network slice meets a first preset condition, receiving a second slice control request which is sent by the core network management equipment and comprises the identifier of the terminal equipment through the transceiver. And removing the load established for the terminal equipment corresponding to the identifier of the terminal equipment according to the second slice control request. And then, the source network slice does not provide service for the terminal equipment any more, so that the load pressure of the source network slice is reduced.

With reference to the fourteenth aspect, in a first implementation manner of the fourteenth aspect, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

With reference to the fourteenth aspect or the first implementation manner of the fourteenth aspect, in a second implementation manner of the fourteenth aspect, the information of the network state sent by the core network control plane device includes an identifier of the terminal device. The identifier of the terminal device is used for indicating the core network management device to acquire subscription information corresponding to the identifier of the terminal device from the attribution subscription user server or the policy and charging rule function device according to the identifier of the terminal device, and if the core network management device determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the core network management device performs target network slice access authorization on the terminal device. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the fourteenth aspect, or the first implementation manner of the fourteenth aspect, or the second implementation manner of the fourteenth aspect, in a third implementation manner of the fourteenth aspect, the target network slice is a default network slice or a network slice that meets a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

With reference to the third implementation manner of the fourteenth aspect, in a fourth implementation manner of the fourteenth aspect, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

With reference to the fourteenth aspect or the second implementation manner of the fourteenth aspect, in a fifth implementation manner of the fourteenth aspect, the information of the network state sent by the core network control plane device includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by a source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by a target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

With reference to the fourteenth aspect or any implementation manner of the fourteenth aspect, in a sixth implementation manner of the fourteenth aspect, a description is given of an initial access source network slice of a terminal device. And the processor receives a sixth slice control request sent by the core network management device through the transceiver, wherein the sixth slice control request is sent to the source network slice by the core network management device according to the slice access request sent by the terminal device. The sixth slice access request includes the identifier of the terminal device. And the processor establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the sixth slice control request. Therefore, the terminal equipment can be accessed into the source network slice.

With reference to the fourteenth aspect or any implementation manner of the fourteenth aspect, in a seventh implementation manner of the fourteenth aspect, the information of the network state of the source network slice includes information of a network state of a core network control plane device in the source network slice and/or information of a network state of a core network user plane device in the source network slice.

In a fifteenth aspect, an embodiment of the present invention provides a terminal device, which includes a processor, a memory, and a transceiver. The memory is used for storing instructions, and the processor is used for calling the instructions stored in the memory to execute the following operations: and receiving a first slice control request sent by the core network management equipment through the transceiver, wherein the terminal equipment has access to the source network slice. The first slice control request is sent to the terminal equipment by the core network management equipment when the network state of the source network slice is judged to meet a first preset condition according to the network state information sent by the source network slice, and the first slice control request comprises an identifier of a target network slice. The processor determines a target network slice corresponding to the identifier for switching from the source network slice to the target network slice according to the first slice control request. Therefore, the load pressure of the source network slice is reduced, and the network resources of the source network slice are optimized.

With reference to the fifteenth aspect, in a first implementation manner of the fifteenth aspect, the first slice control request further includes configuration indication information corresponding to the target network slice; after the processor receives the first slice control request sent by the core network management device through the transceiver, the processor is further configured to: and carrying out protocol configuration according to the configuration indication information to access the target network slice. The success rate of the terminal equipment accessing the target network slice is improved.

With reference to the fifteenth aspect or the first implementation manner of the fifteenth aspect, in a second implementation manner of the fifteenth aspect, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

With reference to the fifteenth aspect, or the first implementation manner of the fifteenth aspect, or the second implementation manner of the fifteenth aspect, in a third implementation manner of the fifteenth aspect, the target network slice is a default network slice or a network slice that satisfies a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

With reference to the third implementation manner of the fifteenth aspect, in a fourth implementation manner of the fifteenth aspect, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

With reference to the fifteenth aspect or the first implementation manner of the fifteenth aspect, in a fifth implementation manner of the fifteenth aspect, the information of the network state sent by the source network slice includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by the source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by the target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

With reference to the fifteenth aspect or any implementation manner of the fifteenth aspect, in a sixth implementation manner of the fifteenth aspect, before the processor receives, through the transceiver, the first slice control request sent by the core network management device, the processor is further configured to: a slice access request including an identification of a source network slice is sent to a core network management device through a transceiver. The slice access request is used for indicating the core network management equipment to perform source network slice access authorization corresponding to the source network slice identification on the terminal equipment, and sending configuration indication information corresponding to the source network slice to the terminal equipment. And the processor receives configuration indication information corresponding to the source network slice sent by the core network management equipment through the transceiver. And the processor performs protocol configuration according to the configuration indication information corresponding to the source network slice so as to access the source network slice. Therefore, the success rate of the terminal equipment when the terminal equipment is initially accessed to the source network slice is improved.

With reference to the sixth implementation manner of the fifteenth aspect, in a seventh implementation manner of the fifteenth aspect, the slice access request further includes an identifier of the terminal device. The identifier of the terminal device is used for indicating the core network management device to acquire subscription information corresponding to the identifier of the terminal device from the attribution subscription user server or the policy and charging rule function device according to the identifier of the terminal device, and if the core network management device determines that the terminal device can be accessed into the source network slice according to the subscription information and the identifier of the source network slice, the core network management device performs source network slice access authorization corresponding to the identifier of the source network slice on the terminal device. The success rate of the terminal equipment when accessing the source network slice is further improved through the access authorization.

With reference to the fifteenth aspect or any implementation manner of the fifteenth aspect, in an eighth implementation manner of the fifteenth aspect, the information of the network state of the source network slice includes information of the network state of the radio access network device in the source network slice and/or information of the network state of the core network user plane device in the source network slice, or the information of the network state of the source network slice includes information of the network state of the core network control plane device in the source network slice and/or information of the network state of the core network user plane device in the source network slice.

In a sixteenth aspect, an embodiment of the present invention provides a core network management device, including a processor, a memory, and a transceiver. The memory is used for storing instructions, and the processor is used for calling the instructions stored in the memory to execute the following operations: and receiving the information of the network state sent by the target network slice through the transceiver, wherein the target network slice is a network slice which fails to be accessed by the terminal equipment, and the terminal equipment is accessed to the source network slice. And if the network state of the target network slice meets a third preset condition, the processor controls the terminal equipment to access the target network slice. Therefore, the requirement that the terminal equipment is simultaneously accessed into two network slices is met.

With reference to the sixteenth aspect, in a first implementation manner of the sixteenth aspect, the processor controlling the terminal device to access the target network slice includes: and the processor performs target network slice access authorization on the terminal equipment. And the processor sends a fourth slice control request to the terminal equipment through the transceiver, wherein the fourth slice control request comprises configuration indication information corresponding to the target network slice. The configuration indication information corresponding to the target network slice is used for indicating the terminal equipment to carry out protocol configuration according to the configuration indication information so as to access the target network slice, so that the terminal equipment can be correctly accessed into the target network slice.

With reference to the first implementation manner of the sixteenth aspect, in a second implementation manner of the sixteenth aspect, after the processor performs target network slice access authorization on the terminal device, the processor is further configured to: transmitting, by the transceiver, a fifth slice control request including an identification of the terminal device to the target network slice. The fifth slice control request is used for indicating the target network slice to establish a bearer for the terminal device corresponding to the identifier of the terminal device, so that the terminal device can be correctly accessed into the target network slice.

With reference to the first implementation manner of the sixteenth aspect or the second implementation manner of the sixteenth aspect, in a third implementation manner of the sixteenth aspect, the performing, by the processor, target network slice access authorization on the terminal device includes: the processor obtains the identifier of the terminal device from the pre-recorded terminal device identifier set, and obtains the subscription information corresponding to the identifier of the terminal device from the attribution subscription user server or the policy and charging rule function device according to the identifier of the terminal device. And if the processor determines that the terminal equipment allows the core network management equipment to carry out network slice access control on the terminal equipment according to the subscription information, the processor carries out target network slice access authorization on the terminal equipment. Whether the access authorization is carried out on the terminal equipment is judged through the subscription information of the terminal equipment, and the accuracy of slice switching control carried out on the terminal equipment by the core network management equipment can be improved.

With reference to the sixteenth aspect or any one implementation manner of the sixteenth aspect, in a fourth implementation manner of the sixteenth aspect, the third preset condition includes: the network resource residual value of the target network slice is greater than or equal to a fifth preset threshold value or the load value of the target network slice is less than or equal to a sixth preset threshold value.

With reference to the sixteenth aspect or any implementation manner of the sixteenth aspect, in a fifth implementation manner of the sixteenth aspect, the receiving, by the processor, information of a network state sent by the target network slice through the transceiver specifically includes: the processor receives the network state information sent by the radio access network device or the core network user plane device or the core network control plane device through the transceiver, and the radio access network device or the core network user plane device or the core network control plane device is a device in the target network slice.

With reference to the sixteenth aspect or any one implementation manner of the sixteenth aspect, in a sixth implementation manner of the sixteenth aspect, before the processor receives, through the transceiver, the information of the network status sent by the target network slice, the processor is further configured to: and receiving a slice access request sent by the terminal equipment through the transceiver. The slice access request includes an identification of the source network slice. And the processor performs source network slice access authorization corresponding to the identification of the source network slice on the terminal equipment according to the slice access request. The processor sends configuration indication information corresponding to the source network slice to the terminal equipment through the transceiver. And the configuration indication information corresponding to the source network slice is used for indicating the terminal equipment to carry out protocol configuration according to the configuration indication information corresponding to the source network slice so as to access the source network slice. Therefore, the success rate of the terminal equipment when the terminal equipment is initially accessed to the source network slice is improved.

With reference to the sixth implementation manner of the sixteenth aspect, in a seventh implementation manner of the sixteenth aspect, after the processor performs, according to the slice access request, a source network slice access authorization corresponding to the identifier of the source network slice on the terminal device, the processor is further configured to: a sixth slice control request including an identification of the terminal device is transmitted to the source network slice through the transceiver. And the sixth slice control request is used for indicating the source network slice to establish a bearer for the terminal equipment corresponding to the identifier of the terminal equipment. Therefore, the terminal equipment can be accessed into the source network slice.

With reference to the sixth implementation manner of the sixteenth aspect or the seventh implementation manner of the sixteenth aspect, in an eighth implementation manner of the sixteenth aspect, the slice access request further includes an identifier of the terminal device. The processor performs source network slice access authorization corresponding to the source network slice identifier on the terminal equipment according to the slice access request, and the method comprises the following steps: the processor acquires the identifier of the terminal equipment from the slice access request, and acquires the subscription information corresponding to the identifier of the terminal equipment from the attribution subscriber server or the policy and charging rule function equipment according to the identifier of the terminal equipment. And if the processor determines that the terminal equipment can be accessed to the source network slice according to the subscription information and the identifier of the source network slice, the processor performs source network slice access authorization corresponding to the identifier of the source network slice on the terminal equipment. The success rate of the terminal equipment when accessing the source network slice is further improved through the access authorization.

With reference to the sixteenth aspect or any implementation manner of the sixteenth aspect, in a ninth implementation manner of the sixteenth aspect, the information of the network state of the target network slice includes information of the network state of the radio access network device in the target network slice and/or information of the network state of the core network user plane device in the target network slice, or the information of the network state of the target network slice includes information of the network state of the core network control plane device in the target network slice and/or information of the network state of the core network user plane device in the target network slice.

In a seventeenth aspect, an embodiment of the present invention provides a radio access network device, where the radio access network device is a radio access network device in a target network slice where access of a terminal device fails, and the terminal device has access to a source network slice. The target network slice comprises a processor, a memory, and a transceiver, wherein the memory is configured to store instructions, and the processor is configured to invoke the memory-stored instructions to perform the following operations: and sending the information of the network state of the target network slice to the core network management equipment through the transceiver. And if the network state of the target network slice meets a third preset condition, the processor receives a fifth slice control request sent by the core network management device through the transceiver, wherein the fifth slice control request comprises the identifier of the terminal device. And the processor establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the fifth slice control request, so that the terminal equipment which is accessed to the source network slice can be simultaneously accessed to the target network slice.

With reference to the seventeenth aspect, in a first implementation manner of the seventeenth aspect, the third preset condition includes: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value.

With reference to the seventeenth aspect or the first implementation manner of the seventeenth aspect, in a second implementation manner of the seventeenth aspect, the information of the network state of the target network slice includes information of the network state of the radio access network device in the target network slice and/or information of the network state of the core network user plane device in the target network slice.

In an eighteenth aspect, an embodiment of the present invention provides a core network user plane device, where the core network user plane device is a core network user plane device in a target network slice where access of a terminal device fails, and the terminal device has access to a source network slice. The target network slice comprises a processor, a memory, and a transceiver, wherein the memory is configured to store instructions, and the processor is configured to invoke the memory-stored instructions to perform the following operations: and sending the information of the network state of the target network slice to the core network management equipment through the transceiver. And if the network state of the target network slice meets a third preset condition, the processor receives a fifth slice control request sent by the core network management device through the transceiver, wherein the fifth slice control request comprises the identifier of the terminal device. And the processor establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the fifth slice control request, so that the terminal equipment which is accessed to the source network slice can be simultaneously accessed to the target network slice.

With reference to the eighteenth aspect, in a first implementation manner of the eighteenth aspect, the third preset condition includes: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value.

With reference to the eighteenth aspect or the first implementation manner of the eighteenth aspect, in a second implementation manner of the eighteenth aspect, the information of the network state of the target network slice includes information of the network state of the radio access network device in the target network slice and/or information of the network state of the core network user plane device in the target network slice.

In a nineteenth aspect, an embodiment of the present invention provides a core network control plane device, where the core network control plane device is a core network control plane device in a target network slice to which a terminal device fails to access, and the terminal device has accessed a source network slice. The target network slice comprises a processor, a memory, and a transceiver, wherein the memory is configured to store instructions, and the processor is configured to invoke the memory-stored instructions to perform the following operations: and sending the information of the network state of the target network slice to the core network management equipment through the transceiver. And if the network state of the target network slice meets a third preset condition, the processor receives a fifth slice control request sent by the core network management device through the transceiver, wherein the fifth slice control request comprises the identifier of the terminal device. And the processor establishes a bearer for the terminal equipment corresponding to the identifier of the terminal equipment according to the fifth slice control request, so that the terminal equipment which is accessed to the source network slice can be simultaneously accessed to the target network slice.

With reference to the nineteenth aspect, in a first implementation manner of the nineteenth aspect, the third preset condition includes: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value.

With reference to the nineteenth aspect or the first implementation manner of the nineteenth aspect, in a second implementation manner of the nineteenth aspect, the information of the network state of the target network slice includes information of the network state of the core network control plane device in the target network slice and/or information of the network state of the core network user plane device in the target network slice.

In a twentieth aspect, an embodiment of the present invention provides a terminal device, including a processor, a memory, and a transceiver. The memory is used for storing instructions, and the processor is used for calling the instructions stored in the memory to execute the following operations: and receiving a fourth slice control request sent by the core network management device through the transceiver, wherein the terminal device has access to the source network slice. The fourth slice control request includes configuration indication information corresponding to the target network slice. And the fourth slice control request is sent to the terminal equipment by the core network management equipment when the network state of the target network slice is judged to meet the third preset condition according to the network state information sent by the target network slice. And the processor performs protocol configuration according to the configuration indication information corresponding to the target network slice so as to access the target network slice. Therefore, the requirement that the terminal equipment is simultaneously accessed into two network slices is met.

With reference to the twentieth aspect, in a first implementation manner of the twentieth aspect, the third preset condition includes: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value.

With reference to the twentieth aspect, or the first implementation manner of the twentieth aspect, in a second implementation manner of the twentieth aspect, the information of the network state of the target network slice includes information of the network state of the radio access network device in the target network slice and/or information of the network state of the core network user plane device in the target network slice, or the information of the network state of the target network slice includes information of the network state of the core network control plane device in the target network slice and/or information of the network state of the core network user plane device in the target network slice.

In a twenty-first aspect, the present invention provides a core network management device, where the core network management device includes a module or a unit configured to execute the network slice control method described in the first aspect or any implementation manner of the first aspect.

In a twenty-second aspect, the present invention provides a radio access network device, which includes a module or a unit for executing the network slice control method described in any one of the implementations of the second aspect or the second aspect.

In a twenty-third aspect, the present invention provides a core network user plane device, where the core network user plane device includes a module or a unit configured to execute the network slice control method described in any one of the implementations of the third aspect or the third aspect.

In a twenty-fourth aspect, the present invention provides a core network control plane device, where the core network control plane device includes a module or a unit configured to execute the network slice control method described in any implementation manner of the fourth aspect or the fourth aspect.

In a twenty-fifth aspect, the present invention provides a terminal device, which includes a module or a unit for executing the network slice control method described in any one of the implementations of the fifth aspect or the fifth aspect.

In a twenty-sixth aspect, the present invention provides a core network management device, where the core network management device includes a module or a unit configured to execute the network slice control method described in any one of the implementations of the sixth aspect or the sixth aspect.

In a twenty-seventh aspect, the present invention provides a radio access network device, which includes a module or a unit configured to execute the network slice control method described in any one of the implementations of the seventh aspect or the seventh aspect.

In a twenty-eighth aspect, the present invention provides a core network user plane device, which includes a module or a unit for executing the network slice control method described in any one of the implementations of the eighth aspect or the eighth aspect.

In a twenty-ninth aspect, the present invention provides a core network control plane device, where the core network control plane device includes a module or a unit configured to execute the network slice control method described in any one implementation manner of the ninth aspect or the ninth aspect.

In a thirtieth aspect, the present invention provides a terminal device comprising means or units for performing the network slice control method described in any one of the implementations of the tenth or tenth aspect.

In a thirty-first aspect, the present invention provides a communication system, including a core network management device, a radio access network device and a terminal device, where the core network management device is the core network management device described in the eleventh aspect or the twentieth aspect, the radio access network device is the radio access network device described in the twelfth aspect or the twenty-second aspect, and the terminal device is the terminal device described in the fifteenth aspect or the twenty-fifth aspect; alternatively, the core network management device is the core network management device described in the sixteenth aspect or the twenty-sixth aspect, the radio access network device is the radio access network device described in the seventeenth aspect or the twenty-seventh aspect, and the terminal device is the terminal device described in the twentieth aspect or the thirtieth aspect.

In a thirty-second aspect, the present invention provides a communication system, including a core network management device, a core network user plane device and a terminal device, where the core network management device is the core network management device described in the eleventh aspect or the twenty-first aspect, the core network user plane device is the core network user plane device described in the thirteenth aspect or the twenty-third aspect, and the terminal device is the terminal device described in the fifteenth aspect or the twenty-fifth aspect; or, the core network management device is the core network management device described in the sixteenth aspect or the twenty-sixth aspect, the core network user plane device is the core network user plane device described in the eighteenth aspect or the twenty-eighth aspect, and the terminal device is the terminal device described in the twentieth aspect or the thirtieth aspect.

A thirty-third aspect of the present invention provides a communication system, including a core network management device, a core network control plane device, and a terminal device, where the core network management device is the core network management device described in the eleventh aspect or the twentieth aspect, the core network control plane device is the core network control plane device described in the fourteenth aspect or the twenty-fourth aspect, and the terminal device is the terminal device described in the fifteenth aspect or the twenty-fifth aspect; or, the core network management device is the core network management device described in the sixteenth aspect or the twenty sixth aspect, the core network control plane device is the core network control plane device described in the nineteenth aspect or the twenty ninth aspect, and the terminal device is the terminal device described in the twentieth aspect or the thirtieth aspect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic architecture diagram of a network system provided in the present patent application;

FIG. 2 is a schematic diagram of an architecture of another network system provided in the present patent application;

fig. 3 is a signaling interaction diagram of a first embodiment of a network slice control method provided in the present patent application;

fig. 4 is a signaling interaction diagram of a second embodiment of a network slice control method provided in the present patent application;

fig. 5 is a signaling interaction diagram of a third embodiment of a network slice control method provided in the present patent application;

fig. 6 is a signaling interaction diagram of a fourth embodiment of a network slice control method provided in the present patent application;

fig. 7 is a signaling interaction diagram of a fifth embodiment of a network slice control method provided in the present patent application;

fig. 8 is a signaling interaction diagram of a sixth embodiment of a network slice control method provided in the present patent application;

Fig. 9 is a schematic structural diagram of a core network management device provided in the present patent application;

fig. 10 is a schematic structural diagram of a radio access network device provided in the present patent application;

fig. 11 is a schematic structural diagram of a core network user plane device provided in the present patent application;

fig. 12 is a schematic structural diagram of a core network control plane device provided in this patent application;

fig. 13 is a schematic structural diagram of a terminal device provided in the present patent application;

fig. 14 is a schematic structural diagram of another core network management device provided in the present patent application;

fig. 15 is a schematic structural diagram of another radio access network device provided in the present patent application;

fig. 16 is a schematic structural diagram of another core network user plane device provided in the present patent application;

fig. 17 is a schematic structural diagram of another core network control plane device provided in this patent application;

fig. 18 is a schematic structural diagram of another terminal device provided in the present patent application.

Detailed Description

The terminology used in the description of the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention.

Fig. 1 is a schematic architecture diagram of a network system provided in the present application. As shown in fig. 1, each Network slice includes a Radio Access Network (RAN) device and a Core Network (CN) User Plane (UP) device. All network slices share a common core network Control Plane (CP) device, and the common core network Control Plane device may provide functions including: session management, mobility management, user authentication, service authorization, quality of service control, and the like. The radio access network equipment in the network slice is connected with the core network user plane equipment through an interface, the radio access network equipment is connected with the public core network control plane equipment through an interface, and the core network user plane equipment is connected with the public core network control plane equipment through an interface. The functions of the radio access network device include, but are not limited to: the functions of mobility management, call processing, link management, security encryption, header compression, scheduling, encoding, modulation, demodulation, retransmission, segmentation, aggregation, radio frequency and the like for the terminal equipment. The functions of the core network user plane device include, but are not limited to: and the functions of routing, filtering, forwarding and the like of the data packet are performed. The core Network user plane device sends user Data from the terminal device to other devices, and may also send Data from other devices to the terminal device, where the other devices include, but are not limited to, a server and a Packet Data Network (PDN for short).

In fig. 1, a terminal device 14 has access to a network slice 11. The network slice 11 comprises radio access network devices 111 and core network user plane devices 112. The terminal device 15 is accessed into the network slice 12. The network slice 12 comprises radio access network devices 121 and core network user plane devices 122. The terminal device 16 is accessed into the network slice 13. The network slice 13 includes radio access network devices 131 and core network user plane devices 132. The traffic types corresponding to each of the network slice 11, the network slice 12, and the network slice 13 may be the same or different. The radio access network device 111, the radio access network device 121, and the radio access network device 131 may be three mutually independent radio access network devices, or may be the same radio access network device. If the radio access network device 111, the radio access network device 121, and the radio access network device 131 are the same radio access network device, the network slice 11, the network slice 12, and the network slice 13 occupy different resources of the radio access network device, so as to distinguish them from each other. Wherein the resources include, but are not limited to: antennas, beams, time-frequency resources, storage resources, etc.

The radio Access network device described in the embodiment of the present invention may be a Base Transceiver Station (BTS) in a 2G (e.g. Global System for Mobile Communications, GSM for short) or Code Division Multiple Access (CDMA) System), or may be a Base Station (NB) in a 3G (e.g. Universal Mobile Telecommunications System, UMTS for short), Wideband Code Division Multiple Access (WCDMA for short), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA for short) System, or may be a Long Term Evolution (LTE for short), for short: eNB) may also be a radio access network device in future 5G networks.

The core network control plane device common to all network slices includes a mobility management device 17, a home subscriber server 18, a policy and charging rule function device 19, a Slice Manager (SM) 20, and a protocol configuration device 21. Mobility management device the mobility management device 17, the slice manager 20, and the protocol configuration device 21 may be disposed on the same physical entity, or may be disposed on different physical entities separately. The slice manager 20 is connected with the mobility management device 17 and the protocol configuration device 21, respectively, and the mobility management device 17, the slice manager 20, and the protocol configuration device 21 are connected with the home subscriber server 18 or the policy and charging rule function device 19, respectively.

Wherein the main functions of the mobility management device 17 include: access control (including security and admission control), mobility management (tracking the location of the terminal device), attach and detach, session management functions (including establishment, modification, and release of an Evolved Packet Core (EPC) bearer), and the like. The home subscriber server 18 is mainly used for storing subscription information of a user and managing subscription data of the user and location information of a mobile subscriber. The policy and charging rules function device 19 mainly includes: and according to the subscription information of the user, the used service information makes policy and charging decision, such as service quality level, charging rule and the like.

Solid line "-" in FIG. 1 represents a connection of the user plane, and dotted line

Representing the connection of the control plane. Terminal deviceThere is both a user plane connection and a control plane connection between the device and the network slice. The radio access network device in this embodiment has an access network control plane function and an access network user plane function. The radio access network device is also interfaced with a mobility management device.

The core network management device described in the following embodiments includes a slice manager 20 and a protocol configuration device 21. The slice manager 20 and the protocol configuration device 21 may be located in the same physical entity or in different physical entities, which are connected via an interface. The core network management device may be located in an entity in the existing network, which logically functionally implements the function of the core network management device. The slice manager 20 is responsible for generation of network slices, resource allocation, access selection, access authorization, and the like. Wherein the slice manager 20 completes the generation of the network slices by establishing connections and bearers for each network slice. And selecting a default network slice for the terminal equipment according to the subscription information of the terminal equipment to realize access selection. When the terminal device needs to switch or simultaneously access the network slice, the terminal device is authorized to realize access authorization when the terminal device can switch to the target network slice or access the target network slice. The protocol configuration device 21 is configured to perform protocol configuration on the network entity function on the network slice according to the service type supported on the network slice, and select protocol configuration information corresponding to the network slice to which the terminal device needs to access. Different types of traffic may be carried on different network slices. The terminal device may access different network slices to perform different services.

When a first type of traffic is ongoing on the terminal device 14, it may access the source network slice, which is assumed to be network slice 11. The network slice control method provided by the embodiment of the invention can be applied to the following three scenes. Scene one: the terminal device 14 initially accesses the network slice 11, but since the first type of traffic is a more network resource consuming traffic, some time later the slice manager 20 initiates a handover of the terminal device 14 to the network slice 12 for network resource optimization purposes, the network slice 12 being a default network slice with low power consumption or a target network slice with a lower load. Scene two: when the terminal device 14 initially accesses the network slice 11, after a while, the terminal device 14 moves from the coverage of the radio access network device 111 of the network slice 11 to the coverage of the radio access network device 121 of the network slice 12, but the network slice 12 does not support the first type of service, and only supports a default service, which can generally support the basic communication service requirements of the user, such as voice call, short message, etc. In order to ensure that the user can normally access the network, the network can not be disconnected. Slice manager 20 switches terminal device 14 to network slice 12. Scene three: the terminal device 14 initially accesses the network slice 11 and after a period of time the slice manager initiates simultaneous access of the terminal device to the network slice 12 so that the terminal device 14 can conduct the second type of service. For example, the terminal device 14 initially requested access to the network slice 12, but due to insufficient resources of the network slice 12, the access request is denied. After a period of time, the network slice 12 has a user release and sufficient resources, and thus the slice manager 20 initiates the process of the terminal device 14 accessing the network slice 12.

The terminal device in the embodiment of the present invention may be a handheld device, a vehicle-mounted device, a wearable device, a computing device, various forms of User Equipment (UE), a Mobile Station (MS), a terminal (terminal), and the like.

Fig. 2 is a schematic architecture diagram of another network system provided in the present application. As shown in fig. 2, the network slices are split in the core network, and all the network slices share the radio access network device, for example, the network slice 21, the network slice 22, and the network slice 23 share the radio access network device 25. And all network slices share a common core network control plane device, which may provide functions including: mobility management, user authentication, etc. The slice manager and the protocol configuration device related to the invention also belong to the control plane device of the common core network. Each network slice has a respective core network user plane device and a core network control plane device, and the functions provided by the core network control plane device of each network slice may include: session management, etc. The functions of part of the core network control plane are independently arranged on each network slice, so that the network slices are isolated from each other, and the network slices cannot be influenced with each other. The core network control plane device in the network slice is connected with the core network user plane device through an interface, and the core network control plane device in the network slice is connected with the common core network control plane device through an interface.

The common core network control plane device includes a mobility management device, a mobility management device 26, a home subscriber server 27, a policy and charging rules function device 28, a slice manager 29, and a protocol configuration device 30. The functions of the mobility management device 26, the home subscriber server 27, the policy and charging rule function device 28, the slice manager 29, and the protocol configuration device 30 may refer to the description in the embodiment shown in fig. 1, and are not described herein again. Solid line "-" in FIG. 2 represents a connection of the user plane, and dotted line

Representing the connection of the control plane.

When a first type of traffic is ongoing on the terminal device 24, it may access the source network slice, which is assumed to be network slice 21. The network slice control method provided by the embodiment of the invention can be applied to the following two scenes. Scene one: terminal device 24 initially accesses network slice 21, but since the first type of traffic is a more network resource consuming traffic, after some time slice manager 29 initiates a handover of terminal device 24 to network slice 22 for network resource optimization purposes, network slice 22 being a default network slice with low power consumption or a target network slice with a lower load. In scenario two, the terminal device 24 initially accesses the network slice 21, and after a period of time, the terminal device 24 moves from the coverage area of the radio access network device 25 to the coverage area of another radio access network device (not shown), the another radio access network device does not support the first type of service, and only supports a default service, and the default service can generally support the basic communication service requirements of the user, such as voice call, short message, and the like. In order to ensure that the user can normally access the network, the network can not be disconnected. Slice manager 29 switches terminal device 24 to network slice 22. In scenario three, the terminal device 24 initially accesses the network slice 21, and after a period of time, the slice manager initiates that the terminal device 24 simultaneously accesses the network slice 22, so that the terminal device 24 can perform the second type of service. For example, terminal device 24 initially requested access to network slice 22, but due to insufficient network slice 22 resources, the access request is denied. After a period of time, network slice 22 has a user release and sufficient resources, and thus slice manager 29 initiates the process of terminal device 24 accessing network slice 22.

The terminal device in the embodiment of the invention can be handheld device, vehicle-mounted device, wearable device, computing device, UE in various forms, MS, terminal and the like.

Fig. 3 is a signaling interaction diagram of a first embodiment of a network slice control method provided in the present application, which can be applied to the network architecture shown in fig. 1. In the embodiment of the present invention, the source network slice is a network slice to which the terminal device has access, and the target network slice is a network slice to which the terminal device is to be switched. The source network slice and the target network slice both include radio access network equipment and core network user plane equipment. The embodiment of the invention can be applied to scene one: the method comprises the steps that a terminal device is accessed to a source network slice at the beginning, but the service of the source network slice is a service which consumes network resources, after a period of time, a core network management device initiates switching of the terminal device to a target network slice for the purpose of network resource optimization so as to reduce the load pressure of the source network slice, wherein the target network slice is a default network slice with low network resource consumption or a network slice with low load. As shown in fig. 3, the network slice control method provided in the embodiment of the present invention includes the following steps:

S301: and the wireless access network equipment of the source network slice sends the information of the network state of the source network slice to the core network management equipment. And the core network management equipment receives the information of the network state of the source network slice, which is sent by the wireless access network equipment of the source network slice.

Specifically, the source network slice is a network slice that is accessed by the terminal device in advance according to the user requirement. In order to avoid performance degradation of the terminal device accessed to the source network slice due to excessive terminal devices accessed to the source network slice, the core network management device may monitor a network state of the source network slice, and when the network state of the source network slice meets a preset condition, the core network management device switches part or all of the terminal devices accessed to the source network slice to a target network slice, so as to reduce load pressure of the source network slice. The wireless access network equipment of the source network slice sends the network state information of the source network slice to the core network management equipment, so that the core network management equipment can acquire the network state of the source network slice, and network resource optimization is carried out on the source network slice according to the network state. The radio access network device of the source network slice may periodically send information of the network status. For example, the radio access network device of the source network slice transmits information of the network status every five minutes. The source network slice and the core network management device may agree on a periodicity in advance. The radio access network device of the source network slice may also send information of the network state based on an event trigger. For example, when the load of the source network slice is higher than a certain threshold value, the information of the network state is triggered to be sent to the core network management device.

The network state information of the source network slice may include information of a network state of a radio access network device in the source network slice, the network state information of the source network slice may include information of a network state of a core network user plane device in the source network slice, and the network state information of the source network slice may include both the information of the network state of the radio access network device in the source network slice and the information of the network state of the core network user plane device in the source network slice. The information of the network status may include a remaining value or a load value of the network resource, for example, the information of the network status is a ratio of the current available resource to the total available resource of the network slice or a ratio of the current network load to the maximum capacity of the network. The information of network status may also include network status, such as insufficient network resources or excessive load.

It should be noted that, if the core network management device and the mobility management device are integrated on the same physical entity, the radio access network device of the source network slice sends the network state information of itself to the core network management device. And the core network management equipment receives the information of the network state sent by the wireless access network equipment of the source network slice. If the core network management device and the mobility management device are separately disposed on different physical entities, the radio access network device in the source network slice may first send information of its own network state to the mobility management device. And the mobility management equipment sends the network state information of the source network slice to the core network management equipment. And the core network management equipment receives the network state information of the source network slice sent by the mobility management equipment.

S302: the core network management device determines whether the network state of the source network slice meets a first preset condition, and if so, executes step S303.

Wherein, the first preset condition comprises: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value. For example, the first preset threshold is: 10%, the second preset threshold is: 90 percent. When the network resource residual value of the source network slice is smaller than or equal to a first preset threshold value or the load value of the source network slice is larger than or equal to a second preset threshold value, the core network management equipment judges that the network state of the source network slice meets a first preset condition. The first preset condition may also be: the network state is insufficient network resources or overload. When the information of the network state of the source network slice indicates that the network resources are insufficient or the load is too large, the core network management device judges that the network state of the source network slice meets a first preset condition.

S303: and the core network management equipment controls the terminal equipment to be switched from the source network slice to the target network slice.

When the network state of the source network slice meets a first preset condition, the core network management device may switch some or all terminal devices connected to the source network slice to the target network slice, so as to reduce the load pressure of the source network slice. The target network slice may be a default network slice with low network resource consumption. The default network slice only supports the basic communication service requirements of the user, such as voice call, short message and the like. Also, the default network slice may support high capacity users. Or the target network slice is a network slice meeting a second preset condition. The second preset condition may be: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value. For example, the third preset threshold is: 50%, the fourth preset threshold is: 50 percent. Each network slice can trigger to send its own network state information to the core network management device periodically or in an event, so that the core network management device can know the network state of each network slice, and therefore when the load of a source network slice accessed by the terminal device is large or the network resource is insufficient, a target network slice with small load or sufficient network resource is selected for slice switching.

Specifically, the step of the core network management device controlling the terminal device to switch from the source network slice to the target network slice includes the following steps S3031 to S3038, and each step is described in detail as follows:

s3031: and the core network management equipment performs target network slice access authorization on the terminal equipment.

Specifically, in an implementation manner, the core network management device records identifiers of all terminal devices that have access to the source network slice. The core network management equipment acquires one or more terminal equipment identifications from the terminal equipment identification set accessed to the source network slice. For example, the identifier of the terminal device may be an International Mobile Subscriber Identity (IMSI) or the like. And the core network management equipment acquires the subscription information corresponding to the identifier of the terminal equipment from the home subscriber server or the policy and charging rule function equipment according to the identifier of the terminal equipment. And if the core network management equipment determines that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment according to the subscription information, the core network management equipment carries out target network slice access authorization on the terminal equipment. The subscription information here may include indication information of whether the terminal device subscribes at the time of network entry to allow the core network management device to initiate slice switching. Optionally, the subscription information may further include Quality of Service (QoS) information of the user, where the QoS information may include: one or more of latency, false alarm rate, data transmission rate, bandwidth, service priority.

Or, when sending the network state information of the source network slice to the core network management device, the radio access network device of the source network slice may also send an identifier of a terminal device with a larger occupied network resource or network resources currently connected to the source network slice to the core network management device. The core network management equipment acquires the identifier of the terminal equipment from the network state information, and acquires the subscription information corresponding to the identifier of the terminal equipment from the attribution subscription user server or the strategy and charging rule function equipment according to the identifier of the terminal equipment. And if the core network management equipment determines that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment according to the subscription information, the core network management equipment carries out target network slice access authorization on the terminal equipment.

When the core network management device determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the core network management device may determine in the following manner: and if the subscription information of the terminal equipment comprises indication information for indicating to receive the slice switching initiated by the core network management equipment, the core network management equipment determines that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment. Of course, the core network management device may also determine in other manners, which is not limited in this embodiment.

The core network management device may also consider QoS information of the terminal devices when determining which terminal devices that have access to the source network slice need to be switched, and the number of the terminal devices that need to be switched to the slice may be preset by the core network management device, or may be dynamically adjusted by the core network management device according to the network state of the source network slice. Taking the service priority in the QoS information as an example for explanation, if the number of the terminal devices currently connected to the source network slice includes 3, which are respectively terminal device 1, terminal device 2, and terminal device 3, where the service priorities of the 3 terminal devices are respectively: priority 1, priority 2, and priority 3. If the core network management device determines that the 3 terminal devices all allow the core network management device to perform network slice switching control on the terminal devices, and the number of the terminal devices performing slice switching preset by the core network management device is 2, the core network management device selects the terminal device 2 and the terminal device 3 with smaller service priority to perform slice switching. Therefore, the service of the user of the terminal equipment with high priority is not affected, the user of the terminal equipment with low priority is switched to the default network slice, and the situation of network disconnection is avoided. The situation that all terminal equipment cannot access the network due to network paralysis of the source network slice is avoided.

S3032: the core network management device sends a first slice control request to the terminal device through the wireless access network device of the source network slice. The terminal equipment receives a first slice control request sent by the core network management equipment through the radio access network equipment of the source network slice.

Wherein the first slice control request at least comprises the identification of the target network slice. The identification of the target network slice is used for the terminal device to confirm which network slice to switch to.

Optionally, the first slice control request may further carry an identifier of a request type, so as to indicate what type the first slice control request is. In the embodiment of the present invention, the request type identifier carried by the first slice control request is a slice switching type identifier.

Specifically, if the core network management device and the mobility management device are integrated on the same physical entity, the core network management device may first send the first slice control request to the radio access network device of the source network slice, and then the radio access network device of the source network slice sends the first slice control request to the terminal device. The terminal equipment receives a first slice control request sent by the wireless access network equipment of a source network slice. If the core network management device and the mobility management device are separately disposed on different physical entities, the core network management device may first send the first slice control request to the mobility management device of the control plane. And the mobility management equipment sends the first slice control request to the radio access network equipment in the source network slice. And the wireless access network equipment in the source network slice sends the first slice control request to the terminal equipment. The terminal equipment receives a first slice control request sent by the wireless access network equipment in the source network slice.

Optionally, if the service type corresponding to the target network slice is inconsistent with the service type corresponding to the source network slice, the first slice control request further includes configuration indication information corresponding to the target network slice. The configuration indication information is used for indicating the terminal equipment to carry out protocol configuration according to the configuration indication information so as to access the target network slice.

The configuration indication information corresponding to the target network slice may be protocol configuration information corresponding to the target network slice, an identifier of the target network slice, or a service type corresponding to the target network slice.

S3033: and the terminal equipment determines to switch from the source network slice to the target network slice according to the first slice control request.

S3034: and the core network management equipment sends a second slice control request to the wireless access network equipment of the target network slice, and the wireless access network equipment of the target network slice receives the second slice control request sent by the core network management equipment.

Wherein the second slice control request comprises an identification of the terminal device. The second slice control request is used for indicating the target network slice to establish a bearer for the terminal device.

Optionally, the second slice control request may further carry an identifier of a request type, so as to indicate what type the second slice control request is. In the embodiment of the present invention, the request type identifier carried by the second slice control request is a slice switching type identifier.

S3035: and the target network slice establishes a bearer for the terminal equipment according to the second slice control request.

Specifically, the target network slice establishes a control plane bearer from the terminal device to the radio access network device and a control plane bearer from the radio access network device to the core network management device, and establishes a user plane bearer from the terminal device to the radio access network device and a user plane bearer from the radio access network device to the core network user plane device.

S3036: after the target network slice establishes a bearer for the terminal device, the radio access network device of the target network slice sends a bearer establishment completion confirmation message to the core network management device, and the core network management device receives the bearer establishment completion confirmation message sent by the radio access network device of the target network slice.

The core network management device can determine that the target network slice establishes the bearer for the terminal device according to the bearer establishment completion confirmation message.

S3037: and the core network management equipment sends a third slice control request to the wireless access network equipment of the source network slice, and the wireless access network equipment of the source network slice receives the third slice control request sent by the core network management equipment.

Wherein the third slice control request comprises an identification of the terminal device. The third slice control request is used for instructing the source network slice to tear down the bearer established for the terminal device.

Optionally, the third slice control request may further carry an identifier of a request type, so as to indicate what type the third slice control request is. In the embodiment of the present invention, the request type identifier carried by the third slice control request is a slice switching type identifier.

S3038: and the source network slice removes the load established for the terminal equipment according to the third slice control request.

Specifically, the source network slice removes a user plane bearer from the terminal device to the radio access network device and a control plane bearer from the radio access network device to the core network management device, and removes a user plane bearer from the terminal device to the radio access network device and a user plane bearer from the radio access network device to the core network user plane device. The load established for the terminal equipment is removed, corresponding resources can be released, and network resource occupation is saved.

S3039: and the wireless access network equipment of the source network slice sends a slice switching success message to the core network management equipment. And the core network management equipment receives a slice switching success message sent by the wireless access network equipment of the source network slice.

Optionally, after step S3033, step S30310 may further be included: and the terminal equipment sends a slice control response message to the core network management equipment through the wireless access network equipment of the source network slice. And the core network management equipment receives a slice control response message sent by the terminal equipment through the wireless access network equipment of the source network slice. The slice control response message is used for indicating the terminal equipment to accept the slice switching operation. The core network management device triggers the step S3034 to be executed after receiving the slice control response message.

Optionally, if the first slice control request further includes configuration indication information corresponding to the target network slice, after step S3033, further includes step S30311: and the terminal equipment performs protocol configuration according to the configuration indication information corresponding to the target network slice so as to access the target network slice. The execution order of steps S30310 and S30311 is not limited.

The configuration indication information corresponding to the target network slice may be protocol configuration information corresponding to the target network slice, including which protocol layers need to be configured, which functions need to be configured by each protocol layer, and the like. And the terminal equipment performs corresponding configuration according to the protocol configuration information corresponding to the target network slice. Or, the configuration indication information corresponding to the target network slice may also be an identifier of the target network slice, and the terminal device locally stores protocol configuration information corresponding to identifiers of different network slices. And the terminal equipment searches protocol configuration information corresponding to the identification of the target network slice according to the identification of the target network slice sent by the core network management equipment, and performs corresponding configuration according to the protocol configuration information. Or, the configuration indication information corresponding to the target network slice may also be a service type corresponding to the target network slice. The terminal equipment locally stores protocol configuration information corresponding to network slices of different service types, and searches the protocol configuration information corresponding to the service type of a target network slice according to the service type of the target network slice sent by the core network management equipment and carries out corresponding configuration according to the protocol configuration information.

It should be noted that, if the configuration indication information corresponding to the target network slice is the protocol configuration information corresponding to the target network slice, when the slice manager and the protocol configuration device in the core network management device are located in the same entity, that is, integrated together, the core network management device may obtain the protocol configuration information corresponding to the target network slice from the core network management device after performing target network slice access authorization on the terminal device.

Specifically, the terminal device in the embodiment of the present invention is a terminal device having a protocol configuration function.

When the terminal device performs protocol configuration according to the protocol configuration information corresponding to the target network slice, there are two implementation manners:

the first implementation mode comprises the following steps: the terminal equipment only stores one kind of basic protocol configuration information, and after the terminal equipment acquires the protocol configuration information corresponding to the target network slice, the terminal equipment performs configuration on the basis of the basic protocol configuration information so as to ensure that the protocol stack of the terminal equipment can be matched with the target network slice.

The second implementation mode comprises the following steps: the terminal device stores a plurality of different protocol configuration information, and after acquiring the protocol configuration information corresponding to the target network slice, the terminal device selects the protocol configuration information which is the same as the protocol configuration information corresponding to the target network slice to complete configuration.

At this point, the terminal device switches from the source network slice to the target network slice.

The execution sequence of step S3032 and step S3034 in the present embodiment is not particularly limited. After the core network management device performs target network slice access authorization on the terminal device, a first slice control request may be sent to the terminal device through the radio access network device of the source network slice, and then a second slice switching control request may be sent to the radio access network device of the target network slice. Or, after the core network management device performs target network slice access authorization on the terminal device, the core network management device may first send the second slice switching control request to the radio access network device of the target network slice, and then send the first slice switching control request to the terminal device through the radio access network device of the source network slice. And step S3035 and step S3038 have a time sequence relationship, that is, the bearer between the terminal device and the target network slice is established first, and then the bearer between the terminal device and the source network slice is removed. This ensures that the service on the terminal device is not interrupted.

For example, the terminal device has accessed an evolved large bandwidth (e.g., an evolved Massive Broadband (eMBB) network slice for performing a video service, because the eMBB service is a service that consumes network resources, after a period of time, the eMBB network slice has too large a load due to more accessed terminal devices, has less remaining network resources, and cannot support normal use of all currently accessed terminal devices, and in order to avoid a problem of a network breakdown that causes a drop of the terminal device, the core network management device switches a part or all of the terminal devices that have accessed the eMBB network slice from the eMBB to a default network slice or other network slices that satisfy a second preset condition, thereby reducing a load pressure of the eMBB network slice. The second preset condition may be, for example, that the load value is less than or equal to a threshold value or the network resource remaining value is greater than or equal to a threshold value.

In the network slice control method provided by the embodiment of the invention, the terminal equipment is accessed into the source network slice, the wireless access network equipment of the source network slice sends the information of the network state to the core network management equipment, and the core network management equipment receives the information of the network state sent by the wireless access network equipment of the source network slice. If the network state of the source network slice meets a first preset condition, the core network management equipment controls the terminal equipment which has access to the source network slice to be switched to the target network slice from the source network slice, so that the network load of the source network slice is reduced, and the resource optimization of the source network slice is realized.

In addition, the embodiment shown in fig. 3 can also be applied to scenario two: the method comprises the steps that a terminal device is accessed to a source network slice at the beginning, after a period of time, the terminal device moves from the coverage range of a wireless access network device in the source network slice to the coverage range of a wireless access network device in a target network slice, but the target network slice does not support services corresponding to the source network slice, and in order to guarantee that the terminal device is not disconnected, a core network management device switches the terminal device from the source network slice to the target network slice. For convenience of description, the radio access network device in the target network slice is named as a target radio access network device, and the radio access network device in the source network slice is named as a source radio access network device, where the terminal device currently resides.

In scenario two, the steps are similar to the implementation process of the steps in scenario one shown in fig. 3, except that, for step S302, the terminal device periodically sends a measurement report to the radio access network device of the source network slice, so as to feed back, to the source radio access network device, the channel quality between the terminal device and the source radio access network device, where the channel quality may be embodied by a signal measurement value. The measurement report may also be a feedback from the terminal device based on a measurement report request sent by the source radio access network device. The source wireless access network equipment sends a measurement report reporting request to the terminal equipment, and the terminal equipment receives the measurement report reporting request sent by the source wireless access network equipment. And the terminal equipment sends the measurement report to the source wireless access network equipment. And the source wireless access network equipment receives the measurement report sent by the terminal equipment. The measurement report may also be reported to the source radio access network device when the downlink measurement result of the terminal device meets a certain measurement event. The measurement event may be: the measured value of the downlink signal of the terminal device to the source wireless access network device is lower than a certain threshold value, and the measured value of the downlink signal of the terminal device to the target wireless access network device is higher than a certain threshold value. The measurement event may also be: the measured value of the downlink signal of the terminal device to the target wireless access network device is higher than a certain threshold value. Here, the target radio access network device may be some neighboring radio access network device of the source radio access network device.

The measurement report includes a first measurement value obtained by measuring the downlink signal of the source wireless access network device by the terminal device, a second measurement value obtained by measuring the downlink signal of the target wireless access network device by the terminal device, and an identifier of the target wireless access network device. And when the source wireless access network equipment determines that the measured value of the terminal equipment to the source wireless access network equipment is lower than a certain threshold according to the measurement report, or when the measured value of the terminal equipment to the source wireless access network equipment is lower than the certain threshold and the measured value of the terminal equipment to the target wireless access network equipment is higher than the certain threshold, the source wireless access network equipment sends network state information to the core network management equipment. And the core network management equipment receives the network state information sent by the source wireless access network equipment. The network state information includes a first measurement value obtained by measuring a downlink signal sent by the source wireless access network device by the terminal device, a second measurement value obtained by measuring a downlink signal sent by the target wireless access network device by the terminal device, and an identifier of the target wireless access network device.

The first preset condition in this scenario is: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device. Specifically, the core network management device judges whether the second measurement value is larger than the first measurement value according to the information of the network state sent by the source wireless access network device, if so, the core network management device searches the service type corresponding to the target wireless access network device according to the identifier of the target wireless access network device and searches the service type corresponding to the source wireless access network device according to the identifier of the source wireless access network device, and if not, the core network management device indicates that the terminal device moves from the coverage of the source wireless access network device to the coverage of the target wireless access network device. And the core network management equipment judges whether the service type corresponding to the target wireless access network equipment is inconsistent with the service type corresponding to the source wireless access network equipment, and if so, the core network management equipment triggers the switching of the terminal equipment from the source network slice to the target network slice. Optionally, the identifier of the source radio access network device may be carried in the information of the network state and sent to the core network management device.

Optionally, the information of the network state further includes an identifier of the terminal device, and the authorization of the core network management device for performing target network slice access on the terminal device specifically includes: the core network management equipment acquires the identifier of the terminal equipment from the information of the network state, and acquires the subscription information corresponding to the identifier of the terminal equipment from the attribution subscription user server or the strategy and charging rule function equipment according to the identifier of the terminal equipment. And if the core network management equipment determines that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment according to the subscription information, the core network management equipment carries out target network slice access authorization on the terminal equipment.

It should be noted that, in the second scenario, the service type corresponding to the radio access network device in the target network slice is similar to and inconsistent with the service corresponding to the radio access network device in the source network slice, and therefore, the terminal device needs to perform protocol configuration according to the configuration indication information corresponding to the target network slice sent by the core network management device to access the target network slice. Therefore, in scenario two, the terminal device needs to perform step S30311.

According to the network slice control method provided by the embodiment of the invention, the terminal equipment is accessed into the source network slice, the source network slice sends the information of the network state to the core network management equipment, and the core network management equipment receives the information of the network state sent by the source network slice. If the information of the network state meets the first preset condition, the core network management device controls the terminal device which has access to the source network slice to be switched to the target network slice from the source network slice, so that the load pressure of the source network slice is relieved, the terminal device which does not have slice switching in the source network slice is better served, and the situation that all terminal devices cannot access the network due to network paralysis of the source network slice is avoided. Meanwhile, terminal equipment with slice switching in the source network slice can be accessed to the target network slice to keep network connection instead of direct network disconnection. And according to the scheme of the invention, the terminal device does not need to perform all operations of re-network entry, because the terminal device has access to the source network slice, and the network entry process based on the terminal device can be omitted, such as synchronization, random access and the like. The core network control function shared among different network slices can also be shared, for example, user authentication is not required to be performed again when the terminal device switches among different network slices.

In addition, in another implementation, the signaling interaction procedure of the radio access network device in the source network slice may also be performed by the core network user plane device in the source network slice. Accordingly, the signaling interaction process of the radio access network device in the target network slice may also be performed by the core network user plane device in the target network slice. Specifically, for step S301: and the core network user plane equipment in the source network slice sends the information of the network state of the source network slice to the core network management equipment. The processing flow of the core network user plane device in the source network slice is similar to the processing flow of the radio access network device in the source network slice in the embodiment shown in fig. 3, and details are not repeated here.

Fig. 4 is a signaling interaction diagram of a second embodiment of a network slice control method provided in the present patent application. This embodiment may be applied in the network architecture shown in fig. 2. In the embodiment of the present invention, the source network slice is a network slice to which the terminal device has access, and the target network slice is a network slice to which the terminal device is switched. The source network slice and the target network slice both comprise core network control plane equipment and core network user plane equipment. The embodiment of the invention can be applied to the first scene and the second scene. As shown in fig. 4, the network slice control method provided in the embodiment of the present invention includes the following steps:

S401: and the core network control plane equipment of the source network slice sends the information of the network state of the source network slice to the core network management equipment. And the core network management equipment receives the information of the network state of the source network slice, which is sent by the core network control plane equipment of the source network slice.

S402: the core network management device determines whether the network state of the source network slice meets a first preset condition, and if so, executes step S403.

S403: and the core network management equipment controls the terminal equipment to be switched from the source network slice to the target network slice.

Specifically, the step of the core network management device controlling the terminal device to switch from the source network slice to the target network slice includes the following steps S4031 to S4038, and the detailed description of each step is as follows:

s4031: and the core network management equipment performs target network slice access authorization on the terminal equipment.

S4032: and the core network management equipment sends a first slice control request to the terminal equipment through the core network control plane equipment of the source network slice. The terminal equipment receives a first slice control request sent by the core network management equipment through the core network control plane equipment of the source network slice.

S4033: and the terminal equipment determines to switch from the source network slice to the target network slice according to the first slice control request.

S4034: and the core network management device sends a second slice control request to the core network control plane device of the target network slice, and the core network control plane device of the target network slice receives the second slice control request sent by the core network management device.

S4035: and the target network slice establishes a bearer for the terminal equipment according to the second slice control request.

S4036: after the target network slice establishes a bearer for the terminal device, the core network control plane device of the target network slice sends a bearer establishment completion confirmation message to the core network management device, and the core network management device receives the bearer establishment completion confirmation message sent by the core network control plane device of the target network slice.

S4037: and the core network management device sends a third slice control request to the core network control plane device of the source network slice, and the core network control plane device of the source network slice receives the third slice control request sent by the core network management device.

S4038: and the source network slice removes the load established for the terminal equipment according to the third slice control request.

S4039: and the core network control plane equipment of the source network slice sends a slice switching success message to the core network management equipment. And the core network management equipment receives a slice switching success message sent by the core network control plane equipment of the source network slice.

Optionally, after step S4033, step S40310 may further be included: and the terminal equipment sends a slice control response message to the core network management equipment through the core network control plane equipment of the source network slice. And the core network management equipment receives a slice control response message sent by the terminal equipment through the core network control plane equipment of the source network slice. The slice control response message is used for indicating the terminal equipment to accept the slice switching operation. The core network management device will trigger the step S4034 after receiving the slice control response message.

Optionally, if the first slice control request further includes configuration indication information corresponding to the target network slice, after step S4033, the method further includes step S40311: and the terminal equipment performs protocol configuration according to the configuration indication information corresponding to the target network slice so as to access the target network slice. The order of execution of steps S40310 and S40311 is not limited.

The implementation processes of steps S401 to S403 and S4031 to S40311 in the embodiment of the present invention are similar to the implementation processes of steps S301 to S303 and S3031 to S30311 in the first embodiment shown in fig. 3, and are not described again here. The different points are mainly reflected in that: in this embodiment, the network state information of the source network slice includes network state information of a core network control plane device of the source network slice and/or network state information of a core network user plane device of the source network slice. For step S4032, the core network management device sends the first slice control request to the core network control plane device in the source network slice. And the core network control plane equipment in the source network slice sends the first slice control request to the radio access network equipment, and the radio access network equipment sends the first slice control request to the terminal equipment.

In addition, the step of the target network slice establishing the bearer for the terminal device according to the second slice control request specifically includes: the method comprises the steps of establishing a control plane bearer from a terminal device to an access network device, a control plane bearer from the access network device to a core network control plane device, and a control plane bearer from the core network control plane device to a network slice manager, and establishing a user plane bearer from the terminal device to the access network device and a user plane bearer from the access network device to the core network user plane device. The source network slice specifically includes, according to the third slice control request, removing the bearer established for the terminal device: and removing the control plane bearer from the terminal equipment to the access network equipment, the control plane bearer from the access network equipment to the core network control plane equipment and the control plane bearer from the core network control plane equipment to the network slice manager. And removing the user plane bearer from the terminal equipment to the access network equipment and the user plane bearer from the access network equipment to the core network user plane equipment.

Other processes are similar to the embodiments and are not described herein.

In the network slice control method provided by the embodiment of the present invention, a terminal device accesses a source network slice, a core network control plane device of the source network slice sends information of a network state to a core network management device, and the core network management device receives the information of the network state sent by the core network control plane device of the source network slice. If the network state of the source network slice meets a first preset condition, the core network management equipment controls the terminal equipment which has access to the source network slice to be switched to the target network slice from the source network slice, so that the network load of the source network slice is reduced, and the network resource optimization of the source network slice is realized.

Fig. 5 is a signaling interaction diagram of a third embodiment of a network slice control method provided in the present patent application, where the third embodiment can be applied to the network architecture shown in fig. 1. In the embodiment of the invention, the source network slice is the network slice accessed by the terminal equipment, and the target network slice is the network slice failed to be accessed by the terminal equipment. The source network slice and the target network slice both include radio access network equipment and core network user plane equipment. The embodiment of the invention can be applied to scene three: the core network management device initiates the terminal device to access to the target network slice at the same time in order to meet the requirements of the terminal device for carrying out other types of services after a period of time. As shown in fig. 5, the network slice control method provided in the embodiment of the present invention includes the following steps:

s501: the wireless access network equipment of the target network slice sends the information of the network state of the target network slice to the core network management equipment, and the core network management equipment receives the information of the network state of the target network slice sent by the wireless access network equipment of the target network slice.

The network state information of the target network slice may include network state information of a radio access network device of the target network slice, the network state information of the target network slice may include information of a network state of a core network user plane device in the target network slice, and the network state information of the target network slice may include both the information of the network state of the radio access network device in the target network slice and the information of the network state of the core network user plane device in the target network slice. The information of the network status may include a remaining value or a load value of the network resource, for example, the information of the network status is a ratio of the current available resource to the total available resource of the network slice or a ratio of the current network load to the maximum capacity of the network. The information of the network status may also include the network status, e.g. the network resources are sufficient or the load is small.

S502: the core network management device judges whether the network state of the target network slice meets a third preset condition, if so, the step S503 is executed.

Wherein the third preset condition comprises: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value. For example, the fifth preset threshold is: 90 percent. The sixth preset threshold is: 10 percent. Alternatively, the third preset condition may also be: the network state is that the network resources are sufficient or the load is small.

S503: and the core network management equipment controls the terminal equipment to access the target network slice.

Specifically, the step of the core network management device controlling the terminal device to access the target network slice includes the following steps S5031 to S5036, and the detailed description of each step is as follows:

s5031: and the core network management equipment performs target network slice access authorization on the terminal equipment.

Specifically, the core network management device obtains an identifier of the terminal device from the pre-recorded information, for example, the identifier of the terminal device may be an IMSI or the like. And the core network management equipment acquires the subscription information corresponding to the identifier of the terminal equipment from the home subscriber server or the policy and charging rule function equipment according to the identifier of the terminal equipment. And if the core network management equipment determines that the terminal equipment allows the core network management equipment to carry out network slice access control on the terminal equipment according to the subscription information, the core network management equipment carries out target network slice access authorization on the terminal equipment. The subscription information here may include indication information of whether the terminal device subscribes at the time of network entry to allow the core network management device to initiate slice access. Optionally, the subscription information may further include QoS information of the user, and the QoS information may include: one or more of latency, false alarm rate, data transmission rate, bandwidth, service priority.

When the core network management device determines that the terminal device allows the core network management device to perform network slice access control on the terminal device according to the subscription information, the core network management device can judge in the following way: if the subscription information of the terminal equipment comprises indication information for indicating to receive the slice access initiated by the core network management equipment, the core network management equipment determines that the terminal equipment allows the core network management equipment to carry out network slice access control on the terminal equipment. Of course, the core network management device may also determine in other manners, which is not limited in this embodiment.

When the core network management device determines that the terminal device allows the core network management device to perform network slice access control on the terminal device according to the subscription information, the core network management device may further consider QoS information of the terminal device, which is described by taking bandwidth in the QoS information as an example, if the subscription information of the terminal device includes indication information for indicating that slice access initiated by the core network management device is accepted and the bandwidth in the subscription information can satisfy a service corresponding to a target network slice, the core network management device determines that the terminal device allows the core network management device to perform network slice access control on the terminal device.

S5032: and the core network management equipment sends a fourth slice control request to the terminal equipment through the wireless access network equipment of the source network slice, and the terminal equipment receives the fourth slice control request sent by the core network management equipment through the wireless access network equipment of the source network slice.

And the fourth slice control request comprises the identification of the target network slice and the configuration indication information corresponding to the target network slice. The identification of the target network slice is used for the terminal device to confirm which network slice is newly accessed.

Optionally, the fourth slice control request may further carry an identifier of a request type, so as to indicate what type the fourth slice control request is. In the embodiment of the present invention, the request type identifier carried by the fourth slice control request is a slice access type identifier.

S5033: and the terminal equipment determines to access the target network slice according to the fourth slice control request, and performs protocol configuration according to configuration indication information corresponding to the target network slice to access the target network slice.

The configuration indication information corresponding to the target network slice may be protocol configuration information corresponding to the target network slice, including which protocol layers need to be configured, which functions need to be configured by each protocol layer, and the like. And the terminal equipment performs corresponding configuration according to the protocol configuration information corresponding to the target network slice. Or, the configuration indication information corresponding to the target network slice may also be an identifier of the target network slice. The terminal equipment locally stores protocol configuration information corresponding to the identification of different network slices, and searches the protocol configuration information corresponding to the identification of the target network slice according to the identification of the target network slice sent by the core network management equipment, and performs corresponding configuration according to the protocol configuration information. Or, the configuration indication information corresponding to the target network slice may also be a service type corresponding to the target network slice. The terminal equipment locally stores protocol configuration information of network slices with different service types, searches protocol configuration information corresponding to the service type of the target network slice according to the service type of the target network slice sent by the core network management equipment, and performs corresponding configuration according to the protocol configuration information.

S5034: and the core network management equipment sends a fifth slice control request to the wireless access network equipment of the target network slice, and the wireless access network equipment of the target network slice receives the fifth slice control request sent by the core network management equipment.

The fifth slice control request comprises an identifier of the terminal device, and the fifth slice control request is used for indicating the target network slice to establish a bearer for the terminal device.

Optionally, the fifth slice control request may further carry an identifier of a request type, so as to indicate what type the fifth slice control request is. In the embodiment of the present invention, the request type identifier carried by the fifth slice control request is a slice access type identifier.

S5035: and the target network slice establishes a bearer for the terminal equipment according to the fifth slice control request.

S5036: and the wireless access network equipment of the target network slice sends a bearing establishment completion confirmation message to the core network management equipment. And the core network management equipment receives a bearer establishment completion confirmation message sent by the wireless access network equipment of the target network slice.

It should be noted that, the terminal device requests to access to the target network slice in advance, but the access of the terminal device fails due to insufficient network resources or a large load of the target network slice, and the core network management device records the request of access failure, where the recorded information includes: the identifier of the terminal device, the identifier of the target network slice requested to be accessed by the terminal device, and the like. In order to obtain the state information of the target network slice in time, the target network slice triggers periodically or in an event to send the network state information to the core network management equipment, and the core network management equipment obtains the network state of the target network slice according to the network state information sent by the target network slice. If the network state of the target network slice meets a third preset condition within a preset time period, the core network management device triggers the terminal device to be simultaneously accessed into the target network slice, and if the network state of the target network slice does not meet the third preset condition after the preset time period is exceeded, the core network management device does not trigger the terminal device to be simultaneously accessed into the target network slice. Wherein, the preset time period is, for example: and (5) 30 minutes.

Optionally, after step S5033, step S5037 may be further included: and the terminal equipment sends a slice control response message to the core network management equipment through the wireless access network equipment of the source network slice. And the core network management equipment receives a slice control response message sent by the terminal equipment through the wireless access network equipment of the source network slice. The slice control response message is used for indicating the terminal equipment to accept the slice access operation. The core network management device triggers the step S5034 to be executed after receiving the slice control response message.

It should be noted that the execution sequence of step S5032 and step S5034 in this embodiment is not specifically limited.

The difference between the embodiment of the present invention and the first embodiment shown in fig. 3 is that: the terminal equipment is simultaneously accessed into the two network slices, and the terminal equipment is simultaneously accessed into the target network slice on the premise of being accessed into the source network slice, namely, the terminal equipment is allowed to simultaneously carry out two types of services.

For example, the terminal device has already accessed an eMBB network slice to perform a video service, and at this time, if the terminal device needs to perform a service of connecting the reading number of the smart meter, the eMBB network slice does not support the service of reading the reading number of the smart meter. The terminal equipment initiates an access request for accessing to a network slice which can operate and read the electricity degree on the intelligent electric meter, and at the moment, the requirement of connecting one more terminal equipment cannot be met due to the fact that the network slice which can operate and read the electricity degree on the intelligent electric meter has large load and small network resource residual value. The core network management equipment rejects the access request of the terminal equipment, and when the network slice capable of operating and reading the electricity degree on the intelligent electric meter is released by a user and the resources are sufficient, the core network management equipment accesses the terminal equipment which is requested to be accessed into the network slice to the network slice so as to meet the service requirement that the terminal equipment operates and reads the electricity degree on the intelligent electric meter.

In the network slice control method provided by the embodiment of the invention, the target network slice with failed terminal equipment access sends the network state information to the core network management equipment, and the core network management equipment receives the network state information sent by the target network slice. If the information of the network state of the target network slice meets the third preset condition, the core network management device controls the terminal device which has access to the source network slice to access the target network slice at the same time, so that the requirement that the terminal device can operate the service corresponding to the target network slice when operating the service of the source network slice is met.

In addition, in another implementation, the signaling interaction procedure of the radio access network device in the target network slice may also be performed by the core network user plane device in the target network slice. Specifically, for step S501: and the core network user plane equipment in the target network slice sends the information of the network state of the target network slice to the core network management equipment. The processing flow of the core network user plane device in the target network slice is similar to the processing flow of the radio access network device of the target network slice in the embodiment shown in fig. 5, and details are not repeated here.

Fig. 6 is a signaling interaction diagram of a fourth embodiment of a network slice control method provided in the present patent application. This embodiment may be applied in the network architecture shown in fig. 2. In the embodiment of the invention, the source network slice is the network slice accessed by the terminal equipment, and the target network slice is the network slice failed to be accessed by the terminal equipment. The source network slice and the target network slice both comprise core network control plane equipment and core network user plane equipment. The embodiment of the invention can be applied to the third scene. As shown in fig. 6, the network slice control method provided in the embodiment of the present invention includes the following steps:

s601: the core network control plane device of the target network slice sends the information of the network state of the target network slice to the core network management device, and the core network management device receives the information of the network state of the target network slice sent by the core network control plane device of the target network slice.

S602: the core network management device determines whether the network state of the target network slice meets a third preset condition, and if so, executes step S603.

S603: and the core network management equipment controls the terminal equipment to access the target network slice.

Specifically, the step of the core network management device controlling the terminal device to access the target network slice includes the following steps S6031-S6036, and the detailed description of each step is as follows:

S6031: and the core network management equipment performs target network slice access authorization on the terminal equipment.

S6032: and the core network management device sends a fourth slice control request to the terminal device through the sliced core network control plane device of the source network, and the terminal device receives the fourth slice control request sent by the core network management device through the sliced core network control plane device of the source network.

S6033: and the terminal equipment determines to access the target network slice according to the fourth slice control request, and performs protocol configuration according to configuration indication information corresponding to the target network slice to access the target network slice.

S6034: and the core network management device sends a fifth slice control request to the core network control plane device of the target network slice, and the core network control plane device of the target network slice receives the fifth slice control request sent by the core network management device.

S6035: and the target network slice establishes a bearer for the terminal equipment according to the fifth slice control request.

S6036: and the core network control plane equipment of the target network slice sends a message for confirming the completion of the bearer establishment to the core network management equipment. And the core network management equipment receives a bearer establishment completion confirmation message sent by the core network control plane equipment of the target network slice.

Optionally, after step S6033, step S6037 may be further included: and the terminal equipment sends a slice control response message to the core network management equipment through the core network control plane equipment of the source network slice. And the core network management equipment receives a slice control response message sent by the terminal equipment through the core network control plane equipment of the source network slice. The slice control response message is used for indicating the terminal equipment to accept the slice access operation. The core network management device will trigger the step S6034 after receiving the slice control response message.

It should be noted that the execution sequence of step S6032 and step S6034 in this embodiment is not particularly limited.

The implementation processes of steps S601-S603 and S6031-S6037 in the embodiment of the present invention are similar to the implementation processes of steps S501-S503 and S5031-S5037 in the third embodiment shown in fig. 5, and are not described again here. The different points are mainly reflected in that: the information of the network state of the target network slice includes the network state information of the core network control plane device in the target network slice and/or the information of the network state of the core network user plane device in the target network slice. For step S6032, the core network management device sends the fourth slice control request to the core network control plane device in the source network slice. And the core network control plane device in the source network slice sends the fourth slice control request to the radio access network device, and the radio access network device sends the fourth slice control request to the terminal device.

According to the network slice control method provided by the embodiment of the invention, the terminal equipment is accessed into the source network slice, the target network slice with the access failure of the terminal equipment sends the information of the first network state to the core network management equipment, and the core network management equipment receives the information of the network state sent by the target network slice. If the information of the network state meets the third preset condition, the core network management device controls the terminal device which has access to the source network slice to simultaneously access to the target network slice, so that the requirement that the terminal device can operate the service corresponding to the target network slice when operating the service of the source network slice is met.

It should be noted that fig. 3 to fig. 6 are four embodiments that are described separately, and in practical applications, any two or more of the four embodiments may also be combined. For example, for the network architecture shown in fig. 1, the radio access network device of the source network slice to which the terminal device has access sends information of its own network state to the core network management device. And the core network management equipment receives the information of the network state sent by the wireless access network equipment of the source network slice. The core network management equipment judges whether the network state of the source network slice meets a first preset condition or a third preset condition, and if the network state of the source network slice meets the first preset condition, the core network management equipment controls the terminal equipment to be switched from the source network slice to the target network slice. And if the third preset condition is met, the core network management equipment controls the terminal equipment which is requested to be accessed to the source network slice in advance but fails to be accessed to the source network slice.

Fig. 7 is a signaling interaction diagram of a fifth embodiment of a network slice control method provided in the present patent application. The process of the terminal device initially accessing the source network slice is described. This embodiment may be applied in the network architecture shown in fig. 1. The process includes steps S701 to S707, and detailed description of each step is as follows.

S701: the terminal equipment sends a slice access request to the core network management equipment through the wireless access network equipment of the source network slice, and the core network management equipment receives the slice access request sent by the terminal equipment through the wireless access network equipment of the source network slice.

The slice access request includes an identification of the source network slice. Optionally, the slice access request further includes an identifier of the terminal device.

S702: and the core network management equipment performs source network slice access authorization corresponding to the source network slice identifier on the terminal equipment according to the slice access request.

The core network management equipment acquires the identifier of the terminal equipment from the slice access request, acquires the subscription information corresponding to the identifier of the terminal equipment from the attribution subscriber server or the policy and charging rule function equipment according to the identifier of the terminal equipment, and if the core network management equipment determines that the terminal equipment can be accessed to the source network slice according to the subscription information and the identifier of the source network slice, the core network management equipment performs source network slice access authorization corresponding to the identifier of the source network slice on the terminal equipment. The success rate of the terminal equipment when accessing the source network slice is improved through the access authorization.

When the core network management device determines that the terminal device can access the source network slice according to the subscription information and the identifier of the source network slice, the core network management device can judge in the following way: and if the subscription information of the terminal equipment comprises the service corresponding to the source network slice, the core network management equipment determines that the terminal equipment can be accessed to the source network slice. Of course, the core network management device may also perform the determination in other manners, for example, when the bandwidth of the subscription information may satisfy the service corresponding to the source network slice, the core network management device determines that the terminal device can access the source network slice. The present embodiment does not limit this.

S703: and the core network management equipment sends the configuration indication information corresponding to the source network slice to the terminal equipment through the wireless access network equipment of the source network slice. And the terminal equipment receives configuration indication information corresponding to the source network slice, which is sent by the core network management equipment through the wireless access network equipment of the source network slice.

The configuration indication information corresponding to the source network slice may be protocol configuration information corresponding to the source network slice, an identifier of the source network slice, or a service type corresponding to the source network slice.

S704: and the terminal equipment carries out protocol configuration according to the configuration indication information corresponding to the source network slice so as to access the source network slice.

The configuration indication information corresponding to the source network slice may be protocol configuration information related to the source network slice, including which protocol layers need to be configured, which functions need to be configured by each protocol layer, and the like. And the terminal equipment performs corresponding protocol configuration according to the protocol configuration information. Alternatively, the configuration indication information corresponding to the source network slice may also be an identifier of the source network slice. The terminal equipment locally stores protocol configuration information corresponding to the identification of different network slices, and searches the protocol configuration information corresponding to the identification of the source network slice according to the identification of the source network slice sent by the core network management equipment, and performs corresponding protocol configuration according to the protocol configuration information. Or, the configuration indication information corresponding to the source network slice may also be a service type corresponding to the source network slice. The terminal equipment locally stores protocol configuration information corresponding to network slices of different service types, and searches protocol configuration information corresponding to the service type of a source network slice according to the service type of the source network slice sent by the core network management equipment, and performs corresponding protocol configuration according to the protocol configuration information. It should be noted that different types of services carried by different network slices need to adopt different protocol configuration modes.

S705: and the core network management equipment sends a sixth slice control request to the wireless access network equipment of the source network slice, and the wireless access network equipment of the source network slice receives the sixth slice control request sent by the core network management equipment.

The sixth slice control request includes an identification of the terminal device. Optionally, the sixth slice control request may further carry an identifier of a request type, so as to indicate what type the sixth slice control request is. In the embodiment of the present invention, the request type identifier carried by the sixth slice control request is an access type identifier.

S706: and the source network slice establishes a bearer for the terminal equipment according to the sixth slice control request.

Specifically, the source network slice establishes a control plane bearer from the terminal device to the radio access network device of the source network slice, establishes a control plane bearer from the radio access network device of the source network slice to the core network management device, establishes a user plane bearer from the terminal device to the radio access network device of the source network slice, and establishes a user plane bearer from the radio access network device of the source network slice to the core network user plane device of the source network slice.

S707: after the source network slice establishes a bearer for the terminal device, the radio access network device of the source network slice sends a bearer establishment completion confirmation message to the core network management device, and the core network management device receives the bearer establishment completion confirmation message sent by the radio access network device of the source network slice.

The bearer establishment completion confirmation message is used to indicate that the source network slice has established a bearer for the terminal device, and may also carry an identifier of the terminal device. At this point, the terminal device successfully accesses the source network slice.

The execution sequence of steps S703 and S705 is not particularly limited.

For the network architecture shown in fig. 2, the process of initially accessing the source network slice by the terminal device is substantially the same as the process of the embodiment shown in fig. 7, and the difference is mainly reflected in: the related operation of the radio access network device corresponding to the source network slice is completed by the core network control plane device of the source network slice. For example, for a node other than S701, the terminal device sends a slice access request to the core network management device through the core network control plane device of the source network slice, and the core network management device receives the slice access request sent by the terminal device through the core network control plane device of the source network slice. Specifically, the terminal device sends a slice access request to the radio access network device, the radio access network device receives the slice access request sent by the terminal device, sends the slice access request to the core network control plane device of the source network slice, and the core network control plane device of the source network slice sends the slice access request to the core network management device. And the core network management equipment receives a slice access request sent by the core network control plane equipment of the source network slice.

Fig. 8 is a signaling interaction diagram of a sixth embodiment of a network slice processing method provided in the present patent application. As shown in fig. 8, the network slice control method provided in the embodiment of the present invention is described in detail with respect to a situation that a slice manager and a protocol configuration device in a core network management device are separately configured on the basis of the first embodiment shown in fig. 3:

s801: the slice manager judges whether the network state of the source network slice meets a first preset condition, if so, step S802 is executed.

The implementation principle of step S801 is similar to that of step S302, and is not described here again.

S802: the slice manager sends a signing information acquisition request to a home subscriber server/policy and charging rule function device. And the attributive subscriber server/the strategy and charging rule function equipment receives the signing information acquisition request sent by the slice manager.

The subscription information acquisition request comprises the identifier of the terminal equipment. The subscription information acquisition request is used for indicating to acquire the subscription information of the terminal device.

S803: and the attributive subscriber server/the strategy and charging rule function device sends the signing information corresponding to the identifier of the terminal device to the slice manager according to the signing information acquisition request. And the slice manager receives the subscription information of the terminal equipment, which is sent by the attribution subscriber server/the strategy and charging rule function equipment.

S804: and if the slice manager determines that the terminal equipment allows the slice manager to perform network slice switching control on the terminal equipment according to the subscription information, the slice manager performs target network slice access authorization on the terminal equipment.

Here, the process of executing the target network slice access authorization on the terminal device by the slice manager may refer to the description in step S3031, and is not described herein again.

S805: the slice manager sends a protocol configuration information acquisition request to the protocol configuration device. The protocol configuration equipment receives a protocol configuration information acquisition request sent by the slice manager.

Wherein, the protocol configuration information acquisition request carries the identifier of the target network slice. The protocol configuration information acquisition request is used for requesting to acquire the protocol configuration information of the target network slice.

S806: and the protocol configuration equipment searches the protocol configuration information corresponding to the target network slice according to the protocol configuration information acquisition request.

Specifically, the protocol configuration information includes protocol stack configuration information corresponding to the target network slice that the terminal device needs to adopt.

The protocol configuration device stores the identifier of the network slice and the protocol configuration information corresponding to the identifier of the network slice. And the protocol configuration equipment determines the protocol configuration information corresponding to the target network slice according to the identification of the target network slice in the protocol configuration information acquisition request.

S807: the protocol configuration device sends the protocol configuration information to the slice manager, and the slice manager receives the protocol configuration information sent by the protocol configuration device.

And then, the slice manager sends the protocol configuration information to the terminal equipment, and the terminal equipment receives the protocol configuration information. Specifically, the slice manager may send the protocol configuration information to the terminal device through the mobility management device and the radio access network device of the source network slice. And the terminal equipment carries out protocol configuration according to the protocol configuration information so as to access the target network slice.

The difference between the network slice control method provided by the embodiment of the present invention and the network slice control method shown in fig. 3 is that: the slice manager and the protocol configuration device in the core network management device in the embodiment of the invention are separately arranged, when the protocol configuration information corresponding to the target network slice is determined, if the slice manager performs target network slice access authorization on the terminal device, the slice manager sends a protocol configuration information acquisition request to the protocol configuration device, the protocol configuration device determines the protocol configuration information of the target network slice according to the protocol configuration information acquisition request, and the slice manager receives the protocol configuration information sent by the protocol configuration device and sends the protocol configuration information to the terminal device. The slice manager and the protocol configuration device in the core network management device in the embodiment of the invention provided in fig. 3 are integrated together, so that the protocol configuration information corresponding to the target network slice can be directly determined.

In the network slice control method provided by the embodiment of the invention, the terminal equipment is accessed into the source network slice, the source network slice sends the information of the network state to the slice manager, and the slice manager receives the information of the network state sent by the source network slice. If the network state of the source network slice meets a first preset condition, the slice manager performs access authorization on the target network slice to the terminal device, the slice manager sends a protocol configuration information acquisition request to the protocol configuration device, the protocol configuration device determines protocol configuration information corresponding to the target network slice according to the protocol configuration information acquisition request, the protocol configuration device sends the protocol configuration information corresponding to the target network slice to the slice manager, and the slice manager receives the protocol configuration information corresponding to the target network slice. And the slice manager sends protocol configuration information corresponding to the target network slice to the terminal equipment, and the terminal equipment carries out protocol configuration according to the protocol configuration information so as to access the target network slice. And the slice manager informs the target network slice to establish a bearer for the terminal equipment. And then, the slice manager informs the source network slice to remove the load established for the terminal equipment, thereby reducing the network load of the source network slice and realizing the resource optimization of the source network slice.

It should be noted that the above embodiments shown in fig. 4 to fig. 6 are all descriptions in which a slice manager and a protocol configuration device in a core network management device are integrated together and are set as an example, and similarly, the slice manager and the protocol configuration device in the core network management device in the embodiments shown in fig. 4 to fig. 6 may also be separately set, and an interaction process between the slice manager and the protocol configuration device during separate setting may refer to the embodiment of fig. 8, which is not described herein again.

In order to better implement the network slice control method of the embodiment of the invention, the invention also provides related equipment for implementing the method.

Fig. 9 is a schematic structural diagram of a core network management device provided in this patent application. As shown in fig. 9, the core network management apparatus 90 includes a processor 901, a memory 902, and a transceiver 903. Wherein the processor 901, memory 902, and transceiver 903 may be connected by a bus or other means.

Optionally, the core network management device 90 may further include a network interface 904 and a power module 905.

The processor 901 may be a Digital Signal Processing (DSP) chip.

The Memory 902 is used for storing instructions, and in a specific implementation, the Memory 902 may be a Read-Only Memory (ROM) or a Random Access Memory (RAM), and in an embodiment of the present invention, the Memory 902 is used for storing network slice control program codes, and the first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, the fifth preset threshold, the sixth preset threshold, and the like described in the foregoing embodiments.

The transceiver 903 is used for transmitting and receiving signals.

The network interface 904 is used for the core network management device 90 to perform data communication with other devices. The network interface 904 may be a wired interface or a wireless interface.

The power supply module 905 is used for supplying power to each module of the core network management device 90.

In a first aspect of the present application, the processor 901 is configured to perform the following operations:

the information of the network state sent by the source network slice is received by the transceiver 903, and the source network slice is the network slice that the terminal device has accessed. If the network status of the source network slice meets the first preset condition, the processor 901 controls the terminal device to switch from the source network slice to the target network slice.

Specifically, the processor 901 controls the terminal device to switch from the source network slice to the target network slice, including: processor 901 performs target network slice access authorization for the terminal device. The processor 901 sends a first slice control request to the terminal device via the transceiver 903. The first slice control request comprises an identification of the target network slice, and the identification of the target network slice is used for instructing the terminal device to determine to switch from the source network slice to the target network slice according to the identification of the target network slice.

Optionally, the first slice control request further includes configuration indication information corresponding to the target network slice, where the configuration indication information is used to indicate the terminal device to perform protocol configuration according to the configuration indication information to access the target network slice.

Specifically, after the processor 901 performs target network slice access authorization on the terminal device, the processor 901 is further configured to: a second slice control request including an identification of the terminal device is sent to the target network slice through the transceiver 903. And the second slice control request is used for indicating the target network slice to establish a bearer for the terminal equipment corresponding to the identifier of the terminal equipment. When processor 901 determines that the target network slice has established a bearer for the terminal device, a third slice control request including an identification of the terminal device is sent to the source network slice through transceiver 903. And the third slice control request is used for indicating the source network slice to remove the bearer established for the terminal equipment corresponding to the identifier of the terminal equipment.

Optionally, the processor 901 performs target network slice access authorization on the terminal device, including: the processor 901 obtains the identifier of the terminal device from the identifier set of the terminal device that has accessed the source network slice, and obtains the subscription information corresponding to the identifier of the terminal device from the home subscriber server or the policy and charging rule function device according to the identifier of the terminal device. If the processor 901 determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the processor 901 performs default network slice access authorization on the terminal device.

Optionally, the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value.

Optionally, the target network slice is a default network slice or a network slice satisfying a second preset condition. Here, the default network slice is a network slice determined when the terminal device signs a contract and can satisfy the most basic service requirement of the terminal device.

Optionally, the second preset condition includes: the network resource residual value is greater than or equal to a third preset threshold value or the load value is less than or equal to a fourth preset threshold value.

Optionally, the information of the network state sent by the source network slice includes an identifier of the terminal device. The processor 901 performs target network slice access authorization on the terminal device, including: the processor 901 obtains the identifier of the terminal device from the network state information, and obtains the subscription information corresponding to the identifier of the terminal device from the home subscriber server or the policy and charging rule function device according to the identifier of the terminal device. If the processor 901 determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the processor 901 performs target network slice access authorization on the terminal device.

Optionally, the information of the network state sent by the source network slice includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by the source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by the target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

Specifically, the processor 901 receives, through the transceiver 903, the information of the network state sent by the source network slice, specifically: the processor 901 receives, through the transceiver 903, information of a network state sent by the radio access network device, the core network user plane device, or the core network control plane device, where the radio access network device, the core network user plane device, or the core network control plane device is a device in the source network slice.

It should be noted that, for the functions of each functional device in the core network management device 90 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network management device in the embodiment shown in fig. 3 or fig. 4, which is not described herein again.

In the second solution of the present application, the processor 901 is configured to call the program and data stored in the memory 902, and perform the following operations: the transceiver 903 is used to receive the network state information sent by the target network slice, where the target network slice is a network slice in which the terminal device fails to access, and the terminal device has access to the source network slice. If the network status of the target network slice meets the third preset condition, the processor 901 controls the terminal device to access the target network slice.

Specifically, the processor 901 controls the terminal device to access the target network slice, including: processor 901 performs target network slice access authorization for the terminal device. Processor 901 sends a fourth slice control request to the terminal device through transceiver 903, where the fourth slice control request includes configuration indication information corresponding to the target network slice. And the configuration indication information corresponding to the target network slice is used for indicating the terminal equipment to carry out protocol configuration according to the configuration indication information so as to access the target network slice.

Specifically, after the processor 901 performs target network slice access authorization on the terminal device, the processor 901 is further configured to: a fifth slice control request including an identification of the terminal device is sent to the target network slice through the transceiver 903. And the fifth slice control request is used for indicating the target network slice to establish a bearer for the terminal equipment corresponding to the identifier of the terminal equipment.

Optionally, the processor 901 performs target network slice access authorization on the terminal device, including: the processor 901 obtains the identifier of the terminal device from the pre-recorded identifier set of the terminal device, and obtains the subscription information corresponding to the identifier of the terminal device from the home subscriber server or the policy and charging rule function device according to the identifier of the terminal device. If the processor 901 determines that the terminal device allows the core network management device to perform network slice access control on the terminal device according to the subscription information, the processor 901 performs target network slice access authorization on the terminal device.

Optionally, the third preset condition includes: the network resource residual value is greater than or equal to a fifth preset threshold value or the load value is less than or equal to a sixth preset threshold value.

Specifically, the processor 901 receives, through the transceiver 903, the information of the network state sent by the target network slice, specifically: the processor 901 receives, through the transceiver 903, information of a network state sent by the radio access network device, the core network user plane device, or the core network control plane device, where the radio access network device, the core network user plane device, or the core network control plane device is a device in the target network slice.

It should be noted that, for the functions of each functional module in the core network management device 90 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network management device in the embodiment shown in fig. 5 or fig. 6, which is not described herein again.

Referring to fig. 10, a schematic structural diagram of a radio access network device provided in this patent application is shown. As shown in fig. 10, the radio access network apparatus 100 includes a processor 1001, a memory 1002, and a transceiver 1003. Wherein the processor 1001, the memory 1002, and the transceiver 1003 may be connected by a bus or other means.

Optionally, network slice 100 may also include a network interface 1004 and a power module 1005.

The processor 1001 may be a DSP chip, among others.

The memory 1002 is used for storing instructions, and in particular implementation, the memory 1002 may be a ROM or a RAM, and in the embodiment of the present invention, the memory 1002 is used for storing network slice control program codes.

The transceiver 1003 is used for transmitting and receiving signals.

The network interface 1004 is used for the radio access network device 100 to communicate data with other devices. The network interface 1004 may be a wired interface or a wireless interface.

Power module 1005 is used to power the various modules of network slice 100.

In a first aspect of the present application, the radio access network device 100 is a radio access network device in a source network slice that the terminal device has access to. The processor 1001 is configured to perform the following operations:

the information of the network status of the source network slice is sent to the core network management device through the transceiver 1003. If the network status of the source network slice meets the first preset condition, the processor 1001 receives a second slice control request sent by the core network management device through the transceiver 1003. The second slice control request includes the identifier of the terminal device. The processor 1001 tears down the bearer established for the terminal device according to the second slice control request.

Optionally, the information of the network state sent by the source network slice includes an identifier of the terminal device, where the identifier of the terminal device is used to instruct the core network management device to obtain, according to the identifier of the terminal device, subscription information corresponding to the identifier of the terminal device from the home subscriber server or the policy and charging rule function device, and if the core network management device determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the core network management device performs target network slice access authorization on the terminal device.

Optionally, the target network slice is a default network slice or a network slice satisfying a second preset condition.

Optionally, the information of the network state sent by the processor 1001 through the transceiver 1003 includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by the source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by the target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

It should be noted that, for the functions of each functional module in the radio access network device 100 described in the embodiment of the present invention, reference may be made to the related description of the corresponding radio access network device in the embodiment shown in fig. 3, which is not described herein again.

In a second aspect of the present application, the radio access network device 100 is a radio access network device in a target network slice where the terminal device fails to access, and the terminal device has access to a source network slice. The processor 1001 is used for calling programs and data stored in the memory 1002, and performs the following operations: the information of the network status of the target network slice is sent to the core network management device through the transceiver 1003. If the network state of the target network slice meets the third preset condition, the processor 1001 receives a fifth slice control request sent by the core network management device through the transceiver 1003, where the fifth slice control request includes an identifier of the terminal device. The processor 1001 establishes a bearer for the terminal device according to the fifth slice control request.

It should be noted that, for the functions of each functional module in the radio access network device 100 described in the embodiment of the present invention, reference may be made to the related description of the corresponding radio access network device in the embodiment shown in fig. 5, which is not described herein again.

Fig. 11 is a schematic structural diagram of a core network user plane device provided in this patent application. As shown in fig. 11, the core network user plane device 110 includes a processor 1101, a memory 1102 and a transceiver 1103. Wherein the processor 1101, memory 1102 and transceiver 1103 can be connected by a bus or other means.

Optionally, the network slice 110 may further include a network interface 1104 and a power module 1105.

The processor 1101 may be a DSP chip, among others.

The memory 1102 is used for storing instructions, and in particular implementation, the memory 1102 may be a ROM or a RAM, and in an embodiment of the present invention, the memory 1102 is used for storing network slice control program codes.

The transceiver 1103 is used for transmitting and receiving signals.

The network interface 1104 is used for the core network user plane device 110 to communicate data with other devices. The network interface 1104 may be a wired interface or a wireless interface.

The power module 1105 is used to provide power to the various modules of the network slice 110.

In a first aspect of the present application, the core network user plane device 110 is a core network user plane device in a source network slice to which the terminal device has access. Processor 1101 is configured to perform the following operations:

the information of the network state of the source network slice is sent to the core network management device through the transceiver 1103. If the network status of the source network slice meets the first preset condition, the processor 1101 receives a second slice control request sent by the core network management device through the transceiver 1103. The second slice control request includes the identifier of the terminal device. The processor 1101 tears down the bearer established for the terminal device according to the second slice control request.

Optionally, the information of the network state sent by the processor 1101 through the transceiver 1103 includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by a source core network user plane device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by a target core network user plane device corresponding to the target network slice, and an identifier of the target core network user plane device. The identification of the target core network user plane equipment is used for the core network management equipment to determine the service type corresponding to the target core network user plane equipment. The first preset condition includes: the second measurement value is larger than the first measurement value, and the service type corresponding to the target core network user plane device is inconsistent with the service type corresponding to the source core network user plane device.

It should be noted that, for the functions of each functional module in the core network user plane device 110 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network user plane device in the embodiment shown in fig. 3, which is not described herein again.

In a second scheme of the present application, the core network user plane device 110 is a core network user plane device in a target network slice where the terminal device fails to access, and the terminal device has access to a source network slice. The processor 1101 is used for calling the programs and data stored in the memory 1102, and performs the following operations: information of the network state of the target network slice is sent to the core network management device through the transceiver 1103. If the network state of the target network slice meets the third preset condition, the processor 1101 receives a fifth slice control request sent by the core network management device through the transceiver 1103, where the fifth slice control request includes an identifier of the terminal device. The processor 1101 establishes a bearer for the terminal device according to the fifth slice control request.

It should be noted that, for the functions of each functional module in the core network user plane device 110 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network user plane device in the embodiment shown in fig. 5, which is not described herein again.

Fig. 12 is a schematic structural diagram of a core network control plane device provided in this patent application. As shown in fig. 12, the core network control plane device 120 includes a processor 1201, a memory 1202, and a transceiver 1203. Wherein the processor 1201, memory 1202, and transceiver 1203 may be connected by a bus or other means.

Optionally, the network slice 120 may also include a network interface 1204 and a power module 1205.

The processor 1201 may be a DSP chip, among others.

The memory 1202 is used for storing instructions, and in particular implementations, the memory 1202 may be ROM or RAM, and in embodiments of the present invention, the memory 1202 is used for storing network slice control program code.

The transceiver 1203 is used for transceiving signals.

The network interface 1204 is used for the core network control plane device 120 to communicate data with other devices. The network interface 1204 may be a wired interface or a wireless interface.

A power module 1205 is used to supply power to the various modules of the network slice 120.

In a first scheme of the present application, the core network control plane device 120 is a core network control plane device in a source network slice to which the terminal device has access. The processor 1201 is configured to perform the following operations:

the information of the network state of the source network slice is sent to the core network management device through the transceiver 1203. If the network state of the source network slice meets the first preset condition, the processor 1201 receives, through the transceiver 1203, a second slice control request sent by the core network management device. The second slice control request includes the identifier of the terminal device. The processor 1201 removes the bearer established for the terminal device according to the second slice control request.

Optionally, the information of the network state sent by the source network slice includes an identifier of the terminal device, where the identifier of the terminal device is used to instruct the core network management device to obtain, according to the identifier of the terminal device, subscription information corresponding to the identifier of the terminal device from the home subscriber server or the policy and charging rule function device, and if the processor 1201 determines that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the processor 1201 performs target network slice access authorization on the terminal device.

Optionally, the information of the network state sent by the processor 1201 through the transceiver 1203 includes a first measurement value obtained by measuring a downlink signal sent by a source radio access network device corresponding to the source network slice by the terminal device, a second measurement value obtained by measuring a downlink signal sent by a target radio access network device corresponding to the target network slice by the terminal device, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

It should be noted that, for the functions of each functional module in the core network control plane device 120 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network control plane device in the embodiment shown in fig. 4, which is not described herein again.

In a second scheme of the present application, the core network control plane device 120 is a core network control plane device in a target network slice where the terminal device fails to access, and the terminal device has access to a source network slice. The processor 1201 is configured to call the program and data stored in the memory 1202, and perform the following operations: and sending the information of the network state of the target network slice to the core network management device through the transceiver 1203. If the network state of the target network slice meets the third preset condition, the processor 1201 receives, through the transceiver 1203, a fifth slice control request sent by the core network management device, where the fifth slice control request includes an identifier of the terminal device. The processor 1201 establishes a bearer for the terminal device according to the fifth slice control request.

It should be noted that, for the functions of each functional module in the core network control plane device 120 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network control plane device in the embodiment shown in fig. 6, which is not described herein again.

Fig. 13 is a schematic structural diagram of a terminal device provided in the present application. As shown in fig. 13, the terminal device 130 includes a processor 1301, a memory 1302, and a transceiver 1303, wherein the processor 1301, the memory 1302, and the transceiver 1303 may be connected by a bus or other means.

Optionally, the terminal device 130 may further include a network interface 1304 and a power module 1305.

The processor 1301 may be a DSP chip, among others.

The memory 1302 is used for storing instructions, and in a specific implementation, the memory 1302 may be a ROM or a RAM, and in an embodiment of the present invention, the memory 1302 is used for storing a network slice control program code.

The transceiver 1303 is used for transceiving signals.

The network interface 1304 is used for the terminal device 130 to communicate data with other devices. The network interface 1304 may be a wired interface or a wireless interface.

The power module 1305 is used to supply power to each module of the terminal device 130.

In a first aspect of the present application, the processor 1301 is configured to perform the following operations:

the transceiver 1303 receives a first slice control request sent by the core network management device, where the terminal device has accessed to the source network slice, and the first slice control request is sent to the terminal device when the core network management device judges that the network state of the source network slice satisfies a first preset condition according to the information of the network state sent by the source network slice. Processor 1301 determines to switch from the source network slice to the target network slice according to the first slice control request.

Optionally, the first slice control request further includes configuration indication information corresponding to the target network slice. After the processor 1301 receives, through the transceiver 1303, the first slice control request sent by the core network management apparatus, the processor 1301 is further configured to: and carrying out protocol configuration according to the configuration indication information to access the target network slice.

It should be noted that, for the functions of each functional module in the terminal device 130 described in the embodiment of the present invention, reference may be made to the related description of the corresponding terminal device in the embodiment shown in fig. 3 or fig. 4, which is not described herein again.

In a second aspect of the present application, the processor 1301 is configured to perform the following operations:

and receiving a fourth slice control request sent by the core network management device through the transceiver 1303, wherein the terminal device has accessed the source network slice. And the fourth slice control request is sent to the terminal equipment by the core network management equipment when the network state of the source network slice is judged to meet the third preset condition according to the network state information sent by the target network slice. The processor 1301 performs protocol configuration according to the configuration indication information corresponding to the target network slice to access the target network slice.

It should be noted that, for the functions of each functional module in the terminal device 130 described in the embodiment of the present invention, reference may be made to the related description of the corresponding terminal device in the embodiment shown in fig. 5 or fig. 6, which is not described herein again.

Please refer to fig. 14, which is a schematic structural diagram of another core network management device provided in the present application. As shown in fig. 14, the core network management apparatus 140 includes: a receiving module 1401 and a control module 1402.

In a first aspect of the present application, the receiving module 1401 is configured to receive information of a network state sent by a source network slice, where the source network slice is a network slice that a terminal device has access to.

The control module 1402 is configured to control the terminal device to switch from the source network slice to the target network slice if the network state of the source network slice meets a first preset condition.

Specifically, the control module 1402 includes:

and the authorization module is used for performing target network slice access authorization on the terminal equipment.

And the first sending module is used for sending the first slice control request to the terminal equipment. The first slice control request comprises an identification of the target network slice, and the identification of the target network slice is used for instructing the terminal device to determine to switch from the source network slice to the target network slice according to the identification of the target network slice.

Specifically, the control module 1402 further includes:

and the second sending module is used for sending a second slice control request comprising the identification of the terminal equipment to the target network slice. And the second slice control request is used for indicating the target network slice to establish a bearer for the terminal equipment corresponding to the identifier of the terminal equipment.

And the third sending module is used for sending a third slice control request comprising the identifier of the terminal equipment to the source network slice when the target network slice is determined to establish the bearer for the terminal equipment. And the third slice control request is used for indicating the source network slice to remove the bearer established for the terminal equipment corresponding to the identifier of the terminal equipment.

Optionally, the authorization module is specifically configured to: and acquiring the identifier of the terminal equipment from the identifier set of the terminal equipment which has accessed to the source network slice, and acquiring subscription information corresponding to the identifier of the terminal equipment from a home subscriber server or a policy and charging rule function device according to the identifier of the terminal equipment. And if the fact that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment is determined according to the subscription information, the authorization module carries out default network slice access authorization on the terminal equipment.

Optionally, the information of the network state sent by the source network slice includes an identifier of the terminal device. The authorization module is specifically configured to: and acquiring the identifier of the terminal equipment from the network state information, and acquiring the subscription information corresponding to the identifier of the terminal equipment from a home subscriber server or a policy and charging rule function device according to the identifier of the terminal equipment. And if the terminal equipment is determined to allow the core network management equipment to carry out network slice switching control on the terminal equipment according to the subscription information, carrying out target network slice access authorization on the terminal equipment.

The receiving module 1401 is specifically configured to: and receiving the network state information sent by the radio access network equipment or the core network user plane equipment or the core network control plane equipment, wherein the radio access network equipment or the core network user plane equipment or the core network control plane equipment is the equipment in the source network slice.

It should be noted that, for the functions of each functional module in the core network management device 140 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network management device in the embodiment shown in fig. 3 or fig. 4, which is not described herein again.

In a second aspect of the present application, the receiving module 1401 is configured to receive information of a network state sent by a target network slice, where the target network slice is a network slice in which access of a terminal device fails, and the terminal device has access to a source network slice.

The control module 1402 is configured to control the terminal device to access the target network slice if the network state of the target network slice meets a third preset condition.

The control module 1402 includes:

And the first sending module is used for sending a fourth slice control request to the terminal equipment, wherein the fourth slice control request comprises configuration indication information corresponding to the target network slice. And the configuration indication information corresponding to the target network slice is used for indicating the terminal equipment to carry out protocol configuration according to the configuration indication information so as to access the target network slice.

The control module 1402 also includes:

and the second sending module is used for sending a fifth slice control request comprising the identification of the terminal equipment to the target network slice. And the fifth slice control request is used for indicating the target network slice to establish a bearer for the terminal equipment corresponding to the identifier of the terminal equipment.

Optionally, the authorization module is specifically configured to: and acquiring the identifier of the terminal equipment from a pre-recorded terminal equipment identifier set, and acquiring subscription information corresponding to the identifier of the terminal equipment from a home subscriber server or a policy and charging rule function device according to the identifier of the terminal equipment. And if the terminal equipment is determined to allow the core network management equipment to carry out network slice access control on the terminal equipment according to the subscription information, carrying out target network slice access authorization on the terminal equipment.

The receiving module 1401 is specifically configured to: and receiving the network state information sent by the radio access network equipment or the core network user plane equipment or the core network control plane equipment, wherein the radio access network equipment or the core network user plane equipment or the core network control plane equipment is the equipment in the target network slice.

It should be noted that, for the functions of each functional module in the core network management device 140 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network management device in the embodiment shown in fig. 5 or fig. 6, which is not described herein again.

Fig. 15 is a schematic structural diagram of another radio access network device provided in the present application. As shown in fig. 15, the radio access network device 150 includes: a sending module 1501, a receiving module 1502, and a processing module 1503.

In the first scheme of the present application, the sending module 1501 is configured to send information of a network state of a source network slice to a core network management device.

A receiving module 1502 is configured to receive a second slice control request sent by a core network management device if a network state of a source network slice meets a first preset condition. The second slice control request includes the identifier of the terminal device.

A processing module 1503, configured to tear down the bearer established for the terminal device according to the second slice control request.

Optionally, the information of the network state sent by the source network slice includes an identifier of the terminal device, where the identifier of the terminal device is used to instruct the core network management device to obtain, according to the identifier of the terminal device, subscription information corresponding to the identifier of the terminal device from the home subscriber server or the policy and charging rule function device, and if it is determined that the terminal device allows the core network management device to perform network slice switching control on the terminal device according to the subscription information, the core network management device performs target network slice access authorization on the terminal device.

Optionally, the information of the network state sent by the sending module 1501 includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by the source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by the target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

It should be noted that, for the functions of each functional module in the radio access network device 150 described in the embodiment of the present invention, reference may be made to the related description of the corresponding radio access network device in the embodiment shown in fig. 3, which is not described herein again.

In a second solution of the present application, the sending module 1501 is configured to send information of a network state of a target network slice to a core network management device.

A receiving module 1502 is configured to receive a fifth slice control request sent by the core network management device if the network state of the target network slice meets a third preset condition. The fifth slice control request includes the identifier of the terminal device.

A processing module 1503, configured to establish a bearer for the terminal device according to the fifth slice control request.

It should be noted that, for the functions of each functional module in the radio access network device 150 described in the embodiment of the present invention, reference may be made to the related description of the corresponding radio access network device in the embodiment shown in fig. 5, which is not described herein again.

Please refer to fig. 16, which is a schematic structural diagram of another core network user plane device provided in the present application. As shown in fig. 16, the core network user plane device 160 includes: a sending module 1601, a receiving module 1602, and a processing module 1603.

In a first scheme of the present application, the sending module 1601 is configured to send information of a network state of a source network slice to a core network management device.

A receiving module 1602, configured to receive a second slice control request sent by a core network management device if a network state of a source network slice meets a first preset condition. The second slice control request includes the identifier of the terminal device.

A processing module 1603, configured to tear down the bearer established for the terminal device according to the second slice control request.

Optionally, the information of the network state sent by the sending module 1601 includes a first measurement value obtained by the terminal device measuring a downlink signal sent by a source core network user plane device corresponding to the source network slice, a second measurement value obtained by the terminal device measuring a downlink signal sent by a target core network user plane device corresponding to the target network slice, and an identifier of the target core network user plane device. The identification of the target core network user plane equipment is used for the core network management equipment to determine the service type corresponding to the target core network user plane equipment. The first preset condition includes: the second measurement value is larger than the first measurement value, and the service type corresponding to the target core network user plane device is inconsistent with the service type corresponding to the source core network user plane device.

It should be noted that, for the functions of each functional module in the core network user plane device 160 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network user plane device in the embodiment shown in fig. 3, which is not described herein again.

In a second scheme of the present application, the sending module 1601 is configured to send information of a network state of a target network slice to a core network management device.

A receiving module 1602, configured to receive a fifth slice control request sent by the core network management device if the network state of the target network slice meets a third preset condition. The fifth slice control request includes the identifier of the terminal device.

A processing module 1603, configured to establish a bearer for the terminal device according to the fifth slice control request.

It should be noted that, for the functions of each functional module in the core network user plane device 160 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network user plane device in the embodiment shown in fig. 5, which is not described herein again.

Please refer to fig. 17, which is a schematic structural diagram of another core network control plane device provided in the present application. As shown in fig. 17, the core network control plane device 170 includes: a transmitting module 1701, a receiving module 1702 and a processing module 1703.

In the first solution of the present application, the sending module 1701 is configured to send information of a network state of a source network slice to the core network management device.

A receiving module 1702, configured to receive a second slice control request sent by a core network management device if the network state of the source network slice meets a first preset condition. The second slice control request includes the identifier of the terminal device.

A processing module 1703, configured to tear down the bearer established for the terminal device according to the second slice control request.

Optionally, the information of the network state sent by the sending module 1701 includes a first measurement value obtained by measuring, by the terminal device, a downlink signal sent by the source radio access network device corresponding to the source network slice, a second measurement value obtained by measuring, by the terminal device, a downlink signal sent by the target radio access network device corresponding to the target network slice, and an identifier of the target radio access network device. The identification of the target wireless access network equipment is used for the core network management equipment to determine the service type corresponding to the target wireless access network equipment. The first preset condition includes: the second measurement value is greater than the first measurement value, and the service type corresponding to the target wireless access network device is inconsistent with the service type corresponding to the source wireless access network device.

It should be noted that, for the functions of each functional module in the core network control plane device 170 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network control plane device in the embodiment shown in fig. 4, which is not described herein again.

In a second solution of the present application, the sending module 1701 is configured to send information of a network state of a target network slice to a core network management device.

A receiving module 1702, configured to receive a fifth slice control request sent by the core network management device if the network state of the target network slice meets a third preset condition. The fifth slice control request includes the identifier of the terminal device.

A processing module 1703, configured to establish a bearer for the terminal device according to the fifth slice control request.

It should be noted that, for the functions of each functional module in the core network control plane device 170 described in the embodiment of the present invention, reference may be made to the related description of the corresponding core network control plane device in the embodiment shown in fig. 6, which is not described herein again.

Please refer to fig. 18, which is a schematic structural diagram of another terminal device provided in the present application. As shown in fig. 18, the terminal device 180 includes: a receiving module 1801 and a processing module 1802.

In a first scheme of the present application, the receiving module 1801 is configured to receive a first slice control request sent by a core network management device, where a terminal device has access to a source network slice, and the first slice control request is sent to the terminal device when the core network management device determines, according to information of a network state sent by the source network slice, that the network state of the source network slice satisfies a first preset condition.

A processing module 1802 for determining to switch from a source network slice to a target network slice in accordance with a first slice control request.

Optionally, the terminal device 180 further includes: and the configuration module is used for carrying out protocol configuration according to the configuration indication information so as to access the target network slice.

It should be noted that, for the functions of each functional module in the terminal device 180 described in the embodiment of the present invention, reference may be made to the related description of the corresponding terminal device in the embodiment shown in fig. 3 or fig. 4, which is not described herein again.

In a second scheme of the present application, the receiving module 1801 is configured to receive a fourth slice control request sent by a core network management device, where a terminal device has access to a source network slice. And the fourth slice control request is sent to the terminal equipment by the core network management equipment when the network state of the target network slice is judged to meet the third preset condition according to the network state information sent by the target network slice.

And the processing module 1802 is configured to perform protocol configuration according to the configuration indication information corresponding to the target network slice to access the target network slice.

It should be noted that, for the functions of each functional module in the terminal device 180 described in the embodiment of the present invention, reference may be made to the related description of the corresponding terminal device in the embodiment shown in fig. 5 or fig. 6, which is not described herein again.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims and drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A network slice control method, comprising:

the method comprises the steps that core network management equipment receives network state information sent by a source network slice, wherein the source network slice is a network slice accessed by terminal equipment, and the network state information comprises a network resource residual value or a load value;

if the network state meets a first preset condition, the core network management device controls the terminal device to switch from the source network slice to a target network slice, and the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value, and the target network slice is a default network slice or a network slice meeting a second preset condition.

2. The method of claim 1, wherein the core network management device controlling the terminal device to switch from the source network slice to a target network slice comprises:

the core network management equipment performs the target network slice access authorization on the terminal equipment;

the core network management equipment sends a first slice control request to the terminal equipment; the first slice control request comprises an identifier of the target network slice, and the identifier of the target network slice is used for instructing the terminal device to determine to switch from the source network slice to the target network slice according to the identifier of the target network slice.

3. The method of claim 2, wherein the first slice control request further includes configuration indication information corresponding to the target network slice, and wherein the configuration indication information is used to instruct the terminal device to perform protocol configuration according to the configuration indication information to access the target network slice.

4. The method according to claim 2 or 3, wherein after the core network management device performs the target network slice access authorization on the terminal device, the method further comprises:

The core network management equipment sends a second slice control request to the target network slice; the second slice control request comprises an identifier of the terminal device, and the second slice control request is used for indicating the target network slice to establish a bearer for the terminal device corresponding to the identifier of the terminal device;

when the core network management device determines that the target network slice establishes a bearer for the terminal device, the core network management device sends a third slice control request to the source network slice; the third slice control request includes an identifier of the terminal device, and the third slice control request is used for instructing the source network slice to remove a bearer established for the terminal device corresponding to the identifier of the terminal device.

5. The method according to any one of claims 2 to 3, wherein the core network management device performs the target network slice access authorization on the terminal device, and includes:

the core network management equipment acquires the identifier of the terminal equipment from a terminal equipment identifier set accessed to the source network slice, and acquires subscription information corresponding to the identifier of the terminal equipment from a home subscriber server or a policy and charging rule function device according to the identifier of the terminal equipment;

And if the core network management equipment determines that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment according to the subscription information, the core network management equipment carries out target network slice access authorization on the terminal equipment.

6. The method according to any one of claims 2 to 3, wherein the information of the network status comprises an identifier of the terminal device; the core network management device performs the target network slice access authorization on the terminal device, and the method includes:

the core network management equipment acquires the identifier of the terminal equipment from the information of the network state, and acquires subscription information corresponding to the identifier of the terminal equipment from a home subscriber server or a policy and charging rule function device according to the identifier of the terminal equipment;

7. The method according to any one of claims 1 to 3, wherein the receiving, by the core network management device, the information of the network status sent by the source network slice comprises:

the core network management device receives network state information sent by a radio access network device, a core network user plane device, or a core network control plane device, where the radio access network device, the core network user plane device, or the core network control plane device is a device in the source network slice.

8. A network slice control method, comprising:

the method comprises the steps that a wireless access network device sends information of network states of source network slices to a core network management device, wherein the source network slices are network slices accessed by a terminal device, the wireless access network device is the wireless access network device of the source network slices, and the information of the network states comprises network resource residual values or load values;

if the network state meets a first preset condition, the radio access network device receives a second slice control request sent by the core network management device, where the second slice control request includes an identifier of the terminal device, and the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value;

And the radio access network equipment removes the load established for the terminal equipment corresponding to the identifier of the terminal equipment according to the second slice control request.

9. A network slice control method, comprising:

the method comprises the steps that core network control surface equipment sends information of network states of source network slices to core network management equipment, wherein the source network slices are network slices accessed by terminal equipment, the core network control surface equipment is the core network control surface equipment of the source network slices, and the information of the network states comprises network resource residual values or load values;

if the network state meets a first preset condition, the core network control plane device receives a second slice control request sent by the core network management device, where the second slice control request includes an identifier of the terminal device, and the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value;

and the core network control plane device removes the bearer established for the terminal device corresponding to the identifier of the terminal device according to the second slice control request.

10. A network slice control method, comprising:

The terminal equipment receives a first slice control request sent by core network management equipment; the terminal device has access to a source network slice, the first slice control request is sent to the terminal device by the core network management device when judging that the network state of the source network slice meets a first preset condition according to the information of the network state sent by the source network slice, the information of the network state includes a network resource residual value or a load value, the first slice control request includes an identifier of a target network slice, and the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value, and the target network slice is a default network slice or a network slice meeting a second preset condition;

and the terminal equipment determines a target network slice corresponding to the identifier for switching from the source network slice to the target network slice according to the first slice control request.

11. The method of claim 10, wherein the first slice control request further comprises configuration indication information corresponding to the target network slice; after the terminal device receives the first slice control request sent by the core network management device, the method further includes:

And the terminal equipment carries out protocol configuration according to the configuration indication information so as to access the target network slice.

12. A core network management device, comprising a processor, a memory and a transceiver, wherein the memory is configured to store instructions, and the processor is configured to call the instructions stored in the memory to perform the following operations:

receiving, by the transceiver, information of a network state sent by a source network slice, where the source network slice is a network slice to which a terminal device has access, and the information of the network state includes a network resource remaining value or a load value;

if the network state meets a first preset condition, the processor controls the terminal device to switch from the source network slice to a target network slice, and the first preset condition comprises: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value, and the target network slice is a default network slice or a network slice meeting a second preset condition.

13. The core network management device of claim 12, wherein the processor controls the terminal device to switch from the source network slice to a target network slice, comprising:

The processor performs the target network slice access authorization on the terminal equipment;

the processor sends a first slice control request to the terminal equipment through the transceiver; the first slice control request is used for instructing the terminal equipment to determine to switch from the source network slice to the target network slice according to the identification of the target network slice.

14. The core network management device according to claim 13, wherein the first slice control request further includes configuration indication information corresponding to the target network slice, and the configuration indication information is used to indicate the terminal device to perform protocol configuration according to the configuration indication information to access the target network slice.

15. The core network management device according to claim 13 or 14, wherein after the processor performs the target network slice access authorization on the terminal device, the processor is further configured to:

transmitting, by the transceiver, a second slice control request to the target network slice; the second slice control request comprises an identifier of the terminal device, and the second slice control request is used for indicating the target network slice to establish a bearer for the terminal device corresponding to the identifier of the terminal device;

When the processor determines that the target network slice establishes a bearer for the terminal device, sending a third slice control request to the source network slice through the transceiver; the third slice control request includes an identifier of the terminal device, and the third slice control request is used for instructing the source network slice to remove a bearer established for the terminal device corresponding to the identifier of the terminal device.

16. The core network management device of any one of claims 13 to 14, wherein the processor performs the target network slice access authorization for the terminal device, and comprises:

the processor acquires the identifier of the terminal equipment from the identifier set of the terminal equipment which is accessed to the source network slice, and acquires subscription information corresponding to the identifier of the terminal equipment from a home subscriber server or a policy and charging rule function device according to the identifier of the terminal equipment;

and if the processor determines that the terminal equipment allows the core network management equipment to carry out network slice switching control on the terminal equipment according to the subscription information, the processor carries out target network slice access authorization on the terminal equipment.

17. The core network management device according to any one of claims 13 to 14, wherein the information of the network status includes an identifier of the terminal device; the processor performs the target network slice access authorization on the terminal device, and includes:

the processor acquires the identifier of the terminal equipment from the information of the network state, and acquires subscription information corresponding to the identifier of the terminal equipment from a home subscriber server or a policy and charging rule function device according to the identifier of the terminal equipment;

18. The core network management device according to any one of claims 12 to 14, wherein the processor receives, through the transceiver, information of the network status sent by a source network slice, and includes:

the processor receives, through the transceiver, information of a network state sent by a radio access network device, a core network user plane device, or a core network control plane device, where the radio access network device, the core network user plane device, or the core network control plane device is a device in the source network slice.

19. A radio access network device that is a source network slice to which a terminal device has access, the radio access network device comprising a processor, a memory, and a transceiver, wherein the memory is configured to store instructions, and the processor is configured to invoke the instructions stored in the memory to perform the following operations:

transmitting, by the transceiver, information of a network state of the source network slice to a core network management device, the information of the network state including a network resource remaining value or a load value;

if the network state meets a first preset condition, receiving a second slice control request sent by the core network management equipment through the transceiver, wherein the second slice control request comprises an identifier of the terminal equipment, and the first preset condition comprises: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value;

and removing the load established for the terminal equipment corresponding to the identifier of the terminal equipment according to the second slice control request.

20. A core network control plane device, wherein the core network control plane device is a core network control plane device of a source network slice to which a terminal device has access; the core network control plane device comprises a processor, a memory and a transceiver, wherein the memory is used for storing instructions, and the processor is used for calling the instructions stored in the memory to execute the following operations:

21. A terminal device comprising a processor, a memory, and a transceiver, wherein the memory is configured to store instructions and the processor is configured to invoke the instructions stored in the memory to perform the following operations:

receiving a first slice control request sent by core network management equipment through the transceiver; the terminal device has access to a source network slice, the first slice control request is sent to the terminal device by the core network management device when judging that the network state of the source network slice meets a first preset condition according to the information of the network state sent by the source network slice, the information of the network state includes a network resource residual value or a load value, the first slice control request includes an identifier of a target network slice, and the first preset condition includes: the network resource residual value is less than or equal to a first preset threshold value or the load value is greater than or equal to a second preset threshold value, and the target network slice is a default network slice or a network slice meeting a second preset condition;

And determining a target network slice corresponding to the identifier of the target network slice switched from the source network slice according to the first slice control request.

22. The terminal device of claim 21, wherein the first slice control request further comprises configuration indication information corresponding to the target network slice; after the processor receives, through the transceiver, a first slice control request sent by a core network management device, the processor is further configured to:

and carrying out protocol configuration according to the configuration indication information to access the target network slice.