CN110248353B - Network slice processing method and equipment - Google Patents

Network slice processing method and equipment Download PDF

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Publication number
CN110248353B
CN110248353B CN201810187334.2A CN201810187334A CN110248353B CN 110248353 B CN110248353 B CN 110248353B CN 201810187334 A CN201810187334 A CN 201810187334A CN 110248353 B CN110248353 B CN 110248353B
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base station
network slice
network
ran base
ran
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CN110248353A (en
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倪春林
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes

Abstract

The invention discloses a network slice processing method and device, comprising the following steps: a core network CN obtains a network slice which is carried by user equipment UE when the UE is registered in a first radio access network RAN base station and does not belong to the network slice supported by the first RAN base station; the CN sends information indicating the network slice accepted by the CN to the first RAN base station, wherein the information is used for the first RAN base station to establish a dual-connection DC with a second RAN base station so that the UE obtains the service of the network slice through the DC, and the second RAN base station is a base station supporting the network slice.

Description

Network slice processing method and equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing network slices.
Background
A network slicing technology is introduced into a 5G (5-Generation, fifth Generation mobile communication technology) NR (New radio access technology) system, and the network slicing technology is a technology that enables an operator to slice a plurality of virtual end-to-end network slice instances in a 5G network to provide various types of services with different characteristics and requirements, so that the operator can flexibly configure the supported network slices on the network side according to different requirements.
At present, when a User Equipment (UE) applies for network registration in a 5G NR environment, the UE may carry a network slice preconfigured and supported in the UE, and when the network slice carried by the UE belongs to network slices supported by a same base station, a network side may return to a network slice allowed to be accessed by the UE according to a User subscription and a network support condition to obtain information of a network slice service, however, when the network slice carried by the UE does not belong to network slices supported by the same base station, the UE cannot obtain a service of a network slice not supported by the same base station.
Therefore, the prior art has the technical problem that the UE cannot obtain the service which does not belong to the network slice supported by the same base station.
Disclosure of Invention
The embodiment of the invention provides a network slice processing method and equipment, which are used for achieving the purpose that UE obtains services of network slices which are not supported by the same base station.
To this end, in a first aspect, an embodiment of the present invention provides a network slice processing method, including:
a core network CN obtains a network slice which is carried by user equipment UE when the UE is registered in a first radio access network RAN base station and does not belong to the network slice supported by the first RAN base station;
the CN sends information indicating the network slice accepted by the CN to the first RAN base station, wherein the information is used for the first RAN base station to establish a dual-connection DC with a second RAN base station so that the UE obtains the service of the network slice through the DC, and the second RAN base station is a base station supporting the network slice.
In the embodiment of the invention, when the network slices carried in the UE registration comprise the network slices which are not supported by the same base station, the CN receives the network slices, so that the RAN base station registered by the UE can establish the DC with the neighboring RAN base station supporting the network slices, and the UE can obtain the service of the network slices through the DC.
Optionally, before the CN sends, to the first RAN base station, information indicating the network slice accepted by the CN, the method includes:
obtaining a network slice list transmitted by the first RAN base station and comprising network slices supported by neighboring base stations, wherein the neighboring base stations comprise the second RAN base station;
determining, from the network slice list, that the network slice does not belong to a network slice supported by the first RAN base station but belongs to a network slice supported by the second RAN base station.
Optionally, the sending, by the CN, information indicating the network slice accepted by the CN to the first RAN base station includes:
the CN sends information indicating the network slice accepted by the CN to a first RAN base station, or
The CN sends information to a first RAN base station indicating that network slices accepted by the CN are available as DCs.
The foregoing optional manner further describes that, when the network slice carried by the UE includes a network slice that is not supported by the same base station, the CN may directly receive the network slice, or the CN may receive the network slice in a manner of supporting the network slice as a DC, so that the RAN base station registered by the UE can establish a DC with the RAN base station in the neighboring area that supports the network slice, so that the UE obtains the service of the network slice through the DC, thereby not only solving the problem that the UE cannot obtain the service of the network slice that is not supported by the same base station, but also having an effect of diversifying the service manner in which the UE obtains the network slice that is not supported by the same base station.
Optionally, the sending, by the CN, information indicating the network slice accepted by the CN to the first RAN base station includes:
the CN obtains indication information sent by the first RAN base station for indicating that the network slice is allowed to be accepted as DC;
and the CN sends the received information that the network slice can be used as the DC according to the indication information.
The foregoing optional manner further describes that, when the network slice carried by the UE includes a network slice that does not belong to the same base station, the RAN base station may indicate the CN that the network slice may be accepted as a DC, so that the RAN base station registered by the UE can establish a DC with a neighboring RAN base station that supports the network slice, so that the UE obtains a service of the network slice through the DC, and therefore, an effect of diversification of a service manner in which the UE obtains the network slice that does not belong to the same base station is further achieved.
Optionally, the method further includes:
the CN obtains a network slice which is carried by the UE when the UE is registered in the first RAN base station and is supported by the first RAN base station;
the CN sends information to the first RAN base station, wherein the information indicates that the CN accepts the network slices supported by the first RAN base station.
In a second aspect, an embodiment of the present invention further provides a network slice processing method, including:
a first RAN base station receives information which is sent by a CN and indicates a network slice accepted by the CN, wherein the network slice is a network slice which is carried by UE when the UE is registered in the first RAN base station and does not belong to the network slice supported by the first RAN base station;
based on the information, the first RAN base station establishes a DC with a second RAN base station that supports the network slice such that the UE obtains service of the network slice through the DC.
Optionally, the receiving, by the first RAN base station, information indicating a network slice accepted by a CN, where the information is sent by the CN, includes:
the first RAN base station receives the information which is sent by the CN and used for indicating the network slice accepted by the CN, or
The first RAN base station receives information sent by the CN and used for indicating that the network slices accepted by the CN can be used as DCs.
Optionally, before the first RAN base station receives the information indicating the network slice accepted by the CN, the method includes:
sending a network slice list including network slices supported by neighboring base stations to the CN;
wherein the neighboring base station comprises the second RAN base station, the network slice list is used to determine that the network slice does not belong to a network slice supported by the first RAN base station but belongs to a network slice supported by a neighboring base station.
Optionally, the sending, to the CN, a network slice list including network slices supported by neighboring base stations specifically includes:
and the first RAN base station sends the network slice list to the CN when an NG interface is established or the first RAN base station is configured and updated.
Optionally, the receiving, by the first RAN base station, information indicating a network slice accepted by a CN, where the information is sent by the CN, includes:
receiving the network slice carried by the UE when the UE is registered in the first RAN base station;
determining the network slice as a network slice not supported by the first RAN base station but supported by a neighboring base station according to a stored network slice list comprising network slices supported by neighboring base stations;
sending indication information to the CN indicating that the network slice is allowed to be accepted as DC.
Optionally, the method further includes:
receiving network slices supported by the first RAN base station and carried by the UE when the UE is registered in the first RAN base station;
sending the network slices supported by the first RAN base station to the CN;
and receiving information which is sent by the CN and indicates the CN to accept the network slice supported by the first RAN base station.
In a third aspect, an embodiment of the present invention provides a network device, including:
the device comprises an obtaining unit, a processing unit and a processing unit, wherein the obtaining unit is used for obtaining a network slice which is carried by UE when the UE is registered in a first radio access network RAN base station and does not belong to the network slice supported by the first RAN base station;
a sending unit, configured to send, to the first RAN base station, information indicating a network slice accepted by the network device, where the information is used for the first RAN base station to establish a dual connectivity DC with a second RAN base station, so that the UE obtains a service of the network slice through the DC, where the second RAN base station is a base station supporting the network slice.
Optionally, the obtaining unit is further configured to:
obtaining a network slice list transmitted by the first RAN base station and comprising network slices supported by neighboring base stations, wherein the neighboring base stations comprise the second RAN base station;
determining, from the network slice list, that the network slice does not belong to a network slice supported by the first RAN base station but belongs to a network slice supported by the second RAN base station.
Optionally, the sending unit is further configured to:
the network device sends information indicating the network slice accepted by the network device to the first RAN base station, or
The network device sends information to a first RAN base station indicating that network slices accepted by the network device are available as DCs.
Optionally, the sending unit is further configured to:
the network equipment obtains indication information sent by a first RAN base station and used for indicating that the network slice can be accepted as a DC;
and the network equipment sends and receives the information that the network slice can be used as the DC according to the indication information.
Optionally, the obtaining unit is further configured to:
the network equipment obtains network slices which are carried by the UE when the UE is registered at the first RAN base station and are supported by the first RAN base station;
the network device sends information to the first RAN base station indicating that the network device accepts network slices supported by the first RAN base station.
In a fourth aspect, an embodiment of the present invention further provides a network device, including:
a receiving unit, configured to receive information, which is sent by a CN and indicates a network slice accepted by the CN, where the network slice is a network slice that is carried by the UE during registration of the network device and is not supported by the network device;
an establishing unit configured to establish a DC with a second RAN base station supporting the network slice based on the information, so that the UE obtains a service of the network slice through the DC.
Optionally, the receiving unit is further configured to:
the network equipment receives the information which is sent by the CN and used for indicating the network slice accepted by the CN, or
The network equipment receives information sent by the CN and used for indicating that the network slice accepted by the CN can be used as the DC.
Optionally, the apparatus further includes a sending unit, configured to:
sending a network slice list including network slices supported by neighboring base stations to the CN;
wherein the neighboring base station comprises the second RAN base station, the network slice list is used to determine that the network slice does not belong to a network slice supported by the network device but belongs to a network slice supported by a neighboring base station.
Optionally, the establishing unit is further configured to:
and the network equipment sends the network slice list to the CN when an NG interface is established or the network equipment updates the configuration.
Optionally, the receiving unit is further configured to:
receiving the network slice carried by the UE when the network equipment is registered;
determining the network slice as a network slice which is not supported by the network equipment but is supported by a neighboring base station according to a stored network slice list comprising network slices supported by the neighboring base station;
sending indication information to the CN indicating that the network slice is allowed to be accepted as DC.
Optionally, the receiving unit is further configured to:
receiving network slices supported by the network equipment and carried by the UE when the network equipment is registered;
sending the network slices supported by the network equipment to the CN;
and receiving information which is sent by the CN and indicates the CN to accept the network slices supported by the network equipment.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
according to the technical scheme in the embodiment of the application, when the network slices carried in the UE registration include the network slices which are not supported by the same base station, the CN receives the network slices, so that the RAN base station registered by the UE can establish the DC with the neighboring RAN base station supporting the network slices, and the UE can obtain the service of the network slices through the DC.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a flowchart of a network slice processing method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of network slice deployment according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a network slicing process according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another network slicing process provided in the embodiment of the present invention;
fig. 5 is a schematic diagram of another network slicing process according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the technical solutions of the present invention. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments described in the present application are within the scope of the protection of the technical solution of the present invention.
A network slicing technology is introduced into the 5G NR system, and the network slicing technology enables an operator to slice a plurality of virtual end-to-end network slicing instances in a 5G network, thereby providing various types of services with different characteristics and requirements, so that the operator can flexibly configure the network slices supported by the operator at the network side according to different requirements.
At present, when a UE applies for network registration in a 5G NR environment, the UE may carry a network slice preconfigured and supported in the UE, and when the network slice carried by the UE belongs to a network slice of a same base station, a network end may return to a network slice that the UE is allowed to access according to a user subscription and a network support condition to obtain information of a network slice service, however, when the network slice preconfigured and supported in the UE carried by the UE does not belong to a network slice supported by the same base station, the UE cannot obtain a service of a network slice that is not supported by the same base station.
Therefore, embodiments of the present invention provide a network slice processing method and device, which are used to solve the problem in the prior art that a UE cannot obtain a service of a network slice that is not supported by the same base station.
The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto. It is to be understood that the embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
In the description of the embodiments of the invention, the terms "first," "second," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, nor for purposes of indicating or implying order.
Referring to fig. 1, a network slice processing method according to an embodiment of the present invention includes:
step S101: a core network CN obtains a network slice which is carried by user equipment UE when the UE is registered in a first radio access network RAN base station and does not belong to the network slice supported by the first RAN base station;
in the embodiment of the present invention, a CN (Core Network) may be a Core Network in 5G, and the Core Network in 5G may also be referred to as 5G-CN for short, when a UE intends to reside in a cell of a RAN (Radio Access Network) base station in a 5G NR environment, the UE may initiate registration to the RAN base station and simultaneously carry preconfigured Network slice information, and then the CN obtains the Network slice information carried by the UE during registration through the RAN base station.
For example, as shown in fig. 2, it is assumed that a RAN base station 1 and a RAN base station 2 are included in a 5G NR environment, where base station 1 in fig. 2 represents RAN base station 1 and base station 2 in fig. 2 represents RAN base station 2, and in practical applications, one RAN base station may support one or more network slices, for example, RAN base station 1 may support network slice 1 and RAN base station 2 may support network slice 2; also, for example, RAN base station 1 may support network slice 1, RAN base station 2 may also support network slice 2 and network slice 3, etc., which are not listed here.
In the embodiment of the present invention, specifically, the RAN base station 1 supports the network slice 1, and the RAN base station 2 supports the network slice 2 as an example.
In practical applications, the UE-preconfigured network slice may also include network slices supported by one RAN base station adjacent to RAN base station 1, and may also include network slices supported by a plurality of RAN base stations adjacent to RAN base station 1, for example, the UE-preconfigured network slice includes network slice 1 supported by RAN base station 1 and network slice 2 supported by RAN base station 2; as another example, the UE pre-configured network slices include network slice 1 supported by RAN base station 1, network slice 2 supported by RAN base station 2, and network slice 3 supported by RAN base station 3, and so on.
In the embodiment of the present invention, specifically, the network slice preconfigured by the UE includes network slice 1 supported by RAN base station 1 and network slice 2 supported by RAN base station 2 as an example.
Then, when UE intends to camp on the cell of RAN base station 1, UE initiates registration to RAN base station 1, and at the same time, UE carries preconfigured network slice 1 and network slice 2, and in practical application, UE can carry preconfigured network slice 1 and network slice 2 through S-NSSAI information in RRC in msg5 message in registration process.
After receiving the msg5 message, the RAN base station 1 obtains the preconfigured network slice 1 and network slice 2 carried by the UE according to the S-NSSAI information in the RRC in the msg5 message.
Optionally, the CN obtains a network slice, which is carried by the UE when the UE is registered in the first RAN base station and is supported by the first RAN base station, and sends Allowed S-NSSAI information, which indicates that the CN accepts the network slice supported by the first RAN base station, to the first RAN base station.
In the embodiment of the present invention, after the RAN base station 1 obtains the preconfigured network slice 1 and the network slice 2 carried by the UE, the RAN base station 1 may send both the network slice 1 supported by the RAN base station 1 and the network slice 2 not supported by the RAN base station but supported by a neighboring base station to the CN, so that the CN obtains the preconfigured network slices carried by the UE, that is, the network slice 1 and the network slice 2.
Step S102: the CN sends information indicating the network slice accepted by the CN to the first RAN base station, wherein the information is used for the first RAN base station to establish a dual-connection DC with a second RAN base station, so that the UE obtains the service of the network slice through the DC.
Wherein the second RAN base station is a base station supporting the network slice.
In the embodiment of the present invention, after the CN obtains the preconfigured network slice 1 and the network slice 2 carried by the UE, the CN may determine, according to a network slice list including network slices supported by neighboring base stations of the RAN base station 1 and sent by the RAN base station 1, that the network slice 1 is a network slice supported by the RAN base station 1, and determine that the network slice 2 is not supported by the RAN base station 1 but is supported by the neighboring base stations, that is, the RAN base station 2.
The RAN base station 1 may send the network slice list to the CN when the NG interface is established, or the RAN base station 1 may send the network slice list to the CN when the configuration thereof is updated.
Optionally, the RAN base station 1 may form a network Slice List TAI Slice Support List according to the network slices supported by the local base station and the network slices supported by the neighboring base stations of the RAN base station 1, where the network Slice List TAI Slice Support List includes the network slices supported by the local base station and the network slices supported by the neighboring base stations.
For example, as shown in fig. 3, RAN1 in fig. 3 represents RAN base station 1, RAN2 in fig. 3 represents RAN base station 2, and 5G-CN in fig. 3 represents CN, RAN base station 1 sends network Slice List TAI Slice Support List to CN when an NG interface is established, and CN may further respond to RAN base station 1 by carrying information of AMF TAI Slice Support List after receiving TAI Slice Support List, specifically, CN may carry AMF TAI Slice Support List when responding to information established by the NG interface of RAN base station 1 as shown in fig. 3.
Optionally, the RAN base station 1 may further form a network Slice List TAI Slice Support List supported by the local base station according to the network slices supported by the local base station, and form a network Slice List DC TAI Slice Support List supported by the neighboring base station according to the network slices supported by the neighboring base stations of the RAN base station 1, so that the TAI Slice Support List only includes the network slices supported by the RAN base station 1, and the DC TAI Slice Support List only includes the network slices supported by the neighboring base stations.
Similarly, the RAN base station 1 may generate, when the NG interface is established or when the configuration thereof is updated, the TAI Slice Support List including only the network slices supported by the RAN base station 1 and the DC TAI Slice Support List including only the network slices supported by the neighboring base stations to the CN, and the CN may have received the TAI Slice Support List and the DC TAI Slice Support List from the RAN base station 1 through the message carrying the AMF TAI Slice Support List and the AMF DC TAI Slice Support List.
In the embodiment of the present invention, specifically, the RAN base station 1 sends a network Slice List TAI Slice Support List including network slices supported by the local base station and network slices supported by neighboring base stations to the CN when the NG interface is established.
In practical applications, the step S102 can be executed at least in the following three ways:
the first mode is as follows:
step A: the CN sends information indicating the network slice accepted by the CN to a first RAN base station.
With continued reference to fig. 3, the CN may store the received TAI Slice Support List including the network slices supported by the RAN base station 1 and the network slices supported by the neighboring base stations, and when the RAN base station 1 sends the network Slice 1 and the network Slice 2 carried by the UE in the registration process to the CN, the CN may determine, according to the stored TAI Slice Support List, that the network Slice 1 belongs to the network Slice supported by the RAN base station 1, and determine that the network Slice 2 does not belong to the network Slice supported by the RAN base station 1 but is supported by the neighboring base station.
The CN may directly respond to the RAN base station 1 to receive the network slice 1 and receive the Allowed S-NSSAI information of the network slice 2, and then when the UE initiates a service PDU (Protocol Data Unit) establishment to the CN in the network slice 2 through the RAN base station 1, the CN may respond to the RAN base station 1 to receive the PDU establishment of the UE, and then the RAN base station 1 may respond to the UE to receive the PDU establishment of the UE, and at the same time, the RAN base station 1 may initiate the establishment of a dual-connectivity DC between the PDU establishment and the RAN base station 2 supporting the network slice 2, and then complete the establishment of the PDU through the established DC, so that the UE obtains the service of the network slice 2.
In practical applications, there may be a case that when the signal quality of the base station cell is poor, the DC establishment may also fail, and the PDU establishment of the UE is rejected, which will not be discussed herein.
Therefore, by the method, when the network slice carried by the UE includes the network slice not supported by the same base station, the CN can directly accept the network slice not supported by the same base station, so that the RAN base station registered by the UE can establish the DC with the RAN base station in the neighboring area supporting the network slice, so that the UE can obtain the service of the network slice through the DC.
Since the RAN base station 1 supports the network slice 1, when the UE initiates service PDU establishment to the CN in the network slice 1 through the RAN base station 1, the CN directly responds to the RAN base station 1 to accept the PDU establishment of the UE, and then the RAN base station 1 also accepts and completes the PDU establishment of the UE, so that the UE obtains the service of the network slice 1.
The second mode is as follows:
and B: the CN sends information to a first RAN base station indicating that network slices accepted by the CN are available as DCs.
In the second mode, when the CN receives the TAI Slice Support List including the network slices supported by the RAN base station 1 and the network slices supported by the neighboring base stations, it determines that the network Slice 1 belongs to the network Slice supported by the RAN base station 1 and determines that the network Slice 2 does not belong to the network Slice supported by the RAN base station 1 but is supported by the neighboring base stations according to the TAI Slice Support List.
Since the network slice 1 is a slice supported by the RAN base station 1, the CN can directly respond to the RAN base station 1 to receive the Allowed S-NSSAI information of the network slice 1, when the UE initiates service PDU establishment to the CN in the network slice 1 through the RAN base station 1, the CN responds to the RAN base station 1 to receive the PDU establishment of the UE, and then the RAN base station 1 responds to the UE to receive and complete the PDU establishment of the UE, so that the UE obtains the service of the network slice 1.
And the network slice 2 does not belong to the slice supported by the RAN base station 1 but supported by the neighboring base station, that is, the RAN base station 2, the CN can directly respond to the RAN base station 1 to accept the Allowed S-NSSAI information of the DC that the network slice 2 can make, and further when the UE initiates service PDU establishment to the CN through the RAN base station 1 to the CN at the network slice 2, the CN responds to the RAN base station 1 to accept the PDU establishment of the UE, and the RAN base station 1 responds to the UE to accept the PDU establishment of the UE, and at the same time, the RAN base station 1 initiates establishment of a dual-connection DC between the RAN base station 2 supporting the network slice 2 for the PDU establishment, and completes the establishment of the PDU through the established DC, so that the UE obtains the service of the network slice 2.
Therefore, by the above method, when the network slice carried by the UE includes a network slice that is not supported by the same base station, the CN may receive the network slice in a manner of supporting the network slice as a DC, so that the RAN base station registered by the UE can establish the DC with the RAN base station in the neighboring area that supports the network slice, so that the UE obtains the service of the network slice through the DC.
The third mode is as follows:
the CN obtains indication information sent by a first RAN base station and used for indicating that the network slice can be accepted as DC;
and the CN sends the received information that the network slice can be used as the DC according to the indication information.
Referring to fig. 4, RAN1 in fig. 4 represents RAN base station 1, RAN2 in fig. 4 represents RAN base station 2, and 5G-CN in fig. 4 represents CN, after RAN base station 1 obtains network slice 1 and network slice 2 pre-configured at the time of UE registration (i.e. initial access in fig. 4), RAN base station 1 may first determine that network slice 2 does not belong to the network slices supported by RAN base station 1 but supported by neighboring RAN base stations according to locally stored network slices supported by the local base station and network slice information supported by neighboring base stations, RAN base station 1 carries indication information indicating that network slice 2 is allowed to be accepted as DC in UE initial information sent to CN.
After receiving indication information indicating that the network slice 2 carried in the UE initial information can be accepted as DC, the CN responds to the RAN base station 1 to accept the information that the network slice 2 can be accepted as DC, and further after the UE registration is completed, when the UE initiates a service PDU establishment process to the CN through the RAN base station 1 to the CN at the network slice 2, the CN responds to the RAN base station 1 to accept the PDU establishment of the UE, the RAN base station 1 responds to the UE to accept the PDU establishment of the UE, and the RAN base station 1 initiates the establishment of DC between the RAN base station 2 supporting the network slice 2 for the PDU establishment, and further completes the establishment of the PDU through the established DC, so that the UE obtains the service of the network slice 2.
Therefore, according to the method, when the RAN base station 1 determines that the network slice carried by the UE includes a network slice that is not supported by the RAN base station, the RAN base station 1 may send, to the CN, information indicating that the network slice is accepted as a DC mode, so that the CN accepts the network slice, so that the RAN base station registered by the UE can establish a DC with a neighboring RAN base station that supports the network slice, and further the UE obtains a service of the network slice through the DC.
In the embodiment of the invention, when the RAN base station 1 determines that the network slice 1 belongs to the network slice supported by the RAN base station 1 according to the locally stored network slice supported by the base station and the network slice information supported by the adjacent cell base station, the RAN base station 1 can directly forward the network slice 1 to the CN, and when the CN determines that the network slice 1 belongs to the network slice supported by the RAN base station 1 according to the network slice supported by the RAN base station 1 and the network slice information supported by the adjacent cell, the RAN base station 1 is directly responded to receive the Allowed S-NSSAI information of the network slice 1.
When UE initiates service PDU establishment to CN in network slice 1 through RAN base station 1, CN responds to RAN base station 1 to accept PDU establishment of UE, RAN base station 1 responds to UE to accept PDU establishment of UE and completes PDU establishment of UE, and UE obtains service of network slice 1.
In the embodiment of the present invention, if the UE is handed over in different cells under the RAN base station 1, that is, in the same registration area, the UE does not initiate a new registration process, so that the accepted network slice information is not changed, and the network slice that is not supported by the RAN base station 1 (registration area) is still accepted and served.
Referring to fig. 5, in the embodiment of the present invention, if the RAN base station 1 is switched to the RAN base station 3 through an Xn interface in the DC structure with the RAN base station 2, a DC relationship can still be constructed between the RAN base station 3 and the RAN base station 2, and the UE can still obtain the service of the network slice 2 through the constructed DC of the RAN base station 3 and the RAN base station 2.
Specifically, as shown in fig. 5, RAN1 in fig. 5 represents RAN base station 1, RAN2 in fig. 5 represents RAN base station 2, RAN 3 in fig. 5 represents RAN base station 3, RAN base station 1 initiates HO request, including information related to SCG of UE at RAN base station 2, including MCG and SCG PDU and S-NSSAI information; the RAN base station 3 constructs a DC with the RAN base station 2 according to the information, completes the conversion process of the MCG node and completes the path switching of PDU session, wherein the SCG PDU session path is kept unchanged. Then, based on the DC of RAN base station 3 and RAN base station 2, service PDU establishment initiated by the UE in network slice 2 is completed, so that the UE obtains the service of network slice 2, which is not described repeatedly herein.
In the embodiment of the present invention, if the RAN base station 1 is switched to the RAN base station 3 by NG, the information about SCG PDU is carried in the container sent to the RAN base station 3 by the RAN base station 1 in the switching process, the RAN base station 3 receives the PDU, after the switching is completed, the DC is reestablished with the RAN base station 2 by using the DC node adding process, and then the UE can obtain the service of the network slice 2 according to the reestablished DC, which is not described repeatedly herein.
Based on the same inventive concept, the embodiment of the present invention provides a network slice processing method, which is applied to a RAN base station side, and the specific implementation of the network slice processing method may refer to the description of the above method embodiment, and repeated parts are not described again, and the method includes:
a first RAN base station receives information which is sent by a CN and indicates a network slice accepted by the CN, wherein the network slice is a network slice which is carried by UE when the UE is registered in the first RAN base station and does not belong to the network slice supported by the first RAN base station;
based on the information, the first RAN base station establishes a DC with a second RAN base station that supports the network slice such that the UE obtains service of the network slice through the DC.
Optionally, the receiving, by the first RAN base station, information indicating a network slice accepted by a CN, where the information is sent by the CN, includes:
the first RAN base station receives information which is sent by the CN and used for indicating the network slice accepted by the CN, or
The first RAN base station receives information sent by the CN and used for indicating that the network slices accepted by the CN can be used as DCs.
Optionally, before the first RAN base station receives the information indicating the network slice accepted by the CN, the method includes:
sending a network slice list including network slices supported by neighboring base stations to the CN;
wherein the neighboring base station comprises the second RAN base station, the network slice list is used to determine that the network slice does not belong to a network slice supported by the first RAN base station but belongs to a network slice supported by a neighboring base station.
Optionally, the sending, to the CN, a network slice list including network slices supported by neighboring base stations specifically includes:
and the first RAN base station sends the network slice list to the CN when an NG interface is established or the first RAN base station is configured and updated.
Optionally, the receiving, by the first RAN base station, information indicating a network slice accepted by a CN, where the information is sent by the CN, includes:
receiving the network slice carried by the UE when the UE is registered in the first RAN base station;
determining the network slice as a network slice not supported by the first RAN base station but supported by a neighboring base station according to a stored network slice list comprising network slices supported by neighboring base stations;
sending indication information to the CN indicating that the network slice is allowed to be accepted as DC.
Optionally, the method further includes:
receiving network slices supported by the first RAN base station and carried by the UE when the UE is registered in the first RAN base station;
sending the network slices supported by the first RAN base station to the CN;
and receiving information which is sent by the CN and indicates the CN to accept the network slice supported by the first RAN base station.
Based on the same inventive concept, embodiments of the present invention provide a network device, and for specific implementation of a network slice processing method of the device, reference may be made to the description of the foregoing method embodiment, and repeated descriptions are omitted, where the device includes:
the device comprises an obtaining unit, a processing unit and a processing unit, wherein the obtaining unit is used for obtaining a network slice which is carried by UE when the UE is registered in a first radio access network RAN base station and does not belong to the network slice supported by the first RAN base station;
a sending unit, configured to send, to the first RAN base station, information indicating a network slice accepted by the network device, where the information is used for the first RAN base station to establish a dual connectivity DC with a second RAN base station, so that the UE obtains a service of the network slice through the DC, where the second RAN base station is a base station supporting the network slice.
Optionally, the obtaining unit is further configured to:
obtaining a network slice list transmitted by the first RAN base station and comprising network slices supported by neighboring base stations, wherein the neighboring base stations comprise the second RAN base station;
determining, from the network slice list, that the network slice does not belong to a network slice supported by the first RAN base station but belongs to a network slice supported by the second RAN base station.
Optionally, the sending unit is further configured to:
the network device sends information indicating the network slice accepted by the network device to the first RAN base station, or
The network device sends information to a first RAN base station indicating that network slices accepted by the network device are available as DCs.
Optionally, the sending unit is further configured to:
the network equipment obtains indication information sent by a first RAN base station and used for indicating that the network slice can be accepted as a DC;
and the network equipment sends and receives the information that the network slice can be used as the DC according to the indication information.
Optionally, the obtaining unit is further configured to:
the network equipment obtains network slices which are carried by the UE when the UE is registered at the first RAN base station and are supported by the first RAN base station;
the network device sends information to the first RAN base station indicating that the network device accepts network slices supported by the first RAN base station.
Based on the same inventive concept, embodiments of the present invention provide a network device, and for specific implementation of a network slice processing method of the device, reference may be made to the description of the foregoing method embodiment, and repeated descriptions are omitted, where the device includes:
a receiving unit, configured to receive information, which is sent by a CN and indicates a network slice accepted by the CN, where the network slice is a network slice that is carried by the UE during registration of the network device and is not supported by the network device;
an establishing unit configured to establish a DC with a second RAN base station supporting the network slice based on the information, so that the UE obtains a service of the network slice through the DC.
Optionally, the receiving unit is further configured to:
the network equipment receives the information which is sent by the CN and used for indicating the network slice accepted by the CN, or
The network equipment receives information sent by the CN and used for indicating that the network slice accepted by the CN can be used as the DC.
Optionally, the apparatus further includes a sending unit, configured to:
sending a network slice list including network slices supported by neighboring base stations to the CN;
wherein the neighboring base station comprises the second RAN base station, the network slice list is used to determine that the network slice does not belong to a network slice supported by the network device but belongs to a network slice supported by a neighboring base station.
Optionally, the establishing unit is further configured to:
and the network equipment sends the network slice list to the CN when an NG interface is established or the network equipment is configured and updated.
Optionally, the receiving unit is further configured to:
receiving the network slice carried by the UE when the network equipment is registered;
determining the network slice as a network slice which is not supported by the network equipment but is supported by a neighboring base station according to a stored network slice list comprising network slices supported by the neighboring base station;
sending indication information to the CN indicating that the network slice is allowed to be accepted as DC.
Optionally, the receiving unit is further configured to:
receiving network slices supported by the network equipment and carried by the UE when the network equipment is registered;
sending the network slices supported by the network equipment to the CN;
and receiving information which is sent by the CN and indicates the CN to accept the network slices supported by the network equipment.
Based on the same inventive concept, an embodiment of the present invention provides an apparatus, including:
at least one processor, and
a memory coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor, and the at least one processor performs the network slice processing method as described above by executing the instructions stored by the memory.
Based on the same inventive concept, an embodiment of the present invention provides a computer-readable storage medium:
the computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the network slice processing method as described above.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (16)

1. A method for network slice processing, comprising:
a core network CN obtains a network slice which is carried by user equipment UE when the UE is registered in a first radio access network RAN base station and does not belong to the network slice supported by the first RAN base station;
the CN sends information indicating the network slice accepted by the CN to the first RAN base station, wherein the information is used for the first RAN base station to establish a dual-connection DC with a second RAN base station so that the UE obtains the service of the network slice through the DC, and the second RAN base station is a base station supporting the network slice; the CN sending, to the first RAN base station, information indicating the network slice accepted by the CN, including: the CN sends information which indicates the network slices which are directly accepted by the CN and do not belong to the same base station to a first RAN base station; or, the CN sends information indicating that the network slice accepted by the CN can be used as a DC to a first RAN base station; or, the CN obtains indication information sent by the first RAN base station to indicate that the network slice is allowed to be accepted as DC, and sends information that the accepted network slice is allowed to be accepted as DC according to the indication information.
2. The method of claim 1, wherein prior to the CN sending information to the first RAN base station indicating the network slice accepted by the CN, comprising:
obtaining a network slice list transmitted by the first RAN base station and comprising network slices supported by neighboring base stations, wherein the neighboring base stations comprise the second RAN base station;
determining, from the network slice list, that the network slice does not belong to a network slice supported by the first RAN base station but belongs to a network slice supported by the second RAN base station.
3. The method of claim 1, wherein the method further comprises:
the CN obtains a network slice which is carried by the UE when the UE is registered in the first RAN base station and is supported by the first RAN base station;
the CN sends information to the first RAN base station, wherein the information indicates that the CN accepts the network slices supported by the first RAN base station.
4. A method for network slice processing, comprising:
a first RAN base station receives information which is sent by a CN and indicates a network slice received by the CN, wherein the network slice is a network slice which is carried by UE when the UE is registered in the first RAN base station and does not belong to the network slice supported by the first RAN base station; the first RAN base station receives information which is sent by a CN and indicates a network slice accepted by the CN, and the information comprises: the first RAN base station receives information which is sent by the CN and used for indicating that the CN directly accepts network slices which do not belong to the same base station support; or, the first RAN base station receives information sent by the CN to indicate that the network slice accepted by the CN is available as a DC; or, receiving the network slice carried by the UE when the UE is registered at the first RAN base station, determining, according to a stored network slice list including network slices supported by neighboring base stations, that the network slice is a network slice that is not supported by the first RAN base station but is supported by a neighboring base station, sending, to the CN, indication information indicating that the network slice is allowed to be accepted as a DC, and receiving, by the CN, information indicating that the accepted network slice sent by the CN according to the indication information is a DC;
based on the information, the first RAN base station establishes a DC with a second RAN base station that supports the network slice such that the UE obtains service of the network slice through the DC.
5. The method of claim 4, wherein the first RAN base station, prior to receiving information sent by a CN indicating network slices accepted by the CN, comprises:
sending a network slice list including network slices supported by neighboring base stations to the CN;
wherein the neighboring base station comprises the second RAN base station, the network slice list is used to determine that the network slice does not belong to a network slice supported by the first RAN base station but belongs to a network slice supported by a neighboring base station.
6. The method according to claim 5, wherein said sending a network slice list to the CN including network slices supported by neighboring base stations is specifically:
and the first RAN base station sends the network slice list to the CN when an NG interface is established or the first RAN base station is configured and updated.
7. The method of claim 4, wherein the method further comprises:
receiving network slices supported by the first RAN base station and carried by the UE when the UE is registered in the first RAN base station;
sending the network slices supported by the first RAN base station to the CN;
and receiving information which is sent by the CN and indicates the CN to accept the network slice supported by the first RAN base station.
8. A network device, comprising:
an obtaining unit, configured to obtain a network slice that is carried by a UE when the UE is registered in a first radio access network RAN base station and is not supported by the first RAN base station;
a sending unit, configured to send, to the first RAN base station, information indicating a network slice accepted by the network device, where the information is used for the first RAN base station to establish a dual connectivity DC with a second RAN base station, so that the UE obtains a service of the network slice through the DC, where the second RAN base station is a base station supporting the network slice;
the sending unit is further configured to send, by the network device to a first RAN base station, information indicating that the network slice directly accepted by the network device does not belong to a network slice supported by the same base station; or, the network device sends information indicating that the network slice accepted by the network device is available as a DC to a first RAN base station; or, the network device obtains indication information sent by the first RAN base station to indicate that the network slice is allowed to be accepted as DC, and sends information for accepting that the network slice is allowed to be accepted as DC according to the indication information.
9. The network device of claim 8, wherein the obtaining unit is further configured to:
obtaining a network slice list transmitted by the first RAN base station and comprising network slices supported by neighboring base stations, wherein the neighboring base stations comprise the second RAN base station;
determining, from the network slice list, that the network slice does not belong to a network slice supported by the first RAN base station but belongs to a network slice supported by the second RAN base station.
10. The network device of claim 8, wherein the obtaining unit is further configured to:
the network equipment obtains network slices which are carried by the UE when the UE is registered at the first RAN base station and are supported by the first RAN base station;
the network device sends information to the first RAN base station indicating that the network device accepts network slices supported by the first RAN base station.
11. A network device, comprising:
a receiving unit, configured to receive information, which is sent by a CN and indicates a network slice accepted by the CN, where the network slice is a network slice that is carried by the UE during registration of the network device and is not supported by the network device;
the receiving unit is further configured to receive, by the network device, information sent by the CN and used for indicating that the CN directly accepts network slices that do not belong to the same base station; or, the network device receives information sent by the CN to indicate that the network slice accepted by the CN is available as a DC; or, receiving the network slice carried by the UE when the network device registers, determining, according to a stored network slice list including network slices supported by neighboring base stations, that the network slice is a network slice which is not supported by the network device but is supported by the neighboring base stations, sending, to the CN, indication information indicating that the network slice can be made into a DC and is allowed to be accepted, and receiving, by the CN, information indicating that the accepted network slice sent according to the indication information can be made into a DC;
an establishing unit configured to establish a DC with a second RAN base station supporting the network slice based on the information, so that the UE obtains a service of the network slice through the DC.
12. The network device of claim 11, wherein the receiving unit is further configured to:
sending a network slice list including network slices supported by neighboring base stations to the CN;
wherein the neighboring base station comprises the second RAN base station, the network slice list is used to determine that the network slice does not belong to a network slice supported by the network device but belongs to a network slice supported by a neighboring base station.
13. The network device of claim 11, wherein the establishing unit is further configured to:
and the network equipment sends the network slice list to the CN when an NG interface is established or the network equipment is configured and updated.
14. The network device of claim 11, wherein the receiving unit is further configured to:
receiving a network slice which is carried by the UE when the network equipment is registered and belongs to the network equipment support;
sending the network slices supported by the network equipment to the CN;
and receiving information which is sent by the CN and indicates the CN to accept the network slices supported by the network equipment.
15. A computer device, comprising:
at least one processor, and
a memory coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor, the at least one processor performing the method of any one of claims 1-7 by executing the instructions stored by the memory.
16. A readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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