CN109587742B

CN109587742B - Method and apparatus for wireless communication

Info

Publication number: CN109587742B
Application number: CN201710900332.9A
Authority: CN
Inventors: 金巴
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-09-28
Filing date: 2017-09-28
Publication date: 2020-09-29
Anticipated expiration: 2037-09-28
Also published as: CN109587742A

Abstract

The embodiment of the invention provides a wireless communication method and equipment, wherein the method comprises the following steps: the method comprises the steps that a first network device determines whether slice information of a target network slice is acquired or not, wherein the target network slice comprises a first network slice and/or a second network slice, the first network slice is a network slice registered by a terminal device, and the second network slice is a network slice supported by the terminal device; and when determining to acquire the slice information of the target network slice, the first network equipment executes related operation of acquiring the slice information of the target network slice. The method of the embodiment of the invention can enable the network equipment to acquire the slice information of the network slices registered and/or supported by the terminal equipment, and further enable the network equipment to redirect the terminal equipment or enable the terminal equipment to reside on the appropriate network slices according to the acquired slice information of the network slices.

Description

Method and apparatus for wireless communication

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and apparatus for wireless communication.

Background

In future wireless Communication systems (e.g., 5G), network slices (network slices) are introduced at a network layer, and may be selected for a service type (e.g., Ultra Reliability and Ultra low latency Communication (URLLC) service, Enhanced Mobile Broadband (eMBB) service), and different configuration parameters are used.

When a Radio Access Network (RAN) device selects a redirection Network slice or a residence Network slice of a terminal device, it needs to know a Network slice registered by the terminal device or a supported Network slice, but at present, the RAN device cannot know slice information of the Network slice registered by the terminal device or the supported Network slice, which results in that the terminal device cannot be redirected or the terminal device resides on a proper Network slice.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and equipment, and aims to solve the problem that a network device cannot acquire slice information of a network slice registered by the terminal device or a network slice supported by the terminal device, so that the terminal device cannot be redirected or cannot be resident on a proper network slice.

In a first aspect, a method of wireless communication is provided, including:

the method comprises the steps that a first network device determines whether slice information of a target network slice is acquired or not, wherein the target network slice comprises a first network slice and/or a second network slice, the first network slice is a network slice registered by a terminal device, and the second network slice is a network slice supported by the terminal device;

and when determining to acquire the slice information of the target network slice, the first network equipment executes related operation of acquiring the slice information of the target network slice.

In a second aspect, a method of wireless communication is provided, including:

the second network equipment determines whether the terminal equipment is switched to the first network equipment by the second network equipment;

when the network device determines that the terminal device is switched from the second network device to the first network device, sending slice information of a target network slice to the first network device, where the target network slice includes a first network slice, and the first network slice is a network slice registered by the terminal device.

In a third aspect, a method of wireless communication is provided, including:

the method comprises the steps that terminal equipment records an identifier of a service cell, wherein the service cell is a cell which provides service for the terminal equipment before the terminal equipment enters an idle state or an idle state in a cell of second network equipment;

and when the terminal equipment enters an idle state or an idle state and is switched from the second network equipment to the first network equipment, sending reporting information to the first network equipment, wherein the reporting information comprises the identification of the serving cell and the identification of the terminal equipment.

In a fourth aspect, a method of wireless communication is provided, comprising:

the terminal equipment receives indication information sent by first network equipment, wherein the indication information comprises at least one of the following information: slice information of the priority network slice, information of a cell corresponding to the priority network slice, frequency information of the priority network slice, and a Radio Access Technology (RAT) supported by the priority network slice, wherein the priority network slice comprises a priority redirection network slice or a priority residence network slice;

redirecting to the priority network slice or residing on a cell corresponding to the priority network slice according to the indication information;

the priority network slice is determined by a first network device according to a network slice supported by the first network device and a target network slice, wherein the target network slice comprises a first network slice and/or a second network slice, the first network slice is a network slice registered by a terminal device, and the second network slice is a network slice supported by the terminal device.

In a fifth aspect, a network device is provided, which includes:

the processing module is used for determining whether slice information of a target network slice is acquired, wherein the target network slice comprises a first network slice and/or a second network slice, the first network slice is a network slice registered by the terminal equipment, and the second network slice is a network slice supported by the terminal equipment;

and the transceiver module is used for executing relevant operations of acquiring the slice information of the target network slice when the first processing module determines to acquire the slice information of the target network slice.

In a sixth aspect, a network device is provided, comprising:

the processing module is used for determining whether the terminal equipment is switched to the first network equipment from the network equipment;

a transceiver module, configured to send slice information of a target network slice to the first network device when the network device determines that the terminal device is switched from the network device to the first network device, where the target network slice includes a first network slice, and the first network slice is a network slice registered by the terminal device.

In a seventh aspect, a terminal device is provided, including:

a processing module, configured to record an identifier of a serving cell, where the serving cell is a cell that provides service for the terminal device before the terminal device enters an idle state or an idle state in a cell of a second network device;

and the transceiver module is configured to send reporting information to the first network device when the terminal device enters an idle state or an idle state and is switched from the second network device to the first network device, where the reporting information includes an identifier of the serving cell and an identifier of the terminal device.

In an eighth aspect, a terminal device is provided, which includes:

a transceiver module, configured to receive indication information sent by a first network device, where the indication information includes at least one of the following information: slice information of the priority network slice, information of a cell corresponding to the priority network slice, frequency information of the priority network slice, and a Radio Access Technology (RAT) supported by the priority network slice, wherein the priority network slice comprises a priority redirection network slice or a priority residence network slice;

the processing module is used for redirecting to the priority network slice or residing on a cell corresponding to the priority network slice according to the indication information;

In a ninth aspect, there is provided a network device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method of wireless communication according to the first aspect.

In a tenth aspect, there is provided a network device comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method of wireless communication according to the second aspect.

In an eleventh aspect, there is provided a terminal device comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, performs the steps of the method of wireless communication according to the third aspect.

In a twelfth aspect, a terminal device is provided, which includes: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, performs the steps of the method of wireless communication according to the fourth aspect.

In a thirteenth aspect, a computer-readable medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of wireless communication according to the first aspect.

In a fourteenth aspect, a computer readable medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the method of wireless communication according to the second aspect.

In a fifteenth aspect, a computer-readable medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the method of wireless communication according to the third aspect.

In a sixteenth aspect, a computer-readable medium is provided, on which a computer program is stored which, when being executed by a processor, realizes the steps of the method of wireless communication according to the fourth aspect.

In the embodiment of the present invention, when determining to acquire slice information of a network slice registered by a terminal device and/or slice information of a network slice supported by the terminal device, a network device may execute a related operation of acquiring the slice information of the network slice, so as to achieve acquisition of the slice information of the network slice, and further, the network device may redirect the terminal device according to the acquired slice information of the network slice or make the terminal device reside on a suitable network slice.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a schematic flow chart of a method of wireless communication according to an embodiment of the application.

Fig. 2 is another schematic flow chart diagram of a method of wireless communication according to an embodiment of the present application.

Fig. 3 is a schematic flow chart diagram of a method of wireless communication in accordance with a specific embodiment of the present application.

Fig. 4 is a schematic flow chart diagram of a method of wireless communication according to another specific embodiment of the present application.

Fig. 5 is a schematic flow chart diagram of a method of wireless communication according to yet another embodiment of the present application.

Fig. 6 is a schematic flow chart diagram of a method of wireless communication according to yet another embodiment of the present application.

Fig. 7 is a schematic flow chart diagram of a method of wireless communication according to another embodiment of the present application.

Fig. 8 is a schematic flow chart diagram of a method of wireless communication according to yet another embodiment of the present application.

Fig. 9 is a schematic flow chart diagram of a method of wireless communication according to yet another embodiment of the present application.

Fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of a network device according to another embodiment of the present application.

Fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Fig. 13 is a schematic structural diagram of a terminal device according to another embodiment of the present application.

Fig. 14 is a schematic structural diagram of a network device according to yet another embodiment of the present application.

Fig. 15 is a schematic structural diagram of a terminal device according to still another embodiment of the present application.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. In the claims and the specification "and/or" means at least one of the connected objects.

It should be understood that the technical solution of the embodiment of the present application may be applied to a 5G system, or a New Radio (NR) system.

In the embodiment of the present application, the Terminal device may include, but is not limited to, a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (Mobile Telephone), a User Equipment (UE), a handset (handset), a portable device (portable Equipment), a vehicle (vehicle), and the like, and the Terminal device may communicate with one or more core networks through a Radio Access Network (RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the Terminal device may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile apparatus.

The network device according to the embodiment of the present application is a device deployed in a radio access network to provide a wireless communication function for a terminal device. The network device may be a base station, and the base station may include various macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of devices having a base station function may differ. For example, in an LTE network, referred to as an Evolved node B (eNB or eNodeB), in a third Generation (3rd Generation, 3G) network, referred to as a node B (node B), and so on.

Fig. 1 illustrates a method of wireless communication according to one embodiment of the present application. As shown in fig. 1, the method 100 includes:

s110, a first network device determines whether slice information of a target network slice is acquired, wherein the target network slice comprises a first network slice and/or a second network slice, the first network slice is a network slice registered by a terminal device, and the second network slice is a network slice supported by the terminal device.

Optionally, when the first network device needs to determine the redirection network slice of the terminal device or needs to determine the resident network slice of the terminal device, the first network device obtains slice information of the target network slice.

It should be noted that the first network slice may be one or more network slices, and the second network slice may be one or more network slices.

S120, when the first network device determines to acquire the slice information of the target network slice, the first network device executes the relevant operation of acquiring the slice information of the target network slice.

Specifically, in some embodiments, the target network slice includes a first network slice, that is, a network slice registered by the first network device is to be acquired by the first network device, and the first network device sends first request information to an Access and mobility Management entity (AMF) or a Session Management Function (SMF), where the first request information includes an identifier of the terminal device, and the first request information is used to request slice information of the first network slice.

Correspondingly, after receiving the first request message sent by the first network device, the AMF or the SMF sends first feedback information to the first network device, where the first feedback information includes slice information of the first network slice. Or after receiving the first request message sent by the first network device, the AMF or the SMF sends second feedback information to the first network device, where the second feedback information is used to instruct the AMF or the SMF to reject providing the slice information of the first network slice. For example, if the network slice registered by the terminal device is a network slice common to the first network device and another network device, the AMF entity and the SMF entity refuse to provide the slice information registered by the terminal device to the first network device.

Optionally, in some embodiments, the second feedback information further includes first reason indication information indicating a reason for rejecting providing the slice information of the first network slice.

Specifically, in some embodiments, the target network slice includes a second network slice, and the first network device sends second request information to a Unified Data Management (UDM) entity, where the second request information includes an identifier of the terminal device, and the second request information is used to request slice information of the second network slice.

Correspondingly, the UDM entity sends third feedback information to the first network device, where the third feedback information includes slice information of the second network slice, or the UDM entity sends fourth feedback information to the first network device, where the fourth feedback information is used to indicate that the provision of the slice information of the second network slice is rejected.

Optionally, in some embodiments, the fourth feedback information further includes second reason indication information indicating a reason for rejecting providing the slice information of the second network slice.

Specifically, in other embodiments, the terminal device is switched from the second network device to the first network device, and the first network device receives the slice information of the first network slice sent by the second network device when determining that the terminal device is switched from the second network device to the first network device, or sends third request information to the second network device before receiving the slice information of the first network slice sent by the second network device, where the third request information is used to request the second network device for the slice information of the first network slice.

Optionally, as an embodiment, the network interface between the first network device and the second network device may be at least one of the following interfaces: an X2 interface, an Xn interface, an S1 interface, and an NG interface.

Optionally, in some embodiments, when the terminal device moves from the second network device to the first network device in an Idle (Idle) state or an Idle (Inactive) state, the terminal device reports the identifier of the terminal device and the identifier of the serving cell to the first network device. The first network device receives the report information sent by the terminal device, the report information includes the identifier of the serving cell and the identifier of the terminal device, and the serving cell is a cell which provides service for the terminal device before the terminal device enters an Idle state or an Inactive state in the cell of the second network device. And after the first network equipment receives the report information sent by the terminal equipment, determining third request information according to the report information. Specifically, after receiving the report information, the first network device determines to which network device to send the request according to the identifier of the serving cell in the report information, and determines to which terminal device to request the slice information of the network slice registered by the terminal device according to the identifier of the terminal device in the report information.

Optionally, as an example, the serving Cell is identified as an Evolved Universal Terrestrial Radio Access Network (ECGI) Cell global identifier of the serving Cell.

Specifically, in some embodiments, the first network device receives a Message 3(Message 3, Msg3) sent by the terminal device, where the Msg3 includes the report information. Or the first network device receives a message 5(Msg 5) sent by the terminal device, and the Msg5 includes the report information. Or the first network equipment receives a special signaling sent by the terminal equipment, wherein the special signaling comprises the report information.

In the embodiment of the present application, optionally, as shown in fig. 2, the method 100 further includes:

s130, determining a priority network slice of the terminal device according to the network slice supported by the first network device and the target network slice, wherein the priority network slice comprises a priority redirection network slice or a priority residence network slice.

It can be appreciated that when the terminal device is in a connected state and the first network device determines that network congestion occurs, the first network device determines a priority redirection network slice for the terminal device. When the terminal device is determined to be required to release the connection, the first network device determines the network slice which is preferentially resided in the terminal device.

That is to say, the method 100 enables the first network device to redirect the connected terminal device to the designated network slice to continue to perform the service, and let the Idle-state or Inactive-state terminal device reside on the designated resident network slice. The redirection of the terminal device to the network slice may be understood as the redirection of the terminal device to a frequency corresponding to the network slice, or to a cell corresponding to the network slice, or to a Radio Access Technology (RAT) corresponding to the network slice. The terminal device residing on the network slice may be understood as residing on a cell corresponding to the network slice, or residing on a frequency corresponding to the network slice, or residing on a RAT corresponding to the network slice.

Optionally, in some embodiments, the first network device stores therein information about network slices supported by the first network device, such as an identification of a network slice and a frequency list of the network slice.

Optionally, in some embodiments, the first network device determines a priority network slice of the terminal device according to the network slice supported by the first network device, a target network slice, and a target parameter, where the target parameter is at least one of the following parameters: the number of times the service is provided to the terminal device, the frequency of providing the service to the terminal device, and the number of loads of the service. The frequency of providing services for the terminal device can also be understood as the frequency of providing services for the terminal device. Such as the degree of frequent use by the user during the day. According to different needs and preferences, it is common, that is, frequently provides services to users. Because the target parameters are considered when the preferred network slice is selected, the problem of network congestion can be solved, and the terminal equipment can be redirected or resided on the appropriate network slice.

Optionally, in some embodiments, the number of times that the priority network slice provides services for the terminal device is greater than or equal to a first preset value; or, the frequency of the prior network slice providing service for the terminal equipment is greater than or equal to a second preset value; or, the number of loads of the prioritized network slice service is less than or equal to a third preset threshold.

For example, the first network device may determine the network slice to which the terminal device has redirected the most number of times or has resided the most number of times so far as the preferred network slice. Or the first network device may determine a network slice with the highest frequency of providing services for the terminal device as a priority network slice, or the first network device may determine a network slice that is the most idle (the least amount of load of services) as a priority network slice. Or the first network slice determines the network slice with the least load of service in the network slices with the service times for the terminal equipment greater than the first preset value as the priority network slice.

Specifically, in some embodiments, when the first network device determines that the network slices supported by the first network device include at least one of the first network slices, the first network device determines a priority network slice of the terminal device according to the at least one first network slice and the target parameter, the priority network slice being one of the at least one first network slice.

Specifically, in other embodiments, when the first network device determines that the first network slice is not included in the network slices supported by the first network device, the first network device determines a priority network slice of the terminal device according to the second network slice and the target parameter, where the priority network slice is one of the second network slices.

Optionally, in some embodiments, the first network device sends indication information to the terminal device, where the indication information includes an indication of one of the following information: slice information of the priority network slice, information of a cell corresponding to the priority network slice, frequency information of the priority network slice, and a Radio Access Technology (RAT) supported by the priority network slice.

Specifically, in some embodiments, the indication information is redirection information, and after receiving the indication information, the terminal device determines a priority redirection network slice that needs to be redirected preferentially according to the indication information, and redirects the priority redirection network slice to the priority redirection network slice. Or the indication information is connection release information, and after receiving the indication information, the terminal device releases the connection with the first network device and resides in the cell of the network slice preferentially residing indicated by the indication information.

A method of wireless communication according to an embodiment of the present application will be described below with reference to specific embodiments. The network device is taken as an example as a base station in describing the specific embodiment, and is merely an example.

Fig. 3 illustrates a method of wireless communication according to a specific embodiment of the present application. As shown in fig. 3, the method 200 includes:

s210, the base station requests the slice information of the network slice from the core network entity.

It should be noted that, in the method 200, the terminal device is in a connected state, that is, an RRC connection is established between the terminal device and the base station.

Alternatively, if the base station determines to acquire slice information of the network slice registered by the terminal device in S210, the base station requests the AMF entity or the SMF entity for the slice information of the network slice registered by the terminal device. Or if the base station determines to acquire the slice information of the network slice supported by the terminal device in S210, the base station requests the UDM entity for the slice information of the network slice supported by the terminal device. At least the ID of the terminal device is included in the request message sent by the base station to the AMF entity, the SMF entity or the UDM entity.

S220, the core network entity sends feedback information to the base station.

Optionally, in S220, the AMF entity or the SMF entity provides, to the base station, slice information of a network slice registered by the terminal device through the feedback information, the UDM entity provides, to the base station, slice information of a network slice supported by the terminal device through the feedback information, or the AMF entity or the SMF entity informs the base station to reject providing, to the base station, slice information of a network slice registered by the terminal device through the feedback information, and the UDM informs the base station to reject providing, to the base station, slice information of a network slice supported by the terminal device through the feedback information.

Optionally, in S220, when the AMF entity, the SMF entity, or the UDM entity determines to provide the base station with slice information of network slices registered or supported by the terminal device, the feedback information further carries a reason for rejection.

Alternatively, in S220, if the slice information of the network slice requested by the base station relates to the secret information of the terminal device, the AMF entity, the SMF entity or the UDM entity rejects to provide the slice information of the network slice registered or supported by the terminal device to the base station. Or if the terminal device registered or supported network slice is a network slice common to the base station and another base station, the AMF entity, the SMF entity or the UDM entity refuses to provide the base station with slice information of the terminal device registered or supported network slice.

Fig. 4 illustrates a method of wireless communication according to another specific embodiment of the present application, as illustrated in fig. 4, the method 300 comprising:

s310, the base station 1 determines that the terminal device is handed over from the base station 1 to the base station 2.

S320, the base station 1 sends the slice information of the network slice registered by the terminal device to the base station 2.

Or alternatively, the method 300 comprises:

s330, the base station 2 sends the request information to the base station 1.

The request information transmitted by the base station 2 to the base station 1 in S330 is used to request the base station 1 for slice information of a network slice in which the terminal device has registered.

S340, the base station 1 sends feedback information to the base station 2.

In S340, the base station 1 provides the base station with slice information of the network slice registered by the terminal device through the feedback information to the base station 1.

Fig. 5 illustrates a method of wireless communication according to another particular embodiment of the present application. As shown in fig. 5, the method 400 includes:

s410, the terminal equipment enters Idle state or Inactive state on the base station 1.

Specifically, in S410, the identifier of the serving cell is recorded before the terminal device enters the Idle state or the Inactive state, and then the terminal device enters the Idle state or the Inactive state.

Optionally, the identity of the serving cell is ECGI.

S420, the terminal device moves from the base station 1 to the base station 2 and initiates a service.

Specifically, in S420, the terminal device reports the identifier of the serving cell and the identifier of the terminal device to the base station 2. The identity of the terminal device may be, for example, a recovery ID or a Cell Radio network temporary identity (C-RNTI).

Optionally, the terminal device carries the identifier of the serving cell and the identifier of the terminal device in Msg3 or Msg5 during RRC connection. Or the terminal device carries the identifier of the serving cell and the identifier of the terminal device in the dedicated signaling of the terminal device.

S430, the base station 2 sends the request information to the base station 1.

Specifically, in S430, the base station 2 may determine slice information of the network slice that is requested to be registered by the base station 1 according to the information reported by the terminal device.

Alternatively, the interface between the base station 2 and the base station 1 may be one of the following: an X2 interface, an Xn interface, an S1 interface, and an NG interface.

S440, the base station 1 sends feedback information to the base station 2.

Specifically, in S440, the base station 1 provides the slice information of the network slice registered by the terminal device to the base station 2 through the feedback information.

Fig. 6 is a method of wireless communication according to yet another embodiment of the present application. As shown in fig. 6, the method 500 includes:

s510, the base station determines network congestion.

It should be noted that, in the method 500, the base station stores the network slices supported by the base station and the associated frequency list of the network slices.

S520, the base station determines the priority redirection network slice of the terminal equipment.

Specifically, in S520, the base station determines the preferential redirection network slice of the terminal device according to the network slice supported by the base station and the network slice registered by the terminal device.

Optionally, in S520, if the network slices supported by the base station include the network slices registered by the terminal device, the base station determines that the preferentially redirected network slice of the terminal device is one of the network slices registered by the terminal device.

Optionally, in S520, if the network slice supported by the base station does not include the network slice registered by the terminal device, the base station obtains slice information of the network slice supported by the terminal device, and determines that the preferentially redirected network slice of the terminal device is one of the network slices supported by the terminal device.

Optionally, in S520, when the base station determines the priority redirection network slice of the terminal device, the base station may determine a network slice to which the terminal device frequently redirects as the priority redirection network slice of the terminal device, or determine a network slice with a higher frequency of providing services for the terminal device as the priority redirection network slice, or determine the most idle network slice as the priority redirection network slice.

It should be noted that, in S520, the base station obtains slice information of a network slice supported by the terminal device, which is the same as in the method 100, and is not described herein again.

S530, the base station sends redirection information to the terminal equipment.

Optionally, in S530, the redirection information includes slice information of the preferentially redirected network slice, information of a cell corresponding to the preferentially redirected network slice, frequency information of the preferentially redirected network slice, and a RAT supported by the preferentially redirected network slice.

S540, the terminal device redirects to the preferred redirection network slice.

It should be noted that, the redirection of the terminal device to the preferential redirection network slice may be understood as the redirection of the terminal device to the frequency corresponding to the preferential redirection network slice.

S550, the base station determines the network slice which is preferentially resided in the terminal equipment.

Specifically, in S550, if the base station desires the terminal device to release the connection, the base station needs to instruct the terminal device to perform the camping network slice, and thus the base station needs to determine the preferred camping network slice of the terminal device.

Optionally, in S550, if the network slices supported by the base station include the network slices registered by the terminal device, the base station determines that the network slice preferentially camped by the terminal device is one of the network slices registered by the terminal device.

Optionally, in S550, if the network slice supported by the base station does not include the network slice registered by the terminal device, the base station acquires slice information of the network slice supported by the terminal device, and determines that the network slice preferentially camped by the terminal device is one of the network slices supported by the terminal device.

Optionally, in S550, when the base station determines the network slice preferred to camp on the terminal device, the base station may determine the network slice frequently camped on the terminal device as the network slice preferred to camp on the terminal device, or determine the network slice with a higher frequency of serving the terminal device as the network slice preferred to camp on, or determine the network slice that is the most idle network slice as the network slice preferred to camp on.

S560, the base station sends connection release information to the terminal device.

Specifically, in S560, the connection release information is used to instruct the terminal device to release the connection with the base station and camp on the preferred camping network slice.

Optionally, in S560, the connection release information includes slice information of the network slice to be camped preferentially, information of a cell corresponding to the network slice to be camped preferentially, frequency information of the network slice to be camped preferentially, and a RAT supported by the network slice to be camped preferentially.

S570, the terminal device releases the connection with the base station and resides on the priority network slice.

It should be noted that, the terminal device residing in the network slice where the terminal device resides may be understood as the terminal device residing in the cell corresponding to the network slice where the terminal device resides.

Fig. 7 is a method of wireless communication according to another embodiment of the present application. It is to be understood that the interaction of the second network device with the first network device described from the second network device side is the same as that described for the first network device side, and the related description is appropriately omitted to avoid redundancy. As shown in fig. 7, the method 600 includes:

s610, the second network equipment determines whether the terminal equipment is switched to the first network equipment from the second network equipment;

s620, when the second network device determines that the terminal device is switched from the second network device to the first network device, sending slice information of a target network slice to the first network device, where the target network slice includes a first network slice, and the first network slice is a network slice registered by the terminal device.

Optionally, as an embodiment, the method 600 further includes: receiving third request information sent by the first network device, where the third request information is used to request the second network device for slice information of the first network slice.

Fig. 8 is a method of wireless communication according to yet another embodiment of the present application. It is to be understood that the interaction of the first network device and the terminal device described from the terminal device side is the same as that described in the first network device side, and the related description is appropriately omitted to avoid redundancy. As shown in fig. 8, method 700 includes:

s710, a terminal device records an identifier of a serving cell, wherein the serving cell is a cell which provides service for the terminal device before the terminal device enters an idle state or an idle state in a cell of a second network device;

s720, when the terminal device enters an idle state or an idle state and is switched from the second network device to the first network device, sending reporting information to the first network device, where the reporting information includes an identifier of the serving cell and an identifier of the terminal device.

Optionally, as an embodiment, S720 specifically includes:

sending a message 3 to the first network device, wherein the message 3 comprises the report information; or, sending a message 5 to the first network device, where the message 5 includes the report information; or, sending a dedicated signaling to the first network device, where the dedicated signaling includes the reporting information.

Fig. 9 is a method of wireless communication according to yet another embodiment of the present application. It is to be understood that the interaction of the first network device and the terminal device described from the terminal device side is the same as that described in the first network device side, and the related description is appropriately omitted to avoid redundancy. As shown in fig. 9, method 800 includes:

s810, the terminal device receives indication information sent by the first network device, where the indication information includes at least one of the following information: slice information of the priority network slice, information of a cell corresponding to the priority network slice, frequency information of the priority network slice, and a Radio Access Technology (RAT) supported by the priority network slice, wherein the priority network slice comprises a priority redirection network slice or a priority residence network slice;

s820, redirecting to the priority network slice or residing in the cell corresponding to the priority network slice according to the indication information;

Optionally, as an embodiment, the number of times that the prioritized network slice provides services for the terminal device is greater than or equal to a first preset threshold; or, the frequency of the priority network slice providing service for the terminal equipment is greater than or equal to a second preset threshold; or, the number of loads of the priority network slice service is less than or equal to a third preset threshold.

The method of wireless communication according to an embodiment of the present invention is described in detail above with reference to fig. 1 to 9, and a network device according to an embodiment of the present invention will be described in detail below with reference to fig. 10.

Fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in fig. 10, the network device 10 includes:

the processing module 11 is configured to determine whether to acquire slice information of a target network slice, where the target network slice includes a first network slice and/or a second network slice, the first network slice is a network slice registered by a terminal device, and the second network slice is a network slice supported by the terminal device;

a transceiver module 12, configured to execute a related operation of acquiring the slice information of the target network slice when the first processing module determines to acquire the slice information of the target network slice.

According to the embodiment of the invention, when determining to acquire the slice information of the network slice registered by the terminal device and/or the slice information of the network slice supported by the terminal device, the network device can execute the relevant operation of acquiring the slice information of the network slice, so as to realize the acquisition of the slice information of the network slice, and further, the network device can redirect the terminal device or enable the terminal device to reside on the appropriate network slice according to the acquired slice information of the network slice.

Optionally, as an embodiment, the processing module 11 is further configured to:

and determining the priority network slice of the terminal equipment according to the network slice supported by the network equipment and the target network slice, wherein the priority network slice comprises a priority redirection network slice or a priority residence network slice.

Optionally, as an embodiment, the target network slice includes the first network slice;

wherein the transceiver module 12 is specifically configured to:

sending first request information to a connection and mobility management entity AMF or a session management entity SMF, wherein the first request information comprises an identifier of the terminal equipment, and the first request information is used for requesting slice information of the first network slice;

optionally, as an embodiment, the transceiver module 12 is further configured to:

receiving first feedback information sent by the AMF or the SMF, wherein the first feedback information comprises slice information of the first network slice; or the like, or, alternatively,

receiving second feedback information sent by the AMF or the SMF, wherein the second feedback information is used for indicating that the AMF or the SMF refuses to provide slice information of the first network slice.

Optionally, as an embodiment, the second feedback information further includes first reason indication information, where the first reason indication information is used to indicate a reason for rejecting providing of the slice information of the first network slice.

Optionally, as an embodiment, the target network slice includes the second network slice;

wherein the transceiver module 12 is specifically configured to:

and sending second request information to a Unified Data Management (UDM) entity, wherein the second request information comprises the identifier of the terminal equipment, and the second request information is used for requesting the slice information of the second network slice.

Optionally, as an embodiment, the transceiver module 12 is further configured to: receiving third feedback information sent by the UDM entity, wherein the third feedback information comprises slice information of the second network slice; or the like, or, alternatively,

receiving fourth feedback information sent by the UDM entity, wherein the fourth feedback information is used for indicating that slice information of the second network slice is refused to be provided.

Optionally, as an embodiment, the fourth feedback information further includes second reason indication information, where the second reason indication information is used to indicate a reason for rejecting providing the slice information of the second network slice.

Optionally, as an embodiment, the target network slice includes the first network slice, and the processing module 11 is further configured to:

determining that the terminal device is switched from a second network device to the network device;

wherein the transceiver module 12 is specifically configured to:

receiving slice information of the first network slice sent by the second network device.

Optionally, as an embodiment, before receiving the slice information of the first network slice sent by the second network device, the transceiver module 12 is further configured to:

and sending third request information to the second network equipment, wherein the third request information is used for requesting the second network equipment for the slice information of the first network slice.

receiving reporting information sent by the terminal equipment, wherein the reporting information comprises an identifier of a serving cell and an identifier of the terminal equipment, and the serving cell is a cell which provides service for the terminal equipment before the terminal equipment enters an idle state or an idle state in a cell of the second network equipment;

and determining the third request information according to the report information.

Optionally, as an embodiment, the transceiver module 12 is specifically configured to:

receiving a message 3 sent by the terminal equipment, wherein the message 3 comprises the report information; or the like, or, alternatively,

receiving a message 5 sent by the terminal equipment, wherein the message 5 comprises the report information; or the like, or, alternatively,

and receiving a special signaling sent by the terminal equipment, wherein the special signaling comprises the report information.

determining a priority network slice of the terminal device according to the network slice supported by the network device, the target network slice and a target parameter, wherein the target parameter is at least one of the following parameters: the number of times of providing services to the terminal device, the frequency of providing services to the terminal device, and the number of loads of the services.

Optionally, as an embodiment, the processing module 11 is specifically configured to:

when it is determined that the network slices supported by the network device include at least one of the first network slices, determining a priority network slice of the terminal device according to the at least one first network slice and the target parameter, where the priority network slice is one of the at least one first network slice.

when determining that the network slices supported by the network equipment do not include the first network slice, determining a priority network slice of the terminal equipment according to the second network slice and the target parameter, wherein the priority network slice is one of the second network slices.

Optionally, as an embodiment, the number of times that the prioritized network slice provides services for the terminal device is greater than or equal to a first preset threshold; or the like, or, alternatively,

the frequency of the priority network slice for providing service for the terminal equipment is greater than or equal to a second preset threshold; or the like, or, alternatively,

the number of loads of the prioritized network slice service is less than or equal to a third preset threshold.

Optionally, as an embodiment, the transceiver module is further configured to, by the network device:

sending indication information to the terminal equipment, wherein the indication information comprises at least one of the following information: slice information of the priority network slice, information of a cell corresponding to the priority network slice, frequency information of the priority network slice, and a Radio Access Technology (RAT) supported by the priority network slice.

The network device according to the embodiment of the present invention may refer to the flow corresponding to the method 100 according to the embodiment of the present invention, and each unit/module and the other operations and/or functions in the network device are respectively for implementing the corresponding flow in the method 100, and are not described herein again for brevity.

Fig. 11 is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown in fig. 11, the network device 20 includes:

a processing module 21, configured to determine whether a terminal device is switched from the network device to a first network device;

a transceiver module 22, configured to send slice information of a target network slice to the first network device when the network device determines that the terminal device is switched from the network device to the first network device, where the target network slice includes a first network slice, and the first network slice is a network slice registered by the terminal device.

According to the network device of the embodiment of the invention, when the terminal device is determined to be switched to the first network device, the slice information of the network slice registered by the terminal device is sent to the first network device, so that the first network device can redirect the terminal device according to the obtained slice information of the network slice or enable the terminal device to reside on the appropriate network slice.

Optionally, as an embodiment, the transceiver module 22 is further configured to:

and receiving third request information sent by the first network device, wherein the third request information is used for requesting the network device for the slice information of the first network slice.

The network device according to the embodiment of the present invention may refer to the flow corresponding to the method 600 of the embodiment of the present invention, and each unit/module and the other operations and/or functions in the network device are respectively for implementing the corresponding flow in the method 600, and are not described herein again for brevity.

Fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 12, the terminal device 30 includes:

a processing module 31, configured to record an identifier of a serving cell, where the serving cell is a cell that provides service for the terminal device before the terminal device enters an idle state or an idle state in a cell of a second network device;

a transceiver module 32, configured to send reporting information to a first network device when the terminal device enters an idle state or an idle state and is switched from the second network device to the first network device, where the reporting information includes an identifier of the serving cell and an identifier of the terminal device.

According to the terminal device of the embodiment of the invention, the identifier of the serving cell is recorded before the terminal device enters the idle state or the idle state, and when the terminal device enters the idle state or the idle state and is switched from the second network device to the first network device, the identifier of the serving cell and the identifier of the terminal device are reported to the first network device, so that the first network device can obtain the slice information of the network slice registered by the terminal device according to the identifier of the serving cell and the identifier of the terminal device, and the first network device can redirect the terminal device or enable the terminal device to reside on the appropriate network slice according to the obtained slice information of the network slice.

Optionally, as an embodiment, the transceiver module is specifically configured to:

sending a message 3 to the first network device, wherein the message 3 comprises the report information; or the like, or, alternatively,

sending a message 5 to the first network device, wherein the message 5 comprises the report information; or the like, or, alternatively,

and sending a special signaling to the first network equipment, wherein the special signaling comprises the reporting information.

The terminal device according to the embodiment of the present invention may refer to the flow corresponding to the method 700 of the embodiment of the present invention, and each unit/module and the other operations and/or functions in the terminal device are respectively for implementing the corresponding flow in the method 700, and for brevity, no further description is provided here.

Fig. 13 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 13, the terminal device 40 includes:

the transceiver module 41 is configured to receive indication information sent by the first network device, where the indication information includes at least one of the following information: slice information of the priority network slice, information of a cell corresponding to the priority network slice, frequency information of the priority network slice, and a Radio Access Technology (RAT) supported by the priority network slice, wherein the priority network slice comprises a priority redirection network slice or a priority residence network slice;

a processing module 42, configured to redirect to the preferred network slice or reside in a cell corresponding to the preferred network slice according to the indication information;

According to the embodiment of the invention, after receiving the indication information sent by the first network device, the terminal device redirects to the cell corresponding to the preferentially redirected network slice or the preferentially resided network slice according to the indication of the indication information, and because the first network device determines according to the network slice supported by the first network device and the network slice registered by the terminal device or the network slice supported by the terminal device during the indication information, the terminal device can redirect or reside to a proper network slice.

The terminal device according to the embodiment of the present invention may refer to the flow corresponding to the method 800 of the embodiment of the present invention, and each unit/module and the other operations and/or functions in the terminal device are respectively for implementing the corresponding flow in the method 800, and for brevity, no further description is provided here.

Fig. 14 shows a schematic structural diagram of a network device according to another embodiment of the present invention. As shown in fig. 14, the network device 100 includes a processor 110, a transceiver 120, a memory 130, and a bus interface. Wherein:

in this embodiment of the present invention, the network device 100 further includes: a computer program stored in the memory 130 and capable of running on the processor 110, where the computer program, when executed by the processor 110, implements the processes in the

methods

100 and 600, and can achieve the same technical effect, and is not described herein again to avoid repetition.

In FIG. 14, the bus architecture may include any number of interconnected buses and bridges, with various circuits linking together one or more processors, represented by processor 110, and memory, represented by memory 130. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 120 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 110 is responsible for managing the bus architecture and general processing, and the memory 130 may store data used by the processor 110 in performing operations.

Fig. 15 shows a schematic structural diagram of a terminal device according to another embodiment of the present invention, and as shown in fig. 15, the terminal device 200 includes: at least one processor 210, memory 220, at least one network interface 230, and a user interface 240. The various components in the receiving end device 200 are coupled together by a bus system 250. It will be appreciated that the bus system 250 is used to enable communications among the components. The bus system 250 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 250 in FIG. 15.

The user interface 240 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It will be appreciated that memory 220 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (ddr SDRAM ), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct memory bus RAM (DRRAM). The memory 220 of the subject systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 220 stores elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 221 and application programs 222.

The operating system 221 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 222 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing a method according to an embodiment of the invention may be included in the application 222.

In this embodiment of the present invention, the terminal device 200 further includes: a computer program stored on the memory 220 and capable of running on the processor 210, wherein the computer program, when executed by the processor 210, implements the processes of the

methods

700 and 800, and can achieve the same technical effects, and therefore, in order to avoid repetition, the details are not described herein again.

The method disclosed in the above embodiments of the present invention may be applied to the processor 210, or implemented by the processor 210. The processor 210 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 210. The Processor 210 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 220, and the processor 210 reads the information in the memory 220 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer-readable storage medium has stored thereon a computer program which, when executed by the processor 210, implements the steps of the method embodiments as in the method 200 described above.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the

methods

100 and 200, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

The embodiment of the present invention also provides a computer program product including instructions, and when a computer executes the instructions of the computer program product, the computer executes the method for wireless communication of the above method embodiment. In particular, the computer program product may be run on the network device and the terminal device described above.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, comprising:

when the first network equipment determines to acquire the slice information of the target network slice, executing related operation of acquiring the slice information of the target network slice;

wherein the content of the first and second substances,

the target network slice comprises the first network slice, and the performing the related operation of obtaining slice information of the target network slice comprises: sending first request information to a connection and mobility management entity AMF or a session management entity SMF, wherein the first request information comprises an identifier of the terminal equipment, and the first request information is used for requesting slice information of the first network slice; receiving first feedback information or second feedback information sent by the AMF or the SMF, wherein the first feedback information comprises slice information of the first network slice, and the second feedback information is used for indicating that the AMF or the SMF refuses to provide the slice information of the first network slice; alternatively, the first and second electrodes may be,

the target network slice comprises the second network slice; the executing the relevant operation of obtaining the slice information of the target network slice comprises: sending second request information to a Unified Data Management (UDM) entity, wherein the second request information comprises an identifier of the terminal equipment, and the second request information is used for requesting slice information of the second network slice; receiving third feedback information or fourth feedback information sent by the UDM entity, wherein the third feedback information comprises slice information of the second network slice, and the fourth feedback information is used for indicating that slice information of the second network slice is refused to be provided; alternatively, the first and second electrodes may be,

the target network slice comprises the first network slice, the method further comprising: determining that the terminal device is switched from a second network device to the first network device; the executing the relevant operation of obtaining the slice information of the target network slice comprises: receiving slice information of the first network slice sent by the second network device.

2. The method of claim 1, further comprising:

and determining the priority network slice of the terminal equipment according to the network slice supported by the first network equipment and the target network slice, wherein the priority network slice comprises a priority redirection network slice or a priority residence network slice.

3. The method according to claim 1 or 2, wherein the second feedback information further comprises first reason indication information indicating a reason for rejecting providing the slice information of the first network slice.

4. The method according to claim 1 or 2, wherein the fourth feedback information further comprises second reason indication information indicating a reason for rejecting providing the slice information of the second network slice.

5. The method according to claim 1 or 2, wherein before receiving the slice information of the first network slice sent by the second network device, further comprising:

6. The method of claim 5, further comprising:

7. The method of claim 6, wherein the receiving the report information sent by the terminal device comprises:

8. The method of claim 2, wherein the determining the priority network slice of the terminal device according to the network slices supported by the first network device and the target network slice comprises:

determining a priority network slice of the terminal device according to the network slice supported by the first network device, the target network slice and a target parameter, wherein the target parameter is at least one of the following parameters: the number of times of providing services to the terminal device, the frequency of providing services to the terminal device, and the number of loads of the services.

9. The method of claim 8, wherein the determining the priority network slice of the terminal device according to the network slices supported by the network device, the target network slice and the target parameter comprises:

when it is determined that the network slices supported by the first network device include at least one of the first network slices, determining a priority network slice of the terminal device according to the at least one first network slice and the target parameter, where the priority network slice is one of the at least one first network slice.

10. The method of claim 8, wherein the determining the priority network slice of the terminal device according to the network slices supported by the network device, the target network slice and the target parameter comprises:

when it is determined that the first network slice is not included in the network slices supported by the first network device, determining a priority network slice of the terminal device according to the second network slice and the target parameter, wherein the priority network slice is one of the second network slices.

11. The method according to any one of claims 8 to 10,

the frequency of the priority network slice providing service for the terminal equipment is greater than or equal to a first preset threshold value; or the like, or, alternatively,

12. A method according to any of claims 8-10, further characterized in that the method further comprises:

13. A method of wireless communication, comprising:

when the second network device determines that the terminal device is switched from the second network device to the first network device, sending slice information of a target network slice to the first network device, where the target network slice includes a first network slice, and the first network slice is a network slice registered by the terminal device.

14. The method of claim 13, further comprising:

receiving third request information sent by the first network device, where the third request information is used to request the second network device for slice information of the first network slice.

15. A method of wireless communication, comprising:

the terminal equipment receives indication information sent by first network equipment, wherein the indication information comprises at least one of the following information: slice information of a priority network slice, information of a cell corresponding to the priority network slice, frequency information of the priority network slice, and a Radio Access Technology (RAT) supported by the priority network slice, wherein the priority network slice comprises a priority redirection network slice or a priority residence network slice;

16. The method of claim 15,

17. A network device, comprising:

the receiving and sending module is used for executing relevant operation of obtaining the slice information of the target network slice when the processing module determines to obtain the slice information of the target network slice;

wherein the target network slice comprises the first network slice; the transceiver module is specifically configured to: sending first request information to a connection and mobility management entity AMF or a session management entity SMF, wherein the first request information comprises an identifier of the terminal equipment, and the first request information is used for requesting slice information of the first network slice; the transceiver module is further configured to: receiving first feedback information or second feedback information sent by the AMF or the SMF, wherein the first feedback information comprises slice information of the first network slice, and the second feedback information is used for indicating that the AMF or the SMF refuses to provide the slice information of the first network slice; alternatively, the first and second electrodes may be,

the target network slice comprises the second network slice; the transceiver module is specifically configured to: sending second request information to a Unified Data Management (UDM) entity, wherein the second request information comprises an identifier of the terminal equipment, and the second request information is used for requesting slice information of the second network slice; the transceiver module is further configured to: receiving third feedback information or fourth feedback information sent by the UDM entity, wherein the third feedback information comprises slice information of the second network slice, and the fourth feedback information is used for indicating that slice information of the second network slice is refused to be provided; alternatively, the first and second electrodes may be,

the target network slice comprises the first network slice, the processing module is further to: determining that the terminal device is switched from a second network device to the network device; the transceiver module is specifically configured to: receiving slice information of the first network slice sent by the second network device.

18. The network device of claim 17, wherein the processing module is further configured to:

19. The network device according to claim 17 or 18, wherein the second feedback information further comprises a first reason indication information, and the first reason indication information is used to indicate a reason for rejecting providing the slice information of the first network slice.

20. The network device according to claim 17 or 18, wherein the fourth feedback information further comprises a second reason indication information indicating a reason for rejecting providing the slice information of the second network slice.

21. The network device of claim 17 or 18, wherein before receiving the slice information of the first network slice sent by the second network device, the transceiver module is further configured to:

22. The network device of claim 21, wherein the transceiver module is further configured to:

23. The network device of claim 22, wherein the transceiver module is specifically configured to:

24. The network device of claim 18, wherein the processing module is further configured to:

25. The network device of claim 24, wherein the processing module is specifically configured to:

26. The network device of claim 24, wherein the processing module is specifically configured to:

27. The network device of any one of claims 24 to 26,

28. The network device of any of claims 24-26, further characterized in that the transceiver module is further configured to:

29. A network device, comprising:

30. The network device of claim 29, wherein the transceiver module is further configured to:

31. A terminal device, comprising:

a transceiver module, configured to receive indication information sent by a first network device, where the indication information includes at least one of the following information: the method comprises the steps that the slice information of a priority network slice, the information of a cell corresponding to the priority network slice, the frequency information of the priority network slice and a Radio Access Technology (RAT) supported by the priority network slice are obtained, wherein the priority network slice comprises a priority redirection network slice or a priority residence network slice;

32. The terminal device of claim 31,

33. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method of wireless communication according to any of claims 1 to 12.

34. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method of wireless communication according to any of claims 13 to 14.

35. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method of wireless communication according to any of claims 15-16.

36. A computer-readable medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method of wireless communication according to any one of claims 1 to 12.

37. A computer-readable medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method of wireless communication according to any one of claims 13-14.

38. A computer-readable medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method of wireless communication according to any one of claims 15 to 16.