WO2022063051A1 - Procédé et appareil de sélection de tranche de réseau, dispositif informatique et support de stockage - Google Patents

Procédé et appareil de sélection de tranche de réseau, dispositif informatique et support de stockage Download PDF

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Publication number
WO2022063051A1
WO2022063051A1 PCT/CN2021/119010 CN2021119010W WO2022063051A1 WO 2022063051 A1 WO2022063051 A1 WO 2022063051A1 CN 2021119010 W CN2021119010 W CN 2021119010W WO 2022063051 A1 WO2022063051 A1 WO 2022063051A1
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WIPO (PCT)
Prior art keywords
information
location
slice
network slice
service
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PCT/CN2021/119010
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English (en)
Chinese (zh)
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朱广亮
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中兴通讯股份有限公司
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Publication of WO2022063051A1 publication Critical patent/WO2022063051A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • 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
    • 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
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a network slice selection method, a network slice selection apparatus, a computer device, and a storage medium.
  • 5GC 5G core network
  • NSSF Network Slice Selection Function, network slice selection functional entity
  • network element selects available network slices (Network Slice) for users through the Nnssf_NSSelection (Network Slice Selection) service.
  • the 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) specification only defines the network slice selection method when the user is not roaming or roaming across a PLMN (Public Land Mobile Network, Public Land Mobile Network).
  • Network slicing is usually deployed according to regional planning. For example, a province is divided into a region. The same operator and the same PLMN have different network slicing for each region in the same PLMN. When a user roams across regions, the NSSF will not be able to select the correct network slice available for the user in the roaming location.
  • an embodiment of the present disclosure provides a network slice selection method, including:
  • the slice information of the location includes at least the area information of the location, and the slice information of the home location at least includes the information used to indicate the quality of service of the home location. information;
  • an embodiment of the present disclosure further provides a network slice selection device, including: a receiving module, an obtaining module, a processing module, and a sending module,
  • the receiving module is configured to receive a slice selection request sent by the core access and mobility management function entity AMF;
  • the obtaining module is configured to obtain the slice information of the location and the slice information of the home place carried in the slice selection request, where the slice information of the location at least includes the area information of the location, and the slice information of the home place at least includes Information indicating the quality of service at home;
  • the processing module is configured to determine the network slice of the location according to the area information of the location, the information used to represent the quality of service of the home location and the preset quality of service information, and the mapping relationship between the area information and the network slice;
  • the sending module is configured to send the local network slice to the AMF.
  • an embodiment of the present disclosure also provides a computer device, including:
  • the one or more programs when executed by the one or more processors, cause the one or more processors to implement the aforementioned network slice selection method.
  • an embodiment of the present disclosure further provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the foregoing network slice selection method.
  • FIG. 1 is a schematic diagram of a system architecture provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a network slice selection process according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of a network slice selection process according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of an S-NSSAI format provided by an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a network slice selection apparatus provided by an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a computer device according to an embodiment of the present disclosure.
  • Embodiments described herein may be described with reference to plan and/or cross-sectional views with the aid of idealized schematic representations of the present disclosure. Accordingly, example illustrations may be modified according to manufacturing techniques and/or tolerances. Therefore, the embodiments are not limited to the embodiments shown in the drawings, but include modifications of configurations formed based on manufacturing processes. Accordingly, the regions illustrated in the figures are of schematic nature and the shapes of the regions illustrated in the figures are illustrative of the specific shapes of the regions of the elements, and are not limiting.
  • An embodiment of the present disclosure provides a method for selecting a network slice.
  • the method is applied to a network system as shown in FIG. 1 .
  • the system includes an AMF (Core Access and Mobility Management Function, a core access and mobility management function entity) and NSSF and AMF are 5GC standard network elements, providing standard services such as user access; NSSF is 5GC standard network elements, providing standard services such as slice selection and slice availability management.
  • AMF Core Access and Mobility Management Function, a core access and mobility management function entity
  • NSSF and AMF are 5GC standard network elements, providing standard services such as user access
  • NSSF is 5GC standard network elements, providing standard services such as slice selection and slice availability management.
  • the network slice selection method provided by the embodiment of the present disclosure includes the following steps S11 to S14.
  • step S11 a slice selection request sent by the AMF is received.
  • the base station of the current area sends a notification message to the AMF of the current area, and correspondingly, the AMF sends a slice selection request to the NSSF to request the NSSF to provide slices of the current area.
  • the same PLMN is divided into regions according to provinces, and one region corresponds to one province.
  • step S12 obtain the slice information of the location and the slice information of the home place carried in the slice selection request, the slice information of the location at least includes the area information of the location, and the slice information of the home place at least includes the information used to indicate the quality of service of the home place .
  • the slice information of the location includes the area information of the location, and may also include information used to indicate the service quality of the location.
  • the information used to represent the quality of service includes at least slice/service type, and the area information may be an area identifier.
  • the attribution refers to the registration place of the user's communication number.
  • step S13 the local network slice is determined according to the local area information, the information used to represent the home service quality and the preset service quality information, the mapping relationship between the area information and the network slice.
  • the NSSF is pre-configured with a mapping relationship between QoS information, area information and network slices.
  • the NSSF queries the mapping relationship according to the area information of the location and the information used to represent the service quality of the home location, and obtains the network slice of the location.
  • step S14 the local network slice is sent to the AMF.
  • the NSSF returns the determined network slice to the AMF.
  • the method for selecting a network slice includes: receiving a slice selection request sent by an AMF, and acquiring slice information of the location and slice information of the home location carried in the request, where the slice information of the location includes at least the area information of the location, and the slice information of the home location.
  • the information includes at least information used to indicate the quality of service at the home location; the network at the location is determined according to the area information of the location, the information used to indicate the quality of service at the home location, and the mapping relationship between the preset quality of service information, area information and network slices.
  • Slicing sending the local network slice to the AMF; by defining the area information and the QoS information in the slice information, and configuring the mapping relationship between the QoS information, the area information and the network slice locally in the NSSF,
  • the user selects the network slice where the user is roaming, so as to realize automatic switching of network slices in each region within the same PLMN of the same operator.
  • the slice information of the home location may also include the area information of the home location, that is, the slice selection request sent by the AMF to the NSSF not only carries the area information of the location, but also can carry the area information of the home location.
  • the network slice That is, step S13), the following steps S21 and S22 may be included.
  • step S21 if the area information of the home location is different from the area information of the location, step S13 is performed, and the area information of the home location is the same as the area information of the location, and step S22 is performed.
  • the NSSF based on the area information of the location , The mapping relationship between the information used to represent the quality of service at the home location, the preset quality of service information, the area information and the network slice determines the network slice at the location.
  • the NSSF can send the network slice of the home location to the AMF.
  • step S22 the home network slice is sent to the AMF.
  • S-NSSAI Single Network Slice Selection Assistance Information, single network slice selection assistance information
  • S-NSSAI Single Network Slice Selection Assistance Information, single network slice selection assistance information
  • the format of S-NSSAI is defined in the 3GPP TS 23.003 standard.
  • S-NSSAI may include SST (Slice/Service type, slice/service type) field and SD (Slice Differentiator, slice distinguishing identifier) field.
  • the bit length of the SST field is 8 bits (bits), and the value ranges from 0 to 255. 0 to 127 is defined by the standard, and 128 to 255 is defined by the operator.
  • SD is an optional field with a bit length of 24 bits and a value range of 0 to 16777215 (000000 to FFFFFF).
  • the total bit length of S-NSSAI is 32 bits when the SD field is included, and 8 bits when the SD field is not included.
  • 3GPP TS.23.501 has defined 4 SST types, as shown in Table 1.
  • the SST field can represent the quality of service, that is, different slice/service types have different quality of service.
  • the SD field is a supplement to the SST field to distinguish multiple network slices of the same SST.
  • 0 to 16777214 (000000 to FFFFFE) is defined by the operator; 16777215 (FFFFFF) is reserved, indicating that the S-NSSAI only contains the SST field and does not contain the SD field.
  • FFFFFF 16777215
  • the value of the SD field is FFFFFF, and the actual effective bit length is only 8 bits of the SST; when the S-NSSAI contains both the SST field and the SD field, the value of the SD field is 000000 to FFFFFE, the total bit length of S-NSSAI is 32 bits.
  • S-NSSAI can be divided into two types: standard value and non-standard value.
  • the standard value S-NSSAI only contains the SST field but not the SD field, and the value of the SST field belongs to the SST defined by the standard (see Table 1) ;
  • S-NSSAI with non-standard values includes two types: S-NSSAI containing both the SST field and SD field, and the S-NSSAI containing only the SST field but not the SD field, and the value of the SST field does not belong to the SST defined by the standard (as in Table 1).
  • the SD field is used to identify the area information of the network slice, so as to solve the problem of network slice selection during cross-area roaming in the PLMN.
  • slice information (ie, S-NSSAI) includes an SST field and an SD field.
  • the SD field includes an area identification field (excluding the service information field) for indicating area information, and in this case, the SST field is used to indicate the quality of service.
  • the SST field is 8 bits and the SD field is 24 bits.
  • the SD field may also include a service information field (ie, the SD field includes both a region identification field and a service information field), in which case, the SST field and the service information field are jointly used to represent the quality of service.
  • the SD field may also include a manufacturer identification field.
  • the area identification field in the SD field is 8 bits long, the service information field is 12 bits long, and the manufacturer identification field is 4 bits long.
  • the area information represented by the area identifier field is the attribution area information of the network slice. Taking the division of provinces in China as an example, the area identifiers of each area are shown in Table 2.
  • Region ID (binary) National 0000 0000 Beijing 0000 0001 Tianjin 0000 0010 Hebei 0000 0011 Shanxi 0000 0100 Inner Mongolia 0000 0101 Liaoning 0000 0110 Jilin 0000 0111 Heilongjiang 0000 1000 Shanghai 0000 1001 Jiangsu 0000 1010 Zhejiang 0000 1011 Anhui 0000 1100 Fujian 0000 1101
  • Network slice 1 in Jiangsu and network slice 3 in Anhui are network slices with the same quality of service, and
  • network slice 2 in Jiangsu and network slice 4 in Anhui are network slices with the same quality of service.
  • mapping relationship between QoS information, area information and network slices can be shown in Table 3.
  • the AMF in Anhui sends a slice selection request to the NSSF, which carries slice information of Anhui (including the area ID of Anhui 0000 1100) and slice information of Jiangsu ( Including the value of the SST corresponding to the quality of service information eMBB 0000 0001)
  • eMBB slice 1 when a Jiangsu user who subscribes to an eMBB slice (ie, network slice 1) roams to Anhui, the NSSF selects network slice 3 that is available in Anhui and has the same quality of service (ie, eMBB) as network slice 1, as the The user provides services, in this case, network slice 1 and network slice 3 are the corresponding mapping slices.
  • the embodiments of the present disclosure implement the function of slice selection when a user roams across regions within the same PLMN by customizing the meaning of the network slice information (S-NSSAI) field and cooperating with the slice mapping relationship locally configured by the NSSF.
  • S-NSSAI network slice information
  • an embodiment of the present disclosure further provides a network slice selection apparatus, and the network slice selection apparatus may be an NSSF.
  • the network slice selection apparatus includes a receiving module 101, an obtaining module 102, The processing module 103 and the sending module 104.
  • the receiving module 101 is configured to receive a slice selection request sent by the core access and mobility management function entity AMF.
  • the obtaining module 102 is configured to obtain the slice information of the location and the slice information of the home place carried in the slice selection request, where the slice information of the location at least includes the area information of the location, and the slice information of the home place at least includes the slice information for indicating the location. Information on the quality of service at home.
  • the processing module 103 is configured to determine the network slice of the location according to the area information of the location, the information used to represent the quality of service of the home location and the preset quality of service information, the mapping relationship between the area information and the network slice.
  • the sending module 104 is configured to send the network slice of the location to the AMF.
  • the slice information of the home place further includes the area information of the home place
  • the processing module 103 is configured to, when the area information of the home place is different from the area information of the home place, according to the area information of the home place,
  • the local network slice is determined by representing the mapping relationship between the home service quality and information and preset service quality information, area information and network slice.
  • the sending module 104 is further configured to send the network slice of the home location to the AMF when the processing module 103 determines that the area information of the home location is the same as the area information of the location.
  • the slice information includes a slice/service type SST field and a slice distinction identification SD field
  • the SD field includes an area identification field used to indicate the area information
  • the SST field is used to indicate the quality of service .
  • the SD field further includes a service information field, and the SST field and the service information field are used to indicate service quality.
  • An embodiment of the present disclosure also provides a computer device.
  • the computer device includes: one or more processors and a storage device; one or more programs are stored on the storage device, and when the above one or more programs are stored When the program is executed by the above-mentioned one or more processors, the above-mentioned one or more processors implement the network slice selection method provided by the foregoing embodiments.
  • Embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the network slice selection method provided by the foregoing embodiments.
  • Computer storage media includes both volatile and nonvolatile implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules or other data flexible, removable and non-removable media.
  • Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or may Any other medium used to store desired information and which can be accessed by a computer.
  • communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and can include any information delivery media, as is well known to those of ordinary skill in the art .
  • Example embodiments have been disclosed herein, and although specific terms are employed, they are used and should only be construed in a general descriptive sense and not for purposes of limitation. In some instances, it will be apparent to those skilled in the art that features, characteristics and/or elements described in connection with a particular embodiment may be used alone or in combination with features, characteristics described in connection with other embodiments unless expressly stated otherwise and/or components used in combination. Accordingly, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the present disclosure as set forth in the appended claims.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de sélection de tranche de réseau consistant à : recevoir une demande de sélection de tranche envoyée par une AMF ; obtenir des informations de tranche d'un emplacement actuel et des informations de tranche d'un emplacement de rattachement qui sont transportées par la demande, les informations de tranche de l'emplacement actuel comprenant au moins des informations de région de l'emplacement actuel et les informations de tranche de l'emplacement de rattachement comprenant au moins des informations indiquant la qualité de service de l'emplacement de rattachement ; en fonction des informations de région de l'emplacement actuel, des informations indiquant la qualité de service de l'emplacement de rattachement et d'une relation de correspondance, déterminer une tranche de réseau pour l'emplacement actuel, ladite relation de correspondance étant une relation de correspondance entre les informations de qualité de service, les informations de région et la tranche de réseau ; et envoyer la tranche de réseau de l'emplacement actuel à l'AMF. La présente divulgation concerne également un appareil de sélection de tranche de réseau, un dispositif électronique et un support de stockage lisible par ordinateur.
PCT/CN2021/119010 2020-09-22 2021-09-17 Procédé et appareil de sélection de tranche de réseau, dispositif informatique et support de stockage WO2022063051A1 (fr)

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CN202011000685.1A CN114301787A (zh) 2020-09-22 2020-09-22 网络切片选择方法、装置、计算机设备和可读介质
CN202011000685.1 2020-09-22

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Citations (4)

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Publication number Priority date Publication date Assignee Title
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