WO2023123899A1 - 网络切片接入方法、装置、系统和存储介质 - Google Patents

网络切片接入方法、装置、系统和存储介质 Download PDF

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Publication number
WO2023123899A1
WO2023123899A1 PCT/CN2022/099703 CN2022099703W WO2023123899A1 WO 2023123899 A1 WO2023123899 A1 WO 2023123899A1 CN 2022099703 W CN2022099703 W CN 2022099703W WO 2023123899 A1 WO2023123899 A1 WO 2023123899A1
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network
slice
information
data
routing
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PCT/CN2022/099703
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English (en)
French (fr)
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王斌
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西安广和通无线软件有限公司
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Publication of WO2023123899A1 publication Critical patent/WO2023123899A1/zh

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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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery

Definitions

  • the present application relates to the technical field of communications, and in particular to a network slice access method, device, system and storage medium.
  • Network Slice Network Slice
  • Modem Modem
  • sliced network applications Some manufacturers have adapted Network Slice (Network Slice) solutions for terminal equipment, involving Modem (modem), application operating systems, and sliced network applications; however, traditional solutions require modification of applications and operating systems, for example, adding slice management components, Receive network slicing configuration, monitor application connection requests, support multi-way dial-up and configure routing, etc.
  • the traditional solution has the problems of complex solution and heavy workload.
  • a network slicing access method, device, system and storage medium without system modification are provided.
  • the present application provides a network slicing access method, which is applied to a communication module; the method includes:
  • Dialing is performed according to the routing selection information in the slice feature information and slice policy information, and a data link corresponding to the network slice is established facing the network; in the case of successful dialing, routing and forwarding rules are configured based on the business information in the slice policy information; among them,
  • the slice feature information is obtained during the registration process of the communication module to the network triggered by the dial-up of the upper computer connected to the communication module;
  • Receive the uplink data from the upper computer forward the uplink data to the data link according to the routing forwarding rules for transmission to the network; receive the downlink data from the network through the data link, and transmit the downlink data to the upper computer.
  • the data link includes each network interface corresponding to each network slice respectively;
  • the slice feature information includes permission network slice selection auxiliary information;
  • the method also includes:
  • the network registration request is used to instruct the network to feed back permitted network slice selection auxiliary information; wherein, the network registration request includes a list of network slices requested by the communication module; the permitted network slice selection auxiliary information includes a list of corresponding network slices Single network slice selection assistance information for allowed network slices in .
  • the network interface is a wide area network WAN port;
  • the uplink data includes the IP data packet sent by the host computer using the private address assigned by the communication module;
  • the steps of forwarding the uplink data to the data link for transmission to the network according to the routing and forwarding rules include:
  • the IP data packet forwards the IP data packet to the corresponding network interface, so as to send the IP data packet after network address translation to the network;
  • the steps of receiving downlink data from the network through the data link and transmitting the downlink data to the host computer include:
  • the slicing policy information includes user equipment routing policy rules issued by the network based on user equipment policy management; the routing information includes a routing descriptor;
  • the steps of dialing according to the routing selection information in the slice feature information and the slice policy information, and establishing a data link corresponding to the network slice include:
  • the key parameters include any one or any combination of the following parameters: single network slice selection auxiliary information, session service continuity mode , session type and data network name;
  • the slicing policy information includes user equipment routing policy rules issued by the network based on user equipment policy management;
  • the service information includes a service descriptor;
  • the steps of configuring routing and forwarding rules based on the service information in the slicing policy information include:
  • the destination address includes the IP address and the IP triplet in the service descriptor; the IP address is obtained by analyzing the fully qualified domain name in the service descriptor through the domain name system.
  • the method is applied to a communication module including a slice management component; the network slice includes network slices based on IP triples and network slices based on fully qualified domain names.
  • the present application also provides a network slicing access device, which is applied to a communication module; the device includes:
  • An information receiving module configured to receive slicing policy information sent by the network
  • the slice access module is used for dialing according to slice feature information and routing selection information in slice policy information, and establishing a data link corresponding to the network slice for the network; Configure routing and forwarding rules; wherein, the slicing feature information is obtained during the registration of the communication module to the network triggered by the dial-up of the host computer connected to the communication module;
  • the data transmission module is used to receive the uplink data from the host computer, forward the uplink data to the data link according to the routing forwarding rules for transmission to the network; receive the downlink data from the network through the data link, and transmit the downlink data to the host computer.
  • the data link includes each network interface corresponding to each network slice respectively;
  • the slice feature information includes permission network slice selection auxiliary information;
  • the device also includes:
  • the registration request module is used to configure and output a network registration request; the network registration request is used to instruct the network to feed back the auxiliary information of permitted network slice selection; wherein, the network registration request includes a list of network slices requested by the communication module; the permitted network slice selected auxiliary information includes Single network slice selection auxiliary information for corresponding network slices allowed in the network slice list.
  • the network interface is a wide area network WAN port;
  • the uplink data includes the IP data packets sent by the host computer using the private address assigned by the communication module;
  • the data transmission module includes:
  • the uplink transmission module is used for forwarding the IP data packet to the corresponding network interface according to the address and routing forwarding rules of the IP data packet, so as to send the IP data packet after the network address translation to the network;
  • the downlink transmission module is used to receive downlink data through the network interface, and send the downlink data after network address translation to the host computer.
  • the slicing policy information includes user equipment routing policy rules issued by the network based on user equipment policy management; the routing information includes a routing descriptor; the slicing access module includes:
  • the interface establishment module is used to match the routing descriptor according to the slice feature information to trigger dialing, confirm the key parameters used to establish the data link, and determine the initiation of the protocol data unit session, and send the key parameters to the network;
  • the key parameters include the following parameters Any one or any combination of: single network slice selection assistance information, session service continuity mode, session type, and data network name.
  • the slicing policy information includes user equipment routing policy rules issued by the network based on user equipment policy management;
  • the service information includes a service descriptor;
  • the slice access module includes:
  • the rule configuration module is used to configure routing and forwarding rules according to the port number in the destination address and the service descriptor; the destination address includes the IP triplet in the IP address and the service descriptor; the IP address is the fully qualified domain name in the service descriptor domain name system analysis.
  • the device is applied to a communication module including a slice management component; the network slice includes network slices based on IP triples and network slices based on fully qualified domain names.
  • the present application also provides a network slicing access system, including a host computer and a communication module connected to the host computer; the communication module is used to connect to network devices through the network;
  • the communication module is used to realize the steps of the above method.
  • the network device includes a control management server and a service data processing server.
  • the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.
  • Figure 1 is a traditional application-aware network slicing solution
  • FIG. 2 is an application environment diagram of a network slicing access method in an embodiment
  • FIG. 3 is a schematic flow diagram of a network slice access method in an embodiment
  • FIG. 4 is a schematic flow diagram of the steps of establishing a data link corresponding to a network slice in an embodiment
  • FIG. 5 is a schematic flowchart of a network slice access method in another embodiment
  • FIG. 6 is a structural block diagram of a network slicing access device in an embodiment
  • FIG. 7 is an internal structural diagram of a network device in an embodiment
  • FIG. 8 is a schematic diagram of a control flow processing process in an embodiment
  • Fig. 9 is a schematic diagram of a data stream processing process in an embodiment.
  • Modem will obtain network slicing information and report it to the operating system slicing management component, including network slicing allowed by the network and URSP (UE Route Selection Policy, UE routing selection policy) information, where UE refers to User Equipment, that is, user equipment; 2) application Initiate slice evaluation according to specific services (TD, Traffic Descriptor, service descriptor); 3)
  • the operating system slice management component selects the corresponding slice according to the application service request, and triggers data dialing to establish a data connection;
  • the operating system slice management component selects the corresponding slice according to the dialing result Create and create the corresponding network interface, and return it to the application; 5)
  • the application binds the service data flow to the corresponding network interface, and sends and receives service data.
  • the traditional solution has restrictions on the business scenarios using modules, and the traditional solution needs to modify the application and operating system, which is complicated and requires a lot of work.
  • the Modem in the traditional solution is closely coupled with the operating system and Compatible with various host computers, it is impossible to require all host computer systems and applications to carry out the above modifications.
  • the implementation of the traditional solution is based on the application program and the operating system where the application program resides. Since it involves application routing, it needs to be implemented on the system where the application program resides.
  • the traditional solution needs to configure routing for the application, which needs to be implemented on the operating system where the application resides, and the slice management component needs to be deployed on the application operating system.
  • This application proposes a communication module-based slicing access scheme.
  • the module itself is separated from the application, and does not require the participation of the upper computer application and the upper computer operating system, thereby realizing network slicing for modules, upper computers and applications No perception, so that the traditional upper computer operating system and applications can realize the access of network slices without modification.
  • this application can be completed directly in the module according to the URSP carried in the 5G (5th Generation Mobile Communication Technology, fifth generation mobile communication technology) network signaling.
  • Slice management does not require the participation of network servers, applications, and operating systems where applications reside.
  • this application is a slicing solution based on the communication module, which can transparently use network slicing without the participation of the upper computer application and without modification of the upper computer operating system.
  • the network slicing access method provided in the embodiment of the present application can be applied to the application environment shown in FIG. 2 .
  • the communication module 104 provides network access for the upper computer 102, and the communication module 104 communicates with the network device 106 through the network.
  • the upper computer 102 may refer to a complete communication device, such as a personal computer PC (Personal Computer);
  • the communication module 104 may refer to a component that provides network access for the upper computer 102, such as a router or a Modem;
  • the network device 106 may be a server, for example, a control management server and a service data processing server.
  • the host computer 102 can be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, Internet of Things devices and portable wearable devices, and the Internet of Things devices can be smart speakers, smart TVs, smart air conditioners, smart car equipment etc.
  • Portable wearable devices can be smart watches, smart bracelets, head-mounted devices, and the like.
  • the server can be implemented by an independent server or a server cluster composed of multiple servers.
  • the communication module in the embodiment of this application may refer to a 5G module, and the 5G module may refer to a component that provides 5G network access for communication equipment, or may refer to a 5G network card Or a 5G network router.
  • the communication module in this application can be understood as a router.
  • Multiple slice WAN (Wide Area Network, wide area network) ports are established in the module. After receiving the data packets from the host computer, they will automatically pass through the A specific WAN port is sent to the network; in other examples, the communication module can have a built-in slice management component.
  • a network slicing access method is provided.
  • the application of the method to the communication module in FIG. 2 is used as an example for illustration, including the following steps:
  • Step 302 receiving slicing policy information sent by the network.
  • the network may refer to a 5G network.
  • the communication module completes the activation of the data link corresponding to the network slice according to the slicing policy information issued by the network, and configures routing and forwarding rules.
  • Network slicing in this application may refer to dividing network resources into logical or virtual networks (that is, "slices") to meet application scenarios with different requirements.
  • the communication module in this application may have a built-in slice management component.
  • the slice management component may refer to the management component, that is, the functional software responsible for the implementation of this application, which runs inside the module.
  • the slicing policy information may include routing information and service information, the service information may refer to service descriptor information, and the routing information may refer to routing descriptor information.
  • the slicing policy information in this application is used to instruct the communication module to establish a data link corresponding to the network slice, and to configure routing and forwarding rules; the data link and routing and forwarding rules can be applied to the data flow between the host computer and the communication module processing.
  • the routing information may be used to instruct the communication module to establish a data link corresponding to the network slice, and the service information may be used to instruct the communication module to configure routing and forwarding rules.
  • the slicing policy information may include user equipment routing policy rules issued by the network based on user equipment policy management; the routing information may include a routing descriptor; and the service information may include a service descriptor.
  • the slicing policy information in this application may refer to user equipment routing policy rules URSP Rules issued by the network.
  • the network can issue URSP Rules through the UE Policy Management (User Equipment Policy Management) process.
  • the user equipment routing selection policy rules URSP Rules may include service descriptor TD information and RSD (Route Selection Descriptor, routing selection descriptor) information.
  • this application can obtain the slicing policy information issued by the network during or after the communication module completes the registration connection process facing the network.
  • the communication module in this application can receive the slicing policy information when executing the corresponding control flow processing.
  • 5G network slicing can include: 1 Network slicing based on the destination address triplet, that is, based on the Internet Protocol (Internet Protocol, IP) Network slicing based on triplet; 2 Network slicing based on FQDN (Fully Qualified Domain Name, fully qualified domain name); 3 Network slicing based on DNN (Data Network Name, data network name); 4 Based on APP ID (Application Identification, application identification ) network slice.
  • this application is applicable to the above-mentioned 1 and 2 types of network slicing.
  • the network slicing application method of the present application is applied to a communication module including a slice management component; the network slicing includes IP triplet-based network slicing and fully qualified domain name-based network slicing.
  • the communication module in this application can be a 5G module with a built-in slice management component; the network slicing in this application can refer to 5G network slicing based on IP 5G network slicing.
  • Step 304 perform dial-up according to the routing selection information in the slice feature information and slice policy information, and establish a data link corresponding to the network slice facing the network; in the case of successful dial-up, configure routing and forwarding rules based on the service information in the slice policy information ;
  • the slice feature information is obtained during the registration process of the communication module to the network triggered by the dial-up of the upper computer connected to the communication module.
  • the communication module can match the routing information in the slicing policy information according to the slicing characteristic information, trigger the dialing process of the corresponding network slicing, and establish the data link of the corresponding network slicing road.
  • the communication module can configure routing and forwarding rules based on the service information in the slice policy information.
  • the slice feature information in this application may refer to feature information fed back by the network related to allowed network slices, for example, NSSAI (Network Slice Selection Assistance Information, Network Slice Selection Assistance Information) configuration information. Further, the slice feature information is obtained during the process of registering the communication module to the network triggered by the dial-up of the host computer connected to the communication module, that is, the communication module in this application can obtain the information during the process of registering to the network. slice feature information.
  • the upper computer dial-up in this application can refer to the registration connection between the upper computer and the 5G module
  • the network slice dial-up can refer to the registration connection between the 5G module and the 5G network.
  • the upper computer dialing in the application will trigger the communication module to initiate slice dialing; in order to facilitate the explanation of the above dialing process, in some examples, the communication module can be understood as a router or Modem, and the upper computer can be understood as a PC. In addition, the upper computer can dial during the dialing process of this network slice to obtain the private address assigned by the communication module. IP address.
  • the data link may include each network interface corresponding to each network slice respectively;
  • the slice feature information may include permission network slice selection auxiliary information; the method further includes:
  • the network registration request is used to instruct the network to feed back permitted network slice selection auxiliary information; wherein, the network registration request includes a list of network slices requested by the communication module; the permitted network slice selection auxiliary information includes a list of corresponding network slices Single network slice selection assistance information for allowed network slices in .
  • the slice characteristic information in this application may include the permitted network slice selection auxiliary information Allowed NSSAI, and the permitted network slice selection auxiliary information may include a single network slice selection auxiliary information S for the network slices allowed in the corresponding network slice list -NSSAI (Single Network Slice Selection Assistance Information, single network slice auxiliary information); and the network registration request can refer to the Requested NSSAI, the Requested NSSAI can refer to the slice list requested by the communication module when registering the network, and then the network can return according to the requested slice Allowed slicing (allowed network slicing).
  • the NSSAI configuration information in this application may include Configured NSSAI and/or Allowed NSSAI.
  • the communication module can have a built-in slice management component and configure the network registration request Requested NSSAI.
  • the Allowed NSSAI and Configured NSSAI can be obtained through the 5G Registration (5G registration) process.
  • the network can issue URSP Rules through the UE Policy Management process.
  • the communication module in this application can obtain Allowed NSSAI, URSP Rules and other information through the standard 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) signaling process.
  • the data link in this application may include each network interface corresponding to each network slice respectively, that is, the communication module in this application performs dial-up according to the slice characteristic information and the routing selection information in the slice policy information, and establishes network-oriented
  • the data link may refer to multiple network interfaces, and one network interface may correspond to one S-NSSAI.
  • the network interface may be a wide area network WAN port, that is, the communication module may establish multiple sliced WAN ports in the module.
  • the slice policy information refers to the user equipment routing policy issued by the network Rule URSP Rules
  • slice feature information refers to the permitted network slice selection auxiliary information Allowed NSSAI as an example
  • the communication module with the built-in slice management component can match the RSD information in the URSP according to the Allowed NSSAI, trigger the dialing process of the corresponding network slice, and establish a corresponding The network interface of the network slice.
  • the slicing policy information includes user equipment routing policy rules issued by the network based on user equipment policy management; the routing information includes a routing descriptor; as shown in Figure 4, according to the slice feature information and slice policy
  • the steps of dialing the routing information in the information and establishing a data link corresponding to the network slice may include:
  • Step 402 match the routing descriptor according to the slice feature information to trigger dialing, and confirm the key parameters used to establish the data link;
  • the key parameters include any one or any combination of the following parameters: single network slice selection auxiliary information, session service Continuity mode, session type and data network name;
  • Step 404 determine to initiate a PDU session, and send key parameters to the network.
  • the slicing policy information refers to the user equipment routing policy rules URSP Rules issued by the network
  • the slicing feature information refers to the permitted network slicing selection auxiliary information Allowed NSSAI as an example.
  • the information triggers dialing and initiates a multi-channel PDU (Protocol Data Unit, Protocol Data Unit) session establishment process, in which the communication module can send key parameters to the network to establish a data connection for the corresponding slice.
  • the dial-up is successful, and the network interface is created.
  • Key parameters in this application may include single network slice selection auxiliary information S-NSSAI, SSC (Session and Service Continuity, session service continuity) mode, DNN (Data Network Name, data network name) and session type.
  • S-NSSAI single network slice selection auxiliary information
  • SSC Session and Service Continuity, session service continuity
  • DNN Data Network Name, data network name
  • session type may refer to a PDU session type, for example, it may be IPv4 (Internet Protocol version 4, Internet Protocol version 4).
  • the slicing policy information includes user equipment routing policy rules issued by the network based on user equipment policy management;
  • the service information includes a service descriptor;
  • the steps of configuring routing and forwarding rules based on the service information in the slicing policy information may include:
  • the destination address includes the IP address and the IP triplet in the service descriptor; the IP address is obtained by analyzing the fully qualified domain name in the service descriptor through the domain name system.
  • the routing and forwarding rules in this application may be routing configurations based on the destination address; the destination address may include the IP address and the IP triplet in the service descriptor.
  • the IP address can be obtained by analyzing the fully qualified domain name FQDN in the service descriptor through the domain name system.
  • the routing and forwarding rules in this application are configured according to the destination address and port number. For example, under Linux, data packets sent to a certain address can be configured through an IP Rule to be sent through a specific network card. Wherein, the port number may be included in the TD information.
  • the slice policy information refers to the user equipment routing policy rules URSP Rules issued by the network
  • the slice feature information refers to the permission Take the network slicing selection auxiliary information Allowed NSSAI as an example.
  • the communication module with built-in slice management components can configure destination address routing and forwarding according to the IP triplet in the TD information in the URSP Rule and the IP address based on FQDN analysis after the dial-up is successful. Rules; wherein, the IP address can be obtained by resolving the FQDN through DNS (Domain Name System, domain name system). This application converts the FQDN into an IP address, combined with the destination IP contained in the IP triplet, and then directly configures the route.
  • DNS Domain Name System, domain name system
  • the communication module can forward the data transmitted by the host computer to different network slice network ports according to the destination address and port number, so as to realize different service types accessing different network slices.
  • both the IP triplet and FQDN can be included in the TD information in the URSP Rule; while the RSD includes parameters such as DNN, S-NSSAI, and SSC; among them, the parameters in the RSD can be used in the PDU Session establishment process; The information in the TD is used for the user to configure the route binding to the PDU session connection established according to the RSD parameters.
  • the communication module of this application can automatically activate the corresponding network slice data connection according to the RSD information in the URSP Rules issued by the Allowed NSSAI matching network, establish a network interface, and follow the URSP Rules in the TD information configures routing and forwarding rules; host computer systems and applications can use network slicing without any modification.
  • Step 306 receiving the uplink data from the host computer, forwarding the uplink data to the data link according to routing forwarding rules for transmission to the network; receiving downlink data from the network through the data link, and transmitting the downlink data to the host computer.
  • the communication module can start to be applied to the data flow processing process; for example, the communication module receives uplink data from the host computer and forwards the The rule forwards the uplink data to the data link for transmission to the network; another example, the communication module receives the downlink data from the network through the data link, and transmits the downlink data to the host computer.
  • the network interface is a wide area network WAN port;
  • the uplink data includes the IP data packet sent by the host computer using the private address assigned by the communication module;
  • the step of forwarding the uplink data to the data link for transmission to the network according to the routing and forwarding rules may include:
  • the IP data packet forwards the IP data packet to the corresponding network interface, so as to send the IP data packet after network address translation to the network;
  • the steps of receiving downlink data from the network through the data link and transmitting the downlink data to the host computer include:
  • the upper computer dials during the network slicing dialing process of the communication module, and then obtains the private address assigned by the communication module; in some examples, the private address may be an IP address, that is, a private IP address.
  • the communication module can receive the IP data packet sent by the host computer using the private IP address assigned by the communication module, and receive the network data sent by the network (for example, the data packet sent by the network).
  • the data stream processing process performed by the communication module in this application may include:
  • Uplink data The host computer uses the private IP address assigned by the communication module to send the IP data packet; the communication module forwards the IP data packet to the network interface of the corresponding network slice according to the destination address of the IP data packet and the routing and forwarding rules configured above, through NAT (Network Address Translation, Network Address Translation) sends the source address to the network after translation.
  • NAT Network Address Translation, Network Address Translation
  • Downlink data After the network data arrives at the network interface corresponding to the network slice of the module, the destination address is translated through NAT and forwarded to the host computer uniformly;
  • the communication module after the communication module receives the IP data packet sent by the host computer, it sends the corresponding network interface according to the routing and forwarding rules, and sends it to the network after NAT source address conversion; after the communication module receives the data packet sent by the network , and send them to the host computer after NAT destination address translation.
  • the communication module integrated with the slice management component in the module is an example of a 5G module.
  • This application provides a An application-aware network slicing solution based on 5G modules, which can include control flow processing and data flow processing; where:
  • Control flow processing includes: 1) 5G modules with built-in slice management components, configure requested NSSAI, and obtain Allowed NSSAI and Configured NSSAI through the 5G Registration (5G network registration) process. 2) The network issues URSP Rules (URSP rules) through the UE Policy Management process; 3) The 5G module matches the RSD information in the URSP (including S-NSSAI, SSC mode, DNN, etc.) according to the Allowed NSSAI, and triggers the corresponding network slice dialing process , and establish a network interface corresponding to the network slice; 4) After the dial-up is successful, the 5G module configures the destination address routing and forwarding rules according to the destination address 3-tuple and FQDN in the TD information in URSP Rules (FQDN can be resolved to an IP address through DNS) ;
  • the host computer can dial up during this process to obtain the private IP address assigned by the 5G module.
  • Data flow processing includes: 1) Uplink data: the host computer application uses the private IP address assigned by the 5G module to send the IP data packet; the 5G module sends the IP data packet according to the destination address of the IP data packet and the routing and forwarding rules configured in step 4) of the above control flow processing Forward to the network interface corresponding to the network slice, and then send to the network through NAT for source address translation; 2) Downlink data: After the network data reaches the network interface of the module corresponding to the network slice, the destination address is translated through NAT and forwarded to the host computer uniformly .
  • steps in the flow charts involved in the above embodiments are shown sequentially as indicated by the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in the flow charts involved in the above-mentioned embodiments may include multiple steps or stages, and these steps or stages are not necessarily executed at the same time, but may be performed at different times For execution, the execution sequence of these steps or stages is not necessarily performed sequentially, but may be performed in turn or alternately with other steps or at least a part of steps or stages in other steps.
  • an embodiment of the present application further provides a network slicing access device for implementing the above-mentioned network slicing access method.
  • the solution to the problem provided by the device is similar to the implementation described in the above method, so the specific limitations in one or more embodiments of the network slicing access device provided below can be referred to above for network slicing access The limitation of the method will not be repeated here.
  • a network slicing access device which is applied to a communication module; the device includes:
  • An information receiving module 610 configured to receive slicing policy information sent by the network
  • the slice access module 620 is configured to perform dial-up according to slice feature information and route selection information in slice policy information, and establish a data link corresponding to the network slice for the network; information configuration routing and forwarding rules; wherein, the slicing feature information is obtained during the process of registering the communication module to the network triggered by the dial-up of the host computer connected to the communication module;
  • the data transmission module 630 is used to receive the uplink data from the host computer, and forward the uplink data to the data link for transmission to the network according to routing and forwarding rules; receive the downlink data from the network through the data link, and transmit the downlink data to the host computer .
  • the data link includes each network interface corresponding to each network slice respectively;
  • the slice feature information includes permission network slice selection auxiliary information;
  • the device also includes:
  • the registration request module is used to configure and output a network registration request; the network registration request is used to instruct the network to feed back the auxiliary information of permitted network slice selection; wherein, the network registration request includes a list of network slices requested by the communication module; the permitted network slice selected auxiliary information includes Single network slice selection auxiliary information for corresponding network slices allowed in the network slice list.
  • the network interface is a wide area network WAN port;
  • the uplink data includes the IP data packets sent by the host computer using the private address assigned by the communication module;
  • the data transmission module includes:
  • the uplink transmission module is used for forwarding the IP data packet to the corresponding network interface according to the address and routing forwarding rules of the IP data packet, so as to send the IP data packet after the network address translation to the network;
  • the downlink transmission module is used to receive downlink data through the network interface, and send the downlink data after network address translation to the host computer.
  • the slicing policy information includes user equipment routing policy rules issued by the network based on user equipment policy management; the routing information includes a routing descriptor; the slicing access module includes:
  • the interface establishment module is used to match the routing descriptor according to the slice feature information to trigger dialing, confirm the key parameters used to establish the data link; and determine the initiation of the protocol data unit session, and send the key parameters to the network; wherein the key parameters include Any one or any combination of the following parameters: single network slice selection auxiliary information, session service continuity mode, session type, and data network name.
  • the slicing policy information includes user equipment routing policy rules issued by the network based on user equipment policy management;
  • the service information includes a service descriptor;
  • the slicing access module includes:
  • the rule configuration module is used to configure routing and forwarding rules according to the port number in the destination address and the service descriptor; the destination address includes the IP triplet in the IP address and the service descriptor; the IP address is the fully qualified domain name in the service descriptor domain name system analysis.
  • the communication module includes a slice management component; the network slice includes a network slice based on an IP triplet, and a network slice based on a fully qualified domain name.
  • Each module in the above-mentioned network slicing access device may be fully or partially implemented by software, hardware or a combination thereof.
  • the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, and can also be stored in the memory of the computer device in the form of software, so that the processor can invoke and execute the corresponding operations of the above-mentioned modules.
  • a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and or a computer.
  • a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and or a computer.
  • an application running on a server and a server can be a component.
  • One or more components can reside within a process and or thread of execution, and a component can be localized on one computer and or distributed between two or more computers.
  • a network slicing access system including a host computer and a communication module connected to the host computer; the communication module is used to connect with network devices through the network; wherein, the communication module is used to realize the above-mentioned The steps of the network slicing access method.
  • the network device may be a server, and its internal structure diagram may be as shown in FIG. 7 .
  • the network device includes a processor, a memory and a corresponding interface connected through a system bus. Wherein, the processor of the network device is used to provide calculation and control capabilities.
  • the memory of the network device includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system, computer programs and databases.
  • the internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium.
  • the database of the network device is used to store network data (eg, downlink data).
  • the network device is used to communicate with the external communication module through a network connection. When the computer program is executed by the processor, it is used to cooperate with the communication module in this application to implement a network slicing access method.
  • FIG. 7 is only a block diagram of a part of the structure related to the solution of this application, and does not constitute a limitation to the computer equipment on which the solution of this application is applied.
  • the specific computer equipment can be More or fewer components than shown in the figures may be included, or some components may be combined, or have a different arrangement of components.
  • the network device may include a control management server and a service data processing server.
  • a control management server may include a control management server and a service data processing server.
  • a specific example is used below to illustrate it.
  • the communication module integrated with the slice management component in the module is a 5G module as an example.
  • a certain terminal device needs to support two Class business data:
  • Remote control commands require high reliability, low latency, and small data volume, carried by network slice 1 (NS1, S-NSSAI 01.010101); the address of the control management server is 10.100.100.3:8000.
  • the control management server may refer to a remote control management server.
  • the Allowed NSSAI issued by the network includes network slices NS1 (S-NSSAI 01.010101), NS2 (S-NSSAI 01.010102);
  • URSP Rules include two rules, one of which is Rule1 where TD includes destination address 10.100.100.3, port 8000, protocol type TCP, RSD includes S-NSSAI (01.010101), PDU session type (IPv4), DNN (control.server ); TD in another Rule2 includes destination address 10.100.100.5, port 6000, protocol type TCP, RSD includes S-NSSAI (01.010102), PDU session type (IPv4), DNN (data.server).
  • the 5G module triggers dialing according to the RSD information in the Allowed NSSAI and URSP Rule, and initiates the process of establishing a 2-way PDU Session (the module sends key parameters such as S-NSSAI, DNN, and IP type to the network to establish a data connection for the corresponding slice) .
  • the dial-up is successful, create network interfaces (network interface NS1-WAN, network interface NS2-WAN), and configure routing and forwarding rules according to the TD information in Rule1 and Rule2.
  • the upper computer control management application and business function application respectively initiate data connections to the control management server and business data processing server.
  • the module forwards the host computer data to different network slice network ports according to the destination address and port number, so as to realize different service types accessing different network slices.
  • this application proposes a slicing access solution based on the communication module.
  • the module itself is separated from the application, and does not require the participation of the upper computer application and the upper computer operating system, and then realizes network slicing. And the application is not aware, so that the traditional upper computer operating system and applications can realize the access of network slices without modification.
  • this application can directly complete the slice management in the module according to the URSP carried in the 5G network signaling, without requiring the network server, application, and operating system where the application resides. participate.
  • this application is a slicing solution based on the communication module, which can transparently use network slicing without the participation of the upper computer application and without modification of the upper computer operating system.
  • a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the foregoing network slice access method is implemented.
  • a computer program product including a computer program, and when the computer program is executed by a processor, the foregoing network slice access method is implemented.
  • any reference to storage, database or other media used in the various embodiments provided in the present application may include at least one of non-volatile and volatile storage.
  • Non-volatile memory can include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive variable memory (ReRAM), magnetic variable memory (Magnetoresistive Random Access Memory, MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (Phase Change Memory, PCM), graphene memory, etc.
  • the volatile memory may include random access memory (Random Access Memory, RAM) or external cache memory, etc.
  • RAM Random Access Memory
  • RAM Random Access Memory
  • RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).
  • the databases involved in the various embodiments provided in this application may include at least one of a relational database and a non-relational database.
  • the non-relational database may include a blockchain-based distributed database, etc., but is not limited thereto.
  • the processors involved in the various embodiments provided by this application can be general-purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, data processing logic devices based on quantum computing, etc., and are not limited to this.

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Abstract

本申请涉及一种网络切片接入方法、装置、系统和存储介质。方法包括：接收网络发送的切片策略信息(S302)；根据切片特征信息和切片策略信息中的路由选择信息进行拨号，并面向网络建立对应网络切片的数据链路；在拨号成功的情况下，基于切片策略信息中的业务信息配置路由转发规则；其中，切片特征信息为在由连接通信模组的上位机拨号所触发的通信模组注册至网络的过程中得到(S304)；接收来自上位机的上行数据，根据路由转发规则将上行数据转发至数据链路以传输给网络；通过数据链路接收来自网络的下行数据，将下行数据传输给上位机(S306)。

Description

网络切片接入方法、装置、系统和存储介质
相关申请的交叉引用
本申请要求于2021年12月29日提交中国专利局、申请号为2021116407499、发明名称为“网络切片接入方法、装置、系统和存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，特别是涉及一种网络切片接入方法、装置、系统和存储介质。
背景技术
部分厂家在终端设备有适配网络切片(Network Slice)方案，涉及Modem(调制解调器)、应用操作系统以及切片网络应用；然而，传统方案需要对应用以及操作系统改造，例如，需增加切片管理组件，接收网络切片配置，监听应用连接请求，支持多路拨号以及配置路由等；目前，传统方案存在着方案复杂，工作量大的问题。
发明内容
根据本申请的各种实施例，提供一种无需改造系统的网络切片接入方法、装置、系统和存储介质。
第一方面，本申请提供了一种网络切片接入方法，该方法应用于通信模组；该方法包括：
接收网络发送的切片策略信息；
根据切片特征信息和切片策略信息中的路由选择信息进行拨号，并面向网络建立对应网络切片的数据链路；在拨号成功的情况下，基于切片策略信息中的业务信息配置路由转发规则；其中，切片特征信息为在由连接通信模组的上位机拨号所触发的通信模组注册至网络的过程中得到；
接收来自上位机的上行数据，根据路由转发规则将上行数据转发至数据链路以传输给网络；通过数据链路接收来自网络的下行数据，将下行数据传输给上位机。
在其中一个实施例中，数据链路包括与各网络切片分别一一对应的各网络接口；切片特征信息包括许可网络切片选择辅助信息；
该方法还包括：
配置并输出网络注册请求；网络注册请求用于指示网络反馈许可网络切片选择辅助信息；其中，网络注册请求包含通信模组请求的网络切片列表；许可网络切片选择辅助信息包含用于对应网络切片列表中允许的网络切片的单一网络切片选择辅助信息。
在其中一个实施例中，网络接口为广域网WAN口；上行数据包括经上位机采用通信模组分配的私有地址发送的IP数据包；
根据路由转发规则将上行数据转发至数据链路以传输给网络的步骤包括：
根据IP数据包的地址和路由转发规则，将IP数据包转发给对应的网络接口，以将经网络地址转换后的IP数据包发送给网络；
通过数据链路接收来自网络的下行数据，将下行数据传输给上位机的步骤包括：
通过网络接口接收下行数据，并将经网络地址转换后的下行数据发送给上位机。
在其中一个实施例中，切片策略信息包括经网络基于用户设备策略管理下发的用户设备路由选择策略规则；路由选择信息包括路由选择描述符；
根据切片特征信息和切片策略信息中的路由选择信息进行拨号，并面向网络建立对应网络切片的数据链路的步骤包括：
根据切片特征信息匹配路由选择描述符以触发拨号，确认用于建立数据链路的关键参数；关键参数包括以下参数中的任意一种或任意组合：单一网络切片选择辅助信息，会话服务连续性模式，会话类型和数据网络名称；
确定发起协议数据单元会话，将关键参数发送给网络。
在其中一个实施例中，切片策略信息包括经网络基于用户设备策略管理下发的用户设备路由选择策略规则；业务信息包括业务描述符；
在拨号成功的情况下，基于切片策略信息中的业务信息配置路由转发规则的步骤包括：
根据目的地址和业务描述符中的端口号配置路由转发规则；目的地址包括IP地址和业务描述符中的IP三元组；IP地址为业务描述符中的完全限定域名经域名系统解析得到。
在其中一个实施例中，该方法应用于包括切片管理组件的通信模组；网络切片包括基于IP三元组的网络切片，以及基于全限定域名的网络切片。
第二方面，本申请还提供了一种网络切片接入装置，该装置应用于通信模组；该装置包括：
信息接收模块，用于接收网络发送的切片策略信息；
切片接入模块，用于根据切片特征信息和切片策略信息中的路由选择信息进行拨号，并面向网络建立对应网络切片的数据链路；在拨号成功的情况下，基于切片策略信息中的业务信息配置路由转发规则；其中，切片特征信息为在由连接通信模组的上位机拨号所触发的通信模组注册至网络的过程中得到；
数据传输模块，用于接收来自上位机的上行数据，根据路由转发规则将上行数据转发至数据链路以传输给网络；通过数据链路接收来自网络的下行数据，将下行数据传输给上位机。
在其中一个实施例中，数据链路包括与各网络切片分别一一对应的各网络接口；切片特征信息包括许可网络切片选择辅助信息；
装置还包括：
注册请求模块，用于配置并输出网络注册请求；网络注册请求用于指示网络反馈许可网络切片选择辅助信息；其中，网络注册请求包含通信模组请求的网络切片列表；许可网络切片选择辅助信息包含用于对应网络切片列表中允许的网络切片的单一网络切片选择辅助信息。
在其中一个实施例中，网络接口为广域网WAN口；上行数据包括经上位机采用通信模组分配的私有地址发送的IP数据包；数据传输模块包括：
上行传输模块，用于根据IP数据包的地址和路由转发规则，将IP数据包转发给对应的网络接口，以将经网络地址转换后的IP数据包发送给网络；
下行传输模块，用于通过网络接口接收下行数据，并将经网络地址转换后的下行数据发送给上位机。
在其中一个实施例中，切片策略信息包括经网络基于用户设备策略管理下发的用户设备路由选择策略规则；路由选择信息包括路由选择描述符；切片接入模块包括：
接口建立模块，用于根据切片特征信息匹配路由选择描述符以触发拨号，确认用于建立数据链路的关键参数，以及确定发起协议数据单元会话，将关键参数发送给网络；关键参数包括以下参数中的任意一种或任意组合：单一网络切片选择辅助信息，会话服务连续性模式，会话类型和数据网络名称。
在其中一个实施例中，切片策略信息包括经网络基于用户设备策略管理下发的用户设备路由选择策略规则；业务信息包括业务描述符；
切片接入模块包括：
规则配置模块，用于根据目的地址和业务描述符中的端口号配置路由转发规则；目的地址包括IP地址和业务描述符中的IP三元组；IP地址为业务描述符中的完全限定域名经域名系统解析得到。
在其中一个实施例中，装置应用于包括切片管理组件的通信模组；网络切片包括基于IP三元组的网络切片，以及基于全限定域名的网络切片。
第三方面，本申请还提供了一种网络切片接入系统，包括上位机以及连接上位机的通信模组；通信模组用于通过网络与网络设备连接；
其中，通信模组用于实现上述的方法的步骤。
在其中一个实施例中，网络设备包括控制管理服务器和业务数据处理服务器。
第四方面，本申请还提供了一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现上述的方法的步骤。
本发明的一个或多个实施例的细节在下面的附图和描述中提出。本发明的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更好地描述和说明这里公开的那些发明的实施例和或示例，可以参考一幅或多幅附图。用于描述附图的附加细书或示例不应当被认为是对所公开的发明、目前描述的实施例和或示例以及目前理解的这些发明的最佳模式中的任何一者的范围的限制。
图1为传统应用感知的网络切片方案；
图2为一个实施例中网络切片接入方法的应用环境图；
图3为一个实施例中网络切片接入方法的流程示意图；
图4为一个实施例中建立对应网络切片的数据链路步骤的流程示意图；
图5为另一个实施例中网络切片接入方法的流程示意图；
图6为一个实施例中网络切片接入装置的结构框图；
图7为一个实施例中网络设备的内部结构图；
图8为一个实施例中控制流处理过程示意图；
图9为一个实施例中数据流处理过程示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
目前，以终端设备为Android终端为例，部分厂家在Android终端有适配网络切片方案，涉及Modem、应用操作系统以及切片网络应用，属于应用感知的网络切片方案，具体方案可以如图1所示：1)Modem将获取网络切片信息上报操作系统切片管理组件，包括网络允许的网络切片以及URSP(UE Route Selection Policy，UE路由选择策略)信息，其中UE指User Equipment，即用户设备；2)应用根据具体业务(TD，Traffic Descriptor，业务描述符)发起切片评估；3)操作系统切片管理组件根据应用业务请求选择对应切片，并触发数据拨号建立数据连接；4)操作系统切片管理组件根据拨号结果建立创建对应的网络接口，并返回给应用；5)应用将业务数据流绑定对应的网络接口，收发业务数据。
然而，传统方案对于使用模组的业务场景存在限制，且传统方案需要对应用以及操作系统改造，方案复杂，工作量大；另外，传统方案中Modem与操作系统、应用耦合紧密，通信模组需要与各类上位机适配，无法要求所有上位机系统以及应用进行上述改造。例如，传统方案在实现中基于应用程序以及应用程序所在的操作系统，因为涉及应用路由所以需要在应用所在系统实现。又如，传统方案需要针对应用配置路由，需要在应用所在操作系统实现，且需要在应用操作系统部署切片管理组件。
本申请则提出一种基于通信模组的切片接入方案，模组本身和应用是分离的，不需要上位机应用以及上位机操作系统的参与，进而实现网络切片对于模组、上位机以及应用无感知，从而使得传统上位机操作系统与应用无需改造即可实现网络切片的接入。此外，不同于通过网络服务器(例如，业务服务器等)触发的传统方案，本申请可以根据5G(5th Generation Mobile Communication Technology，第五代移动通信技术)网络信令中携带的URSP直接在模组完成切片管理，不需要网络服务器、应用以及应用所在操作系统参与。以上，本申请是基于通信模组的切片方案，不需要上位机应用参与，也不需要对上位机操作系统作改造即可透明使用网络切片。
本申请实施例提供的网络切片接入方法，可以应用于如图2所示的应用环境中。其中，通信模组104为上位机102提供网络接入，通信模组104通过网络与网络设备106进行通信。在一些示例中，上位机102可以指通信整机设备，例如，个人计算机PC(Personal Computer)；通信模组104可以指为上位机102提供网络接入的组件，例如路由器或Modem；而网络设备106可以是服务器，例如，控制管理服务器和业务数据处理服务器。
进一步的，上位机102可以但不限于是各种个人计算机、笔记本电脑、智能手机、平板电脑、物联网设备和便携式可穿戴设备，物联网设备可为智能音箱、智能电视、智能空调、智能车载设备等。便携式可穿戴设备可为智能手表、智能手环、头戴设备等。服务器可以用独立的服务器或者是多个服务器组成的服务器集群来实现。
需要说明的是，以5G为例，本申请实施例中的通信模组可以指5G模组，该5G模组可以指为通信整机设备提供5G网络接入的一个组件，也可以指5G网卡或者5G网络路由器。在一些示例中，可以将本申请中的通信模组理解为一个路由器，模组内建立多个切片WAN(Wide Area Network，广域网)口，收到上位机数据包之后，根据路由转发规则自动通过特定WAN口发送到网络；在另一些示例中，通信模组可以内置切片管理组件。
在一个实施例中，如图3所示，提供了一种网络切片接入方法，以该方法应用于图2中的通信模组为例进行说明，包括以下步骤：
步骤302，接收网络发送的切片策略信息。
其中，网络可以指5G网络。本申请中通信模组依据网络下发的切片策略信息，完成对应网络切片的数据链路的激活，并配置路由转发规则。本申请中的网络切片可以指将网络资源分为逻辑或虚拟网络(即“切片”)，以满足不同要求的应用场景。本申请中的通信模组可以内置切片管理组件，该切片管理组件可以指管理组件，即负责本申请实现的功能软件，运行于模组内部。
具体地，切片策略信息可以包含路由选择信息以及业务信息，该业务信息可以指业务描述符信息，而路由选择信息可以指路由选择描述符信息。本申请中的切片策略信息用于指示通信模组建立对应网络切片的数据链路，以及配置路由转发规则；该数据链路和路由转发规则可以应用到上位机与通信模组之间的数据流处理过程中。在一些示例中，路由选择信息可以用于指示通信模组建立对应网络切片的数据链路，业务信息可以用于指示通信模组配置路由转发规则。
在其中一个实施例中，切片策略信息可以包括经网络基于用户设备策略管理下发的用户设备路由选择策略规则；路由选择信息可以包括路由选择描述符；业务信息包括业务描述符。
具体而言，本申请中的切片策略信息可以指网络下发的用户设备路由选择策略规则URSP Rules。其中，网络可以通过UE Policy Management(用户设备策略管理)过程下发URSP Rules。该用户设备路由选择策略规则URSP Rules可以包含业务描述符TD信息以及RSD(Route Selection Descriptor，路由选择描述符)信息。进一步的，本申请可以在通信模组完成面对网络的注册连接过程中或之后，获 取到网络下发的该切片策略信息。
本申请中的通信模组在执行相应的控制流处理过程，可以接收该切片策略信息。需要说明的是，以5G为例，根据5G网络下发的URSP Rules中的TD信息，5G网络切片可以包括：①基于目的地址三元组的网络切片，即基于网际协议(Internet Protocol，IP)三元组的网络切片；②基于FQDN(Fully Qualified Domain Name，完全限定域名)的网络切片；③基于DNN(Data Network Name,数据网络名称)的网络切片；④基于APP ID(Application Identification，应用标识)的网络切片。而本申请则适用于上述①②类型网络切片。
在其中一个实施例中，本申请网络切片应用方法应用于包括切片管理组件的通信模组；网络切片包括基于IP三元组的网络切片，以及基于全限定域名的网络切片。具体地，以5G为例，本申请中的通信模组可以为内置有切片管理组件的5G模组；本申请中的网络切片可以指基于IP三元组的5G网络切片，以及基于全限定域名的5G网络切片。
步骤304，根据切片特征信息和切片策略信息中的路由选择信息进行拨号，并面向网络建立对应网络切片的数据链路；在拨号成功的情况下，基于切片策略信息中的业务信息配置路由转发规则；
其中，切片特征信息为在由连接通信模组的上位机拨号所触发的通信模组注册至网络的过程中得到。
具体而言，通信模组在获取到网络下发的切片策略信息后，可以根据切片特征信息匹配该切片策略信息中的路由选择信息，触发对应网络切片拨号流程，并建立对应网络切片的数据链路。同时，在网络切片拨号成功的情况下，通信模组可以基于切片策略信息中的业务信息配置出路由转发规则。
本申请中的切片特征信息可以指网络反馈的与允许的网络切片相关的特征信息，例如，NSSAI(Network Slice Selection Assistance Information，网络切片选择辅助信息)配置信息。进一步的，切片特征信息为在由连接通信模组的上位机拨号所触发的通信模组注册至网络的过程中得到，即本申请中的通信模组可以在注册至网络的过程中获取到该切片特征信息。需要说明的是，以5G为例，本申请中的上位机拨号可以指上位机与5G模组之间的注册连接，而网络切片拨号可以指5G模组与5G网络之间的注册连接，本申请中的上位机拨号会触发通信模组发起切片拨号；为了便于解释上述拨号过程，在一些示例中，可以把通信模组理解为路由器或者Modem，把上位机理解为PC。此外，上位机可以在此网络切片拨号过程中拨号，获取通信模组分配的私有地址，为便于解释，可以把通信模组理解为一个路由器，即该私有地址可以指通信模组给上位机分配的IP地址。
在其中一个实施例中，数据链路可以包括与各网络切片分别一一对应的各网络接口；切片特征信息可以包括许可网络切片选择辅助信息；该方法还包括：
配置并输出网络注册请求；网络注册请求用于指示网络反馈许可网络切片选择辅助信息；其中，网络注册请求包含通信模组请求的网络切片列表；许可网络切片选择辅助信息包含用于对应网络切片列表中允许的网络切片的单一网络切片选择辅助信息。
具体而言，本申请中的切片特征信息可以包括许可网络切片选择辅助信息Allowed NSSAI，该许可网络切片选择辅助信息可以包含用于对应网络切片列表中允许的网络切片的单一网络切片选择辅助信息S-NSSAI(Single Network Slice Selection Assistance Information，单一网络切片辅助信息)；而网络注册请求可以指Requested NSSAI，该Requested NSSAI可以指通信模组注册网络时请求的切片列表，进而网络可以根据请求的切片返回Allowed切片(允许的网络切片)。
在一些示例中，以切片特征信息为NSSAI配置信息为例，本申请中的NSSAI配置信息可以包括Configured NSSAI和/或Allowed NSSAI。
进一步的，以5G网络为例，通信模组可以内置切片管理组件，并配置网络注册请求Requested NSSAI，同时，可以通过5G Registration(5G注册)过程获取Allowed NSSAI，Configured NSSAI。此外，网络可以通过UE Policy Management过程下发URSP Rules。需要说明的是，本申请中的通信模组可以通过标准3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)信令过程获取Allowed NSSAI，URSP Rules等信息。
而本申请中的数据链路可以包括与各网络切片分别一一对应的各网络接口，即本申请中通信模组根据切片特征信息和切片策略信息中的路由选择信息进行拨号，并面向网络建立对应网络切片的数据链路，该数据链路可以指多个网络接口，一个网络接口可以与一个S-NSSAI相对应。在其中一个实施例中，网络接口可以为广域网WAN口，即通信模组可以在模组内建立多个切片WAN口。
对于本申请中的根据切片特征信息和切片策略信息中的路由选择信息进行拨号，并面向网络建立对应网络切片的数据链路的实现过程，以切片策略信息指网络下发的用户设备路由选择策略规则URSP Rules，切片特征信息指许可网络切片选择辅助信息Allowed NSSAI为例，内置有切片管理组件的通信模组，可以根据Allowed NSSAI匹配URSP中的RSD信息，触发对应网络切片拨号流程，并建立对应网络切片的网络接口。
在其中一个实施例中，切片策略信息包括经网络基于用户设备策略管理下发的用户设备路由选择 策略规则；路由选择信息包括路由选择描述符；如图4所示，根据切片特征信息和切片策略信息中的路由选择信息进行拨号，并面向网络建立对应网络切片的数据链路的步骤可以包括：
步骤402，根据切片特征信息匹配路由选择描述符以触发拨号，确认用于建立数据链路的关键参数；关键参数包括以下参数中的任意一种或任意组合：单一网络切片选择辅助信息，会话服务连续性模式，会话类型和数据网络名称；
步骤404，确定发起协议数据单元会话，将关键参数发送给网络。
具体而言，以切片策略信息指网络下发的用户设备路由选择策略规则URSP Rules，切片特征信息指许可网络切片选择辅助信息Allowed NSSAI为例，通信模组可以根据Allowed NSSAI以及URSP Rule中的RSD信息触发拨号，发起多路PDU(Protocol Data Unit，协议数据单元)Session建立过程，其中，通信模组可以将关键参数发送到网络建立对应切片的数据连接。拨号成功，创建网络接口。
本申请中的关键参数可以包括单一网络切片选择辅助信息S-NSSAI，SSC(Session and Service Continuity，会话服务连续性)模式，DNN(Data Network Name，数据网络名称)和会话类型。在一些示例中，会话类型可以指PDU会话类型，例如可以为IPv4(Internet Protocol version 4，网际协议版本4)。
进一步的，在其中一个实施例中，切片策略信息包括经网络基于用户设备策略管理下发的用户设备路由选择策略规则；业务信息包括业务描述符；
在拨号成功的情况下，基于切片策略信息中的业务信息配置路由转发规则的步骤可以包括：
根据目的地址和业务描述符中的端口号配置路由转发规则；目的地址包括IP地址和业务描述符中的IP三元组；IP地址为业务描述符中的完全限定域名经域名系统解析得到。
具体而言，本申请中的路由转发规则可以是根据目的地址进行的路由配置；该目的地址可以包括IP地址和业务描述符中的IP三元组。而IP地址可以为业务描述符中的完全限定域名FQDN经域名系统解析得到。在一些示例中，本申请中的路由转发规则是根据目的地址和端口号配置的，例如，Linux下可以通过IP Rule配置发往某个地址的数据包通过特定网卡发出。其中，端口号可以包含在TD信息中。
对于本申请中在拨号成功的情况下，基于切片策略信息中的业务信息配置路由转发规则的实现过程，以切片策略信息指网络下发的用户设备路由选择策略规则URSP Rules，切片特征信息指许可网络切片选择辅助信息Allowed NSSAI为例，内置有切片管理组件的通信模组，可以在拨号成功后，根据 URSP Rule中TD信息中的IP三元组以及基于FQDN解析的IP地址配置目的地址路由转发规则；其中，可以通过DNS(Domain Name System，域名系统)解析FQDN得到该IP地址。本申请将FQDN转换为IP地址，结合IP三元组包含的目的IP，进而可以直接配置路由。
基于本申请中的路由转发规则，通信模组可以根据目的地址以及端口号将上位机传输的数据分别转发至不同的网络切片网口，实现不同业务类型接入不同网络切片。
需要说明的是，IP三元组和FQDN都可以包含于URSP Rule中的TD信息；而RSD中包括DNN，S-NSSAI，SSC等参数；其中，RSD中的参数可以用于PDU Session建立过程；而TD中的信息用于用户配置路由绑定到根据RSD参数建立的PDU会话连接。
以上，针对IP三元组以及FQDN类型网络切片，本申请通信模组可以根据Allowed NSSAI匹配网络下发的URSP Rules中RSD信息自动激活对应网络切片数据连接，建立网络接口，并依据URSP Rules中的TD信息配置路由转发规则；上位机系统与应用无需任何改造即可使用网络切片。
步骤306，接收来自上位机的上行数据，根据路由转发规则将上行数据转发至数据链路以传输给网络；通过数据链路接收来自网络的下行数据，将下行数据传输给上位机。
具体而言，在完成上述建立网络接口以及配置路由转发规则的控制流处理过程后，通信模组可以开始应用于数据流处理过程；例如，通信模组接收来自上位机的上行数据，根据路由转发规则将上行数据转发至数据链路以传输给网络；又如，通信模组通过数据链路接收来自网络的下行数据，将下行数据传输给上位机。
在其中一个实施例中，网络接口为广域网WAN口；上行数据包括经上位机采用通信模组分配的私有地址发送的IP数据包；
根据路由转发规则将上行数据转发至数据链路以传输给网络的步骤可以包括：
根据IP数据包的地址和路由转发规则，将IP数据包转发给对应的网络接口，以将经网络地址转换后的IP数据包发送给网络；
通过数据链路接收来自网络的下行数据，将下行数据传输给上位机的步骤包括：
通过网络接口接收下行数据，并将经网络地址转换后的下行数据发送给上位机。
具体而言，上位机在通信模组的网络切片拨号过程中拨号，进而获取到通信模组分配的私有地址；在一些示例中，私有地址可以为IP地址，即私有IP地址。基于本申请中的数据链路，通信模组可以接收到上位机使用通信模组分配的私有IP地址发送的IP数据包，以及接收网络发送的网络数据(例 如，网络下发的数据包)。
本申请中通信模组执行的数据流处理过程可以包括：
上行数据：上位机使用通信模组分配的私有IP地址发送IP数据包；通信模组根据IP数据包目的地址以及上述配置的路由转发规则，将IP数据包转发至对应网络切片的网络接口，通过NAT(Network Address Translation，网络地址转换)做源地址转换后发送到网络。
下行数据：网络数据到达模组对应网络切片的网络接口后，通过NAT做目的地址转换并统一转发给上位机；
本申请中，通信模组收到上位机发送的IP数据包后，根据路由转发规则发送对应的网络接口，经过NAT源地址转换后发送到网络；通信模组收到网络下发的数据包后，经过NAT目的地址转换后统一发送给上位机。
为了进一步阐释本申请的方案，下面结合一个具体示例予以说明，如图5所示，以5G网络，模组内集成切片管理组件的通信模组是5G模组为例，本申请提供了一种基于5G模组的应用无感知网络切片方案，该方案可以包括控制流处理过程和数据流处理过程；其中：
控制流处理包括：1)内置切片管理组件的5G模组，配置requested NSSAI，并通过5G Registration(5G网络注册)过程获取Allowed NSSAI，Configured NSSAI。2)网络通过UE Policy Management过程下发URSP Rules(URSP规则)；3)5G模组根据Allowed NSSAI匹配URSP中的RSD信息(包括S-NSSAI，SSC模式，DNN等)，触发对应网络切片拨号流程，并建立对应网络切片的网络接口；4)拨号成功后，5G模组根据URSP Rules中TD信息中的目的地址3元组以及FQDN(FQDN可以通过DNS解析为IP地址)配置目的地址路由转发规则；
上位机可以在此过程中拨号，获取5G模组分配的私有IP地址。
数据流处理包括：1)上行数据：上位机应用使用5G模组分配的私有IP地址发送IP数据包；5G模组根据IP数据包目的地址以及上述控制流处理步骤4)中配置的路由转发规则转发至对应网络切片的网络接口，通过NAT做源地址转换后发送到网络；2)下行数据：网络数据到达模组对应网络切片的网络接口后，通过NAT做目的地址转换并统一转发给上位机。
上述网络切片接入方法中，针对IP三元组以及FQDN类型网络切片，基于网络下发的URSP Rules以及Allowed NSSAI等信息，依靠内置有切片管理组件的通信模组自动激活相关网络切片数据连接并配置路由转发规则，上位机系统与应用无需任何改造即可使用网络切片。
应该理解的是，虽然如上所述的各实施例所涉及的流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，如上所述的各实施例所涉及的流程图中的至少一部分步骤可以包括多个步骤或者多个阶段，这些步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，这些步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤中的步骤或者阶段的至少一部分轮流或者交替地执行。
基于同样的发明构思，本申请实施例还提供了一种用于实现上述所涉及的网络切片接入方法的网络切片接入装置。该装置所提供的解决问题的实现方案与上述方法中所记载的实现方案相似，故下面所提供的一个或多个网络切片接入装置实施例中的具体限定可以参见上文中对于网络切片接入方法的限定，在此不再赘述。
在一个实施例中，如图6所示，提供了一种网络切片接入装置，该装置应用于通信模组；该装置包括：
信息接收模块610，用于接收网络发送的切片策略信息；
切片接入模块620，用于根据切片特征信息和切片策略信息中的路由选择信息进行拨号，并面向网络建立对应网络切片的数据链路；在拨号成功的情况下，基于切片策略信息中的业务信息配置路由转发规则；其中，切片特征信息为在由连接通信模组的上位机拨号所触发的通信模组注册至网络的过程中得到；
数据传输模块630，用于接收来自上位机的上行数据，根据路由转发规则将上行数据转发至数据链路以传输给网络；通过数据链路接收来自网络的下行数据，将下行数据传输给上位机。
在其中一个实施例中，数据链路包括与各网络切片分别一一对应的各网络接口；切片特征信息包括许可网络切片选择辅助信息；该装置还包括：
注册请求模块，用于配置并输出网络注册请求；网络注册请求用于指示网络反馈许可网络切片选择辅助信息；其中，网络注册请求包含通信模组请求的网络切片列表；许可网络切片选择辅助信息包含用于对应网络切片列表中允许的网络切片的单一网络切片选择辅助信息。
在其中一个实施例中，网络接口为广域网WAN口；上行数据包括经上位机采用通信模组分配的私有地址发送的IP数据包；数据传输模块包括：
上行传输模块，用于根据IP数据包的地址和路由转发规则，将IP数据包转发给对应的网络接口，以将经网络地址转换后的IP数据包发送给网络；
下行传输模块，用于通过网络接口接收下行数据，并将经网络地址转换后的下行数据发送给上位机。
在其中一个实施例中，切片策略信息包括经网络基于用户设备策略管理下发的用户设备路由选择策略规则；路由选择信息包括路由选择描述符；切片接入模块包括：
接口建立模块，用于根据切片特征信息匹配路由选择描述符以触发拨号，确认用于建立数据链路的关键参数；以及确定发起协议数据单元会话，将关键参数发送给网络；其中，关键参数包括以下参数中的任意一种或任意组合：单一网络切片选择辅助信息，会话服务连续性模式，会话类型和数据网络名称。
在其中一个实施例中，切片策略信息包括经网络基于用户设备策略管理下发的用户设备路由选择策略规则；业务信息包括业务描述符；切片接入模块包括：
规则配置模块，用于根据目的地址和业务描述符中的端口号配置路由转发规则；目的地址包括IP地址和业务描述符中的IP三元组；IP地址为业务描述符中的完全限定域名经域名系统解析得到。
在其中一个实施例中，通信模组包括切片管理组件；网络切片包括基于IP三元组的网络切片，以及基于全限定域名的网络切片。
上述网络切片接入装置中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。
如在本申请中所使用的，术语“组件”、“模块”和“系统”等旨在表示计算机相关的实体，它可以是硬件、硬件和软件的组台、软件、或者执行中的软件。例如，组件可以是但不限于是，在处理器上运行的进程、处理器、对象、可执行码、执行的线程、程序和或计算机。作为说明，运行在服务器上的应用程序和服务器都可以是组件。一个或多个组件可以驻留在进程和或执行的线程中，并且组件可以位于一个计算机内和或分布在两个或更多的计算机之间。
在一个实施例中，提供了一种网络切片接入系统，包括上位机以及连接上位机的通信模组；通信模组用于通过网络与网络设备连接；其中，通信模组用于实现上述的网络切片接入方法的步骤。
具体的，该网络设备可以是服务器，其内部结构图可以如图7所示。该网络设备包括通过系统总线连接的处理器、存储器和相应接口。其中，该网络设备的处理器用于提供计算和控制能力。该网络设备的存储器包括非易失性存储介质和内存储器。该非易失性存储介质存储有操作系统、计算机程序和数据库。该内存储器为非易失性存储介质中的操作系统和计算机程序的运行提供环境。该网络设备的数据库用于存储网络数据(例如，下行数据)。该网络设备用于与外部的通信模组通过网络连接通信。该计算机程序被处理器执行时用于与本申请中的通信模组配合以实现一种网络切片接入方法。
本领域技术人员可以理解，图7中示出的结构，仅仅是与本申请方案相关的部分结构的框图，并不构成对本申请方案所应用于其上的计算机设备的限定，具体的计算机设备可以包括比图中所示更多或更少的部件，或者组合某些部件，或者具有不同的部件布置。
在其中一个实施例中，网络设备可以包括控制管理服务器和业务数据处理服务器。为了进一步阐释本申请的方案，下面结合一个具体示例予以说明，如图8所示，以5G网络，模组内集成切片管理组件的通信模组是5G模组为例，某终端设备需支持两类业务数据：
1)远程控制指令：要求高可靠性，低延时，数据量小，由网络切片1(NS1，S-NSSAI 01.010101)承载；控制管理服务器地址为10.100.100.3：8000。其中，控制管理服务器可以指远程控制管理服务器。
2)业务数据：数据量大，数据时延不敏感，由网络切片2(NS2，S-NSSAI 01.010102)承载；业务数据处理服务器地址10.100.100.5：6000。
如图8所示的控制流处理：
1)5G模组注册后，网络下发Allowed NSSAI包含网络切片NS1(S-NSSAI 01.010101)，NS2(S-NSSAI 01.010102)；
2)URSP Rules中包括两条规则，其中一条Rule1中TD包括目的地址10.100.100.3，端口8000，协议类型TCP，RSD包括S-NSSAI(01.010101)，PDU会话类型(IPv4)，DNN(control.server)；另外一条Rule2中TD包括目的地址10.100.100.5，端口6000，协议类型TCP，RSD包括S-NSSAI(01.010102)，PDU会话类型(IPv4)，DNN(data.server)。
3)5G模组根据Allowed NSSAI以及URSP Rule中的RSD信息触发拨号，发起2路PDU Session建立过程(模组将S-NSSAI，DNN，IP类型等关键参数发送到网络建立对应切片的数据连接)。拨号成功，创建网络接口(网络接口NS1-WAN，网络接口NS2-WAN)，并根据Rule1，Rule2中的TD信息配置路由转发规则。
如图9所示的数据流处理：
1)上位机控制管理应用与业务功能应用分别发起数据连接到控制管理服务器与业务数据处理服务器。
2)模组根据目的地址以及端口号将上位机数据分别转发至不同的网络切片网口，实现不同业务类型接入不同网络切片。
以上，本申请则提出一种基于通信模组的切片接入方案，模组本身和应用是分离的，不需要上位机应用以及上位机操作系统的参与，进而实现网络切片对于模组、上位机以及应用无感知，从而使得传统上位机操作系统与应用无需改造即可实现网络切片的接入。此外，不同于通过网络服务器(例如，业务服务器等)触发的传统方案，本申请可以根据5G网络信令中携带的URSP直接在模组完成切片管理，不需要网络服务器、应用以及应用所在操作系统参与。以上，本申请是基于通信模组的切片方案，不需要上位机应用参与，也不需要对上位机操作系统作改造即可透明使用网络切片。
在一个实施例中，提供了一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现上述网络切片接入方法。
在一个实施例中，提供了一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现上述网络切片接入方法。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的计算机程序可存储于一非易失性计算机可读取存储介质中，该计算机程序在执行时，可包括如上述各方法的实施例的流程。其中，本申请所提供的各实施例中所使用的对存储器、数据库或其它介质的任何引用，均可包括非易失性和易失性存储器中的至少一种。非易失性存储器可包括只读存储器(Read-Only Memory，ROM)、磁带、软盘、闪存、光存储器、高密度嵌入式非易失性存储器、阻变存储器(ReRAM)、磁变存储器(Magnetoresistive Random Access Memory，MRAM)、铁电存储器(Ferroelectric Random Access Memory，FRAM)、相变存储器(Phase Change Memory，PCM)、石墨烯存储器等。易失性存储器可包括随机存取存储器(Random Access Memory，RAM)或外部高速缓冲存储器等。作为说明而非局限，RAM可以是多种形式，比如静态随机存取存储器(Static Random Access Memory，SRAM)或动态随机存取存储器(Dynamic Random Access Memory，DRAM)等。本申请所提供的各实施例中所涉及的数据库可包括关系型数据库和非关系型数据库中至少一种。非关系型数据库可包括基于区块链的分布式数据库等，不限于此。本申请所提供的各实施例 中所涉及的处理器可为通用处理器、中央处理器、图形处理器、数字信号处理器、可编程逻辑器、基于量子计算的数据处理逻辑器等，不限于此。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请的保护范围应以所附权利要求为准。

Claims (15)

  1. 一种网络切片接入方法，所述方法应用于通信模组；所述方法包括：
    接收网络发送的切片策略信息；
    根据切片特征信息和所述切片策略信息中的路由选择信息进行拨号，并面向所述网络建立对应网络切片的数据链路；在拨号成功的情况下，基于所述切片策略信息中的业务信息配置路由转发规则；其中，所述切片特征信息为在由连接所述通信模组的上位机拨号所触发的所述通信模组注册至所述网络的过程中得到；
    接收来自所述上位机的上行数据，根据所述路由转发规则将所述上行数据转发至所述数据链路以传输给所述网络；通过所述数据链路接收来自所述网络的下行数据，将所述下行数据传输给所述上位机。
  2. 根据权利要求1所述的方法，其特征在于，所述数据链路包括与各网络切片分别一一对应的各网络接口；所述切片特征信息包括许可网络切片选择辅助信息；
    所述方法还包括：
    配置并输出网络注册请求；所述网络注册请求用于指示所述网络反馈所述许可网络切片选择辅助信息；其中，所述网络注册请求包含所述通信模组请求的网络切片列表；所述许可网络切片选择辅助信息包含用于对应所述网络切片列表中允许的网络切片的单一网络切片选择辅助信息。
  3. 根据权利要求2所述的方法，其特征在于，所述网络接口为广域网WAN口；所述上行数据包括经所述上位机采用所述通信模组分配的私有地址发送的IP数据包；
    所述根据所述路由转发规则将所述上行数据转发至所述数据链路以传输给所述网络的步骤包括：
    根据所述IP数据包的地址和所述路由转发规则，将所述IP数据包转发给对应的所述网络接口，以将经网络地址转换后的所述IP数据包发送给所述网络；
    所述通过所述数据链路接收来自所述网络的下行数据，将所述下行数据传输给所述上位机的步骤包括：
    通过所述网络接口接收所述下行数据，并将经网络地址转换后的所述下行数据发送给所述上位机。
  4. 根据权利要求1至3任意一项所述的方法，其特征在于，所述切片策略信息包括经所述网络基于用户设备策略管理下发的用户设备路由选择策略规则；所述路由选择信息包括路由选择描述符；
    所述根据切片特征信息和所述切片策略信息中的路由选择信息进行拨号，并面向所述网络建立对 应网络切片的数据链路的步骤包括：
    根据所述切片特征信息匹配所述路由选择描述符以触发拨号，确认用于建立所述数据链路的关键参数；所述关键参数包括以下参数中的任意一种或任意组合：单一网络切片选择辅助信息，会话服务连续性模式，会话类型和数据网络名称；
    确定发起协议数据单元会话，将所述关键参数发送给所述网络。
  5. 根据权利要求1至3任意一项所述的方法，其特征在于，所述切片策略信息包括经所述网络基于用户设备策略管理下发的用户设备路由选择策略规则；所述业务信息包括业务描述符；
    所述在拨号成功的情况下，基于所述切片策略信息中的业务信息配置路由转发规则的步骤包括：
    根据目的地址和所述业务描述符中的端口号配置所述路由转发规则；所述目的地址包括IP地址和所述业务描述符中的IP三元组；所述IP地址为所述业务描述符中的完全限定域名经域名系统解析得到。
  6. 根据权利要求1所述的方法，其特征在于，所述方法应用于包括切片管理组件的通信模组；所述网络切片包括基于IP三元组的网络切片，以及基于全限定域名的网络切片。
  7. 一种网络切片接入装置，所述装置应用于通信模组；所述装置包括：
    信息接收模块，用于接收网络发送的切片策略信息；
    切片接入模块，用于根据切片特征信息和所述切片策略信息中的路由选择信息进行拨号，并面向所述网络建立对应网络切片的数据链路；在拨号成功的情况下，基于所述切片策略信息中的业务信息配置路由转发规则；其中，所述切片特征信息为在由连接所述通信模组的上位机拨号所触发的所述通信模组注册至所述网络的过程中得到；
    数据传输模块，用于接收来自所述上位机的上行数据，根据所述路由转发规则将所述上行数据转发至所述数据链路以传输给所述网络；通过所述数据链路接收来自所述网络的下行数据，将所述下行数据传输给所述上位机。
  8. 根据权利要求7所述的装置，其特征在于，所述数据链路包括与各网络切片分别一一对应的各网络接口；所述切片特征信息包括许可网络切片选择辅助信息；
    所述装置还包括：
    注册请求模块，用于配置并输出网络注册请求；所述网络注册请求用于指示所述网络反馈所述许可网络切片选择辅助信息；其中，所述网络注册请求包含所述通信模组请求的网络切片列表；所述许 可网络切片选择辅助信息包含用于对应所述网络切片列表中允许的网络切片的单一网络切片选择辅助信息。
  9. 根据权利要求8所述的装置，其特征在于，所述网络接口为广域网WAN口；所述上行数据包括经所述上位机采用所述通信模组分配的私有地址发送的IP数据包；所述数据传输模块包括：
    上行传输模块，用于根据所述IP数据包的地址和所述路由转发规则，将所述IP数据包转发给对应的所述网络接口，以将经网络地址转换后的所述IP数据包发送给所述网络；
    下行传输模块，用于通过所述网络接口接收所述下行数据，并将经网络地址转换后的所述下行数据发送给所述上位机。
  10. 根据权利要求7至9任意一项所述的装置，其特征在于，所述切片策略信息包括经所述网络基于用户设备策略管理下发的用户设备路由选择策略规则；所述路由选择信息包括路由选择描述符；所述切片接入模块包括：
    接口建立模块，用于根据所述切片特征信息匹配所述路由选择描述符以触发拨号，确认用于建立所述数据链路的关键参数，以及确定发起协议数据单元会话，将所述关键参数发送给所述网络；所述关键参数包括以下参数中的任意一种或任意组合：单一网络切片选择辅助信息，会话服务连续性模式，会话类型和数据网络名称。
  11. 根据权利要求7至9任意一项所述的装置，其特征在于，所述切片策略信息包括经所述网络基于用户设备策略管理下发的用户设备路由选择策略规则；所述业务信息包括业务描述符；
    所述切片接入模块包括：
    规则配置模块，用于根据目的地址和所述业务描述符中的端口号配置所述路由转发规则；所述目的地址包括IP地址和所述业务描述符中的IP三元组；所述IP地址为所述业务描述符中的完全限定域名经域名系统解析得到。
  12. 根据权利要求7所述的装置，其特征在于，所述装置应用于包括切片管理组件的通信模组；所述网络切片包括基于IP三元组的网络切片，以及基于全限定域名的网络切片。
  13. 一种网络切片接入系统，包括上位机以及连接所述上位机的通信模组；所述通信模组用于通过网络与网络设备连接；
    其中，所述通信模组用于实现权利要求1至6中任一项所述的方法的步骤。
  14. 根据权利要求13所述的系统，其特征在于，所述网络设备包括控制管理服务器和业务数据处 理服务器。
  15. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1至6中任一项所述的方法的步骤。
PCT/CN2022/099703 2021-12-29 2022-06-20 网络切片接入方法、装置、系统和存储介质 WO2023123899A1 (zh)

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