WO2025007643A1 - 卫星服务功能链接入方法、装置、电子设备及存储介质 - Google Patents

卫星服务功能链接入方法、装置、电子设备及存储介质 Download PDF

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Publication number
WO2025007643A1
WO2025007643A1 PCT/CN2024/091906 CN2024091906W WO2025007643A1 WO 2025007643 A1 WO2025007643 A1 WO 2025007643A1 CN 2024091906 W CN2024091906 W CN 2024091906W WO 2025007643 A1 WO2025007643 A1 WO 2025007643A1
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Prior art keywords
satellite
sfc
service function
user terminal
information
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PCT/CN2024/091906
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English (en)
French (fr)
Inventor
王恒
齐文
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China Telecom Corp Ltd Technology Innovation Center
China Telecom Corp Ltd
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China Telecom Corp Ltd Technology Innovation Center
China Telecom Corp Ltd
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a satellite service function link access method, device, electronic device and computer-readable storage medium.
  • 3GPP 3rd Generation Partnership Project
  • 5G NR New Radio
  • the satellite network domain may be composed of one or more satellites and the intersatellite links between them to form a backhaul link, and for each satellite, there are one or more network service function entities; currently, both the control plane and the user plane do not support service function chain related functions; when user traffic passes through the backhaul link, it may need to pass through one or more service function entities, such as: firewall, NAT (Network Address Translation), etc., but these service function entities are currently deployed based on pre-configuration, which is not conducive to the development of automated, customized, and variable services.
  • network service function entities such as: firewall, NAT (Network Address Translation), etc.
  • the present disclosure provides a satellite service function link access method, device, electronic device and computer-readable storage medium, which at least to a certain extent overcome the problem in the related art that the mobile network cannot cooperate with the satellite network to provide technical support for the development of various services for terminals or third parties.
  • a satellite service function chain access method comprising: when a service function path SFP of a user terminal does not satisfy a satellite backhaul SFC rule, a satellite service function chain satellite SFC control plane entity receives SFC information sent by a session management function entity; the satellite SFC control plane entity determines a destination according to the SFC information; A target service function path SFP and a target satellite, wherein the target satellite ensures that at least one SFC serves the user terminal at each moment within the SFC service duration.
  • the SFC information includes satellite backhaul SFC rules, and/or user terminal location; the satellite backhaul SFC rules include at least one of the following: access control information, traffic classification information, service function list, uplink and downlink indications, and SFC service duration.
  • the satellite SFC control plane entity returns the traffic steering information corresponding to the target SFP to the session management function entity; when the session management function entity determines that the network service header NSH in the traffic steering information has changed, the session management function entity sends a session update modification request to the user plane function entity, wherein the session update modification request includes the traffic steering information, so that the user plane function entity modifies the session according to the traffic steering information.
  • the traffic steering information includes at least one of the following: type identification, NSH, transport layer protocol, target IP address, and target port.
  • it also includes: when the user terminal sends traffic, the user plane function entity processes the data packet corresponding to the traffic according to the satellite backhaul SFC rule and the traffic steering information.
  • it also includes: when the user terminal accesses and creates a session, and the PCC rule corresponding to the user terminal is triggered, the policy control function entity sends a session association modification request to the session management function entity, wherein the session association modification request includes a policy and charging control PCC rule; the policy control function entity receives a modification indication returned by the session management function entity; wherein the PCC rule includes at least one of the following: time, user terminal location, subscription and unsubscription related traffic services, and satellite backhaul SFC rules corresponding to one or more satellites.
  • it further includes: when the policy control function entity receives a trigger message sent by an application function and/or a trigger condition is met, the PCC rule corresponding to the user terminal is triggered.
  • the trigger condition includes at least one of the following: time, user terminal location, and subscription and unsubscription of related traffic services.
  • it further includes: when the target satellite moves, updating the target SFP and the target satellite according to the SFC information.
  • a satellite service function link access device comprising:
  • the receiving module when the service function path SFP of the user terminal does not meet the satellite backhaul SFC rule, the satellite service function chain satellite SFC control plane entity receives the SFC information sent by the session management function entity;
  • the satellite SFC control plane entity determines the target service function path SFP according to the SFC information and a target satellite, wherein the target satellite ensures that at least one SFC serves the user terminal at each moment within the SFC service duration.
  • an electronic device including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute any one of the above-mentioned satellite service function link access methods by executing the executable instructions.
  • a computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the satellite service function link access method described in any one of the above is implemented.
  • a computer program product including a computer program, and when the computer program is executed by a processor, the satellite service function link access method is implemented.
  • the satellite service function chain access method, device, electronic device and computer-readable storage medium provided by the embodiments of the present invention, when it is determined through the session management function entity that the service function path SFP of the user terminal does not meet the satellite return SFC rule, the satellite service function chain satellite SFC control plane entity receives the SFC information including the satellite return SFC rule and/or the user terminal location sent by the session management function entity; the satellite SFC control plane entity determines the target service function path SFP and the target satellite according to the service function list and other information in the SFC information, so as to ensure that at least one SFC serves the user terminal at each moment within the SFC service duration, thereby realizing the mobile network and the satellite network working together to provide technical support for the terminal or a third party to provide a variety of services, making the deployment, opening and operation and maintenance of related services more flexible and automated.
  • FIG1 shows a flow chart of a satellite service function link access method in an embodiment of the present disclosure
  • FIG2 shows a flow chart of a traffic processing method according to an embodiment of the present disclosure
  • FIG3 shows a flow chart of a session modification processing method in an embodiment of the present disclosure
  • FIG4 shows a schematic diagram of a satellite service function link access device in an embodiment of the present disclosure
  • FIG5 shows a schematic diagram of a satellite service function link input message flow in an embodiment of the present disclosure
  • FIG6 is a schematic diagram showing a network architecture of a mobile network backhaul link accessing a satellite service function chain in an air-ground scenario according to an embodiment of the present disclosure.
  • FIG. 7 shows a structural block diagram of an electronic device in an embodiment of the present disclosure.
  • SFC Service Function Chain
  • PCC Policy and Charging Control
  • SFP Service Function Path
  • Network Service Header generally includes the chain identifier and the position on the chain.
  • PCF Policy Control function
  • Session Management function is responsible for tunnel maintenance, IP address allocation and management, UP function selection, policy implementation and QoS control, billing data collection, roaming, etc.
  • UPF User plane function
  • a satellite service function link access method is provided in an embodiment of the present disclosure, and the method can be executed by any electronic device with computing and processing capabilities.
  • FIG. 1 shows a flow chart of a satellite service function link access method in an embodiment of the present disclosure.
  • the satellite service function link access method provided in an embodiment of the present disclosure includes the following steps:
  • the satellite service function chain satellite SFC control plane entity receives SFC information sent by the session management function entity.
  • the policy control function entity when a user terminal accesses and creates a session, and a PCC rule corresponding to the user terminal is triggered, the policy control function entity sends a satellite backhaul SFC rule session association modification request to the session management function entity, and receives a modification indication returned by the session management function entity.
  • the session management function entity determines whether the SFP currently serving the user terminal meets the satellite backhaul SFC rule. If so, it returns a message that it has been met to the policy control function entity. Otherwise, it sends SFC information to the satellite SFC control plane entity.
  • the SFC information includes but is not limited to: satellite return SFC rules, and/or user terminal location, etc.; it should be noted that the satellite return SFC rules are service function chain rules for satellite return, and the satellite return SFC rules included in the SFC information include but are not limited to: original satellite return SFC rules, dynamic satellite return SFC rules requested to be updated, etc.; the user terminal location includes but is not limited to the original user terminal location, the user terminal location requested to be updated, and other information.
  • Satellite backhaul SFC rules include but are not limited to at least one of the following: access control information, traffic classification information, service function list, uplink and downlink instructions, SFC service duration, etc.
  • the access control information includes, but is not limited to: SFC network deployment location, SFC network logical location, SFC access information, etc.
  • the SFC network deployment location includes but is not limited to the ground, HAP (high-altitude platform), LEO (Low Earth orbit), MEO (Medium Earth Orbit), GEO (geostationary orbit) and other information.
  • the SFC network logical positions include but are not limited to: N3, N9, N6, etc.
  • the SFC access information includes but is not limited to: user name, key, encryption algorithm, etc.
  • the traffic classification information includes but is not limited to a combination of one or more of the following: target IP address segment, target port segment, network protocol type, data packet length, DNN (Data Network Name), 5QI (5G quality of service identifier), etc.
  • the service function list includes, but is not limited to, traffic services, one or more type identifiers, and a service function list corresponding to each type that can reflect the order in which traffic enters.
  • the uplink and downlink indications include, but are not limited to, enumeration types, including uplink, downlink, uplink and downlink, and other enumeration types.
  • the SFC service duration represents the time length information of the service function chain service.
  • the satellite SFC control plane entity determines the target service function path SFP and the target satellite according to the SFC information, wherein the target satellite ensures that at least one SFC serves the user terminal at each moment within the SFC service duration.
  • the satellite SFC control plane entity finds one or more ordered groups of target satellites that can provide corresponding service functions within the SFC service duration based on the order corresponding to the service function list in the satellite return SFC rule, and controls these target satellites and other satellites that may participate in routing exchange to use intersatellite links for data transmission, ensuring that at each moment within the SFC service duration, there is at least one satellite network SFC serving the user terminal, and returns corresponding traffic steering information to the session management function entity.
  • the target SFP and the target satellite are updated according to the SFC information to meet the requirements of the SFP.
  • the user plane functions of the mobile network core network cannot communicate with the satellite network and cannot perceive and select the traffic services of the satellite backhaul link. Therefore, it is difficult to meet various customized needs under the trend of network convergence. For specific service functions that all traffic passes through, such as firewalls, NAT, etc., manual routing configuration is required, which takes a long time and has poor scalability and real-time performance.
  • SFC-related functions are introduced on the core network side of the mobile network.
  • the user plane traffic can flexibly select the automatically orchestrated service function chain when passing through the satellite backhaul network, thereby achieving the linkage between the mobile network and the satellite network service function chain when deploying service functions such as application acceleration and HTTP header enhancement, and realizing the collaboration between the mobile network and the satellite network to provide technical support for the development of various services for terminals or third parties, making the deployment, commissioning and operation and maintenance of related services more flexible and automated.
  • FIG2 shows a flow chart of a traffic processing method in an embodiment of the present disclosure.
  • the traffic processing method provided in an embodiment of the present disclosure includes the following steps:
  • the satellite SFC control plane entity returns traffic steering information corresponding to the target SFP to the session management function entity.
  • the traffic steering information includes but is not limited to at least one of the following: type identification, NSH, transport layer protocol, target IP address, target port, etc.
  • S206 The user plane function entity modifies the session according to the traffic steering information.
  • the user plane function entity processes the data packets corresponding to the traffic according to the satellite backhaul SFC rule and traffic steering information.
  • the user plane function entity classifies the traffic according to the traffic classification information in the satellite backhaul SFC rule. Make a distinction and encapsulate and forward the matching traffic according to the traffic steering information.
  • the user plane functional entity when the traffic is uplink traffic, classifies the data packets in the uplink traffic, and encapsulates different data packets based on the traffic steering information, such as constructing and adding NSH on the basis of the original data packet, and encapsulating the transport layer and the network layer, so as to forward it to one or more SFPs; when the traffic is downlink traffic, the user plane functional entity identifies and processes the encapsulated data packets.
  • the terminal backhaul link SFC related strategy is dynamically changed, and the service function chain strategy is negotiated through the mobile network control plane and the satellite network satellite SFC control plane, so that user traffic can flexibly select the backhaul link and SFP, so as to provide services for customer traffic in real time on demand, and realize the collaboration between the mobile network and the satellite network to provide technical support for the development of automated, customized and changeable services for terminals or third parties, so that the deployment, opening and operation and maintenance of related services are more flexible and automated.
  • FIG3 shows a flow chart of a session modification processing method in an embodiment of the present disclosure.
  • the session modification processing method provided in an embodiment of the present disclosure includes the following steps:
  • the policy control function entity stores a default or dynamic PCC rule of a user terminal.
  • the policy control function entity supports receiving, storing, and deleting satellite backhaul SFC rules, and carries the satellite backhaul SFC rules when issuing default or dynamic PCC rules.
  • the PCC rule corresponding to the user terminal is triggered, and the PCC rule includes one or more satellite backhaul SFC rules corresponding to the satellite, and the policy control function entity sends a session association modification request to the session management function entity.
  • S306 The policy control function entity receives the modification instruction returned by the session management function entity.
  • the session association modification request indicates that a session corresponding to the user terminal needs to be modified, wherein the session association modification request includes a policy and charging control PCC rule.
  • the PCC rules include but are not limited to at least one of the following: time, user terminal location, subscription and unsubscription of related traffic services, satellite backhaul SFC rules corresponding to one or more satellites, etc.
  • the policy control function entity when the policy control function entity receives a trigger message sent by the application function and/or the trigger condition is met, the PCC rule corresponding to the user terminal is triggered.
  • the triggering conditions include but are not limited to at least one of the following: time, user terminal location, subscription and unsubscription of related traffic services, etc.; for example, when the time is A and the user terminal location is B, the PCC rule corresponding to the user terminal is triggered.
  • the policy control function entity supports receiving, storing, and deleting satellite backhaul SFC rules, and carries satellite backhaul SFC rules when issuing default or dynamic PCC rules.
  • the mobile network session management function entity communicates with The communication between satellite SFC control planes and the session-based satellite SFC strategy select specific SFCs for session-granular traffic in real time, thereby providing a specific service combination for backhaul link traffic and providing refined and automated management methods for users' high-end customized needs. At the same time, it increases the flexibility of satellite network function deployment and has good application prospects in future network scenarios such as 5G or 6G.
  • the present disclosure also provides a satellite service function link access device, as described in the following embodiments. Since the principle of solving the problem in the device embodiment is similar to that in the above method embodiment, the implementation of the device embodiment can refer to the implementation of the above method embodiment, and the repeated parts will not be repeated.
  • FIG4 shows a schematic diagram of a satellite service function link access device in an embodiment of the present disclosure.
  • the satellite service function link access device 4 includes: a receiving module 401 and a determining module 402;
  • the receiving module 401 processes as follows: when the service function path SFP of the user terminal does not meet the satellite backhaul SFC rule, the satellite service function chain satellite SFC control plane entity receives the SFC information sent by the session management function entity.
  • the receiving module 401 includes a first receiving module, and the processing method is as follows: when a user terminal accesses to create a session and the PCC rule corresponding to the user terminal is triggered, the policy control function entity sends a session association modification request including a satellite backhaul SFC rule to the session management function entity.
  • the receiving module 401 includes a second receiving module, and the processing method is as follows: the policy control function entity receives the modification indication returned by the session management function entity.
  • the receiving module 401 includes a third receiving module, and the processing method is as follows: the session management function entity determines whether the SFP currently serving the user terminal meets the satellite backhaul SFC rules. If so, it returns to the policy control function entity that it has been met; otherwise, it sends SFC information to the satellite SFC control plane entity.
  • the determination module 402 is used for the satellite SFC control plane entity to determine the target service function path SFP and the target satellite according to the SFC information, wherein the target satellite ensures that at least one SFC serves the user terminal at each moment within the SFC service duration.
  • the determination module 402 is also used for: the satellite SFC control plane entity finds one or more ordered target satellites that can provide corresponding service functions within the SFC service duration based on the order corresponding to the service function list in the satellite return SFC rule, and controls these target satellites and other satellites that may participate in routing exchange to use intersatellite links for data transmission, ensuring that at each moment within the SFC service duration, there is at least one satellite network SFC serving the user terminal, and returns the corresponding traffic guidance information to the session management function entity.
  • the satellite service function chain access device 4 further includes: an updating module, which is used to update the target SFP and the target satellite according to the SFC information to meet the requirements of the SFP when the target satellite moves.
  • the satellite service function chain access device 4 further includes: a traffic processing module, and the processing method is as follows: The satellite SFC control plane entity returns the traffic steering information corresponding to the target SFP to the session management function entity.
  • the satellite service function chain access device 4 also includes a traffic processing module, and the processing method is as follows: the satellite SFC control plane entity returns the traffic steering information corresponding to the target SFP to the session management function entity; when the session management function entity determines that the network service header NSH in the traffic steering information has changed, the session management function entity sends a session update modification request to the user plane function entity, wherein the session update modification request includes the traffic steering information; the user plane function entity modifies the session according to the traffic steering information; when the user terminal has traffic sent out, the user plane function entity processes the data packet corresponding to the traffic according to the satellite backhaul SFC rules and the traffic steering information.
  • SFC-related functions are introduced on the core network side of the mobile network.
  • the user plane traffic can flexibly select the automatically orchestrated service function chain when passing through the satellite backhaul network, thereby achieving the linkage between the mobile network and the satellite network service function chain when deploying service functions such as application acceleration and HTTP header enhancement, providing customers with real-time and precise session traffic management and scheduling, improving customer experience, and increasing the flexibility of satellite network function deployment.
  • FIG5 shows a schematic diagram of a satellite service function link incoming message flow in an embodiment of the present disclosure.
  • the satellite service function link incoming message flow includes the following steps:
  • the user subscribes to the satellite backhaul traffic acceleration service.
  • the computer system writes the dynamic PCC rules including the dynamic SFC rules corresponding to the user terminal into the policy control function entity.
  • the policy control function entity sends a session association modification request message of the Npcf_SMPolicyControl_UpdateNotify request operation to the session management function entity, and the corresponding satellite backhaul SFC rules are filled in the message.
  • satellite backhaul SFC rules include:
  • SF List [Acceleration, Interception, Store and Forward]
  • the service function list includes: the type identifier is 1, and the service list represents application acceleration Acceleration, interruption Interception, and store and forwarding Store and Forward satellite backhaul SFC traffic services.
  • the terminal backhaul link SFC related strategy is dynamically changed, and the service function chain strategy is negotiated between the mobile network control plane and the satellite network satellite SFC control plane, so that the user traffic can flexibly select the backhaul link and SFP, so as to provide services for customer traffic in real time on demand, and realize the cooperation between the mobile network and the satellite network to provide technical support for the development of automated, customized and changeable services for the terminal or the third party, so that the relevant business departments can
  • the deployment, commissioning and operation and maintenance are more flexible and automated, which is conducive to the virtualization and cloudification of network services.
  • access networks, satellite backhaul networks, core networks and other networks may use technologies and/or formats including Hyper Text Mark-up Language (HTML), Extensible Markup Language (XML), etc. to represent data exchanged through the network.
  • HTTP Hyper Text Mark-up Language
  • XML Extensible Markup Language
  • conventional encryption technologies such as Secure Socket Layer (SSL), Transport Layer Security (TLS), Virtual Private Network (VPN), Internet Protocol Security (IPsec), etc. may be used to encrypt all or some links.
  • SSL Secure Socket Layer
  • TLS Transport Layer Security
  • VPN Virtual Private Network
  • IPsec Internet Protocol Security
  • customized and/or dedicated data communication technologies may be used to replace or supplement the above data communication technologies.
  • Policy control function entity 603 supports receiving, storing, and deleting satellite return SFC rules, storing the default or dynamic PCC rules of the user terminal 601, and carrying satellite return SFC rules when issuing default or dynamic PCC rules.
  • the policy control function entity 603 notifies the session management function entity 604 in the session management association modification process and proceeds to the subsequent steps. Otherwise, there is no need to inform the session management function entity 604 in the session management association modification process.
  • the application function entity may send a message to trigger the PCC rule, or the policy control function entity 603 may trigger the PCC rule according to conditions, including but not limited to time, location of the user terminal 601, subscription and unsubscription of related traffic services, etc.
  • Session management function entity 604 supports analysis of default or dynamic PCC rules including satellite backhaul SFC rules, supports communication with satellite SFC control plane entity 606, and updates necessary information such as satellite SFP and user terminal 601 location.
  • the session management function entity 604 communicates with the satellite network satellite SFC control plane entity 606, carrying content including but not limited to the original satellite return SFC rules, user terminal 601 location and other information, as well as the dynamic satellite return SFC rules requested to be updated, user terminal 601 location and other information.
  • the satellite network satellite SFC control plane entity 606 decides to modify and update the existing SFP based on the above SFC information, or selects other existing SFPs or creates a new SFP based on demand. It needs to find one or more ordered groups of target satellites that can provide corresponding service functions within the SFC service duration based on the order corresponding to the service function list in the satellite return SFC rule, and control these target satellites and other satellites that may participate in routing exchanges to use intersatellite links for data transmission, ensuring that at each moment within the SFC service duration, there is at least one satellite network SFC serving the terminal, and returns the corresponding traffic guidance information to the session management function entity 604.
  • the session management function entity 604 determines that the network service header NSH in the traffic steering information is changed, the session management function entity 604 sends the traffic steering information to the user plane function entity 605 .
  • the electronic device 700 according to this embodiment of the present disclosure is described below with reference to Fig. 7.
  • the electronic device 700 shown in Fig. 7 is only an example and should not bring any limitation to the functions and scope of use of the embodiment of the present disclosure.
  • the electronic device 700 is in the form of a general computing device.
  • the components of the electronic device 700 may include but are not limited to: at least one processing unit 710, at least one storage unit 720, and a bus 730 connecting different system components (including the storage unit 720 and the processing unit 710).
  • the storage unit stores program codes, which can be executed by the processing unit 710, so that the processing unit 710 executes the steps described in the above “exemplary method” section of this specification according to various exemplary embodiments of the present disclosure.
  • the processing unit 710 can execute the following steps of the above method embodiment: when the service function path SFP of the user terminal does not meet the satellite backhaul SFC rules, the satellite service function chain SFC control plane entity receives the SFC information sent by the session management function entity; the satellite SFC control plane entity determines the target service function path SFP and the target satellite based on the SFC information, wherein the target satellite ensures that at least one SFC serves the user terminal at each moment within the SFC service duration.
  • the storage unit 720 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 7201 and/or a cache storage unit 7202 , and may further include a read-only storage unit (ROM) 7203 .
  • RAM random access storage unit
  • ROM read-only storage unit
  • the storage unit 720 may also include a program/utility 7204 having a set (at least one) of program modules 7205, such program modules 7205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.
  • program modules 7205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.
  • Bus 730 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
  • the electronic device 700 can also be connected to one or more external devices 740 (such as a keyboard, a pointing device, a Bluetooth device, etc.)
  • the electronic device 700 may communicate with one or more devices that enable a user to interact with the electronic device 700, and/or communicate with any device (e.g., a router, a modem, etc.) that enables the electronic device 700 to communicate with one or more other computing devices. Such communication may be performed through an input/output (I/O) interface 750.
  • the electronic device 700 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and/or a public network, such as the Internet) through a network adapter 760.
  • networks e.g., a local area network (LAN), a wide area network (WAN), and/or a public network, such as the Internet
  • the network adapter 760 communicates with other modules of the electronic device 700 through a bus 730. It should be understood that, although not shown in the figure, other hardware and/or software modules may be used in conjunction with the electronic device 700, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.
  • the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.
  • a non-volatile storage medium which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.
  • a computing device which can be a personal computer, a server, a terminal device, or a network device, etc.
  • a computer-readable storage medium is also provided, which may be a readable signal medium or a readable storage medium.
  • a program product capable of implementing the above method of the present disclosure is stored thereon.
  • various aspects of the present disclosure may also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to cause the terminal device to execute the steps according to various exemplary implementations of the present disclosure described in the above “Exemplary Method” section of this specification.
  • the satellite service function chain SFC control plane entity receives the SFC information sent by the session management function entity; the satellite SFC control plane entity determines the target service function path SFP and the target satellite based on the SFC information, wherein the target satellite ensures that at least one SFC serves the user terminal at each moment within the SFC service duration.
  • Computer-readable storage media in the present disclosure may include, but are not limited to, an electrical connection having one or more conductors, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or flash memory erasable programmable read-only memory
  • CD-ROM compact disk read-only memory
  • CD-ROM compact disk read-only memory
  • magnetic storage device or any suitable combination of the foregoing.
  • a computer readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, in which a readable program code is carried. Such propagated data signals may take many forms, including but not limited to Electromagnetic signal, optical signal or any suitable combination thereof.
  • a readable signal medium may also be any readable medium other than a readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device.
  • the program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.
  • the program code for performing the operations of the present disclosure may be written in any combination of one or more programming languages, including object-oriented programming languages such as Java, C++, etc., and conventional procedural programming languages such as "C" or similar programming languages.
  • the program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.
  • the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., using an Internet service provider to connect through the Internet).
  • LAN local area network
  • WAN wide area network
  • the technical solution according to the implementation mode of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the implementation mode of the present disclosure.
  • a non-volatile storage medium which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.
  • a computing device which can be a personal computer, a server, a mobile terminal, or a network device, etc.

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Abstract

一种卫星服务功能链接入方法、装置、电子设备及计算机可读存储介质，涉及通信技术领域。该方法包括：当通过会话管理功能实体确定用户终端的服务功能路径SFP不满足卫星回传SFC规则时，卫星SFC控制面实体接收会话管理功能实体发送的包括卫星回传SFC规则和/或用户终端位置等的SFC信息；卫星SFC控制面实体根据SFC信息中的服务功能列表等信息确定目标服务功能路径SFP及目标卫星，以确保SFC服务时长内每个时刻至少有一条SFC为用户终端服务。上述方法能实现移动网络与卫星网络协同为终端或第三方提供多变业务的开展提供技术支持，使得相关业务部署开通运维更加灵活与自动化。

Description

卫星服务功能链接入方法、装置、电子设备及存储介质
相关申请的交叉引用
本公开要求于2023年07月06日提交的申请号为202310827652.1、名称为“卫星服务功能链接入方法、装置、电子设备及存储介质”的中国专利申请的优先权，该中国专利申请的全部内容通过引用全部并入本文。
技术领域
本公开涉及通信技术领域，尤其涉及一种卫星服务功能链接入方法、装置、电子设备及计算机可读存储介质。
背景技术
当前3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)只考虑卫星作为5G NR(New Radio，新无线)提供接入或作为回传链路的场景，但没有明确星间链的使用场景。
在卫星作回传场景中，卫星网络域可能由一颗或多颗卫星及它们之间的星间链组成回传链路，而对于每颗卫星，上面有一个或多个网络服务功能实体；当前控制面与用户面均不支持服务功能链相关功能；当用户流量在回传链路中通过时，可能需要通过一个或多个服务功能实体，如：防火墙、NAT(Network Address Translation，网络地址转换)等，但这些服务功能实体目前都是基于预配置的方式进行部署的，不利于自动化、定制化、多变业务的开展。
需要说明的是，在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解，因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
本公开提供一种卫星服务功能链接入方法、装置、电子设备及计算机可读存储介质，至少在一定程度上克服相关技术中移动网络不能与卫星网络协同为终端或第三方提供多变业务的开展提供技术支持的问题。
本公开的其他特性和优点将通过下面的详细描述变得显然，或部分地通过本公开的实践而习得。
根据本公开的一个方面，提供一种卫星服务功能链接入方法，包括：当用户终端的服务功能路径SFP不满足卫星回传SFC规则时，卫星服务功能链卫星SFC控制面实体接收会话管理功能实体发送的SFC信息；所述卫星SFC控制面实体根据所述SFC信息确定目 标服务功能路径SFP及目标卫星，其中，所述目标卫星确保SFC服务时长内每个时刻至少有一条SFC为所述用户终端服务。
在本公开的一个实施例中，所述SFC信息包括卫星回传SFC规则、和/或用户终端位置；所述卫星回传SFC规则包括以下至少之一：接入控制信息、流量分类信息、服务功能列表、上下行指示、SFC服务时长。
在本公开的一个实施例中，还包括：所述卫星SFC控制面实体向所述会话管理功能实体返回所述目标SFP对应的流量引导信息；当所述会话管理功能实体确定所述流量引导信息中网络服务报头NSH改变时，所述会话管理功能实体向用户面功能实体发送会话更新修改请求，其中，所述会话更新修改请求包括流量引导信息，以便用户面功能实体根据所述流量引导信息修改会话。
在本公开的一个实施例中，所述流量引导信息包括以下至少之一：类型标识、NSH、传输层协议、目标IP地址、目标端口。
在本公开的一个实施例中，还包括：当所述用户终端有流量发出时，所述用户面功能实体根据所述卫星回传SFC规则及所述流量引导信息对所述流量对应的数据包进行处理。
在本公开的一个实施例中，还包括：当所述用户终端接入创建会话时，且所述用户终端对应的PCC规则被触发时，策略控制功能实体向所述会话管理功能实体发送会话关联修改请求，其中，所述会话关联修改请求包括策略与计费控制PCC规则；所述策略控制功能实体接收所述会话管理功能实体返回的修改指示；其中，所述PCC规则包括以下至少之一：时间、用户终端位置、订购与退订相关流量服务、一条或多条卫星对应的卫星回传SFC规则。
在本公开的一个实施例中，还包括：当所述策略控制功能实体接收到应用功能发送的触发消息、和/或满足触发条件时，所述用户终端对应的PCC规则被触发。
在本公开的一个实施例中，所述触发条件包括以下至少之一：时间、用户终端位置、订购与退订相关流量服务。
在本公开的一个实施例中，还包括：当所述目标卫星移动时，根据所述SFC信息更新所述目标SFP及所述目标卫星。
根据本公开的另一个方面，还提供了一种卫星服务功能链接入装置，包括：
接收模块，当用户终端的服务功能路径SFP不满足卫星回传SFC规则时，卫星服务功能链卫星SFC控制面实体接收会话管理功能实体发送的SFC信息；
确定模块，所述卫星SFC控制面实体根据所述SFC信息确定目标服务功能路径SFP 及目标卫星，其中，所述目标卫星确保SFC服务时长内每个时刻至少有一条SFC为所述用户终端服务。
根据本公开的另一个方面，还提供了一种电子设备，包括：处理器；以及存储器，用于存储所述处理器的可执行指令；其中，所述处理器配置为经由执行所述可执行指令来执行上述任意一项所述卫星服务功能链接入方法。
根据本公开的另一个方面，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，所述计算机程序被处理器执行时实现上述任意一项所述的卫星服务功能链接入方法。
根据本公开的另一个方面，还提供一种计算机程序产品，包括计算机程序，所述计算机程序被处理器执行时实现上述的卫星服务功能链接入方法。
本公开的实施例所提供的卫星服务功能链接入方法、装置、电子设备及计算机可读存储介质，当通过会话管理功能实体确定用户终端的服务功能路径SFP不满足卫星回传SFC规则时，卫星服务功能链卫星SFC控制面实体接收会话管理功能实体发送的包括卫星回传SFC规则、和/或用户终端位置等的SFC信息；卫星SFC控制面实体根据SFC信息中的服务功能列表等信息确定目标服务功能路径SFP及目标卫星，以确保SFC服务时长内每个时刻至少有一条SFC为用户终端服务，从而实现移动网络与卫星网络协同为终端或第三方提供多变业务的开展提供技术支持，使得相关业务部署开通运维更加灵活与自动化。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出本公开实施例中一种卫星服务功能链接入方法流程图；
图2示出本公开实施例中一种流量处理方法流程图；
图3示出本公开实施例中一种会话修改处理方法流程图；
图4示出本公开实施例中一种卫星服务功能链接入装置示意图；
图5示出本公开实施例中一种卫星服务功能链接入消息流程示意图；
图6示出本公开实施例中一种空天地场景下移动网络回传链路接入卫星服务功能链的网络架构示意图；和
图7示出本公开实施例中一种电子设备的结构框图。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施方式使得本公开将更加全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施方式中。
此外，附图仅为本公开的示意性图解，并非一定是按比例绘制。图中相同的附图标记表示相同或类似的部分，因而将省略对它们的重复描述。附图中所示的一些方框图是功能实体，不一定必须与物理或逻辑上独立的实体相对应。可以采用软件形式来实现这些功能实体，或在一个或多个硬件模块或集成电路中实现这些功能实体，或在不同网络和/或处理器装置和/或微控制器装置中实现这些功能实体。
为了便于理解，下面首先对本公开涉及到的几个名词进行解释如下：
服务功能链(Service Function Chain，SFC)，其目的是动态建立服务链使不同租户的流量可以按照不同顺序导向不同的服务功能模块；其概念类似于策略路由，即SFC使网络报文流量走特定的路径，而不是通过IP目的地址来查看路由表得最终目的地。
策略与计费控制(Policy and Charging Control，PCC)，即一系列相关信息与一系列相关操作的集合，通常包含3大类信息：服务数据流检查信息、策略控制信息、计费相关信息。
服务功能路径(Service Function Path，SFP)，指服务功能的集合。
网络服务报头(Network Service Header，NSH)，一般包括链标识、链上的位置。
策略控制功能(Policy Control function，PCF，)提供控制平面功能的策略规则。
会话管理功能(Session Management function，SMF)，负责隧道维护、IP地址分配和管理、UP功能选择、策略实施和QoS中的控制、计费数据采集、漫游等。
用户面功能(The User plane function，UPF)，分组路由转发，策略实施，流量报告，Qos处理。
下面结合附图及实施例对本示例实施方式进行详细说明。
首先，本公开实施例中提供了一种卫星服务功能链接入方法，该方法可以由任意具备计算处理能力的电子设备执行。
图1示出本公开实施例中一种卫星服务功能链接入方法流程图，如图1所示，本公开实施例中提供的卫星服务功能链接入方法包括如下步骤：
S102，当用户终端的服务功能路径SFP不满足卫星回传SFC规则时，卫星服务功能链卫星SFC控制面实体接收会话管理功能实体发送的SFC信息。
在一个实施例中，当用户终端接入创建会话时，且用户终端对应的PCC规则被触发时，策略控制功能实体向会话管理功能实体发送包括卫星回传SFC规则会话关联修改请求，并接收会话管理功能实体返回的修改指示。
在一个实施例中，会话管理功能实体判断当前服务该用户终端的SFP是否满足卫星回传SFC规则，若是，则向策略控制功能实体返回已满足，否则，向卫星SFC控制面实体发送SFC信息。
在一个实施例中，SFC信息包括但不限于：卫星回传SFC规则、和/或用户终端位置等；需要说明的是，卫星回传SFC规则为卫星回传的服务功能链规则，SFC信息包括的卫星回传SFC规则包括但不限于：原有的卫星回传SFC规则、请求更新的动态卫星回传SFC规则等；用户终端位置包括但不限于原有的用户终端位置、请求更新的用户终端位置等信息。
卫星回传SFC规则包括但不限于以下至少之一：接入控制信息、流量分类信息、服务功能列表、上下行指示、SFC服务时长等。
在一个实施例中，接入控制信息包括但不限于：SFC网络部署位置、SFC网络逻辑位置、SFC接入信息等。
在一个实施例中，SFC网络部署位置包括但不限于地面Ground，HAP(high-altitude platform，高空平台)、LEO(Low Earth orbit，低地轨道)、MEO(Medium Earth Orbit，引入中地轨道)、GEO(geostationary orbit，地球静止轨道)等信息。
在一个实施例中，SFC网络逻辑位置包括但不限于：N3、N9、N6等。
在一个实施例中，SFC接入信息包括但不限于：用户名、密钥、加密算法等。
在一个实施例中，流量分类信息包括但不限于以下内容中的一个或多个的组合：目标IP地址段、目标端口段、网络协议类型、数据包长度、DNN(Data Network Name，数据网络名称)，5QI(5G quality of service identifier，5G服务质量标识符)等。
在一个实施例中，服务功能列表包括但不限于流量服务、一个或多个类型标识，每个类型对应的可以反映流量进入顺序的服务功能列表。
在一个实施例中，上下行指示包括但不限于：枚举类型，包括上行、下行、上下行等枚举类型。
SFC服务时长表征服务功能链服务的时间长度信息。
S104，卫星SFC控制面实体根据SFC信息确定目标服务功能路径SFP及目标卫星，其中，目标卫星确保SFC服务时长内每个时刻至少有一条SFC为用户终端服务。
在一个实施例中，卫星SFC控制面实体基于卫星回传SFC规则中的服务功能列表对应的顺序找到SFC服务时长内的一组或多组有序的可以提供对应服务功能的目标卫星，并控制这些目标卫星以及其他可能参与路由交换的卫星使用星间链进行数据传输，确保在SFC服务时长内的每个时刻，至少有一条卫星网络SFC为该用户终端服务，并向会话管理功能实体返回对应的流量引导信息。
在一个实施例中，当目标卫星移动时，根据SFC信息更新目标SFP及目标卫星等满足SFP的需求。
相关技术中，移动网络核心网的用户面功能，无法与卫星网络通信，不能感知选择卫星回传链路的流量服务，因此很难满足网络融合趋势下各种定制化需求；针对流量都经过的特定服务功能，如防火墙、NAT等，均需采用人工方式进行路由配置，所需时间长、扩展性和实时性差。
上述实施例中，移动网络核心网侧引入SFC相关功能，通过与卫星网络或其他承载网络的卫星SFC控制面协商，使得用户面流量通过卫星回传网络时可以灵活选择自动编排的服务功能链，从而达到部署应用加速、HTTP头增强等服务功能时，实现移动网络与卫星网络服务功能链之间的联动，实现移动网络与卫星网络协同为终端或第三方提供多变业务的开展提供技术支持，使得相关业务部署开通运维更加灵活与自动化。
图2示出本公开实施例中一种流量处理方法流程图，如图2所示，本公开实施例中提供的流量处理方法包括如下步骤：
S202，卫星SFC控制面实体向会话管理功能实体返回目标SFP对应的流量引导信息。
在一个实施例中，流量引导信息包括但不限于以下至少之一：类型标识、NSH、传输层协议、目标IP地址、目标端口等。
S204，当会话管理功能实体确定流量引导信息中网络服务报头NSH改变时，会话管理功能实体向用户面功能实体发送会话更新修改请求，其中，会话更新修改请求包括流量引导信息。
S206，用户面功能实体根据流量引导信息修改会话。
S208，当用户终端有流量发出时，用户面功能实体根据卫星回传SFC规则及流量引导信息对流量对应的数据包进行处理。
在一个实施例中，用户面功能实体根据卫星回传SFC规则中的流量分类信息对流量 进行区分，将符合的流量按照流量引导信息进行封装转发。
在一个实施例中，流量为上行流量时，用户面功能实体对上行流量内的数据包进行分类，基于流量引导信息对不同数据包进行封装，如在原来数据包基础上构造增加NSH，传输层与网络层封装，从而转发至一条或多条SFP；流量为下行流量时，用户面功能实体识别处理封装的数据包。
上述实施例中，根据实时的业务需求，动态改变终端回传链路SFC相关策略，通过移动网络控制面与卫星网络卫星SFC控制面协商服务功能链策略，使得用户流量可以灵活选择回传链路及SFP，实现为客户流量实时按需提供服务，实现移动网络与卫星网络协同为终端或第三方提供自动化、定制化、多变业务的开展提供技术支持，使得相关业务部署开通运维更加灵活与自动化。
图3示出本公开实施例中一种会话修改处理方法流程图，如图3所示，本公开实施例中提供的会话修改处理方法包括如下步骤：
S302，策略控制功能实体存储用户终端默认或动态PCC规则。
在一个实施例中，策略控制功能实体支持接收、存储、删除卫星回传SFC规则，下发默认或动态PCC规则时携带卫星回传SFC规则。
S304，当用户终端接入创建会话时，用户终端对应的PCC规则触发，且PCC规则包括一条或多条卫星对应的卫星回传SFC规则，策略控制功能实体向会话管理功能实体发送会话关联修改请求。
S306，策略控制功能实体接收会话管理功能实体返回的修改指示。
会话关联修改请求表征需要修改用户终端对应的会话，其中，会话关联修改请求包括策略与计费控制PCC规则。
在一个实施例中，PCC规则包括但不限于以下至少之一：时间、用户终端位置、订购与退订相关流量服务、一条或多条卫星对应的卫星回传SFC规则等。
在一个实施例中，当策略控制功能实体接收到应用功能发送的触发消息、和/或满足触发条件时，用户终端对应的PCC规则被触发。
在一个实施例中，触发条件包括但不限于以下至少之一：时间、用户终端位置、订购与退订相关流量服务等；例如，当时间为A、且用户终端位置为B时，用户终端对应的PCC规则被触发。
上述实施例中，通过策略控制功能实体支持接收、存储、删除卫星回传SFC规则，下发默认或动态PCC规则时携带卫星回传SFC规则，移动网络会话管理功能实体通过与 卫星SFC控制面之间的通信，基于会话的卫星SFC策略，实时为会话粒度的流量选择特定的SFC，从而为回传链路流量提供特定服务组合，为用户的高端定制化需求提供精细化、自动化管理的手段，同时增加了卫星网络功能部署的灵活性，在5G或6G等未来网络场景下，有很好的应用前景。
基于同一发明构思，本公开实施例中还提供了一种卫星服务功能链接入装置，如下面的实施例所述。由于该装置实施例解决问题的原理与上述方法实施例相似，因此该装置实施例的实施可以参见上述方法实施例的实施，重复之处不再赘述。
图4示出本公开实施例中一种卫星服务功能链接入装置示意图，如图4所示，该卫星服务功能链接入装置4包括：接收模块401、确定模块402；
接收模块401，处理方法如下：当用户终端的服务功能路径SFP不满足卫星回传SFC规则时，卫星服务功能链卫星SFC控制面实体接收会话管理功能实体发送的SFC信息。
在一个实施例中，接收模块401包括第一接收模块，处理方法如下：当用户终端接入创建会话时，且用户终端对应的PCC规则被触发时，策略控制功能实体向会话管理功能实体发送包括卫星回传SFC规则会话关联修改请求。
在一个实施例中，接收模块401包括第二接收模块，处理方法如下：策略控制功能实体接收会话管理功能实体返回的修改指示。
在一个实施例中，接收模块401包括第三接收模块，处理方法如下：会话管理功能实体判断当前服务该用户终端的SFP是否满足卫星回传SFC规则，若是，则向策略控制功能实体返回已满足，否则，向卫星SFC控制面实体发送SFC信息。
确定模块402，用于卫星SFC控制面实体根据SFC信息确定目标服务功能路径SFP及目标卫星，其中，目标卫星确保SFC服务时长内每个时刻至少有一条SFC为用户终端服务。
在一个实施例中，确定模块402还用于：卫星SFC控制面实体基于卫星回传SFC规则中的服务功能列表对应的顺序找到SFC服务时长内的一组或多组有序的可以提供对应服务功能的目标卫星，并控制这些目标卫星以及其他可能参与路由交换的卫星使用星间链进行数据传输，确保在SFC服务时长内的每个时刻，至少有一条卫星网络SFC为该用户终端服务，并向会话管理功能实体返回对应的流量引导信息。
在一个实施例中，卫星服务功能链接入装置4还包括：更新模块，用于当目标卫星移动时，根据SFC信息更新目标SFP及目标卫星等满足SFP的需求。
在一个实施例中，卫星服务功能链接入装置4还包括：流量处理模块，处理方法如下： 卫星SFC控制面实体向会话管理功能实体返回目标SFP对应的流量引导信息。
在一个实施例中，卫星服务功能链接入装置4还包括流量处理模块，处理方法如下：卫星SFC控制面实体向会话管理功能实体返回目标SFP对应的流量引导信息；当会话管理功能实体确定流量引导信息中网络服务报头NSH改变时，会话管理功能实体向用户面功能实体发送会话更新修改请求，其中，会话更新修改请求包括流量引导信息；用户面功能实体根据流量引导信息修改会话；当用户终端有流量发出时，用户面功能实体根据卫星回传SFC规则及流量引导信息对流量对应的数据包进行处理。
上述实施例中，移动网络核心网侧引入SFC相关功能，通过与卫星网络或其他承载网络的卫星SFC控制面协商，使得用户面流量通过卫星回传网络时可以灵活选择自动编排的服务功能链，从而达到部署应用加速、HTTP头增强等服务功能时，实现移动网络与卫星网络服务功能链之间的联动，为客户提供实时精细的会话流量管理、调度，提升客户体验，同时增加了卫星网络功能部署的灵活性。
图5示出本公开实施例中一种卫星服务功能链接入消息流程示意图，如图5所示，该卫星服务功能链接入消息流程包括以下步骤：
S502，用户终端接入创建会话后，用户订购了卫星回传流量加速业务，计算机系统将对应用户终端的包含动态SFC规则的动态PCC规则写入策略控制功能实体，策略控制功能实体向会话管理功能实体发送Npcf_SMPolicyControl_UpdateNotify request操作的会话关联修改请求消息，消息中填入对应的卫星回传SFC规则。
例如，卫星回传SFC规则包括：
Traffic Classifier：Class ID＝1，Target IP Prefix＝10.69.0.0，Protocol Type＝[TCP,UDP]，DNN＝ctnet，即流量分类信息包括：类型标识为1，目标IP地址段前缀为10.69.0.0，网络协议类型为TCP(Transmission Control Protocol，传输控制协议)、UDP(User Data Protocol，用户数据报协议)，数据网络名称为ctnet。
SF List Info：Class ID＝1，SF List＝[Acceleration，Interception,Store and Forward]，即服务功能列表包括：类型标识为1，服务列表表征有应用加速Acceleration、中断Interception、存储与转发Store and Forward卫星回传SFC流量服务。
Direction：Up and Down，即上下行指示为上下行。
Access Info：Physics Position＝LEO，Logistic Position＝N3，Control Info＝{Username＝ctnet，Password＝ctnet123，Algorithm＝sha256}，即SFC接入信息包括：SFC网络部署位置为低地轨道、SFC网络逻辑位置为N3，SFC接入信息中用户名为ctnet、密钥为ctnet123、加密 算法为sha256。
Service Duration：36000s，即SFC服务时长为36000s。
S504，会话管理功能实体向策略控制功能实体返回Npcf_SMPolicyControl_UpdateNotify response操作的修改指示响应，指示可以修改。
S506，会话管理功能实体发现此时用户终端的卫星回传SFC流量服务已包括[Acceleration，Interception]，只需增加Store and Forward服务，于是向卫星SFC控制面实体发送SFC修改请求，消息内容包含卫星回传SFC规则SFC Policy，用户终端位置UE Location＝10412。
S508，卫星SFC控制面实体找到一个距离Interception服务最近的Store and Forward服务，可以是同卫星或两个距离最近的卫星，并通过卫星之间的星间链或其它卫星交换建立链接，即确定卫星服务功能路径，最终路由至地面信关站。
S510，卫星SFC控制面实体向会话管理功能实体返回SFC修改响应，消息内容包含流量引导信息，即Forwarding Info＝{NSH，Trans Protocol＝TCP，Network Protocol＝IP}，表征流量引导信息包括NSH、传输协议为TCP、网络协议为IP。
S512，会话管理功能实体判断NSH发生改变，故会话管理功能实体向用户面功能实体发送会话更新修改请求，其中会话更新修改请求为N4 Session Modification Request消息，消息中包含卫星回传SFC规则SFC Policy、流量引导信息Forwarding Info。
在一个实施例中，会话管理功能实体可重选用户面功能实体，并向重选用户面功能实体发送会话更新修改请求。
S514，用户面功能实体基于卫星回传SFC规则SFC Policy、流量引导信息Forwarding Info及其他信息建立或修改会话，并向会话管理功能实体返回会话更新修改响应。
S516，用户终端发送上行数据包，用户面功能实体根据卫星回传SFC规则中的流量分类信息Traffic Classifier对流量进行区分，将符合的流量按照流量引导信息Forwarding Info进行封装转发。
S518，当SFP中的卫星移动后，卫星SFC控制面实体会及时更新SPF中的卫星并满足SFP的需求。
上述实施例中，根据实时的业务需求，动态改变终端回传链路SFC相关策略，通过移动网络控制面与卫星网络卫星SFC控制面协商服务功能链策略，使得用户流量可以灵活选择回传链路及SFP，实现为客户流量实时按需提供服务，实现移动网络与卫星网络协同为终端或第三方提供自动化、定制化、多变业务的开展提供技术支持，使得相关业务部 署开通运维更加灵活与自动化，有利于网络服务的虚拟化、云化。
图6示出本公开实施例中一种空天地场景下移动网络回传链路接入卫星服务功能链的网络架构示意图，如图6所示，该空天地场景下移动网络回传链路接入卫星服务功能链的网络架构包括：用户终端601、基站602、策略控制功能实体603、会话管理功能实体604、用户面功能实体605、卫星SFC控制面实体606、企业服务器607。
接入网包括用户终端601、基站602；用户终端601可以是各种电子设备，包括但不限于智能手机、平板电脑、膝上型便携计算机、台式计算机、可穿戴设备、增强现实设备、虚拟现实设备等。
可选地，不同的用户终端601中安装的应用程序的客户端是相同的，或基于不同操作系统的同一类型应用程序的客户端。基于终端平台的不同，该应用程序的客户端的具体形态也可以不同，比如，该应用程序客户端可以是手机客户端、PC客户端等。
卫星回传网包括：卫星SFC控制面实体606。
核心网包括：策略控制功能实体603、会话管理功能实体604、用户面功能实体605。
外部网络包括：企业服务器607；企业服务器607可以是提供各种服务的服务器，例如对用户利用用户终端601所进行操作的装置提供支持的后台管理服务器。后台管理服务器可以对接收到的请求等数据进行分析等处理，并将处理结果反馈给终端设备。
可选地，企业服务器607可以是独立的物理服务器，也可以是多个物理服务器构成的服务器集群或者分布式系统，还可以是提供云服务、云数据库、云计算、云函数、云存储、网络服务、云通信、中间件服务、域名服务、安全服务、CDN(Content Delivery Network，内容分发网络)、以及大数据和人工智能平台等基础云计算服务的云服务器。
用户终端601基于基站602接入卫星回传网，卫星SFC控制面实体606确定服务功能路径，卫星SFC控制面实体606连接核心网，核心网中的用户面功能实体605连接外部网络的企业服务器607。
在一些实施例中，接入网、卫星回传网、核心网等网络可使用包括超文本标记语言(Hyper Text Mark-up Language，HTML)、可扩展标记语言(Extensible MarkupLanguage，XML)等的技术和/或格式来代表通过网络交换的数据。此外还可以使用诸如安全套接字层(Secure Socket Layer，SSL)、传输层安全(Transport Layer Security，TLS)、虚拟专用网络(Virtual Private Network，VPN)、网际协议安全(Internet ProtocolSecurity，IPsec)等常规加密技术来加密所有或者一些链路。在另一些实施例中，还可以使用定制和/或专用数据通信技术取代或者补充上述数据通信技术。
策略控制功能实体603：支持接收、存储、删除卫星回传SFC规则，存储用户终端601的默认或动态PCC规则、下发默认或动态PCC规则时携带卫星回传SFC规则。当移动核心网为用户终端601创建用户面会话时，如果该用户终端601的PCC规则触发，且PCC规则包含一条或多条卫星回传SFC规则，则由策略控制功能实体603在会话管理关联修改流程中告知会话管理功能实体604，并进行进入后续步骤，否则无需在会话管理关联修改流程中告知会话管理功能实体604。
在一个实施例中，可由应用功能实体发送消息触发PCC规则，也可由策略控制功能实体603根据条件触发PCC规则，包括但不限于时间、用户终端601位置、订购与退订相关流量服务等触发PCC规则。
会话管理功能实体604：支持分析包含卫星回传SFC规则的默认或动态PCC规则，支持与卫星SFC控制面实体606通信，更新卫星SFP、用户终端601位置等必要信息。
判断当前服务该用户终端601的SFP(Service Function Path)服务功能路径是否可以满足该动态PCC规则中的卫星回传SFC规则，如果可以则返回已经满足，如果不能会话管理功能实体604与卫星网络卫星SFC控制面实体606通信，携带内容包括但不限于原有的卫星回传SFC规则，用户终端601位置等信息以及请求更新的动态卫星回传SFC规则，用户终端601位置等信息。
卫星网络卫星SFC控制面实体606基于上述SFC信息决定修改更新已有的SFP，或选择已有其他的SFP或基于需求新建SFP，需要基于卫星回传SFC规则中的服务功能列表对应的顺序找到SFC服务时长内的一组或多组有序的可以提供对应服务功能的目标卫星，并控制这些目标卫星以及其他可能参与路由交换的卫星使用星间链进行数据传输，确保在SFC服务时长内的每个时刻，至少有一条卫星网络SFC为该终端服务，并向会话管理功能实体604返回对应的流量引导信息。
会话管理功能实体604确定所述流量引导信息中网络服务报头NSH改变时，所述会话管理功能实体604向用户面功能实体605发送流量引导信息。
用户面功能实体605：当用户终端601有流量发出时，用户面功能实体605根据动态卫星回传SFC规则参数对流量对应的数据包进行处理；例如，流量为上行流量时，用户面功能实体605对上行流量内的数据包进行分类，基于流量引导信息对不同数据包进行封装，如在原来数据包基础上构造增加NSH，传输层与网络层封装，从而转发至一条或多条SFP；下行流量反之。
上述实施例中，移动网络会话管理功能实体通过与卫星SFC控制面之间的通信，基 于会话的卫星SFC策略，实时为会话粒度的流量选择特定的SFC，从而为回传链路流量提供特定服务组合，为用户的高端定制化需求提供精细化、自动化管理的手段，同时增加了卫星网络功能部署的灵活性，在5G或6G等未来网络场景下，有很好的应用前景。
所属技术领域的技术人员能够理解，本公开的各个方面可以实现为系统、方法或程序产品。因此，本公开的各个方面可以具体实现为以下形式，即：完全的硬件实施方式、完全的软件实施方式(包括固件、微代码等)，或硬件和软件方面结合的实施方式，这里可以统称为“电路”、“模块”或“系统”。
下面参照图7来描述根据本公开的这种实施方式的电子设备700。图7显示的电子设备700仅仅是一个示例，不应对本公开实施例的功能和使用范围带来任何限制。
如图7所示，电子设备700以通用计算设备的形式表现。电子设备700的组件可以包括但不限于：上述至少一个处理单元710、上述至少一个存储单元720、连接不同系统组件(包括存储单元720和处理单元710)的总线730。
其中，所述存储单元存储有程序代码，所述程序代码可以被所述处理单元710执行，使得所述处理单元710执行本说明书上述“示例性方法”部分中描述的根据本公开各种示例性实施方式的步骤。
例如，所述处理单元710可以执行上述方法实施例的如下步骤：当用户终端的服务功能路径SFP不满足卫星回传SFC规则时，卫星服务功能链SFC控制面实体接收会话管理功能实体发送的SFC信息；所述卫星SFC控制面实体根据所述SFC信息确定目标服务功能路径SFP及目标卫星，其中，所述目标卫星确保SFC服务时长内每个时刻至少有一条SFC为所述用户终端服务。
存储单元720可以包括易失性存储单元形式的可读介质，例如随机存取存储单元(RAM)7201和/或高速缓存存储单元7202，还可以进一步包括只读存储单元(ROM)7203。
存储单元720还可以包括具有一组(至少一个)程序模块7205的程序/实用工具7204，这样的程序模块7205包括但不限于：操作系统、一个或者多个应用程序、其它程序模块以及程序数据，这些示例中的每一个或某种组合中可能包括网络环境的实现。
总线730可以为表示几类总线结构中的一种或多种，包括存储单元总线或者存储单元控制器、外围总线、图形加速端口、处理单元或者使用多种总线结构中的任意总线结构的局域总线。
电子设备700也可以与一个或多个外部设备740(例如键盘、指向设备、蓝牙设备等) 通信，还可与一个或者多个使得用户能与该电子设备700交互的设备通信，和/或与使得该电子设备700能与一个或多个其它计算设备进行通信的任何设备(例如路由器、调制解调器等等)通信。这种通信可以通过输入/输出(I/O)接口750进行。并且，电子设备700还可以通过网络适配器760与一个或者多个网络(例如局域网(LAN)，广域网(WAN)和/或公共网络，例如因特网)通信。如图所示，网络适配器760通过总线730与电子设备700的其它模块通信。应当明白，尽管图中未示出，可以结合电子设备700使用其它硬件和/或软件模块，包括但不限于：微代码、设备驱动器、冗余处理单元、外部磁盘驱动阵列、RAID系统、磁带驱动器以及数据备份存储系统等。
通过以上的实施方式的描述，本领域的技术人员易于理解，这里描述的示例实施方式可以通过软件实现，也可以通过软件结合必要的硬件的方式来实现。因此，根据本公开实施方式的技术方案可以以软件产品的形式体现出来，该软件产品可以存储在一个非易失性存储介质(可以是CD-ROM，U盘，移动硬盘等)中或网络上，包括若干指令以使得一台计算设备(可以是个人计算机、服务器、终端装置、或者网络设备等)执行根据本公开实施方式的方法。
在本公开的示例性实施例中，还提供了一种计算机可读存储介质，该计算机可读存储介质可以是可读信号介质或者可读存储介质。其上存储有能够实现本公开上述方法的程序产品。在一些可能的实施方式中，本公开的各个方面还可以实现为一种程序产品的形式，其包括程序代码，当所述程序产品在终端设备上运行时，所述程序代码用于使所述终端设备执行本说明书上述“示例性方法”部分中描述的根据本公开各种示例性实施方式的步骤。
例如，本公开实施例中的程序产品被处理器执行时实现如下步骤的方法：当用户终端的服务功能路径SFP不满足卫星回传SFC规则时，卫星服务功能链SFC控制面实体接收会话管理功能实体发送的SFC信息；所述卫星SFC控制面实体根据所述SFC信息确定目标服务功能路径SFP及目标卫星，其中，所述目标卫星确保SFC服务时长内每个时刻至少有一条SFC为所述用户终端服务。
本公开中的计算机可读存储介质的更具体的例子可以包括但不限于：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机访问存储器(RAM)、只读存储器(ROM)、可擦式可编程只读存储器(EPROM或闪存)、光纤、便携式紧凑磁盘只读存储器(CD-ROM)、光存储器件、磁存储器件、或者上述的任意合适的组合。
在本公开中，计算机可读存储介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了可读程序代码。这种传播的数据信号可以采用多种形式，包括但不限于 电磁信号、光信号或上述的任意合适的组合。可读信号介质还可以是可读存储介质以外的任何可读介质，该可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。
可选地，计算机可读存储介质上包含的程序代码可以用任何适当的介质传输，包括但不限于无线、有线、光缆、RF等等，或者上述的任意合适的组合。
在具体实施时，可以以一种或多种程序设计语言的任意组合来编写用于执行本公开操作的程序代码，所述程序设计语言包括面向对象的程序设计语言—诸如Java、C++等，还包括常规的过程式程序设计语言—诸如“C”语言或类似的程序设计语言。程序代码可以完全地在用户计算设备上执行、部分地在用户设备上执行、作为一个独立的软件包执行、部分在用户计算设备上部分在远程计算设备上执行、或者完全在远程计算设备或服务器上执行。在涉及远程计算设备的情形中，远程计算设备可以通过任意种类的网络，包括局域网(LAN)或广域网(WAN)，连接到用户计算设备，或者，可以连接到外部计算设备(例如利用因特网服务提供商来通过因特网连接)。
应当注意，尽管在上文详细描述中提及了用于动作执行的设备的若干模块或者单元，但是这种划分并非强制性的。实际上，根据本公开的实施方式，上文描述的两个或更多模块或者单元的特征和功能可以在一个模块或者单元中具体化。反之，上文描述的一个模块或者单元的特征和功能可以进一步划分为由多个模块或者单元来具体化。
此外，尽管在附图中以特定顺序描述了本公开中方法的各个步骤，但是，这并非要求或者暗示必须按照该特定顺序来执行这些步骤，或是必须执行全部所示的步骤才能实现期望的结果。附加的或备选的，可以省略某些步骤，将多个步骤合并为一个步骤执行，以及/或者将一个步骤分解为多个步骤执行等。
通过以上实施方式的描述，本领域的技术人员易于理解，这里描述的示例实施方式可以通过软件实现，也可以通过软件结合必要的硬件的方式来实现。因此，根据本公开实施方式的技术方案可以以软件产品的形式体现出来，该软件产品可以存储在一个非易失性存储介质(可以是CD-ROM，U盘，移动硬盘等)中或网络上，包括若干指令以使得一台计算设备(可以是个人计算机、服务器、移动终端、或者网络设备等)执行根据本公开实施方式的方法。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或 惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由所附的权利要求指出。

Claims (13)

  1. 一种卫星服务功能链接入方法，其中，包括：
    当用户终端的服务功能路径SFP不满足卫星回传服务功能链SFC规则时，卫星SFC控制面实体接收会话管理功能实体发送的SFC信息；
    所述卫星SFC控制面实体根据所述SFC信息确定目标SFP及目标卫星，其中，所述目标卫星确保SFC服务时长内每个时刻至少有一条SFC为所述用户终端服务。
  2. 根据权利要求1所述的卫星服务功能链接入方法，其中，所述SFC信息包括卫星回传SFC规则、和/或用户终端位置；所述卫星回传SFC规则包括以下至少之一：接入控制信息、流量分类信息、服务功能列表、上下行指示、SFC服务时长。
  3. 根据权利要求2所述的卫星服务功能链接入方法，其中，还包括：
    所述卫星SFC控制面实体向所述会话管理功能实体返回所述目标SFP对应的流量引导信息；
    当所述会话管理功能实体确定所述流量引导信息中网络服务报头NSH改变时，所述会话管理功能实体向用户面功能实体发送会话更新修改请求，其中，所述会话更新修改请求包括流量引导信息，以便用户面功能实体根据所述流量引导信息修改会话。
  4. 根据权利要求3所述的卫星服务功能链接入方法，其中，所述流量引导信息包括以下至少之一：类型标识、NSH、传输层协议、目标IP地址、目标端口。
  5. 根据权利要求3所述的卫星服务功能链接入方法，其中，还包括：
    当所述用户终端有流量发出时，所述用户面功能实体根据所述卫星回传SFC规则及所述流量引导信息对所述流量对应的数据包进行处理。
  6. 根据权利要求1所述的卫星服务功能链接入方法，其中，还包括：
    当所述用户终端接入创建会话时，且所述用户终端对应的策略与计费控制PCC规则被触发时，策略控制功能实体向所述会话管理功能实体发送会话关联修改请求，其中，所述会话关联修改请求包括PCC规则；
    所述策略控制功能实体接收所述会话管理功能实体返回的修改指示；
    其中，所述PCC规则包括以下至少之一：时间、用户终端位置、订购与退订相关流量服务、一条或多条卫星对应的卫星回传SFC规则。
  7. 根据权利要求6所述的卫星服务功能链接入方法，其中，还包括：
    当所述策略控制功能实体接收到应用功能发送的触发消息、和/或满足触发条件时，所述用户终端对应的PCC规则被触发。
  8. 根据权利要求7所述的卫星服务功能链接入方法，其中，所述触发条件包括以下至少之一：时间、用户终端位置、订购与退订相关流量服务。
  9. 根据权利要求1所述的卫星服务功能链接入方法，其中，还包括：当所述目标卫星移动时，根据所述SFC信息更新所述目标SFP及所述目标卫星。
  10. 一种卫星服务功能链接入装置，其中，位于卫星SFC控制面实体，包括：
    接收模块，设置为当用户终端的服务功能路径SFP不满足卫星回传服务功能链SFC规则时，接收会话管理功能实体发送的SFC信息；
    确定模块，设置为根据所述SFC信息确定目标SFP及目标卫星，其中，所述目标卫星确保SFC服务时长内每个时刻至少有一条SFC为所述用户终端服务。
  11. 一种电子设备，其中，包括：
    处理器；以及
    存储器，用于存储所述处理器的可执行指令；
    其中，所述处理器配置为经由执行所述可执行指令来执行权利要求1～9中任意一项所述卫星服务功能链接入方法。
  12. 一种计算机可读存储介质，其上存储有计算机程序，其中，所述计算机程序被处理器执行时实现权利要求1～9中任意一项所述的卫星服务功能链接入方法。
  13. 一种计算机程序产品，包括计算机程序，所述计算机程序被处理器执行时实现权利要求1～9中任意一项所述的卫星服务功能链接入方法。
PCT/CN2024/091906 2023-07-06 2024-05-09 卫星服务功能链接入方法、装置、电子设备及存储介质 Ceased WO2025007643A1 (zh)

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