WO2022156384A1 - Procédé et appareil de traitement de données, station de base, dispositif de réseau et support de stockage - Google Patents

Procédé et appareil de traitement de données, station de base, dispositif de réseau et support de stockage Download PDF

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Publication number
WO2022156384A1
WO2022156384A1 PCT/CN2021/135414 CN2021135414W WO2022156384A1 WO 2022156384 A1 WO2022156384 A1 WO 2022156384A1 CN 2021135414 W CN2021135414 W CN 2021135414W WO 2022156384 A1 WO2022156384 A1 WO 2022156384A1
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Prior art keywords
pdb
backhaul
delay
smf
delay budget
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PCT/CN2021/135414
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English (en)
Chinese (zh)
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王胡成
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大唐移动通信设备有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a data processing method, an apparatus, a base station, a network device, and a storage medium.
  • the fifth-generation mobile communication technology 5G (fifith-generation) network supports satellite backhaul, and the 5G base station gNB (next generation node B) can connect to the 5G core network 5GC (fifith-generation Core Network) through the satellite link satellite link.
  • the gNB is connected to 5GC from the low earth orbit satellite LEO SAT (Low Earth orbit satellite). Due to the change of the inter-satellite link, the data backhaul delay of the backhaul network changes. This delay change may cause the current QoS parameters to be unsatisfied.
  • the prior art relies on the user plane function network element UPF (User Plane Function) to periodically check the delay of the user plane connection, and then reports it to the session management function network element SMF (Session Management Function) through events.
  • UPF User Plane Function
  • This method cannot detect the delay change between the gNB and the UPF in time, so that the gNB still schedules the air interface transmission according to the original packet delay budget AN PDB, so the end-to-end QoS of the QoS flow cannot be guaranteed. even lead to business interruption.
  • Embodiments of the present disclosure provide a data processing method, apparatus, base station, network device, and storage medium, so as to solve the problem that QoS parameters cannot be adjusted according to changes in the backhaul network in the prior art.
  • an embodiment of the present disclosure provides a data processing method, applied to a base station, including:
  • the determining using satellite to provide backhaul for the PDU session including:
  • the transport layer connection information of the user plane connection of the PDU session it is determined to use the satellite to provide backhaul for the PDU session.
  • the core network packet delay budget CN PDB is based on the general wireless packet service GPRS tunneling protocol GTP-U to send a backhaul request message on a preset tunnel, and is determined according to the time of the received backhaul response message. of;
  • the Internet Internet Control Message Protocol ICMP packet is based on sending the Internet Internet Control Message Protocol ICMP packet to the opposite UPF of the general wireless packet service GPRS tunneling protocol GTP-U path, and is determined according to the receiving time of the ICMP packet.
  • determine whether the core network packet delay budget CN PDB or backhaul delay meets the preset delay budget PDB requirements including:
  • the backhaul delay or the CN PDB determine whether the backhaul delay or the CN PDB is greater than or equal to the packet delay budget PDB of the QoS flow, and if so, determine that the QoS is not satisfied Packet delay budget PDB requirement for flow.
  • an embodiment of the present disclosure further provides a data processing method, which is applied to a session management function network element SMF, including:
  • the notification message carries the CN PDB value for determining the core network packet delay budget; wherein, the notification message is when the base station determines that the CN PDB does not meet the preset delay budget PDB requirement sent;
  • the policy control function network element PCF According to the notification message, request the policy control function network element PCF to update the QoS parameters according to the CN PDB.
  • the CN PDB is based on the general wireless packet service GPRS tunneling protocol GTP-U sending a backhaul request message on a preset tunnel, and is determined according to the time of the received backhaul response message;
  • an embodiment of the present disclosure further provides a data processing method, which is applied to a session management function network element SMF, including:
  • the determining of the satellite as the return transmission includes:
  • the transport layer connection information of the N3 tunnel of the protocol data unit PDU session it is determined to use the satellite to provide backhaul for the PDU session;
  • the transport layer connection information of the user plane connection of the PDU session it is determined to use the satellite to provide backhaul for the PDU session.
  • an embodiment of the present disclosure further provides a data processing method, which is applied to a user plane function network element UPF, including:
  • the SMF determines whether it satisfies the core network packet delay budget CN PDB or backhaul delay carried in the backhaul response message.
  • the preset delay budget PDB requirements if not satisfied, request the policy control function network element PCF to update the QoS parameters according to the CN PDB.
  • the SMF determines whether the preset delay budget PDB requirement is met according to the core network packet delay budget CN PDB or the return delay carried in the return response message, including:
  • the backhaul delay or the CN PDB determine whether the backhaul delay or the CN PDB is greater than or equal to the packet delay budget PDB of the QoS flow, and if so, determine that the QoS is not satisfied Packet delay budget PDB requirement for flow.
  • an embodiment of the present disclosure further provides a data processing apparatus, applied to a base station, including:
  • the first processing module is configured to determine whether the core network packet delay budget CN PDB or the return delay meets the preset requirements after the session management function network element SMF indicates or determines that the satellite is used to provide backhaul for the protocol data unit PDU session. Delay budget PDB requirements, if not satisfied, send a notification message carrying the value of the CN PDB to the SMF serving the PDU session, the notification message is used to notify the SMF to request the policy control function network element PCF according to The CN PDB updates QoS parameters.
  • an embodiment of the present disclosure further provides a data processing apparatus, which is applied to a session management function network element SMF, including:
  • the second receiving module is configured to receive a notification message sent by the base station, where the notification message carries the CN PDB value for determining the packet delay budget of the core network; wherein, the notification message is that the base station determines that the CN PDB is not satisfied Sent when the preset delay budget PDB is required;
  • the second processing module is configured to, according to the notification message, request the policy control function network element PCF to update the QoS parameters according to the CN PDB.
  • an embodiment of the present disclosure further provides a data processing apparatus, which is applied to a session management function network element SMF, including:
  • the second sending module is configured to send an indication message to the base station or the user plane function network element UPF after determining that the satellite is used as the backhaul, where the indication message is used to instruct the base station or the UPF to send a backhaul request message;
  • the third processing module is used to determine whether the core network packet delay budget CN PDB or backhaul delay meets the preset delay budget PDB requirements, if not, requesting the policy control function network element PCF according to the CN PDB , to update the QoS parameters.
  • an embodiment of the present disclosure further provides a data processing apparatus, which is applied to a user plane function network element UPF, including:
  • a third sending module configured to send a return request message after receiving the instruction message sent by the session management function network element SMF;
  • a fourth receiving module configured to receive a return response message in response to the return request message
  • the fourth processing module is configured to send the backhaul response message to the SMF, and the SMF determines whether to The preset delay budget PDB requirements are met, and if not, the policy control function network element PCF is requested to update the QoS parameters according to the CN PDB.
  • an embodiment of the present disclosure further provides a base station, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the following steps when executing the computer program:
  • an embodiment of the present disclosure further provides a session management function network element SMF, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program
  • SMF session management function network element
  • the notification message carries the CN PDB value for determining the core network packet delay budget; wherein, the notification message is when the base station determines that the CN PDB does not meet the preset delay budget PDB requirement sent;
  • the policy control function network element PCF is requested to update the QoS parameters according to the CN PDB.
  • an embodiment of the present disclosure further provides a session management function network element SMF, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer
  • SMF session management function network element
  • an embodiment of the present disclosure further provides a user plane functional network element UPF, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer
  • UPF user plane functional network element
  • the SMF determines whether it satisfies the core network packet delay budget CN PDB or backhaul delay carried in the backhaul response message.
  • the preset delay budget PDB requirements if not satisfied, request the policy control function network element PCF to update the QoS parameters according to the CN PDB.
  • an embodiment of the present disclosure further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the above-mentioned first The steps of the data processing method described in one aspect or the second aspect or the third aspect or the fourth aspect.
  • the data processing method, device, base station, network device, and storage medium provided by the embodiments of the present disclosure determine the core network packet delay after the session management function network element SMF instructs or determines to use satellite to provide backhaul for the protocol data unit PDU session. Whether the budget CN PDB or return delay meets the preset delay budget PDB requirements, if not, a notification message carrying the CN PDB value is sent to the SMF serving the PDU session, and the notification message is used to notify the SMF to request policy control
  • the functional network element PCF updates the QoS parameters according to the CN PDB.
  • the embodiments of the present disclosure perform backhaul delay detection according to changes in backhaul connections, and trigger QoS modification in time, thereby avoiding service interruption.
  • Figure 1 is a schematic diagram of the deployment of a 5G network when a satellite is used as a backhaul;
  • FIG. 2 is a schematic flowchart of the backhaul connection between UPF and SMF;
  • FIG. 5 is a flowchart of steps applied to a session management function network element SMF provided by an embodiment of the present disclosure
  • FIG. 6 is a flowchart of another step applied to a session management function network element SMF provided by an embodiment of the present disclosure
  • FIG. 7 is a flowchart of steps applied to a user plane function network element UPF provided by an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of SMF notifying gNB to enable delay detection provided by an embodiment of the present disclosure
  • FIG. 9 is a schematic diagram of a gNB detecting user plane delay provided by an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of SMF detecting user plane delay provided by an embodiment of the present disclosure.
  • FIG. 11 is a block diagram of a module of a data processing apparatus applied to a base station provided by an embodiment of the present disclosure
  • FIG. 12 is a block diagram of a module of a data processing apparatus applied to a session management function network element SMF provided by an embodiment of the present disclosure
  • FIG. 13 is a block diagram of a module of another data processing apparatus applied to a session management function network element SMF provided by an embodiment of the present disclosure
  • FIG. 14 is a block diagram of a module of a data processing apparatus applied to a user plane function network element UPF provided by an embodiment of the present disclosure
  • 15 is a schematic structural diagram of a base station provided by an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a session management function network element SMF provided by an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of a user plane function network element UPF provided by an embodiment of the present disclosure.
  • the 5G network when the satellite is used as the backhaul, the 5G network is deployed as follows.
  • the 5G base station gNB and the access and mobility management function unit AMF (Access and Mobility Management Function) are connected through the satellite chain.
  • the link establishes the association of the NG interface.
  • the satellite link is still transparent to the protocol of the mobile communication network. Since the gNB may be mobile, such as vehicle, airborne, etc., it may happen that the gNB is connected to different satellites at different times. At this time, a new transport layer connection needs to be established between the gNB and the 5GC.
  • LEO Low Earth orbit
  • MEO Medium Earth orbit
  • the user plane function unit UPF (User Plane Function) can notify the session management function unit SMF ( Session Management Function).
  • SMF Session Management Function
  • the UPF reports the QoS limitation to the SMF through the N4Report process.
  • SMF performs UPF selection and QoS parameter adjustment according to QoS limitations.
  • the UPF can also report the QoS limitation on its GTP-U path to the SMF when it establishes an N4 association with the SMF. QoS limitation is notified during the N4 Association Update process.
  • an embodiment of the present disclosure provides a data processing method, which determines the core network packet delay budget CN PDB according to the session management function network element SMF instruction or after determining to use satellite to provide backhaul for the protocol data unit PDU session.
  • the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband Code Division Multiple Access
  • General packet Wireless service general packet Radio service
  • GPRS general packet Wireless service
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • time division duplex time division duplex
  • TDD Time division duplex
  • the terminal device involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the name of the terminal device may be different.
  • the terminal device may be called user equipment (User Equipment, UE).
  • Wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via a radio access network (Radio Access Network, RAN).
  • RAN Radio Access Network
  • "telephone) and computers with mobile terminal equipment eg portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • Wireless terminal equipment may also be referred to as system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in the embodiments of the present disclosure.
  • the terminal device and other network devices eg, core network device, access network device (ie, base station)
  • the terminal device is also regarded as a kind of network device.
  • the network device involved in the embodiments of the present disclosure may be a base station, and the base station may include a plurality of cells providing services for the terminal, or may be a CU (Central Unit, centralized control unit) or a DU (Distributed Unit, distributed unit).
  • the network device may also be called an access point, or may be a device in the access network that communicates with wireless terminal devices through one or more sectors on the air interface, or other names.
  • the network device can be used to exchange received air frames with Internet Protocol (IP) packets, and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet. Protocol (IP) communication network.
  • IP Internet Protocol
  • the network devices may also coordinate attribute management for the air interface.
  • the network device involved in the embodiments of the present disclosure may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA). ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a long term evolution (LTE) system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in 5G network architecture (next generation system), or Home evolved Node B (HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiments of the present disclosure.
  • network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, which may also be geographically separated.
  • a flowchart of steps of a data processing method applied to a base station provided by an embodiment of the present disclosure, the method includes the following steps:
  • Step 101 Determine whether the core network packet delay budget CN PDB or backhaul delay meets the preset delay budget PDB after being instructed by the session management function network element SMF or determined to use satellite to provide backhaul for the protocol data unit PDU session If not satisfied, send a notification message carrying the value of the CN PDB to the SMF serving the PDU session, where the notification message is used to notify the SMF to request the policy control function network element PCF according to the CN PDB , to update the QoS parameters.
  • the SMF can determine that the user plane of the PDU session is returned via satellite according to the gNB information of the serving terminal equipment UE, such as the gNB ID, return type indication, etc.; Alternatively, after the establishment of the PDU session is completed, it is determined that the user plane of the PDU session is returned via satellite according to the tunnel information (IP address) of the downlink N3 tunnel allocated by the gNB for the PDU session. After the SMF determines that the PDU session is backhauled by the satellite, it can enable the Notification control mechanism for the QoS flow in the PDU session, and/or notify the base station to send a backhaul request message.
  • the SMF can enable the Notification control mechanism for the QoS flow in the PDU session, and/or notify the base station to send a backhaul request message.
  • the gNB determines that the serving satellite has changed, it performs backhaul delay detection with the user plane functional unit UPF. Specifically, the gNB sends back to the connected UPF or the configured gateway node. Send a request message to determine the core network packet delay budget CN PDB of each QoS flow in the PDU session.
  • the base station receives a backhaul response message sent by the core network in response to the backhaul request message.
  • the purpose is to detect the user plane delay of the PDU session to determine the core network packet delay budget CN PDB of each QoS flow in the PDU session.
  • the UE initiates the establishment of a PDU session, and the gNB serving the UE is connected to the 5GC through satellite backhaul.
  • the core network packet delay budget CN PDB or the return delay carried in the return response message it is judged whether it can meet the packet delay budget PDB requirements of each quality of service flow QoS flow served by the base station, if not. , then send a notification message carrying the value of the CN PDB to the session management function network element SMF serving the PDU session, where the notification message is used to notify the SMF to request the policy control function network element PCF according to the CN PDB , and update the QoS parameters of each QoS flow.
  • the core network packet delay budget CN PDB carried in the backhaul response message is a backhaul request message sent on a preset tunnel based on the general wireless packet service GPRS tunneling protocol GTP-U, and according to the received backhaul
  • the time of the response message is determined or the Internet Control Message Protocol ICMP packet is sent to the opposite end UPF of the GPRS Tunneling Protocol GTP-U path of the general wireless packet service, and it is determined according to the receiving time of the ICMP packet.
  • the gNB determines the user plane CN PDB according to the detected backhaul delay, and then judges whether it can meet the current packet delay budget PDB requirements of each quality of service flow QoS flow according to the CN PDB. If not, it will send a notification. message to SMF.
  • the notification message carries the CN PDB, so that the SMF reports the CN PDB to the PCF according to the message, and triggers the process of updating the QoS parameters of each QoS flow.
  • the QoS parameters include at least one of the following:
  • the session management function network element SMF instruction or after determining to use satellite to provide backhaul for the protocol data unit PDU session determine the core network packet delay budget CN PDB or backhaul delay, whether it is Meet the preset delay budget PDB requirements, if not, send a notification message carrying the CN PDB value to the SMF serving the PDU session, where the notification message is used to notify the SMF to request a policy control function network
  • the meta PCF updates the QoS parameters according to the CN PDB.
  • the embodiments of the present disclosure perform backhaul delay detection according to changes in backhaul connections, and trigger QoS modification in time, thereby avoiding service interruption.
  • the determining to use satellite to provide backhaul for the PDU session includes:
  • the transport layer connection information of the user plane connection of the PDU session it is determined to use the satellite to provide backhaul for the PDU session.
  • the base station determines that the PDU session uses satellite as the backhaul according to the transport layer connection of the N3 tunnel of the PDU session, or after the backhaul connection is switched, the base station determines according to the The transport layer connection information of the transport layer connection of the user plane connection of the PDU session determines that the PDU session uses satellite as a backhaul.
  • the transport layer connection information may be an IP address or port of a base station connected to the transport layer, or a wireless transmission technology.
  • the core network packet delay budget CN PDB is based on the general wireless packet service GPRS tunneling protocol GTP-U to send a return request message on a preset tunnel, and according to the received The time of the returned response message is determined;
  • the Internet Internet Control Message Protocol ICMP packet is based on sending the Internet Internet Control Message Protocol ICMP packet to the opposite UPF of the general wireless packet service GPRS tunneling protocol GTP-U path, and is determined according to the receiving time of the ICMP packet.
  • the backhaul request message is sent on the preset tunnel, for example, in the N3 tunnel (N3 tunnel ), and then calculate the core network packet delay budget CN PDB according to the time of receiving the echo response (echo response).
  • the base station may not rely on the GTP-U tunnel management message when performing backhaul delay detection, and may use other means to detect the backhaul delay.
  • gNB uses non-3rd Generation Partnership Project 3GPP means to detect backhaul delay, such as sending Internet Control Message Protocol (ICMP) packets to the UPF at the opposite end of the GTP-U path to detect round-trip delay on the transmission path.
  • ICMP Internet Control Message Protocol
  • the core network packet delay budget CN PDB is determined according to the receiving time of the ICMP packet.
  • the determining whether the core network packet delay budget CN PDB or backhaul delay meets the preset delay budget PDB requirements including:
  • the backhaul delay or the CN PDB determine whether the backhaul delay or the CN PDB is greater than or equal to the packet delay budget PDB of the QoS flow, and if so, determine that the QoS is not satisfied Packet delay budget PDB requirement for flow.
  • a flowchart of steps of a data processing method applied to a session management function network element SMF provided by an embodiment of the present disclosure, the method includes the following steps:
  • Step 201 Receive a notification message sent by the base station, where the notification message carries the CN PDB value for determining the core network packet delay budget; wherein, the notification message is that the base station determines that the CN PDB does not meet the preset delay Sent when requested by the Budget PDB;
  • CN PDB is determined by performing backhaul delay detection between the base station and the user plane functional network element UPF when the base station determines that the serving satellite changes.
  • Step 202 Request the policy control function network element PCF to update QoS parameters according to the CN PDB according to the notification message.
  • the SMF initiates the SM policy update process, and requests the PCF to update the QoS parameters of the QoS flow.
  • the PCF may need to negotiate with the application layer and request the application function unit AF (Application Function) to update its QoS requirements according to the delay characteristics of the transmission path.
  • the PCF updates the QoS parameters according to the QoS requirements of the application layer to adapt to the delay characteristics of the backhaul connection, and triggers the QoS parameter modification process.
  • the session management function network element SMF instruction or after determining to use satellite to provide backhaul for the protocol data unit PDU session determine the core network packet delay budget CN PDB or backhaul delay, whether it is Meet the preset delay budget PDB requirements, if not, send a notification message carrying the CN PDB value to the SMF serving the PDU session, where the notification message is used to notify the SMF to request a policy control function network
  • the meta PCF updates the QoS parameters according to the CN PDB.
  • the embodiments of the present disclosure perform backhaul delay detection according to changes in backhaul connections, and trigger QoS modification in time, thereby avoiding service interruption.
  • the CN PDB sends a backhaul request message on a preset tunnel based on the General Radio Packet Service GPRS Tunneling Protocol GTP-U, and sends a backhaul request message according to the received backhaul response message. time fixed;
  • the Internet Internet Control Message Protocol ICMP packet is based on sending the Internet Internet Control Message Protocol ICMP packet to the opposite UPF of the general wireless packet service GPRS tunneling protocol GTP-U path, and is determined according to the receiving time of the ICMP packet.
  • the base station when it performs the backhaul delay detection, it sends the backhaul request message on the preset tunnel based on the general wireless packet service GPRS tunneling protocol GTP-U, for example, in the N3 tunnel (N3 tunnel).
  • GTP-U general wireless packet service GPRS tunneling protocol
  • the echo request packet is sent on the upper end, and then the core network packet delay budget CN PDB is calculated according to the time when the echo response (echo response) is received.
  • the base station when the base station performs the backhaul delay detection, it may not rely on the GTP-U tunnel management message, but adopt other means to detect the backhaul delay.
  • gNB uses non-3rd Generation Partnership Project 3GPP means to detect backhaul delay, such as sending Internet Control Message Protocol (ICMP) packets to the UPF at the opposite end of the GTP-U path to detect round-trip delay on the transmission path.
  • ICMP Internet Control Message Protocol
  • the core network packet delay budget CN PDB is determined according to the receiving time of the ICMP packet.
  • a flowchart of steps of a data processing method applied to a session management function network element SMF provided by an embodiment of the present disclosure, the method includes the following steps:
  • Step 301 After determining that the satellite is used as the backhaul, send an indication message to the base station or the user plane function network element UPF, where the indication message is used to instruct the base station or the UPF to send a backhaul request message;
  • the SMF can determine that the user plane of the PDU session is sent back via satellite according to the gNB information of the serving terminal equipment UE, such as the gNB ID, return type indication, etc.; or, in the PDU session After the establishment is completed, according to the tunnel information (IP address) of the downlink N3 tunnel allocated by the gNB for the PDU session, it is determined that the user plane of the PDU session is sent back through the satellite.
  • the gNB information of the serving terminal equipment UE such as the gNB ID, return type indication, etc.
  • IP address IP address
  • the SMF When the SMF determines that the PDU session is backhauled through the satellite, it can enable the Notification control mechanism for the QoS flow in the PDU session, and/or notify the base station or the user plane function network element UPF to send an indication message, where the indication message is used to indicate The base station or UPF sends a backhaul request message.
  • the SMF receives the echo response message sent by the core network in response to the echo request message.
  • the purpose is to detect the user plane delay of the PDU session to determine the core network packet delay budget CN PDB of each QoS flow in the PDU session.
  • the SMF may instruct the base station to perform backhaul delay detection, and after the detection, the base station sends a notification message carrying the CN PDB value to the SMF.
  • the SMF can also instruct the UPF serving the PDU session to detect the transmission delay of the user plane path and report the delay value through the N4 interface. UPF can perform delay detection through the echo reque/response process.
  • the SMF Since the base station serves multiple PDU sessions, for the UPF serving different PDU sessions, the SMF will indicate the transmission delay of its probing path. After detection, each UPF reports the backhaul delay between it and the gNB to the SMF. The SMF then receives the CN PDB value or backhaul delay sent by the base station or UPF, and determines the CN PDB packet delay budget of the core network.
  • Step 302 Determine whether the core network packet delay budget CN PDB or backhaul delay meets the preset delay budget PDB requirements, if not, request the policy control function network element PCF to update QoS parameters according to the CN PDB .
  • the SMF can determine the user plane CN PDB according to the detected backhaul delay, and then judge whether it can meet the current packet delay budget PDB requirements of each quality of service flow QoS flow according to the CN PDB.
  • the CN PDB is reported to trigger the process of updating the QoS parameters of each QoS flow.
  • the session management function network element SMF instruction or after determining to use satellite to provide backhaul for the protocol data unit PDU session determine the core network packet delay budget CN PDB or backhaul delay, whether it is Meet the preset delay budget PDB requirements, if not, send a notification message carrying the CN PDB value to the SMF serving the PDU session, where the notification message is used to notify the SMF to request a policy control function network
  • the meta PCF updates the QoS parameters according to the CN PDB.
  • the embodiments of the present disclosure perform backhaul delay detection according to changes in backhaul connections, and trigger QoS modification in time, thereby avoiding service interruption.
  • the determining of the satellite as the return transmission includes:
  • the transport layer connection information of the N3 tunnel of the protocol data unit PDU session it is determined to use the satellite to provide backhaul for the PDU session;
  • the transport layer connection information of the user plane connection of the PDU session it is determined to use the satellite to provide backhaul for the PDU session.
  • the base station determines that the PDU session uses satellite as the backhaul according to the transport layer connection of the N3 tunnel of the PDU session, or after the backhaul connection is switched, the base station determines according to the The transport layer connection of the PDU Session user plane connection determines that the PDU Session uses satellite as backhaul.
  • a flowchart of steps of a data processing method applied to a user plane function network element UPF provided by an embodiment of the present disclosure, the method includes the following steps:
  • Step 401 After receiving the instruction message sent by the session management function network element SMF, send a return request message;
  • the UPF after receiving the instruction message sent by the SMF through the N4 interface for detecting the transmission delay of the user plane path, the UPF sends a return request message.
  • the UPF receives the echo response message sent by the core network in response to the echo request message.
  • the purpose is to detect the user plane delay of the PDU session to determine the core network packet delay budget CN PDB of each QoS flow in the PDU session.
  • Step 402 Send the backhaul response message corresponding to the backhaul request message to the SMF, and the SMF budget CN PDB or backhaul delay according to the core network packet delay carried in the backhaul response message, Determine whether the preset delay budget PDB requirements are met, and if not, request the policy control function network element PCF to update the QoS parameters according to the CN PDB.
  • the UPF sends the detected backhaul delay to the SMF, and the SMF determines the user plane CN PDB according to the detected backhaul delay, and then judges whether the packets of the current QoS flow can be satisfied according to the CN PDB.
  • Delay budget PDB requirements if not satisfied, report CN PDB to PCF, triggering the process of updating QoS parameters of each QoS flow.
  • the UPF performs backhaul delay detection between the base station and the user plane functional network element UPF according to the instruction message sent by the SMF, and reports the backhaul delay between it and the base station to the SMF. transmission delay.
  • the session management function network element SMF instruction or after determining to use satellite to provide backhaul for the protocol data unit PDU session determine the core network packet delay budget CN PDB or backhaul delay, whether it is Meet the preset delay budget PDB requirements, if not, send a notification message carrying the CN PDB value to the SMF serving the PDU session, where the notification message is used to notify the SMF to request a policy control function network
  • the meta PCF updates the QoS parameters according to the CN PDB.
  • the embodiments of the present disclosure perform backhaul delay detection according to changes in backhaul connections, and trigger QoS modification in time, thereby avoiding service interruption.
  • the SMF determines whether the preset delay budget PDB is satisfied according to the core network packet delay budget CN PDB or the return delay carried in the return response message.
  • requirements including:
  • the backhaul delay or the CN PDB determine whether the backhaul delay or the CN PDB is greater than or equal to the packet delay budget PDB of the QoS flow, and if so, determine that the QoS is not satisfied Packet delay budget PDB requirement for flow.
  • the SMF notifies the base station gNB to enable notification control and delay detection. Proceed as follows:
  • the UE initiates the establishment of a PDU session, and the gNB serving the UE connects to the 5GC through satellite backhaul.
  • the SMF can determine the user plane of the PDU session via satellite backhaul according to the gNB information of the serving UE, such as gNB ID, return type indication, etc.; or, after the PDU session establishment is completed, according to The tunnel information (IP address) of the downlink N3 tunnel allocated by the gNB for the PDU session determines that the user plane of the PDU session is sent back via satellite.
  • the gNB information of the serving UE such as gNB ID, return type indication, etc.
  • the SMF determines that the PDU session is sent back via the satellite, it can enable the Notification control mechanism for the QoS flow in the PDU session; and/or notify the base station to perform user plane delay detection of the PDU session and report it to the SMF (herein referred to as the SMF). notification mechanism).
  • the gNB starts the delay detection for the user plane path of the PDU session, for example, sends an echo request packet on N3tunnel, and then calculates the user plane path delay according to the time when the echo response is received.
  • the base station gNB detects the user plane delay through the GTP-U tunnel management message. Proceed as follows:
  • the gNB needs to establish a connection to the control plane and user plane of the 5GC through the new satellite.
  • the delay detection is performed again for each user plane path between it and the core network, that is, each GTP-U path, that is, the echo request packet and Receive echo response.
  • the gNB feeds back the transmission delay of the backhaul path, that is, the transmission delay of the GTP-U path, to the SMF serving the QoS flow.
  • the gNB reports the transmission delay change of the backhaul path to the SMF.
  • the SMF After receiving the transmission delay of the transmission path fed back by the gNB, the SMF initiates the SM policy update process and requests the PCF to update the QoS parameters of the QoS flow.
  • the PCF may need to negotiate with the application layer and request the AF to update its QoS requirements according to the delay characteristics of the transmission path.
  • the PCF updates the QoS parameters according to the QoS requirements of the application layer to adapt to the delay characteristics of the backhaul connection, and triggers the QoS parameter modification process.
  • the base station gNB detects the user plane delay through non-3GPP means (eg, ICMP message).
  • non-3GPP means eg, ICMP message.
  • the gNB may not rely on the GTP-U tunnel management message, but use other means to detect the delay, that is, in step 2 of the second embodiment, the gNB Use non-3GPP means to detect the delay, such as sending an ICMP packet to the UPF of the opposite end of the GTP-U path to detect the round-trip delay on the transmission path.
  • the gNB determines that the CN PDB is half of the detected round-trip delay, and the subsequent steps are the same as those of the second embodiment.
  • the steps for SMF to detect the user plane delay are:
  • the gNB needs to establish a connection to the control plane and user plane of the 5GC through the new satellite.
  • the gNB Due to the change of the transmission path, the gNB initiates a path switching process for each UE.
  • the SMF determines whether it is necessary to perform delay detection on the N3 tunnel of the PDU session again. If the IP address determines that the gNB uses satellite backhaul, the delay reprobing is enabled.
  • the SMF instructs the UPF serving the PDU session to detect the transmission delay of the user plane path through the N4 interface and report the delay value.
  • UPF can perform delay detection through the echo reque/response process.
  • the SMF Since the gNB serves multiple PDU sessions, the SMF will indicate the transmission delay of its probing path for UPFs serving different PDU sessions.
  • Each UPF reports the transmission delay between it and the gNB to the SMF.
  • the SMF determines that the transmission delay before the UPF of the gNB cannot meet the QoS requirements of some QoS flows in the PDU session, it initiates the SM policy modification process for these QoS flows.
  • the PCF may need to negotiate with the application layer and request the AF to update its QoS requirements according to the delay characteristics of the transmission path.
  • the PCF updates the QoS parameters according to the QoS requirements of the application layer to adapt to the delay characteristics of the backhaul connection.
  • the SMF determines the transmission delay as a new CN PDB and sends it to the gNB.
  • the base station gNB determines that the serving satellite has changed, it performs transmission delay detection to the UPF or notifies the core network to perform transmission delay detection between the gNB and the UPF, and the gNB determines that the detected
  • the transmission delay is determined as the CN PDB corresponding to the 5QI of the QoS flow it serves, and the CN PDB is used to calculate the AN PDB corresponding to the 5QI of the QoS flow.
  • the 5QI may be a QoS parameter received from the core network before the serving satellite changes; or a new QoS parameter received from the core network after the serving satellite changes.
  • the new CN PDB is the SMF according to the gNB and UPF The transmission delay between them is determined.
  • the embodiment of the present disclosure can accurately set the CN PDB, and trigger QoS modification in time to avoid service interruption.
  • FIG. 11 it is a block diagram of a data processing apparatus applied to a base station in an embodiment of the present disclosure, and the apparatus includes:
  • the first processing module 11 is configured to determine whether the core network packet delay budget CN PDB or the return delay meets the pre-determined value after the session management function network element SMF indicates or determines that the satellite is used to provide backhaul for the protocol data unit PDU session. Set the delay budget PDB requirement, if not satisfied, send a notification message carrying the value of the CN PDB to the SMF serving the PDU session, where the notification message is used to notify the SMF to request the policy control function network element PCF According to the CN PDB, the QoS parameters are updated.
  • the determining to use satellite to provide backhaul for the PDU session includes:
  • the transport layer connection information of the user plane connection of the PDU session it is determined to use the satellite to provide backhaul for the PDU session.
  • the core network packet delay budget CN PDB is based on the general wireless packet service GPRS tunneling protocol GTP-U to send a return request message on a preset tunnel, and according to the received The time of the returned response message is determined;
  • the Internet Internet Control Message Protocol ICMP packet is based on sending the Internet Internet Control Message Protocol ICMP packet to the opposite UPF of the general wireless packet service GPRS tunneling protocol GTP-U path, and is determined according to the receiving time of the ICMP packet.
  • the determining whether the core network packet delay budget CN PDB or backhaul delay meets the preset delay budget PDB requirements including:
  • the backhaul delay or the CN PDB determine whether the backhaul delay or the CN PDB is greater than or equal to the packet delay budget PDB of the QoS flow, and if so, determine that the QoS is not satisfied Packet delay budget PDB requirement for flow.
  • this device can implement all the method steps of the data processing method embodiment applied to the base station and can achieve the same technical effect, which will not be repeated here.
  • a module block diagram of a data processing apparatus applied to a session management function network element SMF provided by an embodiment of the present disclosure, the apparatus includes:
  • the second receiving module 21 is configured to receive a notification message sent by the base station, where the notification message carries the CN PDB value for determining the packet delay budget of the core network; wherein, the notification message indicates that the base station determines that the CN PDB is not Sent when the preset delay budget PDB requirements are met;
  • the second processing module 22 is configured to, according to the notification message, request the policy control function network element PCF to update the QoS parameters according to the CN PDB.
  • the CN PDB sends a backhaul request message on a preset tunnel based on the General Radio Packet Service GPRS Tunneling Protocol GTP-U, and sends a backhaul request message according to the received backhaul response message. time fixed;
  • the Internet Internet Control Message Protocol ICMP packet is based on sending the Internet Internet Control Message Protocol ICMP packet to the opposite UPF of the general wireless packet service GPRS tunneling protocol GTP-U path, and is determined according to the receiving time of the ICMP packet.
  • this device can implement all the method steps of the data processing method embodiment applied to the base station and can achieve the same technical effect, which will not be repeated here.
  • a module block diagram of a data processing apparatus applied to a session management function network element SMF provided by an embodiment of the present disclosure, the apparatus includes:
  • the second sending module 31 is configured to send an indication message to the base station or the user plane function network element UPF after determining that the satellite is used as the backhaul, where the indication message is used to instruct the base station or the UPF to send a backhaul request message;
  • the third processing module 33 is configured to determine whether the core network packet delay budget CN PDB or backhaul delay meets the preset delay budget PDB requirements, and if not, requesting the policy control function network element PCF according to the CN PDB PDB, update QoS parameters.
  • the determining of the satellite as the return transmission includes:
  • the transport layer connection information of the N3 tunnel of the protocol data unit PDU session it is determined to use the satellite to provide backhaul for the PDU session;
  • the transport layer connection information of the user plane connection of the PDU session it is determined to use the satellite to provide backhaul for the PDU session.
  • this device can implement all the method steps of the data processing method embodiment applied to the base station and can achieve the same technical effect, which will not be repeated here.
  • a module block diagram of a data processing apparatus applied to a user plane function network element UPF provided by an embodiment of the present disclosure, the apparatus includes:
  • the third sending module 41 is configured to send a return request message after receiving the instruction message sent by the session management function network element SMF;
  • the fourth processing module 43 is configured to send a backhaul response message corresponding to the backhaul request message to the SMF, where the SMF is based on the core network packet delay budget CN PDB or CN PDB carried in the backhaul response message. Return delay, determine whether the preset delay budget PDB requirements are met, and if not, request the policy control function network element PCF to update QoS parameters according to the CN PDB.
  • the SMF determines whether the preset delay budget PDB is satisfied according to the core network packet delay budget CN PDB or the return delay carried in the return response message.
  • requirements including:
  • the backhaul delay or the CN PDB determine whether the backhaul delay or the CN PDB is greater than or equal to the packet delay budget PDB of the QoS flow, and if so, determine that the QoS is not satisfied Packet delay budget PDB requirement for flow.
  • this device can implement all the method steps of the data processing method embodiment applied to the base station and can achieve the same technical effect, which will not be repeated here.
  • FIG. 15 is a schematic structural diagram of a base station provided by an embodiment of the present disclosure, including a memory 1520 , a transceiver 1500 , and a processor 1510 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1510 and various circuits of memory represented by memory 1520 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 1500 may be a number of elements, including a transmitter and a receiver, that provide means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 1510 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1510 in performing operations.
  • the processor 1510 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (Complex Programmable Logic Device). , CPLD), the processor can also use a multi-core architecture.
  • CPU central processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • CPLD complex programmable logic device
  • the memory 1520 is used to store computer programs; the transceiver 1500 is used to send and receive data under the control of the processor; the processor 1510 is used to read the computer program in the memory and perform the following operations:
  • the determining to use satellite to provide backhaul for the PDU session includes:
  • the transport layer connection information of the user plane connection of the PDU session it is determined to use the satellite to provide backhaul for the PDU session.
  • the core network packet delay budget CN PDB is based on the general wireless packet service GPRS tunneling protocol GTP-U to send a return request message on a preset tunnel, and according to the received The time of the returned response message is determined;
  • the Internet Internet Control Message Protocol ICMP packet is based on sending the Internet Internet Control Message Protocol ICMP packet to the opposite UPF of the general wireless packet service GPRS tunneling protocol GTP-U path, and is determined according to the receiving time of the ICMP packet.
  • determining whether the core network packet delay budget CN PDB or backhaul delay meets the preset delay budget PDB requirements including:
  • the backhaul delay or the CN PDB determine whether the backhaul delay or the CN PDB is greater than or equal to the packet delay budget PDB of the QoS flow, and if so, determine that the QoS is not satisfied Packet delay budget PDB requirement for flow.
  • the base station provided by the embodiment of the present disclosure can implement all the method steps of the data processing method embodiment applied to the base station and achieve the same technical effect, which is not repeated here.
  • FIG. 16 is one of the schematic structural diagrams of a session management function network element SMF provided by an embodiment of the present disclosure, including a memory 1620 , a transceiver 1600 , and a processor 1610 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1610 and various circuits of memory represented by memory 1620 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 1600 may be multiple elements, ie, including transmitters and receivers, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 1610 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1610 in performing operations.
  • the processor 1610 can be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (Complex Programmable Logic Device). , CPLD), the processor can also use a multi-core architecture.
  • CPU central processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • CPLD complex programmable logic device
  • the memory 1620 is used to store computer programs; the transceiver 1600 is used to send and receive data under the control of the processor; the processor 1610 is used to read the computer programs in the memory and perform the following operations:
  • the notification message carries the CN PDB value for determining the core network packet delay budget; wherein, the notification message is when the base station determines that the CN PDB does not meet the preset delay budget PDB requirement sent;
  • the policy control function network element PCF is requested to update the QoS parameters according to the CN PDB.
  • the CN PDB sends a backhaul request message on a preset tunnel based on the General Radio Packet Service GPRS Tunneling Protocol GTP-U, and sends a backhaul request message according to the received backhaul response message. time fixed;
  • the Internet Internet Control Message Protocol ICMP packet is based on sending the Internet Internet Control Message Protocol ICMP packet to the opposite UPF of the general wireless packet service GPRS tunneling protocol GTP-U path, and is determined according to the receiving time of the ICMP packet.
  • the determining of the satellite as the return transmission includes:
  • the transport layer connection information of the N3 tunnel of the protocol data unit PDU session it is determined to use the satellite to provide backhaul for the PDU session;
  • the transport layer connection information of the user plane connection of the PDU session it is determined to use the satellite to provide backhaul for the PDU session.
  • session management function network element SMF provided by the embodiment of the present disclosure can implement all the method steps of the data processing method embodiment applied to the base station and achieve the same technical effect, which is not repeated here.
  • FIG. 17 is one of the schematic structural diagrams of the user plane function network element UPF provided by an embodiment of the present disclosure, including a memory 1720 , a transceiver 1700 , and a processor 1710 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1710 and various circuits of memory represented by memory 1720 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 1700 may be multiple elements, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 1710 is responsible for managing the bus architecture and general processing, and the memory 1720 may store data used by the processor 1710 in performing operations.
  • the processor 1710 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (Complex Programmable Logic Device). , CPLD), the processor can also use a multi-core architecture.
  • CPU central processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • CPLD complex programmable logic device
  • the memory 1720 is used to store computer programs; the transceiver 1700 is used to send and receive data under the control of the processor; the processor 1710 is used to read the computer programs in the memory and perform the following operations:
  • the SMF determines whether it satisfies the core network packet delay budget CN PDB or backhaul delay carried in the backhaul response message.
  • the preset delay budget PDB requirements if not satisfied, request the policy control function network element PCF to update the QoS parameters according to the CN PDB.
  • the SMF determines whether the preset delay budget PDB is satisfied according to the core network packet delay budget CN PDB or the return delay carried in the return response message.
  • requirements including:
  • the backhaul delay or the CN PDB determine whether the backhaul delay or the CN PDB is greater than or equal to the packet delay budget PDB of the QoS flow, and if so, determine that the QoS is not satisfied Packet delay budget PDB requirement for flow.
  • the user plane function network element UPF provided by the embodiments of the present disclosure can implement all the method steps of the data processing method embodiments applied to the base station and achieve the same technical effect, which is not repeated here.
  • an embodiment of the present disclosure further provides a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to cause the processor to execute the processes described in the foregoing embodiments. Methods.
  • the processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg, CD, DVD, BD, HVD, etc.
  • semiconductor memory eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)
  • the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the steps of the above-mentioned data processing method.
  • embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means including the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.

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Abstract

Des modes de réalisation de la présente divulgation concernent un procédé et un appareil de traitement de données, une station de base, un dispositif de réseau, et un support de stockage. Le procédé fait appel aux étapes suivantes : selon un élément de réseau à fonction de gestion de session (SMF) ou après avoir déterminé qu'une liaison terrestre est fournie par un satellite à une session d'unité de données de protocole (PDU), la détermination quant au fait de savoir si un budget de retard de paquets de réseau central (CN PDB) ou un retard de liaison terrestre satisfait ou ne satisfait pas une exigence de budget de retard prédéfinie (PDB) ; et si tel n'est pas le cas, l'envoi d'un message de notification portant la valeur du CN PDB à une SMF desservant la session PDU, le message de notification étant utilisé pour notifier à la SMF de demander à un élément de réseau à fonction de commande de politique (PCF) de mettre à jour un paramètre de QoS selon le CN PDB. La détection de retard de liaison terrestre est effectuée selon le changement de la connexion de liaison terrestre, et la modification de QoS est déclenchée à temps, ce qui permet d'éviter une interruption de service.
PCT/CN2021/135414 2021-01-25 2021-12-03 Procédé et appareil de traitement de données, station de base, dispositif de réseau et support de stockage WO2022156384A1 (fr)

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