CN114302481B - Slice selection method, MEP, application server, device, and computer-readable medium - Google Patents
Slice selection method, MEP, application server, device, and computer-readable medium Download PDFInfo
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Abstract
The invention discloses a slice selection method, which comprises the following steps: receiving a first service request carrying application information sent by user equipment; determining and sending an application server identification and slice information to user equipment according to a preconfigured network slice mapping rule and application information; responding to a verification success notification message sent by an application server corresponding to the application server identifier, establishing a protocol data unit PDU session and acquiring network resources required by the network slice indicated in the slice information; and sending the identification of the PDU session to the user equipment so that the user equipment can access the network slice according to the identification of the PDU session. The UE can successfully access the network slice without carrying out signaling interaction with a plurality of network elements in the core network, thereby reducing the control plane signaling transmission path, reducing the access delay of the network slice and improving the access efficiency of the network slice. The invention also discloses an MEP, an application server, user equipment, electronic equipment and a computer readable medium.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a slice selection method, an MEP, an application server, a user equipment, an electronic device, and a computer readable medium.
Background
With the advent of the age of 5G (5 th Generation Mobile Communication Technology, fifth generation mobile communication technology), 5G as the first of new infrastructure will become a key technology to enable thousands of industries to digitally transform. In order To make the 5G network capable of being put into the field of the To Business (To Business) industry To the maximum extent, the 5G network introduces the concept of network slicing, that is, part of core network elements and cloud computing capability are sunk and deployed To the local side of an enterprise, and each enterprise has a 5G customized network belonging To itself, and the 5G customized network corresponds To a plurality of 5G slicing templates customized for enterprise applications.
The management of the customized slicing templates puts high requirements on operators, meanwhile, UE (User Equipment) needs to perform signaling interaction with multiple network elements such as AMF (Access and Mobility Management Function ), NSSF (The Network Slice Selection Function, network slice selection function), UDM (Unified Data Management, unified data management function) and PCF (Packet Control Function ) in the 5G core network area, and then can access the 5G slices needed by the application, and the signal transmission bypasses the intelligent metropolitan area network and the backbone bearing network, so that the transmission path is long and the network delay is high.
Disclosure of Invention
Therefore, the invention provides a slice selection method, an MEP, an application server, a user equipment, an electronic device and a computer readable medium, which are used for solving the problem of high access delay of network slices caused by the fact that UE needs to interact with a plurality of core network elements when selecting the network slices in the prior art.
To achieve the above object, a first aspect of the present invention provides a slice selection method, the method comprising:
receiving a first service request carrying application information sent by user equipment;
determining and sending an application server identification and slice information to the user equipment according to a preconfigured network slice mapping rule and the application information;
responding to a verification success notification message sent by the application server corresponding to the application server identifier, establishing a protocol data unit PDU session and acquiring network resources required by the network slice indicated in the slice information;
and sending the identification of the PDU session to the user equipment so that the user equipment can access the network slice according to the identification of the PDU session.
In some embodiments, before the step of receiving the first service request carrying the application information sent by the user equipment, the method further includes:
receiving an initial service request sent by the application server, and acquiring enterprise subscription information carried in the initial service request;
verifying the identity of the application server and the enterprise subscription information;
after passing the verification, acquiring a verification information set distributed by a network slice selection functional entity NSSF and a network slice selection information set;
and forwarding the verification information set and the network slice selection information set to the application server, and configuring the network slice mapping rule according to the network slice selection information set.
In some embodiments, the network resources include core network resources and radio bearer resources, and the step of establishing a PDU session and acquiring network resources required for a network slice indicated in the slice information comprises:
sending PDU session reestablishment request carrying core network resource information to user plane function entity UPF corresponding to the network slice, so that the UPF allocates core network resource and feeds back response message to current MEP;
and sending a PDU session reestablishment request carrying radio bearer resource information to a base station gNB corresponding to the network slice, so that the gNB can allocate radio bearer resources and feed back a response message to the current MEP.
In a second aspect, an embodiment of the present invention provides a slice selection method, including:
receiving a second service request sent by user equipment, and acquiring slice information carried in the second service request;
verifying the slice information according to a network slice selection information set sent in advance by the MEP;
after passing the verification, sending first verification information to the user equipment according to a verification information set sent in advance by the MEP;
receiving second verification information sent by the user equipment;
and after the second verification information is verified, sending a verification success notification message to the MEP.
In a third aspect, an embodiment of the present invention provides a slice selection method, including:
sending a first service request carrying application information to an edge computing management platform MEP;
receiving an application server identification and slicing information sent by the MEP; wherein, the application server identification and slice information are determined by the MEP according to a preconfigured network slice mapping rule and the application information;
sending a second service request carrying the slice information to an application server corresponding to the application server identifier;
transmitting second verification information to the application server according to the first verification information transmitted by the application server;
and accessing the network slice indicated in the slice information according to the PDU session identifier sent by the MEP.
In a fourth aspect, an embodiment of the present invention provides an MEP, including:
the receiving module is used for receiving a first service request carrying application information sent by user equipment; and the verification success notification message is used for receiving the verification success notification message sent by the application server corresponding to the application server identifier;
the sending module is used for determining and sending the application server identification and the slice information to the user equipment according to a preconfigured network slice mapping rule and the application information; and network resources required for establishing a PDU session and acquiring a network slice indicated in the slice information; and the user equipment is used for sending the identification of the PDU session to the user equipment so as to access the network slice according to the identification of the PDU session.
In a fifth aspect, an embodiment of the present invention provides an application server, including:
the receiving module is used for receiving a second service request sent by user equipment and acquiring slice information carried in the second service request; and receiving second verification information sent by the user equipment;
the verification module is used for verifying the slice information according to a network slice selection information set sent in advance by the MEP; for verifying the second verification information;
the sending module is used for sending first verification information to the user equipment according to the verification information set sent in advance by the MEP; and sending a verification success notification message to the MEP.
In a sixth aspect, an embodiment of the present invention provides a user equipment, where the user equipment includes:
the sending module is used for sending a first service request carrying application information to the MEP; and the second service request carrying slice information is sent to the application server corresponding to the application server identifier; and the second authentication information is sent to the application server according to the first authentication information sent by the application server;
the receiving module is used for receiving the application server identification and the slice information sent by the MEP; wherein the application server identification and the slice information are determined by the MEP according to a pre-configured network slice mapping rule and the application information;
and the access module is used for accessing the network slice indicated in the slice information according to the PDU session identifier sent by the MEP.
In a seventh aspect, an embodiment of the present invention provides an electronic device, including:
one or more processors;
a storage device having one or more programs stored thereon, which when executed by the one or more processors, cause the one or more processors to implement a slice selection method as described above;
one or more I/O interfaces coupled between the processor and the memory configured to enable information interaction of the processor with the memory.
In an eighth aspect, embodiments of the present invention provide a computer readable medium having stored thereon a computer program which when executed by a processor implements a slice selection method as described above.
The invention has the following advantages:
according to the slice selection method provided by the embodiment of the invention, the MEP is preconfigured with the network slice mapping rule, the application equipment sends a first service request carrying application information to the MEP, the access to the network slice is requested to initiate a service, the MEP determines and sends an application server identification and slice information to the user equipment according to the preconfigured network slice mapping rule and the application information so as to enable the user equipment to verify on the application server, when the application server informs the MEP that the verification is successful, the MEP establishes a PDU session and acquires network resources required by the network slice indicated in the slice information, the identification of the PDU session is sent to the user equipment, and the user equipment accesses the network slice according to the identification of the PDU session. The UE can successfully access the network slice without carrying out signaling interaction with a plurality of network elements in the core network, thereby reducing the control plane signaling transmission path, reducing the access delay of the network slice and improving the access efficiency of the network slice.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention.
Fig. 1 is a schematic flow chart of a MEP side slice selection method according to an embodiment of the present invention;
fig. 2 is a second schematic flow chart of a MEP side slice selection method according to an embodiment of the present invention;
fig. 3 is a flow chart of an application server side slice selection method according to an embodiment of the present invention;
fig. 4 is a flow chart of a user equipment side slice selection method according to an embodiment of the present invention;
FIG. 5 is a flowchart of a slice selection method according to an embodiment of the present invention;
fig. 6 is a schematic block diagram of an MEP according to an embodiment of the present invention;
fig. 7 is a schematic block diagram of an application server according to an embodiment of the present invention;
fig. 8 is a schematic block diagram of a user equipment according to an embodiment of the present invention;
fig. 9 is a schematic block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The terms "comprises," "comprising," and/or "including" when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Embodiments of the invention may be described with reference to plan and/or cross-sectional illustrations that are schematic illustrations of idealized embodiments of the invention. Accordingly, the example illustrations may be modified in accordance with manufacturing techniques and/or tolerances.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present invention and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Currently, in the 3GPP (3 rd Generation Partnership Project, third generation partnership project) technical solution, the access selection policy of the 5G network slice is as follows:
1) The UE carries NSSAI (Network Slice Selection Assistance Information, network slice selection supporting information) to send a network slice access request to the initial AMF;
2) The initial AMF sends a message to the UDM to acquire slice subscription data of a user;
3) The initial AMF sends a message to NSSF to acquire a target AMF and network service parameters corresponding to NSSAI slices requested by a user;
4) The initial AMF seeks a routing address of the target AMF to the NRF (NF Repository Function, network storage function);
5) The initial AMF sends a redirection request to the target AMF and carries network slice related information;
6) The target AMF initiates a redirection request to network elements such as gNB (5G base station), SMF (Session Management Function ), UPF (User Plane Function, user plane function) and the like, and updates PDU (Protocol Data Unit ) session related parameter indexes;
7) And finishing the access selection of the network slice.
The access selection policy of this network slice mainly has the following drawbacks: according to the existing network slice signaling interaction flow, the UE needs to perform signaling interaction with a plurality of network elements such as AMF, NSSF, UDM and PCF in the 5G core network area, and the core network side provides services for the UE according to the multi-dimensional network slice requirement information carried by the UE, such as Application ID (Application identifier), service Descriptor (service descriptor), network Requirement (network requirement), etc., by using correct network element functional components and network parameters in the slice.
In view of the above, an embodiment of the present invention provides a slice selection method, where an MEP configures in advance a mapping relationship between a configuration application and network slice auxiliary information, allocates an application server and slice information to a user equipment according to the mapping relationship, and performs authentication and security verification on the user equipment by the application server, so that UE does not need to perform signaling interaction with multiple network elements in a core network, thereby effectively reducing time delay.
Accordingly, in a first aspect, an embodiment of the present invention provides a slice selection method, which may be applied to an MEP (Mobile Edge Platform, edge computing management platform). As shown in fig. 1, the method may include the steps of:
in step S11, a first service request carrying application information sent by a user equipment is received.
In step S12, an application server identification and slice information are determined and sent to the user equipment according to pre-configured network slice mapping rules and application information.
In step S13, in response to the authentication success notification message sent by the application server corresponding to the application server identification, a PDU session is established and network resources required for the network slice indicated in the slice information are acquired.
In step S14, the identity of the PDU session is sent to the user equipment for the user equipment to access the network slice according to the identity of the PDU session.
The Application information may be any information that can be used for identification, for example, APP ID (Application, identity Document); the application server identifier may be any information that can perform an identifying function on the application server Enterprise Server; the slice information may include S-nsai (Single Network Slice Selection Assistance Information, independent network slice selection support information and network slice parameters matched to the S-nsai, the S-nsai in the slice information indicates a network slice, and the PDU session may be identified as a PDU ID.
As can be seen from the foregoing steps S11 to S14, according to the slice selection method provided by the embodiment of the present invention, the MEP pre-configures a network slice mapping rule, the application device sends a first service request carrying application information to the MEP, requests to access a network slice to initiate a service, the MEP determines and sends an application server identifier and slice information to the user device according to the pre-configured network slice mapping rule and the application information, so that the user device performs authentication on the application server, and when the application server notifies the MEP that authentication is successful, the MEP establishes a PDU session and acquires network resources required by the network slice indicated in the slice information, sends an identifier of the PDU session to the user device, and the user device accesses the network slice according to the identifier of the PDU session. The UE can successfully access the network slice without carrying out signaling interaction with a plurality of network elements in the core network, thereby reducing the control plane signaling transmission path, reducing the access delay of the network slice and improving the access efficiency of the network slice.
In the existing 3GPP technical solution, the following drawbacks exist in the access selection policy of the 5G network slice: the operator needs to maintain a large amount of slice subscription data, the enterprise cannot independently manage the network slice templates, the enterprise needs to sign up for each 5G user independently to obtain the slice subscription data, the SIM (Subscriber Identity Module, client identification module) card is bound with the user equipment, the subscription information of the user equipment cannot be flexibly changed, and adverse effects are brought to the actual use of the 5G network slice. In view of this, the embodiment of the present invention proposes that the application server of the enterprise may provide subscription information to the MEP instead of providing subscription information for the user by the enterprise, and when the user requests access to the network slice, the application server may verify the user.
Accordingly, in some embodiments, before the step of receiving the first service request carrying the application information sent by the ue (i.e. step S11), as shown in fig. 2, the method may further include the following steps:
in step S21, an initial service request sent by an application server is received, and enterprise subscription information carried in the initial service request is obtained.
In step S22, the identity of the application server and the enterprise subscription information are verified.
After the authentication is passed in step S23, the NSSF assigned authentication information set and the network slice selection information set are acquired.
In step S24, the set of authentication information and the set of network slice selection information are forwarded to the application server, and the network slice mapping rules are configured according to the set of network slice selection information.
The application server is owned by an enterprise, the network slice selection information set may be a network slice security Token set Token Pool, and the network slice selection information set may be an nsai Pool.
In some embodiments, the step of obtaining the authentication information set and the network slice selection information set of NSSF allocation (i.e. step S23) may include the steps of: sending a service request carrying current MEP information and enterprise information corresponding to an application server to NSSF; and acquiring the NSSF distributed Token Pool and NSSAI Pool through the control plane signaling data.
In some embodiments, after the step of configuring the network slice mapping rule according to the network slice selection information set (i.e., step S24), the method may further include the steps of: and planning and configuring each NSSAI slice parameter.
As can be seen from the above steps S21 to S24, according to the slice selection method provided by the embodiment of the present invention, the application server provides enterprise subscription information to the MEP, the MEP verifies the identity of the application server and the enterprise subscription information, after the verification is passed, the MEP obtains a verification information set and a network slice selection information set allocated by NSSF, forwards the verification information set and the network slice selection information set to the application server, and configures a network slice mapping rule according to the network slice selection information set, so that, subsequently, when the user equipment requests to access a network slice, the MEP can determine and send application server identification and slice information to the user equipment according to the preconfigured network slice mapping rule and application information, and verifies the user equipment by the application server verification information set and the network slice selection information set, when the application server notifies that the MEP is successful, the MEP establishes a PDU session and obtains network resources required by the network slice indicated in the slice information, and sends the identification of the PDU session to the user equipment, and the user equipment accesses the network slice according to the identification of the PDU session. The UE can successfully access the network slice without carrying out signaling interaction with a plurality of network elements in the core network, thereby reducing the control plane signaling transmission path, reducing the access delay of the network slice and improving the access efficiency of the network slice. The application server of the enterprise does not need to maintain a large amount of slice subscription data of users, and the user equipment can flexibly use the network slice, thereby being beneficial to popularization of the network slice.
In some embodiments, the network resources may include core network resources and radio bearer resources, and the step of establishing a PDU session and acquiring network resources required for the network slice indicated in the slice information (i.e., as described in step S13) may include the steps of: transmitting PDU session reestablishment request carrying core network resource information to UPF corresponding to network slice, so that UPF allocates core network resource and feeds back response message to current MEP; and sending a PDU session reestablishment request carrying the radio bearer resource information to the gNB corresponding to the network slice, so that the gNB can allocate the radio bearer resource and feed back a response message to the current MEP.
The UPF corresponding to the network slice is a UPF of a service range to which the network slice belongs, and the gNB corresponding to the network slice is a gNB of a service range to which the network slice belongs, and the response message may be an Ack (acknowledgement) response.
The MEP initiates a PDU session reestablishment request to the UPF of the service range of the network slice, and informs the network slice of the required core network resources; and the UPF allocates corresponding resources under the condition that resources such as gateway exit bandwidth and the like are available, and feeds back Ack response to the MEP. The MEP initiates a PDU session reestablishment request to the gNB of the service range to which the slice belongs, and informs the slice of the required radio bearer resource; and the gNB allocates corresponding resources and feeds back Ack response to the MEP under the condition that the radio bearer resources are available.
In a second aspect, an embodiment of the present invention further provides a slice selection method, which may be applied to an application server, as shown in fig. 3, where the method may include the following steps:
in step S31, a second service request sent by the user equipment is received, and slice information carried in the second service request is obtained.
In step S32, slice information is verified according to the network slice selection information set sent in advance by the MEP.
After the authentication is passed, first authentication information is sent to the user equipment according to the authentication information set sent in advance by the MEP in step S33.
In step S34, second authentication information sent by the user equipment is received.
In step S35, after the second verification information passes, a verification success notification message is sent to the MEP, so that the MEP establishes a PDU session and obtains network resources required by the network slice indicated in the slice information in response to the verification success notification message, and an identifier of the PDU session is sent to the user equipment, so that the user equipment accesses the network slice according to the identifier of the PDU session.
The network slice selection information set nsai Pool records each slice selection auxiliary information allocated by NSSF, and the application server can verify the authenticity of the slice information sent by the user equipment according to the slice selection auxiliary information, i.e. verify whether the slice information sent by the user equipment is allocated by MEP. Each network slice security Token allocated by NSSF is recorded in the Token Pool of the verification information set, the Token can be used by a plurality of user equipment, an application server can randomly select one Token which is not used by other user equipment from the Token as first verification information to be sent to the user equipment, after the user equipment receives the first verification information, the digital identity signature verification Token is calculated and is used as second verification information to be sent to the application server, the user equipment and the application server can negotiate an asymmetric key in advance, and the application server can adopt an asymmetric encryption algorithm to verify the second verification information so as to ensure the security of network slice access.
As can be seen from the foregoing steps S31 to S35, according to the slice selection method provided by the embodiment of the present invention, an application server receives a second service request sent by a user equipment, obtains slice information carried in the second service request, verifies the slice information according to a network slice selection information set sent in advance by an MEP, sends first verification information to the user equipment according to the verification information set sent in advance by the MEP after verification is passed, receives second verification information sent by the user equipment, sends a verification success notification message to the MEP after verification of the second verification information is passed, so that the MEP can establish a PDU session in response to the verification success notification message, obtain network resources required by a network slice indicated in the slice information, and sends an identifier of the PDU session to the user equipment so that the user equipment can access the network slice according to the identifier of the PDU session. The UE can successfully access the network slice without carrying out signaling interaction with a plurality of network elements in the core network, thereby reducing the control plane signaling transmission path, reducing the access delay of the network slice and improving the access efficiency of the network slice.
In a third aspect, an embodiment of the present invention provides a slice selection method, which may be applied to a user equipment. As shown in fig. 4, the method may include the steps of:
in step S41, a first service request carrying application information is sent to the MEP.
In step S42, the application server identification and slice information sent by the MEP are received. Wherein the application server identification and slice information are determined by the MEP according to pre-configured network slice mapping rules and application information.
In step S43, a second service request carrying slice information is sent to the application server corresponding to the application server identifier.
In step S44, second authentication information is transmitted to the application server according to the first authentication information transmitted by the application server.
In step S45, the network slice indicated in the slice information is accessed according to the PDU session identification sent by the MEP.
The first service request and the second service request are both used for requesting access to the network slice, but the carried information is not the same. The second authentication information is calculated by the user equipment according to the first authentication information. After the user equipment accesses the network slice indicated in the slice information according to the PDU session identification sent by the MEP, the wireless and session bearer can be established, the normal service flow is initiated, and the uplink and downlink data service transmission is performed.
As can be seen from the above steps S41 to S44, according to the slice selection method provided by the embodiment of the present invention, the user equipment sends a first service request carrying application information to the MEP, and receives the application server identifier and slice information sent by the MEP. The application server identification and the slice information are determined by the MEP according to a preset network slice mapping rule and application information, a second service request carrying the slice information is sent to an application server corresponding to the application server identification, the second verification information is sent to the application server according to the first verification information sent by the application server, and the network slice indicated in the slice information is accessed according to the PDU session identification sent by the MEP. The UE can successfully access the network slice without carrying out signaling interaction with a plurality of network elements in the core network, thereby reducing the control plane signaling transmission path, reducing the access delay of the network slice and improving the access efficiency of the network slice.
The slice selection method provided by the present invention is described in detail below in connection with one specific embodiment.
As shown in fig. 5, the slice selection method provided by the present invention may include the following steps:
s51, an application server Enterprise Server edge computing management platform MEP in the enterprise network initiates an initial service request, wherein the initial service request carries enterprise subscription information;
s52, MEP performs identity verification and enterprise subscription information verification on Enterprise Server, and initiates an initial service request to NSSF, wherein the initial service request carries MEP information and enterprise information corresponding to Enterprise Server;
s53, the MEP acquires a network slice security Token Pool and a network slice selection information Pool NSSAI Pool distributed by NSSF through control plane signaling data, wherein the Token Pool can be used by multiple UE;
s54, the MEP forwards Token Pool and NSSAI Pool to Enterprise Server;
s55, the enterprise manager completes the mapping rule between the network slice and the application information, namely the mapping relation configuration between the App and the NSSAI according to the NSSAI Pool configuration on the MEP; meanwhile, the parameter planning and configuration of each NSSAI slice are completed on the MEP;
s56, the user equipment UE initiates a first service request to the MEP through the 5G base station gNB, wherein the first service request carries application information APP ID;
s57, according to the UE and the APP ID, the MEP matches with a network slice mapping rule, and informs the UE of Enterpri se Server, S-NSSAI of a service range to which the service application belongs and network slice parameters matched with the S-NSSAI through downlink signaling;
s58, the UE sends a second service request to the target Enterprise Server, wherein the second service request carries S-NSSAI and network slice parameters matched with the S-NSSAI;
s59, enterprise Server sends a random network slice security token, i.e. first authentication information, to the UE;
s60, the UE obtains a digital identity signature verification token, namely second verification information, according to deduction calculation of the random network slice security token and sends the second verification information to Enterprise Server, and the process can refer to an asymmetric encryption algorithm;
s61, enterprise Server, signature verification is carried out on the digital identity signature verification token, so that the security of slice access selection is ensured;
s62, enterprise Server sends a verification success notification message to the MEP;
s63, the MEP initiates a PDU session reestablishment request to the UPF of the service range of the network slice, and informs the network slice of the required core network resources; the UPF allocates corresponding resources under the condition that resources such as gateway exit bandwidth and the like are available, and feeds back Ack response to the MEP;
s64, the MEP initiates a PDU session reestablishment request to the gNB of the service range to which the network slice belongs, and informs the network slice of the required radio bearer resources; the gNB allocates corresponding resources and feeds back Ack response to the MEP under the condition that the radio bearer resources are available;
s65, the MEP informs the UE of the PDU session ID (Session ID) after the update of the bearer resources;
and S66, the UE accesses the corresponding 5G network slice component according to the new Session ID, establishes wireless and Session bearers, initiates a normal service flow, and transmits uplink and downlink data services.
The above steps of the methods are divided, for clarity of description, and may be combined into one step or split into multiple steps when implemented, so long as they include the same logic relationship, and they are all within the protection scope of this patent; it is within the scope of this patent to add insignificant modifications to the algorithm or flow or introduce insignificant designs, but not to alter the core design of its algorithm and flow.
Based on the same technical concept, in a fourth aspect, an embodiment of the present invention further provides an MEP, as shown in fig. 6, where the MEP may include:
a receiving module 101, configured to receive a first service request carrying application information sent by a user equipment; and the verification success notification message is used for receiving the verification success notification message sent by the application server corresponding to the application server identifier;
a sending module 102, configured to determine and send the application server identifier and slice information to the user equipment according to a preconfigured network slice mapping rule and the application information; and network resources required for establishing a PDU session and acquiring a network slice indicated in the slice information; and the user equipment is used for sending the identification of the PDU session to the user equipment so as to access the network slice according to the identification of the PDU session.
In some embodiments, the receiving module 101 is further configured to receive an initial service request sent by the application server, and obtain enterprise subscription information carried in the initial service request; the sending module 102 is further configured to forward the verification information set and the network slice selection information set to the application server; the MEP can also comprise a verification module, an acquisition module and a configuration module, wherein the verification module is used for verifying the identity of the application server and the enterprise subscription information; the acquisition module is used for acquiring an authentication information set distributed by the network slice selection functional entity NSSF after the authentication is passed; the configuration module is used for configuring the network slice mapping rule according to the network slice selection information set.
In some embodiments, the network resources include core network resources and radio bearer resources, and the sending module 102 is configured to:
sending PDU session reestablishment request carrying core network resource information to user plane function entity UPF corresponding to the network slice, so that the UPF allocates core network resource and feeds back response message to current MEP;
and sending a PDU session reestablishment request carrying radio bearer resource information to a base station gNB corresponding to the network slice, so that the gNB can allocate radio bearer resources and feed back a response message to the current MEP.
In a fifth aspect, an embodiment of the present invention further provides an application server, as shown in fig. 7, where the application server may include:
a receiving module 201, configured to receive a second service request sent by a user equipment, and obtain slice information carried in the second service request; and receiving second verification information sent by the user equipment;
a verification module 202, configured to verify the slice information according to a network slice selection information set sent in advance by the MEP; for verifying the second verification information;
a sending module 203, configured to send first authentication information to the user equipment according to an authentication information set sent in advance by the MEP; and sending a verification success notification message to the MEP.
In a sixth aspect, an embodiment of the present invention further provides a user equipment, as shown in fig. 8, where the user equipment may include:
a sending module 301, configured to send a first service request carrying application information to an MEP; and the second service request carrying slice information is sent to the application server corresponding to the application server identifier; and the second authentication information is sent to the application server according to the first authentication information sent by the application server;
a receiving module 302, configured to receive the application server identifier and the slice information sent by the MEP; wherein the application server identification and the slice information are determined by the MEP according to a pre-configured network slice mapping rule and the application information;
and an access module 303, configured to access the network slice indicated in the slice information according to the PDU session identifier sent by the MEP.
It should be clear that the invention is not limited to the specific arrangements and processes described in the foregoing embodiments and shown in the drawings. For convenience and brevity of description, detailed descriptions of known methods are omitted herein, and specific working processes of the systems, modules and units described above may refer to corresponding processes in the foregoing method embodiments, which are not repeated herein.
As shown in fig. 9, an embodiment of the present invention provides an electronic device, which includes:
one or more processors 901;
a memory 902 having one or more programs stored thereon, which when executed by one or more processors cause the one or more processors to implement the slice selection method of any of the above;
one or more I/O interfaces 903, coupled between the processor and the memory, are configured to enable information interaction of the processor with the memory.
Among them, the processor 901 is a device having data processing capability, including but not limited to a Central Processing Unit (CPU) or the like; memory 902 is a device having data storage capability including, but not limited to, random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically charged erasable programmable read-only memory (EEPROM), FLASH memory (FLASH); an I/O interface 903 is connected between the processor 901 and the memory 902 to enable information interaction between the processor 901 and the memory 902, including but not limited to a data Bus (Bus), etc.
In some embodiments, processor 901, memory 902, and I/O interface 903 are connected to each other via a bus, which in turn connects to other components of the computing device.
The present embodiment also provides a computer readable medium, on which a computer program is stored, where the program when executed by a processor implements the slice selection method provided in the present embodiment, and in order to avoid repetitive description, specific steps of the slice selection method are not described herein.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, functional modules/units in the apparatus, and methods of the invention described above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed cooperatively by several physical components. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
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.
Those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the embodiments and form different embodiments.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (6)
1. A method of slice selection, the method comprising:
the user equipment sends a first service request carrying application information to an edge computing management platform MEP;
the MEP receives a first service request carrying application information sent by user equipment; determining and sending an application server identification and slice information to the user equipment according to a preconfigured network slice mapping rule and the application information;
the user equipment receives the application server identification and the slicing information sent by the MEP; wherein, the application server identification and slice information are determined by the MEP according to a preconfigured network slice mapping rule and the application information; sending a second service request carrying the slice information to an application server corresponding to the application server identifier;
the application server receives a second service request sent by user equipment and acquires slice information carried in the second service request; verifying the slice information according to a network slice selection information set sent in advance by the MEP; after passing the verification, sending first verification information to the user equipment according to a verification information set sent in advance by the MEP;
the user equipment sends second verification information to the application server according to the first verification information sent by the application server;
the application server receives second verification information sent by the user equipment; after the second verification information is verified, sending a verification success notification message to the MEP;
responding to the verification success notification message sent by the application server corresponding to the application server identifier by the MEP, establishing a protocol data unit PDU session and acquiring network resources required by the network slice indicated in the slice information; and sending the identification of the PDU session to the user equipment so that the user equipment can access the network slice according to the identification of the PDU session.
2. The method according to claim 1, wherein before the step of receiving the first service request carrying application information sent by the user equipment, the method further comprises:
receiving an initial service request sent by the application server, and acquiring enterprise subscription information carried in the initial service request;
verifying the identity of the application server and the enterprise subscription information;
after passing the verification, acquiring a verification information set distributed by a network slice selection functional entity NSSF and a network slice selection information set;
and forwarding the verification information set and the network slice selection information set to the application server, and configuring the network slice mapping rule according to the network slice selection information set.
3. The method of claim 1, wherein the network resources comprise core network resources and radio bearer resources, and wherein the step of establishing a PDU session and acquiring network resources required for a network slice indicated in the slice information comprises:
sending PDU session reestablishment request carrying core network resource information to user plane function entity UPF corresponding to the network slice, so that the UPF allocates core network resource and feeds back response message to current MEP;
and sending a PDU session reestablishment request carrying radio bearer resource information to a base station gNB corresponding to the network slice, so that the gNB can allocate radio bearer resources and feed back a response message to the current MEP.
4. The slice selecting device is characterized by comprising an edge computing management platform MEP, an application server and user equipment;
the MEP includes:
the receiving module is used for receiving a first service request carrying application information sent by user equipment; and the verification success notification message is used for receiving the verification success notification message sent by the application server corresponding to the application server identifier;
the sending module is used for determining and sending the application server identification and the slice information to the user equipment according to a preconfigured network slice mapping rule and the application information; and network resources required for establishing a protocol data unit PDU session and acquiring a network slice indicated in the slice information; and the user equipment is used for sending the identification of the PDU session to the user equipment so that the user equipment can access the network slice according to the identification of the PDU session;
the application server includes:
the receiving module is used for receiving a second service request sent by user equipment and acquiring slice information carried in the second service request; and receiving second verification information sent by the user equipment;
the verification module is used for verifying the slice information according to a network slice selection information set sent in advance by the MEP; for verifying the second verification information;
the sending module is used for sending first verification information to the user equipment according to the verification information set sent in advance by the MEP; the method comprises the steps of sending a verification success notification message to the MEP;
the user equipment comprises:
the sending module is used for sending a first service request carrying application information to the MEP; and the second service request carrying slice information is sent to the application server corresponding to the application server identifier; and the second authentication information is sent to the application server according to the first authentication information sent by the application server;
the receiving module is used for receiving the application server identification and the slice information sent by the MEP; wherein the application server identification and the slice information are determined by the MEP according to a pre-configured network slice mapping rule and the application information;
and the access module is used for accessing the network slice indicated in the slice information according to the PDU session identifier sent by the MEP.
5. An electronic device, comprising:
one or more processors;
storage means having stored thereon one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the slice selection method according to any one of claims 1-3;
one or more I/O interfaces coupled between the processor and the memory configured to enable information interaction of the processor with the memory.
6. A computer readable medium having stored thereon a computer program which when executed by a processor implements a slice selection method according to any one of claims 1-3.
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| CN114710805B (en) * | 2022-04-11 | 2024-02-06 | 中国电信股份有限公司 | Interaction method and device for slice service data, electronic equipment and readable medium |
| CN115243394B (en) * | 2022-05-17 | 2024-02-13 | 佰路威科技(北京)有限公司 | Communication method, device, equipment and medium based on network slice |
| CN116032573B (en) * | 2022-12-16 | 2024-02-27 | 中国联合网络通信集团有限公司 | Method, terminal, platform, equipment and medium for multi-user sharing slice service |
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