CN116963042A - Slice switching method, system and device of 5G network - Google Patents
Slice switching method, system and device of 5G network Download PDFInfo
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- 230000001960 triggered effect Effects 0.000 claims description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/34—Reselection control
- H04W36/38—Reselection control by fixed network equipment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/20—Transfer of user or subscriber data
Abstract
The application discloses a slice switching method, a system and a device of a 5G network, wherein the scheme comprises the following steps: acquiring slice subscription information of target terminal equipment, wherein the slice subscription information comprises a single network slice selection auxiliary information S-NSSAI identifier, a subscription access address and an address of a user plane function UPF corresponding to each subscription slice of the target terminal equipment; when the target terminal equipment initiates a slice channel establishment request, a first slice channel is established according to the slice subscription information and the slice channel establishment request so as to provide a first subscription slice for the target terminal equipment; the slice subscription information is sent to a first UPF corresponding to the first subscription slice; and when a slice channel switching request sent by the first UPF is received, switching the first slice channel to a second slice channel according to the slice subscription information and the slice channel switching request so as to provide a second subscription slice for the target terminal equipment.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, a system, and an apparatus for slice switching in a 5G network.
Background
In the 5G core network, a new concept of 'network slice' is introduced, the slice is composed of three parts of wireless, transmission and core networks, end-to-end differential service is formed, and differential service code points (DSCP: differentiated Services Code Point) are used for identifying different service priorities.
The network side may support the terminal device to sign up for multiple slices, however, typically, the network side provides the terminal device with a default sign up slice when the use of slices is first requested. When other applications of the terminal equipment request the slices, the network side can also distribute the slices provided to the terminal equipment before to the applications for use.
Taking terminal equipment as 5G vehicle-mounted equipment as an example, three application scene types of slicing are supported: one slice is for automatic driving, and one slice is for entertainment playing of music, video and the like; one slice is for car position location after parking. The first three application scenes are ultra-high reliability ultra-low time delay communication application scenes; the second is to enhance the mobile broadband application scenario; the third is to enhance the mobile broadband application scenario, and the requirements of three slices on the network are also from high to low. At present, the method is limited by the capability that terminal equipment does not support the automatic reporting of the slice requirements according to application scenes, and can not support the switching among different slices, and only one signed slice can be used in practical application.
Therefore, the same signed slice can be used by a plurality of applications at the same time, so that network blockage is caused, the transmission performance of the slice network is influenced, and the efficiency of slice service is reduced.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method, a system, an apparatus, and a computer readable storage medium for slicing switching in a 5G network, so as to solve the problem of low efficiency of the existing slicing service.
In order to solve the technical problems, the present specification is implemented as follows:
in a first aspect, a slice switching method of a 5G network is provided, which is applied to an access and mobility management function AMF, and the method includes:
acquiring slice subscription information of target terminal equipment, wherein the slice subscription information comprises a single network slice selection auxiliary information S-NSSAI identifier, a subscription access address and an address of a user plane function UPF corresponding to each subscription slice of the target terminal equipment;
when the target terminal equipment initiates a slice channel establishment request, a first slice channel is established according to the slice subscription information and the slice channel establishment request so as to provide a first subscription slice for the target terminal equipment;
the slice subscription information is sent to a first UPF corresponding to the first subscription slice;
and when a slice channel switching request sent by the first UPF is received, switching the first slice channel to a second slice channel according to the slice subscription information and the slice channel switching request so as to provide a second subscription slice for the target terminal equipment.
Optionally, establishing a first slice channel according to the slice subscription information and the slice channel establishment request includes:
determining the address of a first UPF corresponding to the first subscription slice according to the S-NSSAI identifier, the UPF address and the S-NSSAI identifier of the first subscription slice carried in the slice channel establishment request, which are included in the slice subscription information;
and establishing the first slicing channel according to the address of the first UPF.
Optionally, switching the first slice channel to the second slice channel according to the slice subscription information and the slice channel switching request includes:
determining the address of a second UPF corresponding to the second subscription slice according to the S-NSSAI identifier, the UPF address and the S-NSSAI identifier of the second subscription slice carried in the slice channel switching request, which are included in the slice subscription information;
establishing the second slicing channel according to the address of the second UPF;
and switching the slicing service data request of the target terminal equipment to the second slicing channel for transmission.
Optionally, after establishing the second slice channel according to the slice subscription information and the slice channel switching request, the method further includes:
and sending the slice subscription information to a second UPF corresponding to the second slice channel.
Optionally, after establishing the second slice channel according to the slice subscription information and the slice channel switching request, the method further includes:
and feeding back the address of the second UPF to the first UPF, wherein the first UPF forwards the buffer data of the slice switching request and the slice subscription information to the second UPF, which are triggered by the target terminal equipment, according to the address of the second UPF.
In a second aspect, a slice switching method of a 5G network is provided, applied to a user plane function UPF, and the method includes:
when a first slice channel is established according to a slice channel establishment request of a target terminal device, receiving slice subscription information of the target terminal device, which is sent by an AMF, wherein the slice subscription information comprises an S-NSSAI identifier of a first subscription slice corresponding to the slice channel establishment request, an S-NSSAI identifier of other subscription slices of the target terminal device, a corresponding subscription access address and an address of a UPF;
receiving a slicing service data request sent by the target terminal equipment in real time through the established first slicing channel;
and sending a slice channel switching request to the AMF according to the slice subscription information and the received slice service data request, wherein the AMF switches the slice service data request of the target terminal equipment from the first slice channel to a second slice channel corresponding to the slice channel switching request for transmission.
Optionally, according to the slice subscription information and the received slice service data request, sending a slice channel switching request to the AMF, including:
comparing an access address carried in a currently received slice service data request with a subscription access address corresponding to S-NSSAI identifiers of other subscription slices in the slice subscription information;
and when the matched subscription access address exists, sending a slice channel switching request to the AMF, wherein the slice channel switching request carries an S-NSSAI identification of a second subscription slice with the matched subscription access address.
Optionally, after sending the slice channel switching request to the AMF, the method further includes:
receiving an address of a second UPF corresponding to the second signed slice fed back by the AMF in response to the slice channel switching request;
and forwarding the cache data corresponding to the currently received slice service data request and the slice subscription information to the second UPF according to the address of the second UPF.
In a third aspect, a slice handover system for a 5G network is provided, comprising an access and mobility management function AMF and a user plane function UPF,
the AMF acquires slice subscription information of target terminal equipment, wherein the slice subscription information comprises a single network slice selection auxiliary information S-NSSAI identifier, a subscription access address and an address of UPF corresponding to each subscription slice of the target terminal equipment; when the target terminal equipment initiates a slice channel establishment request, a first slice channel is established according to the slice subscription information and the slice channel establishment request so as to provide a first subscription slice for the target terminal equipment; the slice subscription information is sent to a UPF corresponding to the first subscription slice;
the UPF receives the slice subscription information sent by the AMF; receiving a slicing service data request sent by the target terminal equipment in real time through the first slicing channel; transmitting a slice channel switching request to the AMF according to the slice subscription information and the received slice service data request;
and the AMF switches the first slicing channel to a second slicing channel according to the slicing subscription information and the slicing channel switching request so as to provide a second subscription slice for the target terminal equipment.
In a fourth aspect, there is provided a slice switching device for a 5G network comprising a memory and a processor electrically connected to the memory, the memory storing a computer program executable by the processor to perform the steps of the method according to the first or second aspect when executed by the processor.
In a fifth aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to the first or second aspect.
In the embodiment of the application, the signing information of the slices signed on the UDM comprises different slice identifiers, and the signing access addresses associated with the different slice identifiers are added to serve as triggering conditions for slice switching, and the network side controls and verifies the slice application scenes, so that the terminal equipment can support the automatic reporting of the slice requirements of different application scenes and the capability of supporting switching among different slices. The application of different application scenes of the same terminal equipment uses the slices of the subscription corresponding types, so that network congestion caused by the fact that different scene subscription slices use the same slice channel can be avoided, and the slice service efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is an application scenario architecture diagram of a slice switching method of a 5G network according to an embodiment of the present application.
Fig. 2 is a flow chart of a slice switching method of a 5G network according to a first embodiment of the present application.
Fig. 3 is a flow chart of a slice switching method of a 5G network according to a second embodiment of the present application.
Fig. 4 is a block diagram illustrating a structure of a slice switching system of a 5G network according to an embodiment of the present application.
Fig. 5 is an overall flowchart of a slice switching method of a 5G network according to an embodiment of the present application.
Fig. 6 is a block diagram showing the structure of a slice switching apparatus according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. The reference numerals in the present application are only used for distinguishing the steps in the scheme, and are not used for limiting the execution sequence of the steps, and the specific execution sequence controls the description in the specification.
In order to solve the problems in the prior art, the embodiment of the application provides a slice switching method of a 5G network.
Before describing the slice switching method of the 5G network according to the embodiment of the present application, an application scenario of the slice switching method of the 5G network according to the embodiment of the present application is described with reference to fig. 1.
As shown in fig. 1, the network element on the 5G core network side includes a network slice selection function (Network Slice Selection Function, NSSF), a network storage function (NF Repository Function, NRF), a unified data management function (Unified Data Management, UDM), an access and mobility management function (Access and Mobility ManagementFunction, AMF), a Session management function (Session ManagementFunction, SMF), and the terminal side includes a 5G terminal device, a 5G base station, and a user plane function (User plane Function, UPF).
In the embodiment of the application, the slice switching method mainly relates to UDM, AMF, SMF and UPF, and is described below.
Referring now to fig. 2, fig. 2 is a flow chart illustrating a slice switching method of a 5G network according to a first embodiment of the present application. In this embodiment, the slice switching method is applied to the AMF of fig. 1.
As shown in fig. 2, the following steps 102 to 108 are included.
Step 102, obtaining slice subscription information of a target terminal device, wherein the slice subscription information includes a single network slice selection auxiliary information S-nsai identifier, a subscription access address and an address of a user plane function UPF corresponding to each subscription slice of the target terminal device.
The slice subscription information may be obtained from a UDM, which is responsible for handling the registration subscription procedure of the terminal device. The UDM end stores slice subscription information corresponding to the terminal device after initiating the registration procedure, where the slice subscription information includes a single network slice selection auxiliary information (Single Network Slice Selection AssistanceInformation, S-NSSAI) identifier, a subscription access address, an address of the UPF, an address of the SMF, and the like corresponding to each subscription slice of the target terminal device.
When the terminal device requests to sign up a certain slice, a first data packet corresponding to the sign up request is attached with a server access address corresponding to the request to use the slice, namely, a sign up access address.
For example, if the terminal device requests to sign up for 3 slices, a one-to-one mapping relationship can be established according to the sign-up access address and the S-nsai identifier of the sign-up slice in each sign-up request: the S-NSSAI of slice 1 is identified as 10000001, and the corresponding subscription access address is http:// www.1.com; the S-NSSAI of slice 2 is identified as 20000002, and the corresponding subscription access address is http:// www.2.com; the S-NSSAI for slice 3 is identified as 30000003 and the corresponding subscription access address is http:// www.
The subscription access address is also a trigger condition for the slice switching of the present application, after the slice channel of the subsequent corresponding slice is established, if the terminal device requests access to the corresponding server address by using the slice channel, if the server address requesting access is inconsistent with the subscription access address, the current subscription slice is triggered to be switched to another subscription slice, and the description will be developed later.
Step 104, when the target terminal equipment initiates a slice channel establishment request, a first slice channel is established according to the slice subscription information and the slice channel establishment request, so as to provide a first subscription slice for the target terminal equipment.
The slice channel establishment request is a signaling level request, which may be called a protocol data unit (Protocol Data Unit, PDU) session establishment request.
Optionally, establishing a first slice channel according to the slice subscription information and the slice channel establishment request includes: determining the address of a first UPF corresponding to the first subscription slice according to the S-NSSAI identifier, the UPF address and the S-NSSAI identifier of the first subscription slice carried in the slice channel establishment request, which are included in the slice subscription information; and establishing the first slicing channel according to the address of the first UPF.
The S-NSSAI identification of the requested subscription slice is carried in the slice channel establishment request initiated by the target terminal equipment, so that the AMF can compare the S-NSSAI identification with the slice subscription information of the terminal equipment acquired from the UDM end, find the address and the SMF address of the UPF corresponding to the S-NSSAI identification, thereby establishing a slice channel, and the UPF provides the subscription slice corresponding to the S-NSSAI identification for the target terminal equipment and provides the corresponding slice service for the target terminal equipment.
And step 106, the slice subscription information is sent to a first UPF corresponding to the first subscription slice.
Specifically, the AMF selects a corresponding SMF according to the information such as the S-NSSAI identifier reported by the target terminal equipment, the AMF sends the corresponding signaling message to the SMF, and the SMF selects a corresponding UPF according to the information such as the S-NNSAI identifier of the target terminal equipment, and sends the corresponding signaling message to the UPF.
In the two signaling messages, the AMF sends the subscription information of the subscription slice corresponding to the currently used S-nsai identifier to the UPF, and also sends the slice subscription information of other subscription slices of the target terminal device to the UPF.
Taking the above example, the terminal device signs up for 3 slices altogether, and the terminal device reports the slice with S-nsai identified as 10000001, whereas the AMF would send two other slices: slice subscription information for the slices identified by S-nsai as 20000002 and 30000003 is sent to both SMF and UPF.
Thus, the UPF end that currently provides the subscription slice for the target terminal device stores slice subscription information of all subscription slices of the target terminal device.
And step 108, when a slice channel switching request sent by the first UPF is received, switching the first slice channel to a second slice channel according to the slice subscription information and the slice channel switching request so as to provide a second subscription slice for the target terminal.
Optionally, switching the first slice channel to the second slice channel according to the slice subscription information and the slice channel switching request includes:
determining the address of a second UPF corresponding to the second subscription slice according to the S-NSSAI identifier, the UPF address and the S-NSSAI identifier of the second subscription slice carried in the slice channel switching request, which are included in the slice subscription information;
establishing the second slicing channel according to the address of the second UPF;
and switching the slicing service data request of the target terminal equipment to the second slicing channel for transmission.
After judging that the target terminal equipment side initiates a slicing request, the first UPF which currently provides the signed slice for the target terminal equipment sends a slicing channel switching request to the AMF so as to respond to the slicing request of the target terminal equipment, and requests the AMF to establish a slicing channel of a new slice to provide slicing service for the target terminal equipment.
The first UPF may determine, according to a slice service data request sent by the target terminal device through a slice channel, whether the target terminal device initiates a slice channel switching request, and under normal circumstances, after the first slice channel is established for the target terminal device, the target terminal device will send a corresponding slice service data request through the slice channel, to request access to a server address bound during subscription, that is, a subscription access address.
And if the target access address carried in the slice service data request currently sent by the target terminal equipment is not the contracted access address, indicating that the terminal equipment currently hopes to request to access the server corresponding to the target access address. At this time, the first UPF may search for which of the subscription access addresses corresponding to the target access address is from the slice subscription information of all the subscription slices of the target terminal, so as to be associated with the second subscription slice corresponding to the subscription access address.
The first UPF sends a slice channel switching request to the AMF, the slice channel switching request carries an S-NSSAI identifier of a second signed slice requested to be switched by the terminal equipment, the AMF compares the S-NSSAI identifier of the second signed slice carried in the slice channel switching request with slice subscription information of the target terminal equipment, and an address of the second UPF corresponding to the S-NSSAI identifier of the second signed slice can be found, so that a second slice channel is established according to the address of the second UPF to transmit a slice service data request of the target terminal equipment to the second UPF, the second UPF provides slice service for the target terminal equipment, and a current access server of the target terminal equipment is switched from the first signed slice to the second signed slice.
It should be noted that if the target terminal device sends slice service data requests carrying different access addresses at the same time, a plurality of slice channels will be established at the same time, and each slice channel transmits a corresponding slice service data request.
In order to facilitate the subsequent judgment of the switched second UPF whether the terminal device providing the slicing service further requests the slicing channel switching, the slicing subscription information of all the subscription slices of the terminal device may be sent to the second UPF.
In one embodiment, optionally, after establishing the second slice channel according to the slice subscription information and the slice channel switching request, the method further includes: and sending the slice subscription information to a second UPF corresponding to the second slice channel.
In this embodiment, the AMF may send the slice subscription information to the second UPF through the corresponding SMF.
In another embodiment, after establishing the second slice channel according to the slice subscription information and the slice channel switching request, the method further includes:
and feeding back the address of the second UPF to the first UPF, wherein the first UPF forwards the buffer data of the slice switching request and the slice subscription information to the second UPF, which are triggered by the target terminal equipment, according to the address of the second UPF.
The different UPFs may be directly interfaced, in which embodiment the first UPF may forward the slice subscription data directly to the second UPF. In addition, in order to ensure the service integrity of the signed slice after the handover, the first UPF may further cache the data packet that determines that the terminal device triggers the slice handover request, and send the corresponding cached data to the second UPF after the handover.
In the embodiment of the application, the signing information of the slices signed on the UDM comprises different slice identifiers, and the signing access addresses associated with the different slice identifiers are added to serve as triggering conditions for slice switching, and the network side controls and verifies the slice application scenes, so that the terminal equipment can support the automatic reporting of the slice requirements of different application scenes and the capability of supporting switching among different slices. The application of different application scenes of the same terminal equipment uses the slices of the subscription corresponding types, so that network congestion caused by the fact that different scene subscription slices use the same slice channel can be avoided, and the slice service efficiency is improved.
Fig. 3 is a flow chart of a slice switching method of a 5G network according to a second embodiment of the present application, in which the slice switching method is applied to a user plane function UPF.
As shown in fig. 3, the method includes:
step 202, receiving slice subscription information of a target terminal device sent by an AMF when a first slice channel is established according to a slice channel establishment request of the target terminal device, wherein the slice subscription information comprises an S-nsai identifier of a first subscription slice corresponding to the slice channel establishment request, S-nsai identifiers of other subscription slices of the target terminal device, a corresponding subscription access address, and an address of a UPF;
step 204, receiving a slicing service data request sent by the target terminal device in real time through the established first slicing channel;
and step 206, according to the slice subscription information and the received slice service data request, sending a slice channel switching request to the AMF, wherein the AMF switches the slice service data request of the target terminal equipment from the first slice channel to a second slice channel corresponding to the slice channel switching request for transmission.
Optionally, according to the slice subscription information and the received slice service data request, sending a slice channel switching request to the AMF, including:
comparing an access address carried in a currently received slice service data request with a subscription access address corresponding to S-NSSAI identifiers of other subscription slices in the slice subscription information;
and when the matched subscription access address exists, sending a slice channel switching request to the AMF, wherein the slice channel switching request carries an S-NSSAI identification of a second subscription slice with the matched subscription access address.
Optionally, after sending the slice channel switching request to the AMF, the method further includes:
receiving an address of a second UPF corresponding to the second signed slice fed back by the AMF in response to the slice channel switching request;
and forwarding the cache data corresponding to the currently received slice service data request and the slice subscription information to the second UPF according to the address of the second UPF.
In an embodiment of the present application, a slice switching system of a 5G network is further provided, and fig. 4 is a structural block diagram of the slice switching system of the 5G network according to the embodiment of the present application.
As shown in fig. 4, the system 1000 includes an AMF1200 and a UPF1400.
The AMF1200 obtains slice subscription information of a target terminal device, where the slice subscription information includes a single network slice selection auxiliary information S-nsai identifier, a subscription access address, and an address of a UPF corresponding to each subscription slice of the target terminal device; when the target terminal equipment initiates a slice channel establishment request, a first slice channel is established according to the slice subscription information and the slice channel establishment request so as to provide a first subscription slice for the target terminal equipment; the slice subscription information is sent to a UPF corresponding to the first subscription slice;
the UPF1400 receives the slice subscription information sent by the AMF; receiving a slicing service data request sent by the target terminal equipment in real time through the first slicing channel; transmitting a slice channel switching request to the AMF according to the slice subscription information and the received slice service data request;
and the AMF1200 switches the first slice channel to a second slice channel according to the slice subscription information and the slice channel switching request, so as to provide a second subscription slice for the target terminal device.
The AMF and the UPF in the slice switching system provided in the embodiments of the present disclosure can implement each process correspondingly implemented by the AMF and the UPF in the method embodiments of fig. 2 to 3, and in order to avoid repetition, a detailed description is omitted here.
Next, an overall flow of a slice switching method of a 5G network according to an embodiment of the present application will be described with reference to fig. 5, and fig. 5 is a schematic overall flow of the slice switching method of the 5G network according to an embodiment of the present application.
As shown in fig. 5, the method comprises the following steps:
step 1: and the AMF initiates a request to the UDM when the target terminal is registered, and acquires subscription data comprising slice subscription information.
Step 2: the UDM feeds back the subscription data of the terminal to the AMF, and the slice subscription information comprises S-NSSAI identifiers of all subscription slice types and simultaneously newly increases the slice switching triggering conditions of the corresponding subscription access addresses.
Step 3: the AMF selects the SMF to transmit the subscription data, and sends the S-NSSAI identification and triggering conditions of other subscription slice types of the terminal besides the slice used at the time to the SMF.
Step 4: the SMF will transparently pass the subscription data passed by the AMF to the first UPF.
Step 5: and the first UPF detects the slice service data message in real time according to the triggering condition in the process of providing the corresponding signed slice for the terminal according to the slice channel, and when the slice service data request reported by the terminal is found to be consistent with the triggering condition of other signed slices, initiates a new slice channel slice request to the AMF through the SMF, informs the AMF to establish a new slice data channel and caches the data packet.
Step 6: the first UPF initiates a new slice channel switching request to the SMF so as to feed back new slice channel requirements, wherein the request contains a new slice S-NNSAI identifier corresponding to the triggering condition identified by the first UPF.
Step 7: the SMF carries out transparent transmission of a UPF initiated new slice channel switching request message and notifies the AMF to initiate a new slice channel establishment request.
Step 8: and the AMF establishes a new slice data channel according to the currently received new slice S-NNSAI identifier of the terminal.
Step 9: after the NEW slice channel is established, the AMF feeds back a channel establishment completion notification to the SMF, wherein the notification also comprises the IP address of a second UPF (UPF-NEW) corresponding to the NEW slice channel.
Step 10: and the SMF transmits the message in a transparent way and notifies the original first UPF.
Step 11: and forwarding the cached data packet and the slice subscription information of the terminal to the second UPF by the first UPF according to the IP address of the second UPF of the new slice channel fed back by the AMF.
Optionally, an embodiment of the present application further provides a slice switching device for a 5G network, as shown in fig. 6, where the slice switching device 2000 includes a memory 2200 and a processor 2400 electrically connected to the memory 2200, where the memory 2200 stores a computer program that can be executed by the processor 2400, where the computer program is executed by the processor to implement each process of any one of the foregoing embodiments of the slice switching method for the 5G network, and the same technical effect is achieved, and for avoiding repetition, a description is omitted herein.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements each process of any one of the above embodiments of the slice switching method of the 5G network, and can achieve the same technical effect, so that repetition is avoided, and no further description is given here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (10)
1. A slice switching method for a 5G network, applied to an access and mobility management function AMF, the method comprising:
acquiring slice subscription information of target terminal equipment, wherein the slice subscription information comprises a single network slice selection auxiliary information S-NSSAI identifier, a subscription access address and an address of a user plane function UPF corresponding to each subscription slice of the target terminal equipment;
when the target terminal equipment initiates a slice channel establishment request, a first slice channel is established according to the slice subscription information and the slice channel establishment request so as to provide a first subscription slice for the target terminal equipment;
the slice subscription information is sent to a first UPF corresponding to the first subscription slice;
and when a slice channel switching request sent by the first UPF is received, switching the first slice channel to a second slice channel according to the slice subscription information and the slice channel switching request so as to provide a second subscription slice for the target terminal equipment.
2. The method of claim 1, wherein establishing a first slice channel according to the slice subscription information and the slice channel establishment request comprises:
determining the address of a first UPF corresponding to the first subscription slice according to the S-NSSAI identifier, the UPF address and the S-NSSAI identifier of the first subscription slice carried in the slice channel establishment request, which are included in the slice subscription information;
and establishing the first slicing channel according to the address of the first UPF.
3. The method of claim 1, wherein switching the first slice channel to a second slice channel according to the slice subscription information and the slice channel switching request comprises:
determining the address of a second UPF corresponding to the second subscription slice according to the S-NSSAI identifier, the UPF address and the S-NSSAI identifier of the second subscription slice carried in the slice channel switching request, which are included in the slice subscription information;
establishing the second slicing channel according to the address of the second UPF;
and switching the slicing service data request of the target terminal equipment to the second slicing channel for transmission.
4. The method of claim 1 or 3, further comprising, after establishing a second slice channel according to the slice subscription information and the slice channel switching request:
and sending the slice subscription information to a second UPF corresponding to the second slice channel.
5. The method of claim 3, further comprising, after establishing a second slice channel according to the slice subscription information and the slice channel switch request:
and feeding back the address of the second UPF to the first UPF, wherein the first UPF forwards the buffer data of the slice switching request and the slice subscription information to the second UPF, which are triggered by the target terminal equipment, according to the address of the second UPF.
6. A slice switching method for a 5G network, applied to a user plane function UPF, the method comprising:
when a first slice channel is established according to a slice channel establishment request of a target terminal device, receiving slice subscription information of the target terminal device, which is sent by an AMF, wherein the slice subscription information comprises an S-NSSAI identifier of a first subscription slice corresponding to the slice channel establishment request, an S-NSSAI identifier of other subscription slices of the target terminal device, a corresponding subscription access address and an address of a UPF;
receiving a slicing service data request sent by the target terminal equipment in real time through the established first slicing channel;
and sending a slice channel switching request to the AMF according to the slice subscription information and the received slice service data request, wherein the AMF switches the slice service data request of the target terminal equipment from the first slice channel to a second slice channel corresponding to the slice channel switching request for transmission.
7. The method of claim 6, wherein sending a slice channel switch request to the AMF based on the slice subscription information and the received slice service data request comprises:
comparing an access address carried in a currently received slice service data request with a subscription access address corresponding to S-NSSAI identifiers of other subscription slices in the slice subscription information;
and when the matched subscription access address exists, sending a slice channel switching request to the AMF, wherein the slice channel switching request carries an S-NSSAI identification of a second subscription slice with the matched subscription access address.
8. The method of claim 7, further comprising, after sending a slice channel switch request to the AMF:
receiving an address of a second UPF corresponding to the second signed slice fed back by the AMF in response to the slice channel switching request;
and forwarding the cache data corresponding to the currently received slice service data request and the slice subscription information to the second UPF according to the address of the second UPF.
9. A slice switching system of a 5G network is characterized by comprising an access and mobility management function AMF and a user plane function UPF,
the AMF acquires slice subscription information of target terminal equipment, wherein the slice subscription information comprises a single network slice selection auxiliary information S-NSSAI identifier, a subscription access address and an address of UPF corresponding to each subscription slice of the target terminal equipment; when the target terminal equipment initiates a slice channel establishment request, a first slice channel is established according to the slice subscription information and the slice channel establishment request so as to provide a first subscription slice for the target terminal equipment; the slice subscription information is sent to a UPF corresponding to the first subscription slice;
the UPF receives the slice subscription information sent by the AMF; receiving a slicing service data request sent by the target terminal equipment in real time through the first slicing channel; transmitting a slice channel switching request to the AMF according to the slice subscription information and the received slice service data request;
and the AMF switches the first slicing channel to a second slicing channel according to the slicing subscription information and the slicing channel switching request so as to provide a second subscription slice for the target terminal equipment.
10. A slice switching apparatus for a 5G network, comprising: a memory and a processor electrically connected to the memory, the memory storing a computer program executable by the processor to perform the steps of the method of any one of claims 1 to 5 or to perform the steps of the method of any one of claims 6 to 8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116886541A (en) * | 2023-08-04 | 2023-10-13 | 中国联合网络通信有限公司深圳市分公司 | Service broadband 5GCPE protection and bandwidth real-time allocation method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116886541A (en) * | 2023-08-04 | 2023-10-13 | 中国联合网络通信有限公司深圳市分公司 | Service broadband 5GCPE protection and bandwidth real-time allocation method and system |
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