WO2020215186A1 - Appareil et procédé de sélection de tranche de réseau - Google Patents

Appareil et procédé de sélection de tranche de réseau Download PDF

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Publication number
WO2020215186A1
WO2020215186A1 PCT/CN2019/083722 CN2019083722W WO2020215186A1 WO 2020215186 A1 WO2020215186 A1 WO 2020215186A1 CN 2019083722 W CN2019083722 W CN 2019083722W WO 2020215186 A1 WO2020215186 A1 WO 2020215186A1
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WO
WIPO (PCT)
Prior art keywords
nssai
terminal
network
value
network device
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PCT/CN2019/083722
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English (en)
Chinese (zh)
Inventor
王丁
段小嫣
崔立伟
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华为技术有限公司
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Priority to PCT/CN2019/083722 priority Critical patent/WO2020215186A1/fr
Publication of WO2020215186A1 publication Critical patent/WO2020215186A1/fr

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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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • This application relates to the field of communication technology, and in particular to a method and device for network slice selection.
  • Network slicing is essentially a service, which can be a combination of network functions and resources required to complete a certain business. Network slicing can realize different service requirements, and the terminal can choose to use different network slicing according to its own service requirements.
  • the terminal can determine the network slice used by itself through the registration and session establishment process.
  • S-NSSAI is used to represent the slice in the protocol
  • each S-NSSAI represents a unique network slice.
  • the terminal In the registration process, if the terminal does not know in advance which network slices the current user has subscribed to, the terminal cannot specify which network slices to register during registration. At this time, the network device will deliver the default slice in the contracted network slice to the terminal, but the default slice may not be able to meet the service requirements of the terminal. For example, the terminal expects to obtain enhanced mobile broadband (eMBB) services, but the default slice in the subscriber's signed slice is the slice of ultra-reliable and low-latency communications (uRLLC) (Although the user has also subscribed to slices of eMBB, eMBB is not the default slice). That is to say, when the terminal needs to use network slices, the slices delivered by the network equipment are not consistent with the slices expected by the terminal, which makes it impossible to meet the service requirements of the terminal.
  • eMBB enhanced mobile broadband
  • uRLLC ultra-reliable and low-latency communications
  • the terminal sends a session establishment request message to the network device, and receives a session establishment acceptance message from the network device.
  • the slices registered by the terminal include two eMBB slices, eMBB slice 1 and eMBB slice 2.
  • the terminal specifies the eMBB slice 1 that it wants to use in the session establishment request message, but the DN that the terminal wants to access does not support eMBB slice 1.
  • the network device may reject the session establishment request message of the terminal, causing the terminal to fail to obtain the expected eMBB service.
  • the terminal may initiate a second session establishment request message.
  • the second session establishment request message specifies the eMBB slice 2 that the terminal wants to use. At this time, if the DN that the terminal wants to access supports eMBB slice 2, the terminal Access to services provided by eMBB slice 2. It can be seen that in the prior art, when the network slice designated by the terminal is different from the network slice supported by the DN, on the one hand, it is likely to cause the terminal service to fail. On the other hand, if the terminal wants to perform the expected service, it is likely to need to initiate multiple session establishment request messages. The signaling overhead is high, and the terminal attempts to initiate the session establishment request message multiple times, which will increase service delay.
  • the embodiments of the present application provide a network slice selection method and device, which can provide the requested network slice service to the terminal and meet the service requirements of the terminal.
  • this application provides a network slice selection method, which can be executed by a network device or a component in the network device (such as a chip system).
  • the method includes: the network device receives the first S-NSSAI value from the terminal, and sends one or more second S-NSSAI values to the terminal.
  • the first S-NSSAI value includes SST and the first SD; or, the first S-NSSAI value includes SST and does not include SD; at least one second S-NSSAI value among one or more second S-NSSAI values
  • the SST of is the same as the SST of the first S-NSSAI value.
  • first S-NSSAI value is a general term for a type of S-NSSAI value, and the S-NSSAI value that meets any of the following preset conditions may be referred to as the first S-NSSAI value.
  • Preset condition 1 The S-NSSAI value including the terminal SST and the first SD is called the first S-NSSAI value.
  • the first SD is a pre-configured SD.
  • the pre-configured SD can be pre-defined by the protocol, and the equipment manufacturer can configure the corresponding SD for the factory-built terminal according to the protocol definition.
  • the value of SD pre-configured for the terminal is 0XFFDD.
  • SST includes but is not limited to at least one of eMBB, uRLLC, and mMTC.
  • Preset condition 2 The S-NSSAI value that includes SST and does not include SD can be called the first S-NSSAI value.
  • the foregoing first S-NSSAI value may also be referred to as a wildcard S-NSSAI value.
  • the network device receives the first S-NSSAI value from the terminal, and sends one or more second S-NSSAI values to the terminal.
  • the first S-NSSAI value has two formats.
  • the first S-NSSAI value includes the SST and the first slice distinguishing identifier SD.
  • the first S-NSSAI value includes SST and does not include SD.
  • the SST of at least one second S-NSSAI value among the one or more second S-NSSAI values is the same as the SST of the first S-NSSAI value.
  • This embodiment of the application defines the first S-NSSAI value used to request available network slices.
  • the terminal when the terminal needs to use network slicing, it only needs to send the first S-NSSAI value to the network device. In this way, the network device can feed back the second S-NSSAI value to the terminal after receiving the first S-NSSAI value. Since there is at least one second S-NSSAI value whose SST is the same as the SST requested by the terminal, the service requirements of the terminal can be met, and the success rate of the terminal in obtaining network services can be improved.
  • the network device determines that the first S-NSSAI value is received, on the one hand, it may not match the pre-configured SD value of the first S-NSSAI value with the SD value supported by the network side. , To avoid the problem of service failure when the network side does not support the pre-configured SD value.
  • the network device matches the requested SST in the first S-NSSAI value with the SST supported by the network side.
  • the network device can indicate the same SST to the terminal, To meet the business needs of the terminal.
  • the first SD is a pre-configured SD.
  • the network slice selection method of this application can be applied to the terminal registration process.
  • the network device receiving the first S-NSSAI value from the terminal includes:
  • the network device receives a registration request message from the terminal, and the registration request message includes the first S-NSSAI value.
  • the cell format shown in Table 3 may be used. That is, the registration request message carries the NSSAI shown in Table 3, and the NSSAI carries the first S-NSSAI value.
  • the specific format of the cells is not limited here.
  • the network device sends one or more second S-NSSAI values to the terminal, including: the network device sends a registration acceptance message to the terminal, and the registration acceptance message includes one or more second S-NSSAI values .
  • the registration acceptance message sent by the network device to the terminal carries the information element shown in Table 3, namely NSSAI, and the NSSAI may carry one or more second S-NSSAI values.
  • the method further includes: the network device obtains one or more second S-NSSAI values according to any one or more of the following information: first S-NSSAI value, network slicing priority, user subscription information.
  • the priority of network slicing can be preset.
  • the priority of different network slices is determined according to at least one index such as bandwidth, rate, delay, and reliability of the network slice.
  • the priority of the network slicing can also be determined according to other indicators, which is not limited in the embodiment of the present application.
  • the user subscription information is used to indicate the network slice of the user subscription.
  • the network device can select one or more second S-NSSAI values for the terminal according to a certain strategy, such as the network slicing priority listed above, subscription information, etc. (the SST is the same as the SST expected by the terminal, That is, it is the same as the SST of the first S-NSSAI value) to match the service requirements of the terminal.
  • a certain strategy such as the network slicing priority listed above, subscription information, etc.
  • the network slice selection method of this application can be applied to the session establishment process.
  • the network device receiving the first S-NSSAI value from the terminal includes: the network device receives the session establishment request message from the terminal, and the session establishment request message includes the first S-NSSAI value.
  • the network device sending one or more second S-NSSAI values to the terminal includes: the network device sends a session establishment accept message to the terminal, and the session establishment accept message includes a second S-NSSAI value.
  • the session establishment acceptance message received by the network device from the terminal carries the information elements shown in Table 1, that is, carries the S-NSSAI, and the S-NSSAI carries the second S-NSSAI value.
  • the method further includes: the network device obtains a second S-NSSAI value according to any one or more of the following information: the first S-NSSAI value, DNN, network slice priority, and user subscription information.
  • this application provides a network slice selection method, which can be executed by a terminal or a component in the terminal (such as a chip system).
  • the method includes: a terminal sends a first single network slice selection assistance information value S-NSSAI value to a network device, and receives one or more second S-NSSAI values from the network device.
  • the SST of at least one second S-NSSAI value among the one or more second S-NSSAI values is the same as the SST of the first S-NSSAI value.
  • the first S-NSSAI value includes the slice service type SST and the first slice distinguishing identifier SD; or, the first S-NSSAI value includes SST and does not include SD.
  • the first SD is a pre-configured SD.
  • the terminal sending the first S-NSSAI value to the network device includes:
  • the terminal sends a registration request message to the network device, and the registration request message includes the first S-NSSAI value.
  • the terminal receiving one or more second S-NSSAI values from the network device includes: the terminal receives a registration acceptance message from the network device, and the registration acceptance message includes one or more second S-NSSAI values.
  • the terminal sending the first S-NSSAI value to the network device includes: the terminal sends a session establishment request message to the network device, and the session establishment request message includes the first S-NSSAI value.
  • the terminal receiving one or more second S-NSSAI values from the network device includes: the terminal receives a session establishment accept message from the network device, and the session establishment accept message includes a second S-NSSAI value.
  • the present application provides a network slice selection device, which can be a network device or a device that can support the network device to implement any of the design functions of the first aspect mentioned above, and it can be used in conjunction with the network device, for example, It is a device in a network device (such as a chip in a network device).
  • the device includes a communication interface and a processor.
  • the communication interface is used to receive the first S-NSSAI value from the terminal.
  • the processor is configured to determine the second S-NSSAI value according to the first S-NSSAI value.
  • the communication interface is also used to send one or more second S-NSSAI values to the terminal.
  • the first S-NSSAI value includes SST and the first SD; or, the first S-NSSAI value includes SST and does not include SD; at least one second S-NSSAI value among one or more second S-NSSAI values
  • the SST of is the same as the SST of the first S-NSSAI value.
  • the first SD is a pre-configured SD.
  • the network slice selection method of this application can be applied to the terminal registration process.
  • the communication interface is used to receive the first S-NSSAI value from the terminal, and includes: is used to receive a registration request message from the terminal, and the registration request message includes the first S-NSSAI value.
  • the communication interface is used to send one or more second S-NSSAI values to the terminal, including: used to send a registration acceptance message to the terminal, and the registration acceptance message includes one or more second S-NSSAI values. -NSSAI value.
  • the processor is also used to obtain one or more second S-NSSAI values based on any one or more of the following information: first S-NSSAI value, network slicing priority, user subscription information.
  • the network slice selection method of this application can be applied to the session establishment process.
  • the communication interface is used for receiving the first S-NSSAI value from the terminal, including: receiving a session establishment request message from the terminal, and the session establishment request message includes the first S-NSSAI value.
  • the communication interface is used to send one or more second S-NSSAI values to the terminal, including: used to send a session establishment accept message to the terminal, and the session establishment accept message includes a second S-NSSAI value.
  • the processor is further configured to obtain a second S-NSSAI value according to any one or more of the following information: the first S-NSSAI value, DNN, network slice priority, and user subscription information.
  • the present application provides a network slice selection device.
  • the device can be a terminal or a device that can support the terminal to realize terminal functions. It can be used in conjunction with the terminal. For example, it can be a device in the terminal (such as Chip in).
  • the device includes a communication interface.
  • the communication interface is used to send the first single network slice selection auxiliary information value S-NSSAI value to the network device, and is also used to receive one or more second S-NSSAI values from the network device.
  • the SST of at least one second S-NSSAI value among the one or more second S-NSSAI values is the same as the SST of the first S-NSSAI value.
  • the first S-NSSAI value includes the slice service type SST and the first slice distinguishing identifier SD; or, the first S-NSSAI value includes SST and does not include SD.
  • the first SD is a pre-configured SD.
  • the communication interface used to send the first S-NSSAI value to the network device includes: used to send a registration request message to the network device, and the registration request message includes the first S-NSSAI value.
  • the communication interface is used to receive one or more second S-NSSAI values from the network device, including: receiving a registration acceptance message from the network device, and the registration acceptance message includes one or more second S-NSSAI values. S-NSSAI value.
  • the communication interface used to send the first S-NSSAI value to the network device includes: used to send a session establishment request message to the network device, and the session establishment request message includes the first S-NSSAI value.
  • the communication interface is used to receive one or more second S-NSSAI values from the network device, including: receiving a session establishment accept message from the network device, and the session establishment accept message includes a second S-NSSAI value. -NSSAI value.
  • the present application provides a network slice selection device, which includes a communication unit and a processing unit.
  • the communication unit is configured to receive the first S-NSSAI value from the terminal.
  • the processing unit is configured to determine the second S-NSSAI value according to the first S-NSSAI value.
  • the communication unit is also used to send one or more second S-NSSAI values to the terminal.
  • the first S-NSSAI value includes SST and the first SD; or, the first S-NSSAI value includes SST and does not include SD; at least one second S-NSSAI value among one or more second S-NSSAI values
  • the SST of is the same as the SST of the first S-NSSAI value.
  • the first SD is a pre-configured SD.
  • the network slice selection method of this application can be applied to the terminal registration process.
  • the communication unit is configured to receive the first S-NSSAI value from the terminal, including: being configured to receive a registration request message from the terminal, and the registration request message includes the first S-NSSAI value.
  • the communication unit is used to send one or more second S-NSSAI values to the terminal, including: used to send a registration acceptance message to the terminal, and the registration acceptance message includes one or more second S-NSSAI values. -NSSAI value.
  • the processing unit is also used to obtain one or more second S-NSSAI values based on any one or more of the following information: first S-NSSAI value, network slicing priority, user subscription information.
  • the network slice selection method of this application can be applied to the session establishment process.
  • the communication unit is configured to receive the first S-NSSAI value from the terminal, including: being configured to receive a session establishment request message from the terminal, and the session establishment request message includes the first S-NSSAI value.
  • the communication unit is used to send one or more second S-NSSAI values to the terminal, including: used to send a session establishment accept message to the terminal, and the session establishment accept message includes a second S-NSSAI value.
  • the processing unit is further configured to obtain a second S-NSSAI value according to any one or more of the following information: the first S-NSSAI value, DNN, network slice priority, and user subscription information.
  • the present application provides a network slice selection device, which includes a communication unit.
  • the communication unit is configured to send the first single network slice selection auxiliary information value S-NSSAI value to the network device, and is also configured to receive one or more second S-NSSAI values from the network device.
  • the SST of at least one second S-NSSAI value among the one or more second S-NSSAI values is the same as the SST of the first S-NSSAI value.
  • the first S-NSSAI value includes the slice service type SST and the first slice distinguishing identifier SD; or, the first S-NSSAI value includes SST and does not include SD.
  • the first SD is a pre-configured SD.
  • the communication unit configured to send the first S-NSSAI value to the network device, includes: being configured to send a registration request message to the network device, and the registration request message includes the first S-NSSAI value.
  • the communication unit is configured to receive one or more second S-NSSAI values from the network device, including: receiving a registration acceptance message from the network device, and the registration acceptance message includes one or more second S-NSSAI values. S-NSSAI value.
  • the communication unit configured to send the first S-NSSAI value to the network device, includes: being configured to send a session establishment request message to the network device, and the session establishment request message includes the first S-NSSAI value.
  • the communication unit is configured to receive one or more second S-NSSAI values from the network device, including: receiving a session establishment acceptance message from the network device, and the session establishment acceptance message includes a second S-NSSAI value. -NSSAI value.
  • the registration request message includes the S-NSSAI value (Requested S-NSSAI value) requested by the terminal, and the Requested S-NSSAI value includes the first Requested S- value.
  • NSSAI value and third S-NSSAI value include SST and second SD, and the second SD is different from the first SD, that is, the second SD is not a pre-configured SD.
  • the pre-configured SD is 0XFFDD, and the second SD may be another SD except 0XFFDD. That is to say, unlike the first S-NSSAI value, the third S-NSSAI value contains a non-preconfigured SD value. Therefore, the third S-NSSAI value cannot trigger the network device to feed back the second S-NSSAI value.
  • At least one second S-NSSAI value of the multiple second S-NSSAI values includes information of the default network slice in the network slice that the user has subscribed to.
  • the present application provides a network slice selection device, which is used to implement the function of the network device in the first aspect described above, or is used to implement the function of the terminal in the second aspect described above.
  • the present application provides a network slice selection device, which has the function of realizing the network slice selection method of any one of the above-mentioned first aspects, or the device has the network slice selection method of any one of the above-mentioned second aspects.
  • Function of slice selection method This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • a network slice selection device including: a processor and a memory; the memory is used to store computer execution instructions, and when the network slice selection device is running, the processor executes the computer execution instructions stored in the memory, So that the network slice selection apparatus executes the network slice selection method according to any one of the above-mentioned first aspect, or makes the network slice selection apparatus execute the network slice selection method according to any one of the above-mentioned second aspect.
  • a network slice selection device including: a processor; the processor is configured to couple with a memory, and after reading an instruction in the memory, execute the network slice selection method according to any one of the foregoing first aspect according to the instruction Or, execute the network slice selection method according to any one of the above-mentioned second aspects according to the instruction.
  • an embodiment of the present application provides a network slice selection device.
  • the device may be a chip system.
  • the chip system includes a processor and a memory for implementing the functions of the method described in the first aspect. Or, it is used to implement the function of the method described in the second aspect.
  • the chip system can be composed of chips, or can include chips and other discrete devices.
  • a network slice selection device In a twelfth aspect, a network slice selection device is provided.
  • the device may be a circuit system, the circuit system includes a processing circuit, and the processing circuit is configured to execute the network slice selection method according to any one of the above aspects.
  • an embodiment of the present application also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method in any of the above aspects.
  • the embodiments of the present application also provide a computer program product, including instructions, which when run on a computer, cause the computer to execute the method in any of the above aspects.
  • an embodiment of the present application provides a system.
  • the system includes a network device that executes the network slice selection method of any one of the first aspect and the first aspect, and a network device that executes the second aspect and any one of the second aspect The terminal of the network slice selection method.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of the architecture of a network slice selection system provided by an embodiment of the application.
  • FIG. 3 is a schematic flowchart of a method for selecting a network slice according to an embodiment of the application
  • FIG. 4 is a schematic flowchart of another network slice selection method provided by an embodiment of this application.
  • FIG. 5 is a schematic flowchart of another network slice selection method provided by an embodiment of this application.
  • FIG. 6 is a schematic structural diagram of a network slice selection apparatus provided by an embodiment of this application.
  • FIG. 7 is a schematic structural diagram of another network slice selection apparatus provided by an embodiment of the application.
  • “at least one” generally refers to one or more, and “multiple” generally refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, both A and B exist, and B exists alone, where A, B can be singular or plural.
  • the character "/” generally indicates that the associated objects are in an "or” relationship. For example, A/B can indicate A or B.
  • S-NSSAI single network slice selection assistance information
  • S-NSSAI information-element identifier, IEI
  • IEI element identifier
  • Length of S-NSSAI contents represents the length of the cell (it can be in bytes).
  • SST is used to indicate which network service the slice can provide.
  • Network services include but are not limited to eMBB services, uRLLC services, and mMTC services.
  • the SST length is 1 byte.
  • SST includes standardized (ie standard SST value (value)) and operator-defined (ie non-standard SST value) types. Among them, 0-127 can be used to define the standard SST value, and 128-255 can be used for the operator-defined SST value. Refer to Table 2 below. Currently, only the content with SST value of 1-3 is defined in the agreement:
  • the SSTs of the two slices are the same, which means that the service types indicated by the SSTs of the two slices are the same, that is, the SST values are the same. For example, if the SST of slice 1 is eMBB (SST value is 1), and the SST of slice 2 is also eMBB (SST value is 1), then the SSTs of slice 1 and slice 2 are the same.
  • SD is optional information that supplements SST and is used to distinguish multiple network slices of the same SST.
  • the value of SD is not defined by the agreement, but specified by the operator.
  • the SD length can be 3 bytes.
  • the SST of slice 1 is eMBB
  • the SST of slice 2 is also eMBB
  • the SD of slice 1 is 0XFFDD
  • the SD of slice 2 is 0XFFD0. Since the SDs of the two slices are different, the two slices are different slices.
  • the SST (optional SD) in the S-NSSAI cell can be used to represent a single network slice selection assistance information (S-NSSAI) value.
  • S-NSSAI network slice selection assistance information
  • An S-NSSAI value can be used to represent a network slice. In this way, since one S-NSSAI only carries one S-NSSAI value, one S-NSSAI can represent one network slice.
  • S-NSSAI can be used for the PDU session establishment process. Since the terminal usually only establishes a session on one network slice, the network device will send an S-NSSAI to the terminal to instruct the terminal to establish a session on one network slice.
  • Mapped configured SST the current SST is mapped to the home public land mobile network (home public land mobile network, HPLMN) corresponding to the SST.
  • home public land mobile network home public land mobile network, HPLMN
  • Mapped configured SD the corresponding SD when the current SD is mapped to HPLMN.
  • Network slice selection assistance information (network slice selection assistance information, NSSAI):
  • NSSAI refers to a collection of one or more S-NSSAI values.
  • NSSAI can be used to represent one or more network slices.
  • the cell structure of NSSAI is shown in Table 3 below:
  • NSSAI IEI represents the identity of the NSSAI cell.
  • Length of NSSAI contents represents the length of the NSSAI cell (it can be in bytes).
  • the information element of the NSSAI may include one or more S-NSSAI values. Different from NSSAI, the above S-NSSAI only carries one S-NSSAI value.
  • NSSAI can be applied in the registration process.
  • the terminal sends an NSSAI to the network device to request registration of one or more network slices, and the network device feeds back the NSSAI to the terminal.
  • the fed back NSSAI can be used to identify one or more network slices.
  • the network slice selection method provided in the embodiments of the present application can be applied to a 5G communication system, or a future evolution system, or other similar communication systems.
  • the embodiment of the present application mainly uses the application in the 5G system as an example to illustrate the network slice selection method of the embodiment of the present application, which is described in a unified manner here, and will not be described in detail below.
  • 5G communication systems include systems in non-roaming scenarios and systems in roaming scenarios.
  • the system of each scenario may be a system based on a service interface, or a system based on a reference point.
  • the specific description based on the service interface and the reference point can refer to the prior art, which will not be repeated here.
  • the following takes a 5G system used in a non-roaming scenario, and the 5G system is based on a service-oriented interface as an example for description.
  • FIG. 1 a network architecture to which the embodiment of the present application is applicable is shown.
  • the system includes Network Slice Selection Function (NSSF), Network Exposure Function (NEF), Network Storage Function (Network Repository Function, NRF), Policy Control Function (Policy Control) Function, PCF), Application Function (Application Function, AF), Unified Data Management (UDM), Authentication Server Function (Authentication Server Function, AUSF), Access and Mobility Management Function (Core Access and Mobility Management) Function, AMF), session management function (Session Management Function, SMF), access network (Access Network, AN) network elements, where AN includes wired access network and wireless access network (Radio Access Network, RAN), user Network elements or equipment such as User Plane Function (UPF), data network (DN) network elements, and terminals.
  • NSF Network Slice Selection Function
  • NRF Network Exposure Function
  • NRF Network Repository Function
  • Policy Control Policy Control
  • PCF Policy Control Function
  • UDM Unified Data Management
  • Authentication Server Function Authentication Server Function
  • AUSF Access and Mobility Management Function
  • SMF Session Management Function
  • Access Network Access Network
  • the terminal accesses the AN in a wireless or wired manner.
  • the wireless method can be, for example, wireless-fidelity (Wireless-Fidelity, WiFi) access, or a cellular network (such as E-UTRA, NR, etc.) to access the AN, the terminal Communicate with AMF through N1; AN communicates with UPF through N3, AN communicates with AMF through N2; UPF communicates with SMF through N4, and UPF communicates with DN network elements through N6; SMF communicates with AMF through N11 (not shown in Figure 1) Communication, SMF communicates with UDM through N10 (not shown in Figure 1), SMF communicates with PCF through N7 (not shown in Figure 1); AMF communicates with AUSF through N12 (not shown in Figure 1), AUSF communicates with UDM through N13 (not shown in Figure 1). AF communicates with PCF through N5.
  • wireless-fidelity Wireless-Fidelity, WiFi
  • a cellular network such as E-UTRA, NR
  • the above-mentioned network elements can communicate in a certain way (for example, the terminal communicates with AMF through N1).
  • the terminal communicates with AMF through N1.
  • the above only lists some of the ways of communication between the network elements. To simplify the description, In the embodiment of this application, the communication mode between other network elements will not be described in detail.
  • the terminals involved in the embodiments of the present application may include various handheld devices with communication functions, wearable devices, computing devices, or other processing devices connected to a modem; and may also include personal digital assistants (personal digital assistants). , PDA) computer, tablet computer, laptop computer (laptop computer), machine type communication (MTC) terminal, user equipment (UE), etc.
  • PDA personal digital assistant
  • MTC machine type communication
  • UE user equipment
  • a terminal it can also refer to a chip system such as a UE.
  • the embodiment of the present application does not limit the implementation form of the terminal.
  • the concept of network slicing is proposed, that is, on a physical infrastructure, using SDN, NFV and other technologies to build multiple logical networks to meet different requirements.
  • Types of application scenarios Combined with the 5G system shown in Figure 1, when the terminal performs services, different network slices may be used according to different service requirements. For example, eMBB slicing is used when mobile phones perform broadband services, and mMTC slicing is used when car networking terminals (such as vehicle terminals) perform car networking services.
  • the terminal sends a message to the network side, and the message can specify which slice to use. If the network side also supports the slice specified by the terminal, the terminal can perform services through the slice.
  • each network element and the name of the interface between each network element in Figure 1 are just an example, and the name of each network element or the interface between each network element in a specific implementation may be other names, or network elements It can also be called an entity, which is not specifically limited in the embodiments of the present application. All or part of the network elements in Figure 1 may be physical physical network elements, or virtualized network elements, which are not limited here.
  • a certain network element obtains information from another network element (for example: B network element), which may mean that A network element directly receives information from B network element, or It means that A network element receives information from B network element via other network elements (for example: C network element).
  • B network element may mean that A network element directly receives information from B network element, or It means that A network element receives information from B network element via other network elements (for example: C network element).
  • C network element can transparently transmit the information, or process the information, for example: carry the information in different messages for transmission or filter the information , Only send the filtered information to A network element.
  • network element A when network element A sends information to network element B, it can mean that network element A sends information directly to network element B, or it can mean that network element A sends information to network element B via other network elements (for example, network element C). Yuan) sends information to the B network element.
  • an embodiment of the present application provides a network slice selection system 200.
  • the network slice selection system 200 includes a terminal 201 and a network device 202.
  • the terminal 201 is configured to send a first S-NSSAI value to the network device 202, and receive one or more second S-NSSAI values from the network device 202.
  • the first S-NSSAI value is used to request network slicing, and can also be used to trigger the network device to feed back the second S-NSSAI value.
  • the first S-NSSAI value is a general term for a type of S-NSSAI value, and the S-NSSAI value that meets any of the following preset conditions can be called the first S-NSSAI value.
  • Preset condition 1 The S-NSSAI value including the terminal SST and the first SD is called the first S-NSSAI value.
  • the first SD is a pre-configured SD.
  • the pre-configured SD can be pre-defined by the protocol, and the equipment manufacturer can configure the corresponding SD for the factory-built terminal according to the protocol definition.
  • the value of SD pre-configured for the terminal is 0XFFDD.
  • SST includes but is not limited to at least one of eMBB, uRLLC, and mMTC.
  • Preset condition 2 The S-NSSAI value that includes SST and does not include SD can be called the first S-NSSAI value.
  • the first S-NSSAI value defined above is used for the terminal to request available network slices, and can also be used to trigger the network device to feed back the second S-NSSAI value. For example, if the terminal requests a mMTC type service, it can send the first S-NSSAI value carrying the pre-configured SD and SST type of mMTC to the network device.
  • the network device 202 is configured to receive the first S-NSSAI value from the terminal, and send one or more second S-NSSAI values to the terminal according to the first S-NSSAI value.
  • the second S-NSSAI value is used to indicate network slices available to the terminal.
  • the SST of at least one second S-NSSAI value among the one or more second S-NSSAI values is the same as the SST of the first S-NSSAI value.
  • the network device when the S-NSSAI value1 sent by the terminal contains a pre-configured SD, the network device will obtain one or more S-NSSAI values that have the same SST as S-NSSAI value1, and Feed back the one or more S-NSSAI values to the terminal.
  • the network device obtains one or more S-NSSAI values that have the same SST as S-NSSAI value1, and feeds back the one or more S-NSSAI values to the terminal.
  • an embodiment of the present application provides a network slice selection method, which can be applied to a process in which a terminal uses network slices for communication. As shown in Figure 3, the method includes the following steps:
  • the terminal sends the first S-NSSAI value to the network device.
  • the network device receives the first single network slice selection auxiliary information value S-NSSAI value from the terminal.
  • the network device may be the SMF or AMF shown in FIG. 1, or, as technology evolves, the network device may also be other devices capable of managing network slices.
  • the embodiment of this application does not limit the specific form of the network device.
  • the S-NSSAI value that meets the preset condition 1 or the preset condition 2 can be called the first S-NSSAI value. That is, the S-NSSAI value that includes the pre-configured SD or does not include the SD can be called the first S-NSSAI value.
  • the network device sends one or more second S-NSSAI values to the terminal.
  • the terminal receives one or more second S-NSSAI values from the network device.
  • the SST of at least one second S-NSSAI value among the one or more second S-NSSAI values is the same as the SST of the first S-NSSAI value.
  • the network device needs to determine the SST in the first S-NSSAI value to facilitate Determine the type of business (service) requested by the terminal, and then select the second S-NSSAI value that meets the terminal’s business needs based on the terminal’s expected business requirements, that is, the second S-NSSAI value needs to have the same SST as the first S-NSSAI value .
  • the terminal sends an S-NSSAI value containing pre-configured SD and SST type eMBB to the network device, the network device receives and learns that the S-NSSAI value is the first S-NSSAI value, and the network device searches for the SST type as eMBB, and S-NSSAI value available to the terminal. Further, the network device feeds back one or more second S-NSSAI values to the terminal. For example, the network device feeds back three second S-NSSAI values to the terminal, where the SST types of the three second S-NSSAI values are all eMBB (that is, the type of SST expected by the terminal).
  • the network device after the network device receives the S-NSSAI value from the terminal, once it learns that the S-NSSAI value carries the pre-configured SD, indicating that the S-NSSAI value is the first S-NSSAI value, then The network device feeds back the second S-NSSAI value to the terminal. Since the SST of at least one second S-NSSAI value is the same as the SST requested by the terminal, the network slice indicated by the second S-NSSAI value can meet the service requirements of the terminal.
  • the network device After the network device receives the S-NSSAI value from the terminal, once it learns that the S-NSSAI value does not carry SD, that is, the SD value is empty, it will feed back the second S-NSSAI value to the terminal, which can also meet the terminal’s requirements. Business needs.
  • the network device receives the S-NSSAI value from the terminal, if it learns that the S-NSSAI value is not the first S-NSSAI value, that is, the S-NSSAI value does not meet the above preset condition 1 and does not meet the above prediction. Assuming condition 2, the network device performs subsequent actions according to the prior art, that is, it determines whether the SD specified in the S-NSSAI value of the terminal is consistent with the SD supported by the DN that the terminal wants to access. If they are consistent, the network device delivers the corresponding S-NSSAI value to the terminal, and the corresponding S-NSSAI value carries the SD specified by the terminal. If the SD specified in the S-NSSAI value of the terminal is inconsistent with the SD supported by the DN that the terminal wants to access, the network device does not deliver the S-NSSAI value to the terminal, and the terminal service fails.
  • the network device receives the first S-NSSAI value from the terminal, and sends one or more second S-NSSAI values to the terminal.
  • the first S-NSSAI value has two formats.
  • the first S-NSSAI value includes the SST and the first slice distinguishing identifier SD.
  • the first S-NSSAI value includes SST and does not include SD.
  • the SST of at least one second S-NSSAI value among the one or more second S-NSSAI values is the same as the SST of the first S-NSSAI value.
  • This embodiment of the application defines the first S-NSSAI value used to request available network slices.
  • the terminal when the terminal needs to use network slicing, it only needs to send the first S-NSSAI value to the network device. In this way, the network device can feed back the second S-NSSAI value to the terminal after receiving the first S-NSSAI value. Since there is at least one second S-NSSAI value whose SST is the same as the SST requested by the terminal, the service requirements of the terminal can be met, and the success rate of the terminal in obtaining network services can be improved.
  • the network device determines that the first S-NSSAI value is received, on the one hand, it may not match the pre-configured SD value of the first S-NSSAI value with the SD value supported by the network side. , To avoid the problem of service failure when the network side does not support the pre-configured SD value.
  • the network device matches the requested SST in the first S-NSSAI value with the SST supported by the network side.
  • the network device can indicate the same SST to the terminal, To meet the business needs of the terminal.
  • the network device is the AMF shown in FIG. 1 as an example to illustrate the network slice selection method of the embodiment of the present application.
  • the network slice selection method can be applied to the registration process of the terminal. Yes, the registration process includes the following S501 and S502:
  • S501 The terminal sends a registration request message (Registration Request) to the AMF.
  • the AMF receives the registration request message from the terminal.
  • the registration request message includes the requested S-NSSAI value (ie Requested S-NSSAI value), the requested S-NSSAI value includes the first S-NSSAI value, and the first S-NSSAI value includes the pre-configured SD, such as pre-configured SD. Configure SD as 0XFFDD.
  • the registration request message includes the S-NSSAI value (Requested S-NSSAI value) requested by the terminal, and the Requested S-NSSAI value includes the above-mentioned first Requested S-NSSAI value and the third S-NSSAI value.
  • the third S-NSSAI value includes SST and second SD, and the second SD is different from the first SD, that is, the second SD is not a pre-configured SD.
  • the pre-configured SD is 0XFFDD
  • the second SD may be another SD except 0XFFDD. That is to say, unlike the first S-NSSAI value, the third S-NSSAI value contains a non-preconfigured SD value. Therefore, the third S-NSSAI value cannot trigger the network device to feed back the second S-NSSAI value.
  • the terminal when it initiates the registration request message, if it does not know the prior information of the registered network in advance, it can send the S-NSSAI value that satisfies the conditions to the AMF, that is, send the first S-NSSAI value.
  • the SD of one S-NSSAI value is a pre-configured SD, or the first S-NSSAI value does not carry SD. So that the network device feeds back slice information that can meet the service requirements of the terminal to the terminal according to the first S-NSSAI value.
  • the prior information of the network includes, but is not limited to, any one or more of the following: network slices supported by the network side, and user subscription information stored on the network side, for example, which network slices the user has signed up for.
  • the network device determines one or more second S-NSSAI values.
  • the network device obtains at least one second S-NSSAI value according to any one or more of the following information: the first S-NSSAI value, network slice priority, or user subscription information.
  • the priority of network slicing can be preset.
  • the priority of different network slices is determined according to at least one index such as bandwidth, rate, delay, and reliability of the network slice.
  • the priority of the network slicing can also be determined according to other indicators, which is not limited in the embodiment of the present application.
  • the user subscription information is used to indicate the network slice of the user subscription.
  • the user has subscribed to eMBB type and uRLLC type network slices.
  • eMBB type network slice 1 has a higher priority
  • eMBB type network slice 2 Has a lower priority.
  • the network device receives the first S-NSSAI value, and the SST of the first S-NSSAI value is eMBB, and the network device instructs the terminal to use the network slice of the eMBB type that has been contracted. Specifically, because the priority of network slice 1 is higher , The network device instructs the terminal to use network slice 1, so that the terminal accesses network slice 1 to obtain network services.
  • the network device can also determine the network slices that can be used by the terminal according to other factors, which is not limited in this embodiment of the application. For example, according to business frequency decision, specifically, for a single user with occasional data service requirements, dynamic scheduling of small network slices is performed. For a single user with fixed service requirements (such as voice) and a relatively stable channel state, semi-static scheduling of small network slices is performed. For multiple users with the same service requirements, semi-static resource scheduling is performed on a large network slice to meet the overall service requirements of multiple users.
  • business frequency decision specifically, for a single user with occasional data service requirements, dynamic scheduling of small network slices is performed. For a single user with fixed service requirements (such as voice) and a relatively stable channel state, semi-static scheduling of small network slices is performed. For multiple users with the same service requirements, semi-static resource scheduling is performed on a large network slice to meet the overall service requirements of multiple users.
  • a small network slice generally refers to a network slice with less allocated resources, for example, a network slice with a smaller bandwidth, or a network slice with a shorter time slot.
  • a network slice with a smaller bandwidth for example, a network slice with a smaller bandwidth, or a network slice with a shorter time slot.
  • dynamic scheduling generally refers to a real-time, dynamic allocation of network slices, that is, a resource scheduling method that allocates resources on demand.
  • the semi-persistent scheduling mentioned in the embodiment of the present application usually refers to the fixed use of a certain resource within a certain period of time, and it does not need to be scheduled every scheduling period.
  • the network device can select one or more second S-NSSAI values for the terminal according to a certain strategy, such as the network slicing priority listed above, subscription information, etc. (the SST is the same as the SST expected by the terminal, That is, it is the same as the SST of the first S-NSSAI value) to match the service requirements of the terminal.
  • a certain strategy such as the network slicing priority listed above, subscription information, etc.
  • the AMF sends a registration acceptance message (Registration Accept) to the terminal.
  • the terminal receives the registration acceptance message from the AMF.
  • the registration acceptance message includes the allowed S-NSSAI value (Allowed S-NSSAI value), or the registration acceptance message includes the configured S-NSSAI value (Configured S-NSSAI value).
  • the Allowed S-NSSAI value includes one or more second S-NSSAI values.
  • the SST of at least one second S-NSSAI value is the same as the SST of the first S-NSSAI value, that is, the same as the SST expected by the terminal, so as to meet the service requirements of the terminal.
  • the second S-NSSAI value further includes information about the default network slice in the network slice that the user has subscribed to.
  • the network device can send multiple second S-NSSAI values to the terminal, where at least one of the multiple second S-NSSAI values has the SST of the second S-NSSAI value and the SST expected by the terminal The same, used to meet the business needs of the terminal.
  • the multiple second S-NSSAI values there may also be a second S-NSSAI value for indicating default network slice information.
  • the network device sends two second S-NSSAI values to the terminal, the SST of the first second S-NSSAI value is the same as the SST expected by the terminal, and the second second S-NSSAI value includes the SST of the default network slice,
  • the SD of the default network slice is used to indicate the information of the default network slice.
  • the terminal can learn the information of the default network slice, and subsequently, when the terminal initiates a registration request, it can use the default network slice as a reference.
  • the network device feeds back to the terminal all S-NSSAI values whose SST is the SST expected by the terminal.
  • the S-NSSAI values allowed to be registered include S-NSSAI value1 (SST is eMBB), S-NSSAI value2 (SST is eMBB), S-NSSAI value3 (SST is eMBB), S-NSSAI value4 (SST is uRLLC), And, the SST expected by the terminal is of the eMBB type.
  • the network device When the network device receives the S-NSSAI value that meets the conditions, that is, when it determines that the first S-NSSAI value is received, it feeds back the S-NSSAI value1 to S-NSSAI value3 that the SST meets to the terminal to meet the service requirements of the terminal.
  • the terminal sends the first S-NSSAI value for requesting the desired service to the AMF.
  • the AMF feeds back the second S-NSSAI value to the terminal, which is the same as the default slice information fed back to the terminal by the network equipment in the prior art
  • the SST of the second S-NSSAI value fed back by the network device is the same as the SST expected by the terminal. Therefore, it can meet the service requirements of the terminal and improve the success of the terminal in obtaining network services. rate.
  • the network slice selection method provided in the embodiments of the present application may also be applied in the session establishment process.
  • the session establishment process of the embodiment of the present application is described. Specifically, referring to FIG. 5, the session establishment includes the following steps S601 and S603:
  • the terminal sends a session establishment request message to the SMF.
  • the SMF receives the session establishment request message from the terminal.
  • the session establishment request message includes the first S-NSSAI value, that is, the session establishment request message carries the S-NSSAI value for performing the desired service.
  • the first S-NSSAI value please refer to the above description, which will not be repeated here.
  • the terminal sends a session establishment request message, more than one slice is required, and the terminal does not have prior information about the network, and cannot determine which slice is used by the current DN. Then, the terminal sends the S-NSSAI value that satisfies the conditions in the session establishment request message, that is, carries the first S-NSSAI value, so that the network device can feed back to the terminal slice information that can meet the terminal service requirements according to the first S-NSSAI value .
  • the network device determines the second S-NSSAI value in the session establishment process.
  • the network device is based on the first S-NSSAI value, network slice priority, data network name (DNN), and user subscription information in the session establishment process.
  • One of these types of information or Multiple obtain at least one second S-NSSAI value.
  • different network slices supported by different DNs can also be combined to determine the second S-NSSAI value.
  • S603 The SMF sends a session establishment acceptance message to the terminal.
  • the terminal receives the session establishment acceptance message from the SMF.
  • the session establishment acceptance message includes and only includes one second S-NSSAI value.
  • the SST of the second S-NSSAI value is the same as the SST expected by the terminal.
  • the terminal During the session establishment process, if the terminal does not know the prior information of the network in advance, it can send the first S-NSSAI value to the SMF. In this way, the network device can determine that the terminal is available after receiving the first S-NSSAI value The second S-NSSAI value is fed back to the terminal, and the SST of the second S-NSSAI value is the same as the SST expected by the terminal, which can meet the service requirements of the terminal.
  • the S-NSSAI value it sends does not carry SD, or it carries pre-configured SD, and the terminal does not make a decision on which network slice to use. Instead, the network device makes a decision on which network slice to use.
  • the network device After the network device receives the S-NSSAI value from the terminal, once it learns that the S-NSSAI value carries a pre-configured SD, or once it learns that the S-NSSAI value does not carry SD, the network device selects the available value for the terminal Network slicing. In this way, on the one hand, since the network device usually knows which network slices are available and which network slices are not available, the network slice selected by the network device can often meet the service requirements of the terminal. On the other hand, when the terminal wants to perform the expected service, it can usually obtain the expected network slice information through a session establishment request message, and then obtain the expected network service, which can reduce the signaling overhead.
  • the terminal service may fail, or, If the terminal wants to successfully perform the service, it may need to try to send multiple session establishment request messages, and the signaling overhead is relatively large.
  • the terminal when the terminal wants to establish an eMBB-type PDU Session, it sends a session establishment request message to the network device.
  • the session request message includes the first S-NSSAI value, the first The S-NSSAI value includes the pre-configured SD and the SST expected by the terminal, or the first S-NSSAI value does not include the SD.
  • the network device after the network device receives the first S-NSSAI value that does not include SD or includes pre-configured SD, it can select a network slice (not specified by the terminal) that meets service requirements for the terminal, and feed back the second S-NSAI value to the terminal.
  • NSSAI value, the SST of the second S-NSSAI value is the same as the expected SST of the terminal. It can be seen that after the network device receives the first S-NSSAI value, the network device may not match the SD in the first S-NSSAI value, but match the SST in the first S-NSSAI value. In this way, it can be guaranteed
  • the SST of the network slice selected for the terminal is the SST expected by the terminal, so as to meet the service requirements of the terminal.
  • network devices and terminals are taken as examples for description. It can be understood that the methods and functions implemented by network devices in the foregoing method embodiments can also be implemented by chips that can be used in network devices. The implemented methods and functions can also be implemented by chips that can be used in terminals.
  • network devices and terminals include hardware structures and/or software modules corresponding to the respective functions.
  • the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Those skilled in the art may use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the technical solutions of the embodiments of the present application.
  • the embodiment of the present application may divide the network equipment and the terminal into functional units according to the above method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • Fig. 6 shows a schematic block diagram of a network slice selection apparatus provided in an embodiment of the present application.
  • the network slice selection apparatus 1200 may exist in the form of software, or may be hardware, for example, may be a chip that can be used in a hardware device.
  • the device 1200 includes: a processing unit 1202 and a communication unit 1203.
  • the processing unit 1202 may be used for the supporting apparatus 1200 to determine the second S-NSSAI value, and/or for other processes of the solution described herein.
  • the communication unit 1203 is used to support communication between the apparatus 1200 and other network elements (for example, terminals), for example, to perform S401 and S402 shown in FIG. 3, and/or other steps of the solution described herein.
  • the processing unit 1202 may be used for the supporting apparatus 1200 to determine the first S-NSSAI value, and/or for other processes in the solution described herein.
  • the communication unit 1203 is used to support communication between the apparatus 1200 and other network elements (such as network equipment), for example, to perform S401 and S402 shown in FIG. 3, S501 and S502 shown in FIG. 4, and/or as described herein Other steps of the program.
  • the network slice selection apparatus 1200 may further include a storage unit 1201 for storing the program code and data of the apparatus 1200, and the data may include but is not limited to raw data or intermediate data.
  • the processing unit 1202 may be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processing (Digital Signal Processing, DSP), application-specific integration Circuit (Application Specific Integrated Circuit, ASIC), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination for realizing computing functions, for example, including a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the communication unit 1203 may be a transceiver, a transceiving circuit, a communication interface, or the like.
  • the storage unit 1201 may be a memory.
  • the processing unit 1202 is a processor
  • the communication unit 1203 is a communication interface
  • the storage unit 1201 is a memory
  • the structure of the network slice selection apparatus involved in the embodiment of the present application may be as shown in FIG. 7.
  • FIG. 7 shows a simplified schematic diagram of a possible design structure of the network slice selection device involved in an embodiment of the present application.
  • the device 1500 includes a processor 1502, a communication interface 1503, and a memory 1501.
  • the apparatus 1500 may further include a bus 1504.
  • the communication interface 1503, the processor 1502, and the memory 1501 may be connected to each other through a bus 1504.
  • the bus 1504 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus 1504 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 7, but it does not mean that there is only one bus or one type of bus.
  • a person of ordinary skill in the art can understand that: in the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (for example, coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (for example, a solid state disk (Solid State Disk, SSD)) )Wait.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a digital video disc (Digital Video Disc, DVD)
  • a semiconductor medium for example, a solid state disk (Solid State Disk, SSD)
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network devices (for example, Terminal). Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each functional unit may exist independently, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

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Abstract

La présente invention se rapporte au domaine technique des communications, et concerne un appareil et un procédé de sélection de tranche de réseau, qui sont utilisés pour fournir un service de tranche de réseau demandé à un terminal de façon à remplir des exigences de service du terminal. Le procédé comprend les étapes suivantes : un dispositif de réseau reçoit une première valeur S-NSSAI d'un terminal, et envoie au moins une de secondes valeurs S-NSSAI au terminal. La première valeur S-NSSAI comprend un SST et un premier SD; ou, la première valeur S-NSSAI comprend un SST et ne contient pas de SD; et le SST d'au moins une seconde valeur S-NSSAI parmi lesdites secondes valeurs S-NSSAI est le même que le SST de la première valeur S-NSSAI. Le procédé décrit est appliqué dans le processus de sélection d'une tranche de réseau pour un terminal.
PCT/CN2019/083722 2019-04-22 2019-04-22 Appareil et procédé de sélection de tranche de réseau WO2020215186A1 (fr)

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PCT/CN2019/083722 WO2020215186A1 (fr) 2019-04-22 2019-04-22 Appareil et procédé de sélection de tranche de réseau

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PCT/CN2019/083722 WO2020215186A1 (fr) 2019-04-22 2019-04-22 Appareil et procédé de sélection de tranche de réseau

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180227873A1 (en) * 2017-02-06 2018-08-09 Huawei Technologies Co., Ltd. Network registration and network slice selection system and method
WO2018175260A1 (fr) * 2017-03-20 2018-09-27 Qualcomm Incorporated Configuration et sélection de service de réseau à l'aide de tranches de réseau
CN108702723A (zh) * 2016-11-27 2018-10-23 Lg 电子株式会社 无线通信系统中的注销方法及其装置
CN109151906A (zh) * 2017-06-16 2019-01-04 华为技术有限公司 通信方法、网络设备、终端设备和系统
EP3445072A1 (fr) * 2017-08-18 2019-02-20 Ntt Docomo, Inc. Réseau de communication radio mobile et procédé pour associer un dispositif de terminal radio mobile à une instance de tranche de réseau d'un réseau de communication radio mobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108702723A (zh) * 2016-11-27 2018-10-23 Lg 电子株式会社 无线通信系统中的注销方法及其装置
US20180227873A1 (en) * 2017-02-06 2018-08-09 Huawei Technologies Co., Ltd. Network registration and network slice selection system and method
WO2018175260A1 (fr) * 2017-03-20 2018-09-27 Qualcomm Incorporated Configuration et sélection de service de réseau à l'aide de tranches de réseau
CN109151906A (zh) * 2017-06-16 2019-01-04 华为技术有限公司 通信方法、网络设备、终端设备和系统
EP3445072A1 (fr) * 2017-08-18 2019-02-20 Ntt Docomo, Inc. Réseau de communication radio mobile et procédé pour associer un dispositif de terminal radio mobile à une instance de tranche de réseau d'un réseau de communication radio mobile

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