WO2017206183A1 - 一种网络切片的确定方法、装置及系统 - Google Patents

一种网络切片的确定方法、装置及系统 Download PDF

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Publication number
WO2017206183A1
WO2017206183A1 PCT/CN2016/084807 CN2016084807W WO2017206183A1 WO 2017206183 A1 WO2017206183 A1 WO 2017206183A1 CN 2016084807 W CN2016084807 W CN 2016084807W WO 2017206183 A1 WO2017206183 A1 WO 2017206183A1
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Prior art keywords
node
identifier
nsf
slice
terminal
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PCT/CN2016/084807
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English (en)
French (fr)
Inventor
侯义合
王岩
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP16903568.0A priority Critical patent/EP3462691B1/en
Priority to CN201680086086.1A priority patent/CN109314675A/zh
Priority to PCT/CN2016/084807 priority patent/WO2017206183A1/zh
Publication of WO2017206183A1 publication Critical patent/WO2017206183A1/zh
Priority to US16/204,981 priority patent/US10798646B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/24—Querying
    • G06F16/245—Query processing
    • G06F16/2458—Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
    • G06F16/2471—Distributed queries
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, an apparatus, and a system for determining a network slice.
  • the access network node can forward the access request of the terminal to the default core network node, because the information of different dedicated core networks is shared among the core network nodes. Therefore, the default core network node can determine the dedicated core network to which the terminal belongs according to the information of different dedicated core networks.
  • the access network node after the access network node receives the access request from the terminal, the different network slices are isolated from each other and are not perceived by each other. Therefore, the access network node cannot directly slice through a certain network.
  • the core network node within the network determines the network slice to which the terminal belongs, and thus cannot access the network slice to which the terminal belongs.
  • Embodiments of the present invention provide a method, an apparatus, and a system for determining a network slice, which can determine a network slice to which a terminal belongs in a 5G network.
  • an embodiment of the present invention provides a method for determining a network slice, where
  • the NSF (Network Selection Function) node acquires the identity of the terminal; the NSF node sends the identity to the HSS (Home Subscriber Server); and the NSF node receives the HSS.
  • a slice identifier of the network slice the slice identifier is determined by the HSS according to the foregoing identity identifier; and finally, the NSF node determines, according to the slice identifier, a network slice to which the terminal belongs.
  • the NSF node can feed back the slice identifier of the network slice to which the terminal belongs to the access network node, so that the access network node accesses the network slice indicated by the slice identifier, that is, in the heterogeneous network slicing system.
  • the process of implementing the terminal accessing the network slice to which the terminal belongs.
  • the NSF node stores a correspondence between a slice identifier of the network slice and network slice attribute information, where each network slice attribute information includes: a network slice corresponding to the network slice attribute information. At least one of the supported terminal types, service types, and location ranges;
  • the NSF node determines, according to the slice identifier, the network slice to which the terminal belongs, and the NSF node queries the corresponding relationship between the slice identifier of the network slice and the network slice attribute information that is pre-stored.
  • Network segment attribute information the NSF node acquires auxiliary information of the terminal, the auxiliary information includes at least one of a terminal type of the terminal, a service type requested by the terminal, or location information of the terminal; if the auxiliary information satisfies the network If the attribute information is sliced, the NSF node determines the network slice indicated by the slice identifier as the network slice to which the terminal belongs.
  • the network slice that satisfies the network slice attribute information may be determined for the terminal, and the network slice is determined as the network slice to which the terminal belongs, thereby avoiding The terminal that conforms to the network slice attribute information accesses the network slice to reduce the reliability of the terminal access network slice.
  • the correspondence between the slice identifier of the network slice and the identifier of the core network entry node in the network slice is pre-stored in the NSF node;
  • the NSF node determines, according to the slice identifier, the network to which the terminal belongs. After the sharding, the NSF node determines, according to the correspondence between the slice identifier of the pre-stored network slice and the identifier of the core network entry node in the network slice, the identifier of the core network entry node corresponding to the slice identifier; The NSF node sends the identifier of the core network ingress node to the access network node, where the identifier of the core network ingress node is used to indicate that the access network node accesses the core network ingress node corresponding to the identifier of the core network ingress node.
  • the NSF node obtains the identity of the terminal, and the NSF node receives the identity of the terminal sent by the access network node through the unified interface.
  • the access network node does not need to follow the various interfaces used when the access network node interacts with the core network node, and sends the initial attach request of the terminal to the NSF node intact, but adopts a unified interface.
  • the specified protocol format is used for sending and receiving messages, so that the interface setting between the access network node and the NSF node is simpler and easier.
  • the NSF node acquires the identity of the terminal, and the NSF node receives the initial attach request of the terminal sent by the access network node, where the initial attach request carries the identity of the terminal; the NSF The node performs signaling analysis on the initial attach request to obtain an identity of the terminal.
  • the NSF node has the function of signaling and parsing different signaling types in the heterogeneous network slicing system, so that the NSF node can be used for the initial attach request of different signaling types forwarded by the access network node.
  • a correspondence between a signaling type and a parsing identifier of the signaling type is pre-stored in the NSF node; at this time, the NSF node performs signaling analysis on the initial attach request to obtain the
  • the identifier of the terminal includes: determining, by the NSF node, a resolution identifier corresponding to the signaling type of the initial attach request according to a correspondence between the signaling type and the parsing identifier of the signaling type; the NSF node Decoding the initial attach request according to the parsing identifier to obtain the final The identity of the end.
  • the method further includes: receiving, by the NSF node, the initial attach request sent by the access network node.
  • the analytic identifier corresponding to the signaling type at this time, the NSF node performs signaling analysis on the initial attach request, and obtains the identity of the terminal, including: the NSF node performs signaling analysis on the initial attach request according to the parsing identifier. Get the identity of the terminal.
  • the foregoing resolution identifier is a transport layer port number of the initial attach request.
  • a correspondence between a slice identifier of a network slice and network slice attribute information is pre-stored in the NSF node, and each network slice attribute information includes: a network slice corresponding to the network slice attribute information. At least one of the supported terminal types, service types, and location ranges.
  • the acquiring unit is further configured to acquire auxiliary information of the terminal, where the auxiliary information includes at least one of a terminal type of the terminal, a service type requested by the terminal, and location information of the terminal; And the network slice attribute information corresponding to the slice identifier is used according to the correspondence between the slice identifier of the network slice and the network slice attribute information that is stored in advance; if the auxiliary information satisfies the network slice attribute information, the slice is sliced The network slice indicated by the identity is determined to be the network slice to which the terminal belongs.
  • the correspondence between the slice identifier of the network slice and the identifier of the core network entry node in the network slice is pre-stored in the NSF node.
  • the determining unit is further configured to determine, according to a pre-stored correspondence between the slice identifier of the network slice and the identifier of the core network ingress node in the network slice, the identifier of the core network entry node corresponding to the slice identifier. ; the sending unit is also used for The identifier of the core network ingress node is sent to the access network node, where the identifier of the core network ingress node is used to indicate that the access network node accesses the core network ingress node corresponding to the identifier of the core network ingress node.
  • the acquiring unit is specifically configured to receive, by using a unified interface, an identity of the terminal sent by the access network node.
  • a correspondence between a signaling type and a resolution identifier of the signaling type is pre-stored in the NSF node, where the parsing unit is specifically configured to use the signaling type pre-stored. Determining a correspondence between the resolution identifiers of the signaling type, and determining a resolution identifier corresponding to the signaling type of the initial attachment request; performing signaling analysis on the initial attachment request according to the resolution identifier, to obtain an identity identifier of the terminal.
  • the obtaining unit is further configured to receive, by the access network node, a parsing identifier corresponding to the signaling type of the initial attach request, where the parsing unit is specifically configured to: according to the parsing identifier, The initial attach request performs signaling analysis to obtain an identity of the terminal.
  • an embodiment of the present invention provides an NSF node, including: a processor, a memory, a bus, and a communication interface; the memory is configured to store a computer execution instruction, and the processor is connected to the memory through the bus, when the NSF While the node is running, the processor executes the computer-executable instructions stored by the memory to cause the NSF node to perform the network switching method of any of the first aspects.
  • FIG. 1 is a schematic structural diagram of a system for determining a network slice according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram 1 of interaction of a method for determining a network slice according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a computer device according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram 2 of interaction of a method for determining a network slice according to an embodiment of the present disclosure
  • FIG. 8 is a schematic structural diagram 2 of an NSF according to an embodiment of the present invention.
  • first and second are used for descriptive purposes only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first” and “second” may include one or more of the features either explicitly or implicitly. In the description of the present invention, "a plurality” means two or more unless otherwise stated.
  • Embodiments of the present invention provide a method for determining a network slice, which can be applied to a system for determining a network slice as shown in FIG. 1.
  • the system includes a RAN (Radio Access Network) node 01, such as an eNodeB base station, an NSF node 02, an HSS 03, and a Core Net node 04, such as an MME (Mobility Management Entity).
  • RAN Radio Access Network
  • NSF node 02 such as an eNodeB base station
  • HSS 03 HSS 03
  • MME Mobility Management Entity
  • Each of the network slices may be composed of one or more core network nodes 04 for implementing a service function of a specific application scenario or a service model.
  • the network slice 1 is used to provide a high-definition video service
  • the network slice 2 is used for signing a contract.
  • Each terminal of the car network provides services, and each access network node 01 can directly interact with terminals belonging to different network slices, that is, the terminal can access different network slices in the form of a shared access network.
  • the foregoing NSF node 02 can perform the determining method of the network slice provided in the embodiment of the present invention as an independent network element, or the NSF node 02 can also It can be integrated into any network element device in the existing network architecture in the form of a function node.
  • the NSF node 02 can be integrated in the HSS 03, so that the HSS 03 implements the operations and functions of the following NSF node 02, The embodiment of the invention does not limit this.
  • the terminal involved in the embodiment of the present invention refers to any device that is ready to access the network slice to which it belongs, for example, a mobile phone, an in-vehicle device, or a notebook computer, which is not limited in this embodiment of the present invention.
  • the NSF node 02 may receive an initial attach request sent by the access network node 01, and obtain an identity of the terminal.
  • the identity identifier is an international mobile subscriber identity of the terminal (International Mobile Subscriber Identification Number (IMSI); further, the NSF node 02 sends the identity identifier to the HSS 03, so that the HSS 03 determines, according to the identity identifier, the network slice to which the terminal belongs, that is, the network slice to which the terminal subscribes; the network to be determined by the HSS 03
  • the slice identifier of the slice is sent to the NSF node 02, so that the NSF node 02 can determine the network slice to which the terminal belongs according to the slice identifier.
  • the subsequent NSF node 02 can feedback the slice identifier of the determined network slice to which the terminal belongs.
  • the access network node 01 can access the network slice indicated by the slice identifier of the determined network slice.
  • the access network node 01 after receiving the initial attach request sent by the terminal, the access network node 01 directly parses the initial attach request according to the signaling type of the initial attach request, and obtains the terminal's The identity is sent and sent to the NSF node 02 so that the NSF node 02 sends the identity to the HSS 03 to cause the HSS 03 to determine the network slice to which the terminal belongs.
  • FIG. 3 is a schematic diagram of a computer device according to an embodiment of the present invention.
  • the computer device 100 comprises at least one processor 11, a communication bus 12, a memory 13 and at least one communication interface 14.
  • the processor 11 can be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present invention.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication bus 12 can include a path for communicating information between the components described above.
  • the communication interface 14 uses devices such as any transceiver for communicating with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), and the like.
  • RAN Radio Access Network
  • WLAN Wireless Local Area Networks
  • the memory 13 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory can be stored independently and connected to the processor via a communication bus.
  • the memory can also be integrated with the processor.
  • the memory 13 is used to store application code for executing the solution of the present invention, and is controlled by the processor 11.
  • the processor 11 is configured to execute application code stored in the memory 13.
  • the processor 11 in the NSF node 02 can acquire the identity of the terminal through the communication interface 14. Further, the identity identifier is sent to the HSS 03 through the communication interface 14, and the HSS 03 determines the identifier of the network slice to which the terminal belongs according to the identity identifier, and sends the slice identifier of the network slice to the NSF node 02; the NSF node 02 The slice identifier of the network slice sent by the HSS 03 is received through the communication interface 14, and the processor 11 determines the network slice to which the terminal belongs according to the slice identifier.
  • the memory 13 in the NSF node 02 can store the correspondence between the slice identifier of the network slice and the network slice attribute information, where the network slice attribute information includes: supported by the network slice corresponding to the network slice attribute information. At least one of the terminal type, the service type, and the location range, so that the processor 11 determines, according to the slice identifier, the network slice to which the terminal belongs, and further determines whether the terminal is a terminal supported by the network slice, thereby A terminal that does not comply with the network slice attribute information is prevented from accessing the network slice.
  • the correspondence between the slice identifier of each network slice and the identifier of the core network entry node in the network slice may also be stored, so that the processor 11 determines that the terminal belongs to After the network is sliced, the identifier of the core network ingress node in the network slice may be further determined according to the determined slice identifier of the network slice, so that the access network node 01 accesses the terminal to the corresponding core network entry node in the network slice.
  • processor 11 may include one or more CPUs, such as CPU0 and CPU1 in FIG.
  • computer device 100 may also include output device 15 and input device 16.
  • the output device 15 is in communication with the processor 11 and can display information in a variety of ways.
  • the output device 15 can be a liquid crystal display (LCD), a light emitting diode (light emitting diode) Diode, LED) display device, cathode ray tube (CRT) display device, or projector (projector).
  • Input device 16 is in communication with processor 11 and can accept user input in a variety of ways.
  • input device 16 can be a mouse, keyboard, touch screen device, or sensing device, and the like.
  • the computer device 100 described above may be a general purpose computer device or a special purpose computer device.
  • the computer device 100 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet, a wireless terminal device, a communication device, an embedded device, or have the following FIG. A device of similar structure.
  • Embodiments of the invention do not limit the type of computer device 100.
  • any one of the foregoing functional nodes such as the NSF node 02, may be implemented by one physical device, or may be implemented by multiple physical devices, and multiple functions in the foregoing system. Nodes may be implemented by different physical devices or by the same physical device. It can be understood that any one of the above function nodes may be a logical function module in the physical device, or may be a logical function module composed of multiple physical devices.
  • the following describes the logical function module as an execution subject, and those skilled in the art can understand that the logic function module depends on the specific implementation.
  • the hardware resources on the physical device it is on.
  • the foregoing network slice determining system can be applied to a 5G network, a long term evolution (LTE) network, and can also be applied to an LTE evolved communication network, such as LTE-A (long
  • LTE-A long
  • LTE-A long
  • 3rd-generation, 3G third-generation mobile communication
  • WCDMA Wideband Code Division Multiple Access
  • composition of the NSF node 02 and the interface standard between the NSF node 02 and the access network node 01 are not unique, and the implementation is different depending on the implementation scheme.
  • the section is expanded in detail in the following implementation.
  • an embodiment of the present invention provides a method for determining a network slice, where the NSF node has a function of signaling analysis of signaling of different signaling types, as shown in FIG. 4 . Show that the method includes:
  • the terminal sends an initial attach request to the access network node, where the initial attach request carries the identity of the terminal.
  • the NSF node performs signaling analysis on the initial attach request to obtain an identity identifier of the terminal.
  • the NSF node sends the identity identifier to the HSS.
  • the HSS After receiving the identity identifier, the HSS determines, according to the identity identifier, a slice identifier of a network slice to which the terminal belongs.
  • the HSS sends the determined slice identifier of the network slice to the NSF node.
  • the NSF node After receiving the slice identifier of the network slice, the NSF node queries the network slice attribute information corresponding to the slice identifier according to the slice identifier, where the NSF node stores the slice identifier of different network slices and different network slice attribute information.
  • the correspondence between the network slice attributes includes: at least one of a terminal type, a service type, and a location range supported by the network slice corresponding to the network slice attribute information.
  • the NSF node acquires the auxiliary information of the terminal, where the auxiliary information includes at least one of a terminal type of the terminal, a service type requested by the terminal, and location information of the terminal.
  • the NSF node sends the identifier of the core network node to the access network node, so that the access network node accesses the terminal to the core network node.
  • step 101 when the terminal needs to access a network slice, it usually passes The access network establishes an association relationship between the terminal (ie, the terminal) and the network slice, and the access network node in the access network accesses the terminal to a core network node of the network slice.
  • the terminal may send an initial attach request (ie, Initial Attach Reques) to the access network node, where the initial attach request carries the identity of the terminal, for example, the terminal IMSI.
  • Initial Attach Reques an initial attach request
  • the initial attach request carries the identity of the terminal, for example, the terminal IMSI.
  • step 102 the access network node sends the initial attach request to the NSF node.
  • the various interfaces used when the access network node interacts with the NSF node may use various interfaces used when the access network node interacts with the core network node, for example, continue to use the access network node ( For example, an interface used by an eNodeB) and a core network node (for example, an MME) based on an S1AP (S1 Application Protocol) protocol.
  • an interface used by an eNodeB and a core network node
  • S1AP S1 Application Protocol
  • the types of signaling used by the terminals belonging to different types of network slices to send the initial attach request may be different, for example, for the EPC (Evolved Packet Core) type network slice.
  • the terminal may send an initial attach request to the access network node by using a NAS (Network Attached Storage) type signaling, and then the initial attach request is forwarded by the access network node to the core network node, and the future 5G network
  • the terminal may be required to use the non-NAS signaling type to interact with the core network node, which is not limited in this embodiment of the present invention.
  • the interface protocol used between the access network node and the core network may also be different, for example, the S1AP protocol is adopted between the eNodeB and the MME, and in other 5G networks, other protocols may also be used (such as Diameter).
  • the interaction between the access network node and the core network is not limited in this embodiment of the present invention.
  • step 103 the NSF node performs signaling analysis on the received initial attach request, thereby obtaining the identity of the terminal.
  • the signaling of the different types corresponds to different resolution identifiers.
  • the resolution identifier corresponding to the signaling of the S1AP type is 001.
  • the NSF node may determine the parsing identifier of the initial attach request according to the signaling type of the initial attach request. For example, when the initial attach request is NAS type signaling, the corresponding parsing identifier may be determined to be 002, then, according to The resolution identifier 002, the NSF node can use the signaling parsing module corresponding to 002 to perform signaling analysis on the initial attach request, and after parsing, obtain the identity of the terminal.
  • the analytic identifier may be a transport layer port number.
  • the transport layer port number may be an SCTP (Stream Control Transmission Protocol) port number or a TCP (Transmission Control Protocol) port. No. or UDP (User Datagram Protocol) port number.
  • SCTP Stream Control Transmission Protocol
  • TCP Transmission Control Protocol
  • UDP User Datagram Protocol
  • the SCTP port number corresponding to the S1AP type signaling is 36412.
  • the NSF node can determine that the SCTP port number used for forwarding the initial attached signaling is 36412; The transport layer port number, the NSF node can use the corresponding signaling parsing module to perform signaling analysis on the initial attach request, and after parsing, obtain the identity of the terminal.
  • step 104 the NSF node sends the parsed identity identifier to the HSS, so that the HSS determines the slice identifier of the network slice to which the terminal belongs according to the identity identifier.
  • the user subscription information of each terminal is stored in the HSS, and the user subscription information is used to indicate a correspondence between the identity identifier of each terminal and the slice identifier of the network slice that the terminal subscribes to. Therefore, the HSS receives the information. After the identity of the terminal, the user can find the slice identifier of the network slice to which the terminal belongs, that is, determine the network slice to which the terminal belongs.
  • the network slice whose slice identifier is 01 corresponds to the network slice attribute 1.
  • the network slice attribute 1 is used to indicate that the terminal type supported by the network slice whose slice identifier is 01 is a mobile terminal, that is, when When the terminal that requests the access has a subscription relationship with the network slice whose slice ID is 01, and the terminal type of the terminal is a mobile phone, the terminal is allowed to access the network slice whose slice identifier is 01.
  • Network slice attribute information 01 Network slice attribute 1 02 Network slice attribute 2 03 Network slice attribute 1
  • the NSF node may acquire the auxiliary information of the terminal from the access network node, where the auxiliary information includes at least one of a terminal type of the terminal, a service type requested by the terminal, and location information of the terminal.
  • the embodiment of the present invention does not limit the execution sequence between step 108 and steps 102-107.
  • the auxiliary information may be carried in the initial attach request.
  • the access network node is configured to enable the access network node to send the auxiliary information to the NSF node at step 102; or the NSF node can acquire the auxiliary information of the terminal at any time before the step 109 is performed, and the present invention is implemented. This example does not limit this.
  • the NSF node determines, according to the obtained auxiliary information of the terminal, whether the auxiliary information matches the network slice attribute information, that is, the auxiliary
  • the terminal type of the terminal in the help information is a terminal type supported by the network slice attribute information, or the service type requested by the terminal in the auxiliary information is a service type supported by the network slice attribute information, or in the auxiliary information. If the location information of the terminal is located in a location range supported by the network slice attribute information, the auxiliary information may be considered to match the network slice attribute information.
  • the auxiliary information is location information of the terminal, the location information indicates that the terminal is located at the location 1, and the network slice attribute information is the network slice attribute 2, and the network slice attribute 2 indicates the location supported by the network slice whose slice identifier is 02.
  • the range is area 1.
  • the NSF node determines whether the location 1 is located in the area 1. If the location 1 is located in the area 1, the auxiliary information matches the network slice attribute information. At this time, the NSF node indicates the slice identifier.
  • the network slice is determined as the network slice to which the terminal belongs, that is, the network slice whose slice identifier is 02 is determined as the network slice to which the terminal belongs.
  • the NSF node queries the network slice attribute information corresponding to the slice identifier according to the slice identifier sent by the HSS, if not If the network slice attribute information corresponding to the slice identifier is queried, the NSF node may directly determine the network slice indicated by the slice identifier as the network slice to which the terminal belongs.
  • the NSF node may determine whether the terminal is satisfied by using the method described in the foregoing steps 107-109.
  • Network slice attribute information corresponding to each network slice when it is determined that the terminal meets multiple network slices corresponding to
  • the network slice with the highest priority can be determined as the network slice to which the terminal belongs according to the priority of different network slices.
  • the NSF node may send the determined identifier of the slice to the access network node, and subsequently, the access network node may determine, according to the slice identifier, that the terminal needs to access the core specified in the network slice indicated by the slice identifier.
  • the network ingress node, and then the terminal accesses the core network ingress node, to complete the network slice access process.
  • the NSF node may pre-store the correspondence between the slice identifier of the network slice and the identifier of the core network entry node in the network slice.
  • the network slice 1 is composed of five different core network nodes, wherein the core The network node 1 is a core network ingress node in the network slice 1.
  • the terminal accesses the network slice 1, the terminal needs to establish a connection with the core network node 1 to access the network slice 1.
  • the network can be pre-stored in the NSF node. Correspondence between the slice identifier of slice 1 and the identity of core network node 1.
  • the NSF node determines the identifier of the core network node corresponding to the slice identifier obtained in step 109 according to the correspondence between the slice identifiers of the different network slices and the identifiers of the different core network nodes.
  • the identifier of the core network node may be an IP address of the core network node or an MMEGI (MME group ID) of the core network node.
  • the NSF node sends the identifier of the core network node to the access network node, so that the access network node directly connects the terminal to the core network node according to the identifier of the core network node, and then completes Network slice access process.
  • steps involved in the execution of the NSF node in steps 101-111 may be implemented by the NSF node in accordance with the program instructions stored in the memory 13 by the processor 11 in FIG.
  • the NSF node obtains the identity identifier of the terminal by parsing the initial attach request of the terminal; and further, according to the identity identifier, determines the slice identifier of the network slice to which the terminal belongs by interacting with the HSS; thus, the slice identifiers of different network slices are different.
  • Corresponding relationship between the network slice attribute information determining, for the terminal, the network slice that satisfies the network slice attribute information, and determining the network slice as the network slice to which the terminal belongs, In this way, it solves the problem of how to determine the network slice to which the terminal belongs in the 5G network.
  • the interface between the access network node and the NSF node needs to be pre-configured, and the network slice in the NSF node is Correspondence between the slice identifier and the network slice attribute information, and the correspondence between the slice identifier of the network slice and the identifier of any core network node in the network slice.
  • the process of creating the foregoing network slice can be referred to the following steps 201-210.
  • the OSS sends a first configuration request to the NSF node, where the first configuration request carries the slice identifier of the network slice, the network slice attribute information of the network slice, the identifier of the core network node to be accessed in the network slice, and the identifier The type of signaling supported by the network slice.
  • the NSF node If the NSF node does not support signaling resolution on the signaling of the signaling type, load a signaling parsing module for parsing the signaling type signaling.
  • the NSF node establishes a correspondence between a slice identifier of the network slice and network slice attribute information of the network slice, and a correspondence between the slice identifier of the network slice and the identifier of the core network node.
  • the NSF node sends a first configuration completion response to the OSS, where the first configuration completion response is used to indicate to the OSS that the initial configuration of the network slice by the NSF node has been completed.
  • the access network node sets an interface between the access network node and the NSF node according to the second configuration request.
  • the access network node sends a second configuration completion response to the OSS, where the second configuration is complete.
  • the response is used to indicate to the OSS that the NSF node's initial configuration of the network slice has been completed.
  • a new network slice can be created by using a network function virtualization (NFV) technology in a 5G network to obtain a slice identifier of the network slice.
  • NFV network function virtualization
  • the OSS may also obtain network slice attribute information of the network slice, an identifier of the core network entry node to be accessed in the network slice, and the network.
  • the signaling type of the slice is supported.
  • the OSS sends a first configuration request to the NSF node, where the first configuration request is used to instruct the NSF node to perform initial configuration on the newly established network slice, so as to subsequently determine the terminal to which the terminal belongs.
  • Network slicing is
  • the first configuration request carries a slice identifier of the network slice, network slice attribute information of the network slice, an identifier of a core network ingress node to be accessed in the network slice, and a signaling type supported by the network slice.
  • the initial configuration includes: configuring a function of the NSF node to perform signaling analysis on the signaling type supported by the network slice, and establishing a correspondence between the slice identifier of the network slice and the network slice attribute information of the network slice, and Establishing a correspondence between the slice identifier of the network slice and the identifier of the core network entry node.
  • the NSF node may first find whether the signaling parsing module corresponding to the signaling type supported by the network slice has been created. If the corresponding signaling parsing module is not found, the current NSF node does not support the pair. The signaling of the signaling type is used for parsing. At this time, the NSF node can obtain data or components required for parsing the signaling parsing module of the signaling type signaling from the OSS, and then load and parse according to the data or component loading. Signaling parsing module of the signaling type signaling.
  • the NSF node establishes, between the slice identifier of the network slice and the network slice attribute information of the network slice, in the first configuration request, between the slice identifier of the network slice and the network slice attribute information of the network slice. Corresponding relationship, so that the subsequent NSF node determines whether the terminal belongs to the network slice indicated by the slice identifier of the network slice by determining whether the terminal satisfies the network slice attribute information.
  • step 205 the NSF node sends a first configuration completion response to the OSS, and indicates to the OSS that the initial configuration of the network slice by the NSF node has been completed.
  • step 206 the OSS sends a second configuration request to the access network node, where the second configuration request carries the identifier of the NSF node.
  • the identifier of the NSF node may be an IP address of the NSF node.
  • step 207 the access network node sets an interface between the access network node and the NSF node according to the NSF node.
  • the foregoing second configuration request may further carry a correspondence between a signaling type supported by the newly created network slice and a transport layer port number, so that the access network node receives the terminal.
  • the transport layer port number of the initial attach request may be determined according to the signaling type of the initial attach request, and then the access network node may directly send the transport layer port number and the initial attach request to the NSF.
  • the node and the NSF node can directly perform signaling analysis on the initial attach request by using a signaling parsing module corresponding to the transport layer port number to obtain an identity of the terminal.
  • the access network node sends a second configuration completion response to the OSS, indicating to the OSS that the access network node has completed initial configuration of the network slice.
  • the OSS may confirm to the user that the network has been created. slice.
  • steps involved in the execution of the NSF node in steps 201-208 may be implemented by the NSF node in accordance with the program instructions stored in the memory 13 by the processor 11 in FIG.
  • the access network node may be configured to perform signaling analysis on signaling of different signaling types.
  • the foregoing steps 101-103 may be replaced by the following steps 301-304. As shown in FIG. 6, steps 301-304 specifically include:
  • the terminal sends an initial attach request to the access network node, where the initial attach request carries the identity identifier of the terminal.
  • the access network node performs signaling analysis on the initial attach request to obtain an identity identifier of the terminal.
  • the access network node sends the foregoing identity identifier to the NSF node through a unified interface.
  • the NSF node receives an identity identifier sent by the access network node.
  • the types of signaling used by terminals belonging to different types of network slices to transmit initial attach requests are different.
  • the access network node may perform signaling analysis on the initial attach request, thereby obtaining an identity of the terminal carried in the initial attach request, such as an IMSI of the terminal.
  • the access network node may also set a signaling parsing module for signaling of different signaling types in advance, and then the access network node may be configured according to For the signaling type of the initial attach request, the corresponding signaling parsing module is selected to perform signaling analysis, and the identity of the terminal is obtained.
  • the method for selecting the corresponding signaling parsing module for signaling analysis refer to step 103 in the foregoing embodiment. The related description is not repeated here.
  • the internal structure of the NSF node can be greatly simplified.
  • the interface used when the access network node interacts with the NSF node does not need to use the interaction between the access network node and the core network node.
  • the access network node does not send the initial attach request of the terminal to the NSF node intact, but adopts a unified interface.
  • the protocol format is used to send and receive messages, so that the interface setting between the access network node and the NSF node is simpler and easier.
  • step 303 the access network node sends the identity identifier to the NSF node through the unified interface.
  • step 304 the NSF node receives the identity identifier sent by the access network node.
  • the network slice to which the terminal belongs may be determined by using the method described in the foregoing steps 104-111, and details are not described herein again.
  • steps involved in the execution of the NSF node in steps 301-304 may be implemented by the NSF node in accordance with the program instructions stored in the memory 13 by the processor 11 in FIG.
  • the access network node obtains the identity identifier of the terminal by parsing the initial attach request of the terminal, and sends the identity of the terminal to the NSF node through the unified interface, so that the NSF node determines the network slice to which the terminal belongs by interacting with the HSS according to the identity identifier.
  • a slice identifier combining the correspondence between the slice identifiers of different network slices and different network slice attribute information, the network slice that satisfies the network slice attribute information may be determined for the terminal, and the network slice is determined as the network slice to which the terminal belongs. In this way, the problem of how to determine the network slice to which the terminal belongs is determined in the 5G network.
  • the NSF node includes:
  • the determining unit 23 is configured to determine, according to the slice identifier, a network slice to which the terminal belongs.
  • each network slice attribute information includes: a terminal type supported by the network slice corresponding to the network slice attribute information, At least one of a business type and a range of locations;
  • the acquiring unit 21 is further configured to acquire auxiliary information of the terminal, where the auxiliary information includes at least one of a terminal type of the terminal, a service type requested by the terminal, and location information of the terminal;
  • the sending unit 22 is further configured to send the identifier of the core network ingress node to an access network node, where the identifier of the core network ingress node is used to indicate that the access network node accesses the terminal and the The core network entry node corresponding to the identifier of the core network ingress node.
  • the acquiring unit 21 is specifically configured to receive, by using a unified interface, an identity of the terminal that is sent by the access network node.
  • the parsing unit 24 is configured to perform signaling analysis on the initial attach request to obtain an identity of the terminal.
  • the acquiring unit 21 is further configured to receive, by the access network node, an analysis identifier corresponding to the signaling type of the initial attach request.
  • the disclosed system The apparatus and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Abstract

本发明的实施例提供一种网络切片的确定方法、装置及系统，涉及通信领域，可在5G网络中为终端确定其所属的网络切片。该方法包括：NSF节点获取终端的身份标识；该NSF节点将该身份标识发送至HSS；进而，该NSF节点接收该HSS发送的该网络切片的切片标识，该切片标识为HSS根据上述身份标识所确定的；最后，该NSF节点根据该切片标识，确定该终端所属的网络切片。

Description

一种网络切片的确定方法、装置及系统 技术领域
本发明涉及通信领域，尤其涉及一种网络切片的确定方法、装置及系统。
背景技术
为了能够同时为不同的应用场景(例如车联网应用场景、视频应用场景等)提供通信服务，5G(5-Generation，第五代移动通信技术)网络需要将服务于不同应用场景的网络进行隔离，因此，5G网络中网络切片的概念被提出，其中，网络切片是为特定应用场景或业务模型定制的一系列核心网功能和接入网功能的集合，也就是说，一个网络切片可以由核心网切片和接入网切片组成。由于3GPP已经指出：在当前阶段，网络切片主要针对核心网，因此，接入网共享而核心网切片之间逻辑隔离将会是5G网络中的一种常见形态。
在DECOR(Dedicated Core，专用核心网)技术中，接入网节点可以将终端的接入请求转发至默认的核心网节点，由于不同的专用核心网的信息在各个核心网节点中是共享的，因此，该默认的核心网节点可以根据不同的专用核心网的信息，为终端确定其所属的专用核心网。
但是，在5G网络中，当接入网节点在收到终端的接入请求后，由于不同网络切片之间是相互隔离，互不感知的，因此，接入网节点无法直接通过某个网络切片内的核心网节点，为终端确定其所属的网络切片，进而无法将终端接入其所属的网络切片。
发明内容
本发明的实施例提供一种网络切片的确定方法、装置及系统，可在5G网络中为终端确定其所属的网络切片。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，本发明的实施例提供一种网络切片的确定方法，包 括：NSF(Network Selection Function，网络选择功能)节点获取终端的身份标识；该NSF节点将该身份标识发送至HSS(Home Subscriber Server，归属签约用户服务器)；进而，该NSF节点接收该HSS发送的该网络切片的切片标识，该切片标识为HSS根据上述身份标识所确定；最后，该NSF节点根据该切片标识，确定该终端所属的网络切片。
这样一来，NSF节点可以将该终端所属的网络切片的切片标识反馈给接入网节点，以使得接入网节点将终端接入该切片标识所指示的网络切片，即在异构网络切片系统中实现终端接入其所属的网络切片的过程。
在一种可能的设计中，该NSF节点内存储有网络切片的切片标识与网络切片属性信息之间的对应关系，其中，每个网络切片属性信息包括：与该网络切片属性信息对应的网络切片所支持的终端类型、业务类型和位置范围中的至少一种；
此时，该NSF节点根据该切片标识确定该终端所属的网络切片，包括：该NSF节点根据预先存储的网络切片的切片标识与网络切片属性信息之间的对应关系，查询与该切片标识对应的网络切片属性信息；该NSF节点获取该终端的辅助信息，该辅助信息包括该终端的终端类型、该终端请求的业务类型或该终端的位置信息中的至少一种；若该辅助信息满足该网络切片属性信息，则该NSF节点将该切片标识所指示的网络切片确定为该终端所属的网络切片。
这样，结合不同网络切片的切片标识与不同网络切片属性信息之间的对应关系，可以为终端确定满足网络切片属性信息的网络切片，并将该网络切片确定为终端所属的网络切片，从而避免不符合网络切片属性信息的终端接入该网络切片而降低终端接入网络切片的可靠性。
在一种可能的设计中，该NSF节点内预先存储有网络切片的切片标识与该网络切片内核心网入口节点的标识之间的对应关系；
此时，在该NSF节点根据该切片标识，确定该终端所属的网络 切片之后，还包括：该NSF节点根据预先存储的网络切片的切片标识与该网络切片内核心网入口节点的标识之间的对应关系，确定与该切片标识对应的核心网入口节点的标识；该NSF节点将该核心网入口节点的标识发送至接入网节点，该核心网入口节点的标识用于指示接入网节点将终端接入与该核心网入口节点的标识对应的核心网入口节点。
在一种可能的设计中，NSF节点获取终端的身份标识，包括：该NSF节点通过统一接口接收接入网节点发送的该终端的身份标识。
也就是说，接入网节点无需沿用接入网节点与核心网节点之间进行交互时使用的各种接口，将终端的初始附着请求原封不动地发送到NSF节点，而是采用统一接口下规定的协议格式进行消息的发送和接收，这样，接入网节点与NSF节点之间的接口设置更加简单易行。
在一种可能的设计中，NSF节点获取终端的身份标识，包括：该NSF节点接收接入网节点发送的该终端的初始附着请求，该初始附着请求内携带有该终端的身份标识；该NSF节点对该初始附着请求进行信令解析，得到该终端的身份标识。
也就是说，NSF节点具备对异构网络切片系统内，不同信令类型的信令进行信令解析的功能，从而，针对接入网节点转发的不同信令类型的初始附着请求，NSF节点可以通过信令解析获取终端的身份标识，以便于NSF节点根据终端的身份标识从HSS获取该终端所属的网络切片的切片标识。
在一种可能的设计中，该NSF节点内预先存储有信令类型与该信令类型的解析标识之间的对应关系；此时，该NSF节点对该初始附着请求进行信令解析，得到该终端的身份标识，包括：该NSF节点根据预先存储的该信令类型与该信令类型的解析标识之间的对应关系，确定与该初始附着请求的信令类型对应的解析标识；该NSF节点根据该解析标识，对该初始附着请求进行信令解析，得到该终 端的身份标识。
在一种可能的设计中，在该NSF节点对该初始附着请求进行信令解析，得到该终端的身份标识之前，还包括：该NSF节点接收该接入网节点发送的与该初始附着请求的信令类型对应的解析标识；此时，该NSF节点对该初始附着请求进行信令解析，得到该终端的身份标识，包括：该NSF节点根据该解析标识，对该初始附着请求进行信令解析，得到该终端的身份标识。
其中，上述解析标识为该初始附着请求的传输层端口号。
第二方面，本发明的实施例提供一种NSF节点，包括：获取单元，用于获取终端的身份标识；以及接收HSS发送的该网络切片的切片标识，该切片标识为HSS根据上述身份标识所确定；发送单元，用于将该身份标识发送至HSS；确定单元，用于根据该切片标识，确定该终端所属的网络切片。
在一种可能的设计中，该NSF节点内预先存储有网络切片的切片标识与网络切片属性信息之间的对应关系，每个网络切片属性信息包括：与该网络切片属性信息对应的网络切片所支持的终端类型、业务类型和位置范围中的至少一种。
此时，该获取单元，还用于获取该终端的辅助信息，该辅助信息包括该终端的终端类型、该终端请求的业务类型和该终端的位置信息中的至少一种；该确定单元，具体用于根据预先存储的该网络切片的切片标识与网络切片属性信息之间的对应关系，查询与该切片标识对应的网络切片属性信息；若该辅助信息满足该网络切片属性信息，则将该切片标识所指示的网络切片确定为该终端所属的网络切片。
在一种可能的设计中，该NSF节点内预先存储有网络切片的切片标识与该网络切片内核心网入口节点的标识之间的对应关系。
此时，该确定单元，还用于根据预先存储的该网络切片的切片标识与该网络切片内核心网入口节点的标识之间的对应关系，确定与该切片标识对应的核心网入口节点的标识；该发送单元，还用于 将该核心网入口节点的标识发送至接入网节点，该核心网入口节点的标识用于指示接入网节点将终端接入与该核心网入口节点的标识对应的核心网入口节点。
在一种可能的设计中，该获取单元，具体用于通过统一接口接收接入网节点发送的该终端的身份标识。
在一种可能的设计中，该NSF节点还包括解析单元，其中，该获取单元，还用于接收接入网节点发送的该终端的初始附着请求，该初始附着请求内携带有该终端的身份标识；该解析单元，用于对该初始附着请求进行信令解析，得到该终端的身份标识。
在一种可能的设计中，该NSF节点内预先存储有信令类型与该信令类型的解析标识之间的对应关系；其中，该解析单元，具体用于根据预先存储的该信令类型与该信令类型的解析标识之间的对应关系，确定与该初始附着请求的信令类型对应的解析标识；根据该解析标识，对该初始附着请求进行信令解析，得到该终端的身份标识。
在一种可能的设计中，该获取单元，还用于接收该接入网节点发送的与该初始附着请求的信令类型对应的解析标识；该解析单元，具体用于根据该解析标识，对该初始附着请求进行信令解析，得到该终端的身份标识。
第三方面，本发明的实施例提供一种NSF节点，包括：处理器、存储器、总线和通信接口；该存储器用于存储计算机执行指令，该处理器与该存储器通过该总线连接，当该NSF节点运行时，该处理器执行该存储器存储的该计算机执行指令，以使该NSF节点执行如第一方面中任意一项的网络切换方法。
第四方面，本发明的实施例提供一种网络切片的确定系统，该系统包括如第二方面中任一项所述的网络选择功能NSF节点，以及与该NSF节点均相连的HSS和接入网节点。
第五方面，本发明实施例提供了一种计算机存储介质，用于储存为上述NSF节点所用的计算机软件指令，其包含用于执行上述方 面为NSF节点所设计的程序。
本发明中，上述NSF节点的名字对设备或功能模块本身不构成限定，在实际实现中，这些设备或功能模块可以以其他名称出现。只要各个设备或功能模块的功能和本发明类似，属于本发明权利要求及其等同技术的范围之内。
另外，第二方面至第五方面中任一种设计方式所带来的技术效果可参见第一方面中不同设计方式所带来的技术效果，此处不再赘述。
本发明的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍。
图1为本发明实施例提供的一种网络切片的确定系统的架构示意图；
图2为本发明实施例提供的一种网络切片的确定方法的交互示意图一；
图3为本发明实施例提供的一种计算机设备的结构示意图；
图4为本发明实施例提供的一种网络切片的确定方法的交互示意图二；
图5为本发明实施例提供的一种网络切片的确定方法的交互示意图三；
图6为本发明实施例提供的一种网络切片的确定方法的交互示意图四；
图7为本发明实施例提供的一种NSF的结构示意图一；
图8为本发明实施例提供的一种NSF的结构示意图二。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明 一部分实施例，而不是全部的实施例。
另外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本发明的实施例提供一种网络切片的确定方法，可应用于如图1所示的网络切片的确定系统。该系统包括接入网(RAN，Radio Access Network)节点01，例如eNodeB基站，NSF节点02，HSS 03，以及核心网(Core Net)节点04，例如MME(Mobility Management Entity，移动性管理实体)。
其中，每一个网络切片可以由一个或多个核心网节点04组成，用于实现特定应用场景或业务模型的业务功能，例如，网络切片1用于提供高清视频服务，网络切片2用于为签约车联网的各个终端提供服务，而各个接入网节点01可以直接与属于不同网络切片的终端进行交互，即终端可以通过共享接入网的形式接入不同的网络切片。
需要指出的是，为实现本发明实施例提供的网络切片的确定方法，在上述系统中引入了新的网元，即NSF节点02，其中，NSF节点02服务于接入网节点01，NSF节点02分别与各个接入网节点01和HSS 03相连，用于为终端确定其所属的网络切片，并将确定的该网络切片反馈至相应的接入网节点01，以便于接入网节点01建立终端与该网络切片之间的关联关系。
可以理解的是，上述NSF节点02可以作为独立的网元执行以本发明实施例中提供的网络切片的确定方法，又或者，NSF节点02还 可以以功能节点的形式集成在现有网络架构中的任意网元设备中，例如，可以将NSF节点02集成在HSS 03内，以使得HSS 03实现以下NSF节点02的各项操作和功能，本发明实施例对此不做限定。
另外，本发明实施例中所涉及的终端，是指准备接入其所属的网络切片的任意设备，例如，手机、车载设备或者笔记本电脑等，本发明实施例对此不做限定。
具体的，如图2所示，NSF节点02的可以接收接入网节点01发送的初始附着请求，获取该终端的身份标识，例如，该身份标识为该终端的国际移动用户识别码(International Mobile Subscriber Identification Number，IMSI)；进而，NSF节点02将该身份标识发送至HSS 03，以使得HSS 03根据该身份标识确定终端所属的网络切片，即该终端签约的网络切片；HSS 03将确定的网络切片的切片标识发送至NSF节点02，这样，NSF节点02根据该切片标识，便可以确定出终端所属的网络切片；那么，后续NSF节点02可以将确定出的终端所属的网络切片的切片标识反馈至接入网节点01，接入网节点01就可以将该终端接入上述确定的网络切片的切片标识所指示的网络切片。
这里，由于属于不同网络切片的终端使用的信令格式可能不同，因此，属于不同网络切片的终端发送初始附着请求时使用的信令类型不同，此时，需要接入网节点01或NSF节点02具备对不同信令类型的信令进行信令解析的功能，例如，接入网节点01将该初始附着请求转发给NSF节点02之后，NSF节点02根据该初始附着请求的信令类型对该初始附着请求进行解析，从而得到终端的身份标识；或者，接入网节点01接收到终端发送的初始附着请求后，直接根据该初始附着请求的信令类型对该初始附着请求进行解析，得到终端的身份标识，并将该身份标识发送至NSF节点02，以便于NSF节点02将该身份标识发送至HSS 03，以使得HSS 03确定出终端所属的网络切片。
后续实施例中将对上述两种网络切片的确定方法进行详细阐 述，故此处不再赘述。
如图3所示，图1中的NSF节点02可以以图3中的计算机设备(或系统)的方式来实现。
图3所示为本发明实施例提供的计算机设备示意图。计算机设备100包括至少一个处理器11，通信总线12，存储器13以及至少一个通信接口14。
处理器11可以是一个通用中央处理器(CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本发明方案程序执行的集成电路。
通信总线12可包括一通路，在上述组件之间传送信息。所述通信接口14，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(RAN)，无线局域网(Wireless Local Area Networks，WLAN)等。
存储器13可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信总线与处理器相连接。存储器也可以和处理器集成在一起。
其中，所述存储器13用于存储执行本发明方案的应用程序代码，并由处理器11来控制执行。所述处理器11用于执行所述存储器13中存储的应用程序代码。
示例性的，在本发明的实施例提供的网络切片的确定方法中，NSF节点02内的处理器11可以通过通信接口14获取终端的身份标 识；进而，通过通信接口14将上述身份标识发送至HSS 03，由HSS 03根据该身份标识确定终端所属的网络切片的标识，并将该网络切片的切片标识发送至NSF节点02；NSF节点02通过通信接口14接收HSS 03发送的该网络切片的切片标识，并由处理器11根据该切片标识，确定该终端所属的网络切片。
其中，在NSF节点02内的存储器13中，可存储有网络切片的切片标识与网络切片属性信息之间的对应关系，该网络切片属性信息包括：与该网络切片属性信息对应的网络切片所支持的终端类型、业务类型和位置范围中的至少一种，这样，处理器11根据该切片标识，确定该终端所属的网络切片时，可以进一步判断该终端是否为该网络切片所支持的终端，从而避免不符合网络切片属性信息的终端接入该网络切片。
另外，在NSF节点02内的存储器13中，还可以存储每一个网络切片的切片标识与该网络切片内核心网入口节点的标识之间的对应关系，这样，在处理器11确定该终端所属的网络切片之后，可以根据确定的网络切片的切片标识，进一步确定与该网络切片内核心网入口节点的标识，以便于接入网节点01将该终端接入该网络切片内相应的核心网入口节点。
在具体实现中，作为一种实施例，处理器11可以包括一个或多个CPU，例如图3中的CPU0和CPU1。
在具体实现中，作为一种实施例，计算机设备100可以包括多个处理器，例如图3中的处理器11和处理器18。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，计算机设备100还可以包括输出设备15和输入设备16。输出设备15和处理器11通信，可以以多种方式来显示信息。例如，输出设备15可以是液晶显示器(liquid crystal display，LCD),发光二级管(light emitting  diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备16和处理器11通信，可以以多种方式接受用户的输入。例如，输入设备16可以是鼠标、键盘、触摸屏设备或传感设备等。
上述的计算机设备100可以是一个通用计算机设备或者是一个专用计算机设备。在具体实现中，计算机设备100可以是台式机、便携式电脑、网络服务器、掌上电脑(Personal Digital Assistant，PDA)、移动手机、平板电脑、无线终端设备、通信设备、嵌入式设备或有图3中类似结构的设备。本发明实施例不限定计算机设备100的类型。
需要说明的是，在本发明实例中，上述系统中的任意一种功能节点，例如NSF节点02，可能由一个实体设备实现，也可能由多个实体设备共同实现，上述系统中的多个功能节点可能分别由不同的实体设备实现，也可能都由同一个实体设备实现。可以理解的是，上述系统中的任意一种功能节点都可能是实体设备内的一个逻辑功能模块，也可能是由多个实体设备组成的一个逻辑功能模块。
进一步地，为了更清楚地介绍本发明提供的一种网络切片的确定方法，下文中均以逻辑功能模块作为执行主体进行说明，本领域技术人员可以理解，逻辑功能模块在具体实现时需依赖于其所在的实体设备上的硬件资源。
另外，在本发明实施例中，上述网络切片的确定系统可以应用于5G网络，长期演进(long term evolution，LTE)网络中，也可以应用于LTE的演进通信网络中，如LTE-A(long term evolution advanced，长期演进技术升级版)系统中，还可以应用于WCDMA(Wideband Code Division Multiple Access，宽带码分多址)等第三代移动通信(3rd-Generation，3G)网络中等，本发明不作限制。
具体的，NSF节点02的组成以及NSF节点02与接入网节点01之间的接口标准并不唯一，其随着实现方案的不同而不同，具体细 节在以下实现例中详细展开。
基于图1所示的网络切片的确定系统，本发明的实施例提供一种网络切片的确定方法，其中，NSF节点具备对不同信令类型的信令进行信令解析的功能，如图4所示，该方法包括：
101、终端向接入网节点发送初始附着请求，该初始附着请求内携带有终端的身份标识。
102、接入网节点将该初始附着请求发送至NSF节点。
103、NSF节点对该初始附着请求进行信令解析，得到终端的身份标识。
104、NSF节点将该身份标识发送至HSS。
105、HSS接收该身份标识后，根据该身份标识确定终端所属的网络切片的切片标识。
106、HSS将确定的该网络切片的切片标识发送至NSF节点。
107、NSF节点接收该网络切片的切片标识后，根据该切片标识，查询与该切片标识对应的网络切片属性信息，其中，NSF节点内存储有不同网络切片的切片标识与不同网络切片属性信息之间的对应关系，每个网络切片属性信息包括：与该网络切片属性信息对应的网络切片所支持的终端类型、业务类型和位置范围中的至少一种。
108、若查询到与该切片标识对应的网络切片属性信息，则NSF节点获取终端的辅助信息，该辅助信息包括终端的终端类型、终端请求的业务类型和终端的位置信息中的至少一种。
109、若该辅助信息与上述网络切片属性信息相匹配，则NSF节点将该切片标识所指示的网络切片确定为终端所属的网络切片。
110、NSF节点根据该切片标识，确定终端待接入的核心网节点的标识，其中，NSF节点内预先存储有网络切片的切片标识与该网络切片内任一核心网节点的标识之间的对应关系。
111、NSF节点将该核心网节点的标识发送至接入网节点，以使得接入网节点将终端接入该核心网节点。
在步骤101中，当终端需要接入一个网络切片时，通常是通过 接入网建立该终端(即终端)与网络切片之间的关联关系，进而接入网内的接入网节点将终端接入该网络切片的某个核心网节点。
此时，终端可以向接入网节点发送初始附着请求(即Initial Attach Reques)，该初始附着请求内携带有终端的身份标识，例如，该终端IMSI。
在步骤102中，接入网节点将该初始附着请求发送至NSF节点。
其中，接入网节点与NSF节点之间进行交互时使用的各种接口，可以沿用接入网节点与核心网节点之间进行交互时使用的各种接口，例如，继续使用接入网节点(例如，eNodeB)与核心网节点(例如，MME)之间基于S1AP(S1 Application Protocol，S1应用协议)协议使用的接口。
需要说明的是，属于不同类型网络切片的终端发送初始附着请求时使用的信令类型可能是不同的，例如，示例性的，对于签约EPC(Evolved Packet Core，核心分组网演进)类型网络切片的终端，可使用NAS(Network Attached Storage，网络附属存储存)类型的信令向接入网节点发送初始附着请求，进而由接入网节点将该初始附着请求转发至核心网节点，而未来5G网络中，可能要求终端使用非NAS信令类型与核心网节点交互，本发明实施例对此不做限定。
相应的，接入网节点和核心网之间的所使用的接口协议也可能是不同的，例如eNodeB和MME之间的采用S1AP协议，而未来5G网络中，也可能存在使用其它协议(如Diameter)进行接入网节点和核心网之间的交互，本发明实施例对此不做限定。
在步骤103中，NSF节点对接收到的该初始附着请求进行信令解析，从而得到终端的身份标识。
其中，不同的类型的信令对应不同的解析标识，例如，与S1AP类型的信令对应的解析标识为001。
而NSF节点内分别设置有针对不同解析标识的信令解析模块，即不同的解析标识用于指示不同的信令解析模块，例如，NSF节点内设置有信令解析模块1-信令解析模块10，那么，该NSF节点可以 支持对10种不同信令类型的初始附着请求进行信令解析，也就是说，信令解析模块1-信令解析模块10分别与10个不同的解析标识对应。
因此，NSF节点可以根据该初始附着请求的信令类型，确定该初始附着请求的解析标识，例如，当初始附着请求为NAS类型的信令时，可以确定对应的解析标识为002，那么，根据该解析标识002，NSF节点便可以使用002对应的信令解析模块，对上述初始附着请求进行信令解析，经过解析后得到该终端的身份标识。
示例性的，该解析标识可以为传输层端口号，具体的，该传输层端口号可以为SCTP(Stream Control Transmission Protocol，流控制传输协议)端口号、TCP(Transmission Control Protocol，传输控制协议)端口号或者UDP(User Datagram Protocol，用户数据报协议)端口号。例如，与S1AP类型的信令对应的SCTP端口号为36412。
这样，当接入网节点和NSF之间通过S1AP类型的信令转发该初始附着信令时，NSF节点可以确定该转发该初始附着信令时所使用的SCTP端口号为36412；那么，根据该传输层端口号，NSF节点便可以使用对应的信令解析模块对上述初始附着请求进行信令解析，经过解析后得到该终端的身份标识。
又或者，由于建立上述终端的网络切片时，便可以确定与该网络切片对应的信令类型以及与该信令类型对应的传输层端口号，因此，在建立上述终端的网络切片时，便可以将该信令类型与传输层端口号之间的对应关系设置在接入网节点内，即将信令类型与解析标识之间的对应关系设置在接入网节点内，这样，接入网节点接收到该初始附着请求后，便可以根据该初始附着请求的信令类型确定该初始附着请求的传输层端口号，那么，接入网节点可以直接把上述传输层端口号与该初始附着请求发送至NSF节点，NSF节点无需确定该初始附着请求的传输层端口号，便可以直接使用与传输层端口号对应的信令解析模块对上述初始附着请求进行信令解析，得到 该终端的身份标识。
进而，在步骤104中，NSF节点将解析得到的该身份标识发送至HSS，以使得HSS根据该身份标识确定终端所属的网络切片的切片标识。
具体的，由于HSS内存储有各个终端的用户签约信息，该用户签约信息用于指示每个终端的身份标识与该终端签约的网络切片的切片标识之间的对应关系，因此，HSS接收到该终端的身份标识后，根据该用户签约信息便可以查找出该终端所属的网络切片的切片标识，即确定该终端所属的网络切片。
在步骤105中，HSS将确定的该网络切片的切片标识发送至NSF节点。
其中，该网络切片的切片标识可以为该网络切片的ID(identification，身份标识号)。
在步骤106中，NSF节点接收HSS发送的该网络切片的切片标识。
需要说明的是，由于一个终端可能与多个网络切片都存在签约关系，即一个终端可能属于多个网络切片，因此，HSS发送的网络切片的切片标识可以为一个或多个，本发明实施例对此不做限定。
另外，在建立上述终端的网络切片时，便可以在NSF节点内存储不同网络切片的切片标识与不同网络切片属性信息之间的对应关系，每个网络切片属性信息中包括该网络切片属性信息对应的网络切片支持的终端类型、业务类型和位置范围中的至少一种，例如，网络切片1所对应的网络切片属性信息为一个或多个终端类型的列表，即表示网络切片1所支持的所有终端类型。
如表1所示，切片标识为01的网络切片与网络切片属性1对应，例如，网络切片属性1用于指示切片标识为01的网络切片所支持的终端类型为手机终端，也就是说，当请求接入的终端与切片标识为01的网络切片之间具有签约关系，且该终端的终端类型为手机时，才允许将该终端接入切片标识为01的网络切片。
表1
切片标识 网络切片属性信息
01 网络切片属性1
02 网络切片属性2
03 网络切片属性1
此时，在步骤107中，NSF节点根据步骤106中HSS发送的上述切片标识，查询与该切片标识对应的网络切片属性信息，例如，HSS发送的上述切片标识为02，那么，根据表1所示，与该切片标识02对应的网络切片属性信息为网络切片属性2，其中，网络切片属性2用于指示切片标识为02的网络切片所支持的位置范围为区域1，也就是说，只有当终端位于区域1时，满足该网络切片属性2。
进而，在步骤108中，NSF节点可以从接入网节点获取该终端的辅助信息，其中，该辅助信息包括终端的终端类型、终端请求的业务类型和终端的位置信息中的至少一种。
由于终端在签约某个网络切片时便可获知该网络切片的网络切片属性信息，因此，终端上报给接入网节点的辅助信息一般都是与该网络切片的网络切片属性信息内的具体内容是对应的，即当网络切片属性1用于约束终端的终端类型时，终端上报给接入网节点的辅助信息也为该终端的终端类型；当网络切片属性2用于约束终端的位置范围时，终端上报给接入网节点的辅助信息也为该终端的位置信息。
需要说明的是，本发明实施例并不限定步骤108与步骤102-107之间的执行顺序，例如，在步骤101终端发送初始附着请求时，便可以将上述辅助信息携带在初始附着请求中发送至接入网节点，以使得接入网节点在步骤102时便可将该辅助信息发送至NSF节点；又或者，NSF节点可以在执行步骤109之前的任意时刻获取终端的辅助信息，本发明实施例对此不做限定。
进一步地，在步骤109中，NSF节点根据获取的该终端的辅助信息，判断该辅助信息是否与上述网络切片属性信息相匹配，即辅 助信息中上述终端的终端类型为上述网络切片属性信息中所支持的终端类型，或者，辅助信息中上述终端请求的业务类型为上述网络切片属性信息中所支持的业务类型，或者，辅助信息中上述终端的位置信息位于上述网络切片属性信息中所支持的位置范围内，则可认为该辅助信息与上述网络切片属性信息匹配。
例如，该辅助信息为终端的位置信息，该位置信息指示该终端位于位置1，同时，该网络切片属性信息为网络切片属性2，网络切片属性2指示切片标识为02的网络切片所支持的位置范围为区域1，此时，NSF节点判断位置1是否位于区域1，若位置1位于区域1，则上述辅助信息与上述网络切片属性信息相匹配，此时，NSF节点将该切片标识所指示的网络切片确定为终端所属的网络切片，即将切片标识为02的网络切片确定为该终端所属的网络切片。
这样，结合不同网络切片的切片标识与不同网络切片属性信息之间的对应关系，可以为终端确定满足网络切片属性信息的网络切片，并将该网络切片确定为终端所属的网络切片，也就是说，在为终端确定其所属的网络切片时，可在HSS提供的网络切片的切片标识的基础上，进一步根据诸如终端类型、终端请求的业务类型和终端的位置信息等辅助信息进行网络切片的选择，从而避免不符合网络切片属性信息的终端接入该网络切片而降低终端接入网络切片的可靠性，使网络切片的选择依据更加多样化。
当然，不一定所有的网络切片都设置有对应的网络切片属性信息，因此，在执行步骤107，即NSF节点根据HSS发送的切片标识，查询与该切片标识对应的网络切片属性信息之后，如果没有查询到与该切片标识对应的网络切片属性信息，则NSF节点可以直接将该切片标识所指示的网络切片确定为该终端所属的网络切片。
另外，如果步骤105中HSS发送的网络切片的切片标识为多个，即终端签约了多个网络切片，那么，NSF节点可以沿用上述步骤107-109中所述的方法，分别确定该终端是否满足每一个网络切片对应的网络切片属性信息，当确定该终端满足多个网络切片对应的 网络切片属性信息时，可以根据不同网络切片的优先级，将优先级高的网络切片确定为终端所属的网络切片。
此时，NSF节点可以将确定的该切片标识发送至接入网节点，后续，接入网节点便可以根据该切片标识，确定该终端需要接入该切片标识所指示的网络切片中指定的核心网入口节点，进而将该终端接入该核心网入口节点，即可完成网络切片的接入过程。
又或者，NSF节点内可以预先存储有网络切片的切片标识与该网络切片内核心网入口节点的标识之间的对应关系，例如，网络切片1由5个不同的核心网节点组成，其中，核心网节点1为该网络切片1内的核心网入口节点，即终端接入该网络切片1时，需要与核心网节点1建立连接才能接入该网络切片1，那么，NSF节点内可以预先存储网络切片1的切片标识与核心网节点1的标识之间的对应关系。
这样，在步骤110中，NSF节点根据上述不同网络切片的切片标识与不同核心网节点的标识之间的对应关系，确定与步骤109中得到的切片标识对应的核心网节点的标识。
其中，核心网节点的标识具体可以为核心网节点的IP地址或核心网节点的MMEGI(MME group ID，MME群组标识)。
进而，在步骤111中，NSF节点将该核心网节点的标识发送至接入网节点，以使得接入网节点根据该核心网节点的标识，直接将终端接入该核心网节点，即可完成网络切片的接入过程。
其中，步骤101-111中涉及NSF节点执行的步骤，可以由NSF节点根据上述图3中的处理器11执行存储器13中存储的程序指令来实现。
至此，NSF节点通过解析终端的初始附着请求，获取该终端的身份标识；进而根据该身份标识，通过与HSS交互确定终端所属的网络切片的切片标识；这样，结合不同网络切片的切片标识与不同网络切片属性信息之间的对应关系，为终端确定满足网络切片属性信息的网络切片，并将该网络切片确定为终端所属的网络切片，这 样，便解决了如何在5G网络中为终端确定其所属的网络切片的问题。
另外，通过上述步骤101-111可以看出，在建立任意一个网络切片时，为了实现上述网络切片的确定方法，需要预先配置接入网节点与NSF节点之间的接口，NSF节点内网络切片的切片标识与网络切片属性信息之间的对应关系，以及网络切片的切片标识与该网络切片内任意核心网节点的标识之间的对应关系。
具体的，如图5所示，上述网络切片的创建过程可参见下述步骤201-210。
201、OSS(operations support system，运营支撑系统)与NFV-MANO(network function virtualization management and orchestration,NFV管理编排)节点进行交互，创建网络切片，以得到该网络切片的切片标识。
202、OSS向NSF节点发送第一配置请求，该第一配置请求携带有该网络切片的切片标识、该网络切片的网络切片属性信息、该网络切片内待接入的核心网节点的标识以及该网络切片支持的信令类型。
203、若NSF节点不支持对上述信令类型的信令进行信令解析，则加载用于解析该信令类型信令的信令解析模块。
204、NSF节点建立该网络切片的切片标识与该网络切片的网络切片属性信息之间的对应关系，以及该网络切片的切片标识与上述核心网节点的标识之间的对应关系。
205、NSF节点向OSS发送第一配置完成响应，该第一配置完成响应用于向OSS指示NSF节点对该网络切片的初始化配置已经完成。
206、OSS向接入网节点发送第二配置请求，该第二配置请求携带有NSF节点的标识。
207、接入网节点根据第二配置请求设置接入网节点与NSF节点之间的接口。
208、接入网节点向OSS发送第二配置完成响应，该第二配置完 成响应用于向OSS指示NSF节点对该网络切片的初始化配置已经完成。
在步骤201中，可沿用5G网络中的NFV(network function virtualization，网络功能虚拟化)技术，通过网络切片实例化的方法创建新的网络切片，以得到该网络切片的切片标识。
在步骤202中，新的网络切片创建后，除了上述网络切片的切片标识，OSS还可以获取到网络切片的网络切片属性信息、该网络切片内待接入的核心网入口节点的标识以及该网络切片支持的信令类型，此时，OSS向NSF节点发送第一配置请求，该第一配置请求用于指示NSF节点对新建立的该网络切片进行初始化配置，以便于后续为终端确定其所属的网络切片。
具体的，该第一配置请求携带有该网络切片的切片标识、该网络切片的网络切片属性信息、该网络切片内待接入的核心网入口节点的标识以及该网络切片支持的信令类型。
其中，上述初始化配置具体包括：配置NSF节点对该网络切片支持的信令类型进行信令解析的功能，建立该网络切片的切片标识与该网络切片的网络切片属性信息之间的对应关系，以及建立该网络切片的切片标识与上述核心网入口节点的标识之间的对应关系。
这样，在步骤203中，NSF节点可以先查找是否已经创建过与该网络切片支持的信令类型对应的信令解析模块，如果没有查找到对应的信令解析模块，即当前NSF节点不支持对上述信令类型的信令进行信令解析，此时，NSF节点可以从OSS获取解析该信令类型信令的信令解析模块所需的数据或组件，进而根据这些数据或组件加载用于解析该信令类型信令的信令解析模块。
在步骤204中，NSF节点根据第一配置请求中携带的该网络切片的切片标识与该网络切片的网络切片属性信息，建立该网络切片的切片标识与该网络切片的网络切片属性信息之间的对应关系，以便于后续NSF节点通过确定终端是否满足上述网络切片属性信息，来确定终端是否属于该网络切片的切片标识所指示的网络切片。
并且，NSF节点根据第一配置请求中携带的该网络切片的切片标识与该网络切片内待接入的核心网入口节点的标识，建立该网络切片的切片标识与上述核心网入口节点的标识之间的对应关系，以便于后续NSF节点确定终端接入该网络切片内的哪个核心网节点。
完成上述初始化配置后，在步骤205中，NSF节点向OSS发送第一配置完成响应，向OSS指示NSF节点对该网络切片的初始化配置已经完成。
此时，在步骤206中，OSS向接入网节点发送第二配置请求，该第二配置请求携带有NSF节点的标识。
其中，NSF节点的标识可以为NSF节点的IP地址。
在步骤207中，接入网节点根据上述NSF节点，设置接入网节点与NSF节点之间的接口。
其中，接入网节点与NSF节点之间进行交互时使用的接口，可以沿用接入网节点与核心网节点之间进行交互时使用的各种接口。
另外，如步骤103中所述，上述第二配置请求中还可以携带有新建的该网络切片支持的信令类型与传输层端口号之间的对应关系，这样，接入网节点接收到终端的初始附着请求后，便可以根据该初始附着请求的信令类型，确定该初始附着请求的传输层端口号，那么，接入网节点可以直接把上述传输层端口号与该初始附着请求发送至NSF节点，NSF节点即可直接使用与传输层端口号对应的信令解析模块对上述初始附着请求进行信令解析，得到该终端的身份标识。
最后，在步骤208中，接入网节点向OSS发送第二配置完成响应，向OSS指示接入网节点已经完成对该网络切片的初始化配置，此时，OSS可以向用户确认已经创建完成该网络切片。
其中，步骤201-208中涉及NSF节点执行的步骤，可以由NSF节点根据上述图3中的处理器11执行存储器13中存储的程序指令来实现。
另外，基于上述步骤101-111所述的网络切片的确定方法，在 另一种可能的设计中，可以设置接入网节点具备对不同信令类型的信令进行信令解析的功能，此时，上述步骤101-103可以由下述步骤301-304代替，具体的，如图6所示，步骤301-304具体包括：
301、终端向接入网节点发送初始附着请求，该初始附着请求内携带有终端的身份标识。
302、接入网节点对该初始附着请求进行信令解析，得到终端的身份标识。
303、接入网节点通过统一接口将上述身份标识发送至NSF节点。
304、NSF节点接收接入网节点发送的身份标识。
在步骤301中，终端向接入网节点发送初始附着请求，该初始附着请求内携带有终端的身份标识。
这里，属于不同类型网络切片的终端发送初始附着请求时使用的信令类型是不同的。
因此，在步骤302中，接入网节点可以对该初始附着请求进行信令解析，从而得到初始附着请求内携带的该终端的身份标识，例如该终端的IMSI。
与上述NSF节点对接收到的该初始附着请求进行信令解析类似的，接入网节点内也可以预先设置针对不同信令类型信令的信令解析模块，那么，接入网节点便可以根据初始附着请求的信令类型，选择相应的信令解析模块进行信令解析，得到该终端的身份标识，具体选择相应的信令解析模块进行信令解析的方法可参见上述实施例的步骤103中的相关描述，此处不再赘述。
这样一来，可以大大简化NSF节点的内部结构，此时，接入网节点与NSF节点之间进行交互时使用的接口，无需沿用接入网节点与核心网节点之间进行交互时使用的各种接口，而可以通过统一的接口进行交互。
也就是说，与步骤101-103相比，接入网节点不是将终端的初始附着请求原封不动地发送到NSF节点，而是采用统一接口下规定 的协议格式进行消息的发送和接收，这样，接入网节点与NSF节点之间的接口设置更加简单易行。
那么，在步骤303中，接入网节点通过统一接口将上述身份标识发送至NSF节点。
在步骤304中，NSF节点接收接入网节点发送的身份标识。
后续，仍可沿用上述步骤104-111中描述的方法确定终端所属的网络切片，此处不再赘述。
其中，步骤301-304中涉及NSF节点执行的步骤，可以由NSF节点根据上述图3中的处理器11执行存储器13中存储的程序指令来实现。
这样，接入网节点通过解析终端的初始附着请求，获取该终端的身份标识，并通过统一接口发送至NSF节点；以使得NSF节点根据该身份标识，通过与HSS交互确定终端所属的网络切片的切片标识；那么，结合不同网络切片的切片标识与不同网络切片属性信息之间的对应关系，可为终端确定满足网络切片属性信息的网络切片，并将该网络切片确定为终端所属的网络切片，这样，便解决了如何在5G网络中为终端确定其所属的网络切片的问题。
图7为本发明实施例提供的一种NSF节点的结构示意图，本发明实施例提供的NSF节点可以用于实施上述图1-图6所示的本发明各实施例实现的方法，为了便于说明，仅示出了与本发明实施例相关的部分，具体技术细节未揭示的，请参照图1-图6所示的本发明各实施例。
具体的，该NSF节点包括：
获取单元21，用于获取终端的身份标识；以及接收HSS发送的所述网络切片的切片标识，所述切片标识为所述HSS根据所述身份标识所确定；
发送单元22，用于将所述身份标识发送至HSS；
确定单元23，用于根据所述切片标识，确定所述终端所属的网络切片。
进一步地，所述NSF节点内预先存储有网络切片的切片标识与网络切片属性信息之间的对应关系，每个网络切片属性信息包括：该网络切片属性信息对应的网络切片所支持的终端类型、业务类型和位置范围中的至少一种；其中，
所述获取单元21，还用于获取所述终端的辅助信息，所述辅助信息包括所述终端的终端类型、所述终端请求的业务类型和所述终端的位置信息中的至少一种；
所述确定单元23，具体用于根据预先存储的所述网络切片的切片标识与网络切片属性信息之间的对应关系，查询与所述切片标识对应的网络切片属性信息；若所述辅助信息满足所述网络切片属性信息，则将所述切片标识所指示的网络切片确定为所述终端所属的网络切片。
进一步地，所述NSF节点内预先存储有网络切片的切片标识与该网络切片内核心网入口节点的标识之间的对应关系；其中，
所述确定单元23，还用于根据预先存储的所述网络切片的切片标识与该网络切片内核心网入口节点的标识之间的对应关系，确定与所述切片标识对应的核心网入口节点的标识；
所述发送单元22，还用于将所述核心网入口节点的标识发送至接入网节点，所述核心网入口节点的标识用于指示所述接入网节点将所述终端接入与所述核心网入口节点的标识对应的核心网入口节点。
进一步地，所述获取单元21，具体用于通过统一接口接收接入网节点发送的所述终端的身份标识。
进一步地，如图8所示，所述NSF节点还包括解析单元24，其中，
所述获取单元21，还用于接收接入网节点发送的所述终端的初始附着请求，所述初始附着请求内携带有所述终端的身份标识；
所述解析单元24，用于对所述初始附着请求进行信令解析，得到所述终端的身份标识。
进一步地，所述NSF节点内预先存储有信令类型与该信令类型的解析标识之间的对应关系；其中，
所述解析单元24，具体用于根据预先存储的所述信令类型与该信令类型的解析标识之间的对应关系，确定与所述初始附着请求的信令类型对应的解析标识；根据所述解析标识，对所述初始附着请求进行信令解析，得到所述终端的身份标识。
或者，所述获取单元21，还用于接收所述接入网节点发送的与所述初始附着请求的信令类型对应的解析标识；
所述解析单元24，具体用于根据所述解析标识，对所述初始附着请求进行信令解析，得到所述终端的身份标识。
在本发明提供的实施例中，NSF节点内的获取单元21和发送单元22的具体功能，可以通过图3所示的计算机设备100中的处理器11调用通信接口14来实现；NSF节点内的确定单元23和解析单元24的具体功能，可以由图3所示的计算机设备100中处理器11调用存储器13中存储的执行本发明方案的应用程序代码来实现。
至此，本发明的实施例提供一种NSF节点，该NSF节点通过获取该终端的身份标识，根据该身份标识与HSS交互，以确定终端所属的网络切片的切片标识；这样，结合不同网络切片的切片标识与不同网络切片属性信息之间的对应关系，为终端确定满足网络切片属性信息的网络切片，并将该网络切片确定为终端所属的网络切片，这样，便解决了如何在5G网络中为终端确定其所属的网络切片的问题。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统， 装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围 之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (16)

  1. 一种网络切片的确定方法，其特征在于，包括：
    网络选择功能NSF节点获取终端的身份标识；
    所述NSF节点将所述身份标识发送至归属签约用户服务器HSS；
    所述NSF节点接收所述HSS发送的网络切片的切片标识，所述切片标识为所述HSS根据所述身份标识所确定的；
    所述NSF节点根据所述切片标识，确定所述终端所属的网络切片。
  2. 根据权利要求1所述的方法，其特征在于，所述NSF节点内存储有网络切片的切片标识与网络切片属性信息之间的对应关系，所述网络切片属性信息包括：与所述网络切片属性信息对应的网络切片所支持的终端类型、业务类型和位置范围中的至少一种；
    其中，所述NSF节点根据所述切片标识确定所述终端所属的网络切片，包括：
    所述NSF节点根据所述网络切片的切片标识与网络切片属性信息之间的对应关系，查询与所述切片标识对应的网络切片属性信息；
    所述NSF节点获取所述终端的辅助信息，所述辅助信息包括所述终端的终端类型、所述终端请求的业务类型和所述终端的位置信息中的至少一种；
    若所述辅助信息与所述网络切片属性信息相匹配，则所述NSF节点将所述切片标识所指示的网络切片确定为所述终端所属的网络切片。
  3. 根据权利要求1或2所述的方法，其特征在于，所述NSF节点内存储有网络切片的切片标识与所述网络切片内核心网入口节点的标识之间的对应关系；
    其中，在所述NSF节点根据所述切片标识，确定所述终端所属的网络切片之后，还包括：
    所述NSF节点根据所述网络切片的切片标识与所述网络切片的核心网入口节点的标识之间的对应关系，确定与所述切片标识对应的 核心网入口节点的标识；
    所述NSF节点将所述核心网入口节点的标识发送至接入网节点，所述核心网入口节点的标识用于指示所述接入网节点将所述终端接入与所述核心网入口节点的标识对应的核心网入口节点。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，NSF节点获取终端的身份标识，包括：
    所述NSF节点通过统一接口接收接入网节点发送的所述终端的身份标识。
  5. 根据权利要求1-3中任一项所述的方法，其特征在于，NSF节点获取终端的身份标识，包括：
    所述NSF节点接收接入网节点发送的所述终端的初始附着请求，所述初始附着请求内携带有所述终端的身份标识；
    所述NSF节点对所述初始附着请求进行信令解析，得到所述终端的身份标识。
  6. 根据权利要求5所述的方法，其特征在于，所述NSF节点内存储有信令类型与所述信令类型的解析标识之间的对应关系；
    其中，所述NSF节点对所述初始附着请求进行信令解析，得到所述终端的身份标识，包括：
    所述NSF节点根据所述信令类型与所述信令类型的解析标识之间的对应关系，确定与所述初始附着请求的信令类型对应的解析标识；
    所述NSF节点根据所述解析标识，对所述初始附着请求进行信令解析，得到所述终端的身份标识。
  7. 根据权利要求5所述的方法，其特征在于，在所述NSF节点对所述初始附着请求进行信令解析，得到所述终端的身份标识之前，还包括：
    所述NSF节点接收所述接入网节点发送的与所述初始附着请求的信令类型对应的解析标识；
    其中，所述NSF节点对所述初始附着请求进行信令解析，得到所 述终端的身份标识，包括：
    所述NSF节点根据所述解析标识，对所述初始附着请求进行信令解析，得到所述终端的身份标识。
  8. 根据权利要求6或7所述的方法，其特征在于，所述解析标识为所述初始附着请求的传输层端口号。
  9. 一种网络选择功能NSF节点，其特征在于，包括：
    获取单元，用于获取终端的身份标识；以及接收归属签约用户服务器HSS发送的所述网络切片的切片标识，所述切片标识为所述HSS根据所述身份标识所确定；
    发送单元，用于将所述身份标识发送至HSS；
    确定单元，用于根据所述切片标识，确定所述终端所属的网络切片。
  10. 根据权利要求9所述的NSF节点，其特征在于，所述NSF节点内存储有网络切片的切片标识与网络切片属性信息之间的对应关系，每个所述网络切片属性信息包括：与所述网络切片属性信息对应的网络切片所支持的终端类型、业务类型和位置范围中的至少一种；其中，
    所述获取单元，还用于获取所述终端的辅助信息，所述辅助信息包括所述终端的终端类型、所述终端请求的业务类型和所述终端的位置信息中的至少一种；
    所述确定单元，具体用于根据所述网络切片的切片标识与网络切片属性信息之间的对应关系，查询与所述切片标识对应的网络切片属性信息；若所述辅助信息与所述网络切片属性信息相匹配，则将所述切片标识所指示的网络切片确定为所述终端所属的网络切片。
  11. 根据权利要求9或10所述的NSF节点，其特征在于，所述NSF节点内存储有网络切片的切片标识与所述网络切片内核心网入口节点的标识之间的对应关系；其中，
    所述确定单元，还用于根据所述网络切片的切片标识与该网络切片内核心网入口节点的标识之间的对应关系，确定与所述切片标识对 应的核心网入口节点的标识；
    所述发送单元，还用于将所述核心网入口节点的标识发送至接入网节点，所述核心网入口节点的标识用于指示所述接入网节点将所述终端接入与所述核心网入口节点的标识对应的核心网入口节点。
  12. 根据权利要求9-11中任一项所述的NSF节点，其特征在于，
    所述获取单元，具体用于通过统一接口接收接入网节点发送的所述终端的身份标识。
  13. 根据权利要求9-11中任一项所述的NSF节点，其特征在于，所述NSF节点还包括解析单元，其中，
    所述获取单元，还用于接收接入网节点发送的所述终端的初始附着请求，所述初始附着请求内携带有所述终端的身份标识；
    所述解析单元，用于对所述初始附着请求进行信令解析，得到所述终端的身份标识。
  14. 根据权利要求13所述的NSF节点，其特征在于，所述NSF节点内存储有信令类型与所述信令类型的解析标识之间的对应关系；其中，
    所述解析单元，具体用于根据所述信令类型与所述信令类型的解析标识之间的对应关系，确定与所述初始附着请求的信令类型对应的解析标识；根据所述解析标识，对所述初始附着请求进行信令解析，得到所述终端的身份标识。
  15. 根据权利要求13所述的NSF节点，其特征在于，
    所述获取单元，还用于接收所述接入网节点发送的与所述初始附着请求的信令类型对应的解析标识；
    所述解析单元，具体用于根据所述解析标识，对所述初始附着请求进行信令解析，得到所述终端的身份标识。
  16. 一种网络切片的确定系统，其特征在于，所述系统包括如权利要求9-15中任意一项所述的网络选择功能NSF节点，以及与所述NSF节点均相连的归属签约用户服务器HSS和接入网节点。
PCT/CN2016/084807 2016-06-03 2016-06-03 一种网络切片的确定方法、装置及系统 WO2017206183A1 (zh)

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