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WO2022061919A1 - Procédé, appareil et système pour garantir le délai de transmission de service - Google Patents

Procédé, appareil et système pour garantir le délai de transmission de service Download PDF

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Publication number
WO2022061919A1
WO2022061919A1 PCT/CN2020/118510 CN2020118510W WO2022061919A1 WO 2022061919 A1 WO2022061919 A1 WO 2022061919A1 CN 2020118510 W CN2020118510 W CN 2020118510W WO 2022061919 A1 WO2022061919 A1 WO 2022061919A1
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WO
WIPO (PCT)
Prior art keywords
session
network element
delay budget
packet delay
information
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PCT/CN2020/118510
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English (en)
Chinese (zh)
Inventor
李永翠
余芳
倪慧
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华为技术有限公司
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Priority to PCT/CN2020/118510 priority Critical patent/WO2022061919A1/fr
Publication of WO2022061919A1 publication Critical patent/WO2022061919A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method, apparatus and system for ensuring service transmission delay.
  • each session management function has its own service area, and the service area is all user plane functions (UPF) controlled by the session management network element. sum of service areas.
  • the user plane network element connected to the data network is called the anchor point user plane network element, and the session management network element that controls the anchor point user plane network element is called the anchor point session management network element.
  • the service area of a session management network element cannot cover the operator's entire network (eg public land mobile network, public land mobile network, PLMN).
  • the 5G network may insert an intermediate user plane network element in the user plane of the terminal device, and this If the intermediate user plane network element is not within the service area of the anchor session management network element, the 5G network will insert an intermediate session management network element for controlling the intermediate user plane network element in the control plane of the terminal device.
  • the terminal device establishes a user plane channel to communicate with the data network through the intermediate user plane network element and the anchor user plane network element.
  • 3GPP defines a packet delay budget (PDB), which indicates the delay requirements that the user plane packets of the terminal equipment need to meet when transmitting in the 5G system.
  • PDB packet delay budget
  • the embodiments of the present application are used to provide a method, apparatus and system for ensuring service transmission delay, so as to ensure the service transmission delay when a terminal device moves in a network with enhanced topology.
  • an embodiment of the present application provides a method for ensuring service transmission delay, the method comprising: obtaining a core network packet delay budget of a session of a terminal device, the session being switched from a source access network device to a target access network device network equipment, the middle user plane network element of the session remains unchanged; send the core network packet delay budget to the target access network device, and the core network packet delay budget is used for the transmission time of the session extended protection.
  • the updated core network packet delay budget is obtained, which ensures the session during the terminal device switching process.
  • the transmission delay meets the delay budget requirement.
  • acquiring the core network packet delay budget of the session includes: sending the location information of the terminal device to the anchor session management network element serving the terminal device; The element receives the core network packet delay budget, and the core network packet delay budget corresponds to the location information.
  • the updated core network packet delay budget is obtained from the anchor session management network element serving the terminal device.
  • sending the location information of the terminal device to the anchor session management network element includes: sending a session update request message to the anchor session management network element, where the session update request message includes the location information.
  • sending the session update request message to the anchor session management network element includes: sending first indication information to the mobility management network element serving the terminal device, where the first indication information is used to indicate the The mobility management network element initiates a session modification process; receives an update session management context request message from the mobility management network element; and sends the session update request message to the anchor session management network element in response to the update session management context request message.
  • the updated core network packet delay budget is obtained from the anchor session management network element.
  • the method further includes: sending second indication information to the anchor session management network element, where the second indication information is used to instruct the anchor session management network element to update the core network packet delay budget.
  • the anchor session management network element is triggered to update the core network packet delay budget through the second indication information, thereby optimizing the action of the anchor session management network element.
  • the method further includes: determining that the session is handed over from the source access network device to the target access network device according to at least one of the following: identification information of the target access network device, session management of the session information.
  • the method further includes: determining that the type of the session is a delay critical type.
  • an updated core network packet delay budget is obtained for a delay-critical session, which saves signaling.
  • the core network packet delay budget is related to at least one of the following: a service quality parameter of the session, a service quality feature of the session, network topology information serving the session, and the terminal device's location information.
  • the core network packet delay budget is determined according to at least one of the foregoing items, which ensures the accuracy of the core network packet delay budget.
  • the network topology information includes: information of an anchor user plane network element serving the session, information of an intermediate user plane network element serving the session, and access network equipment serving the session information; or the connection layout between the anchor user plane network element, the intermediate user plane network element, and the access network device.
  • an embodiment of the present application provides a method for ensuring service transmission delay, the method includes: receiving location information of the terminal device from an intermediate session management network element serving the terminal device; determining a packet delay budget, the The core network packet delay budget corresponds to the location information; the core network packet delay budget is sent to the intermediate session management network element, and the core network packet delay budget is used to guarantee the transmission delay of the session.
  • the updated core network packet delay budget is sent to the intermediate session management network element, thereby ensuring the terminal device switching
  • the session transmission delay in the process meets the delay budget requirement.
  • the determining of the core network packet delay budget includes: determining the core network packet delay budget according to at least one of the following: a service quality parameter of the session of the terminal device, a session of the terminal device Quality of service characteristics, network topology information serving the session, and location information of the terminal device.
  • the core network packet delay budget is determined by at least one of the above, so as to ensure the accuracy of the core network packet delay budget.
  • the network topology information includes: information of an anchor user plane network element serving the session, information of an intermediate user plane network element serving the session, and access network equipment serving the session information; or the connection layout between the anchor user plane network element, the intermediate user plane network element, and the access network device.
  • the method further includes: receiving indication information from the intermediate session management network element; the above-mentioned determining the core network packet delay budget includes: in response to the indication information, determining the core network packet delay budget .
  • the triggering condition for the action of determining the core network packet delay budget is optimized.
  • an embodiment of the present application provides a method for ensuring service transmission delay, the method includes: receiving indication information from an intermediate session management network element serving a terminal device; responding to the indication information, sending a request to the intermediate session management network The element sends an update session management context request message, where the update session management context request message includes the location information of the terminal device, and the update session management context request message is used for the acquisition of the core network packet delay budget of the session of the terminal device, The core network packet delay budget is used to guarantee the transmission delay of the session.
  • the core network packet delay budget is related to at least one of the following: a service quality parameter of the session, a service quality feature of the session, network topology information serving the session, and the terminal device's location information.
  • the core network packet delay budget is determined by at least one of the above, so as to ensure the accuracy of the core network packet delay budget.
  • the network topology information includes: information of an anchor user plane network element serving the session, information of an intermediate user plane network element serving the session, and access network equipment serving the session information; or the connection layout between the anchor user plane network element, the intermediate user plane network element, and the access network device.
  • an embodiment of the present application provides a method for ensuring service transmission delay, the method comprising: sending location information of the terminal device to an anchor session management network element, where the anchor session management network element subscribes to the terminal device's location information. location update; obtain the core network packet delay budget of the session of the terminal device from the anchor session management network element; send the core network packet delay budget to the target access network device, the core network packet delay budget Guarantee of transmission delay for this session.
  • the core network packet delay budget is related to at least one of the following: QoS parameters of the session, QoS features of the session, topology information of the network serving the session, the terminal device location information.
  • the core network packet delay budget is determined by at least one of the above, so as to ensure the accuracy of the core network packet delay budget.
  • the network topology information includes: information of an anchor user plane network element serving the session, information of an intermediate user plane network element serving the session, and access network equipment serving the session information; or the connection layout between the anchor user plane network element, the intermediate user plane network element, and the access network device.
  • determining that the session of the terminal device is switched from the source access network device to the target access network device includes: determining that the session of the terminal device is switched from the source access network device to the target access network device according to at least one of the following items Network device: identification information of the target access network device, and session management N2 information of the session.
  • sending the location information of the terminal device to the anchor session management network element includes: sending a notification message to the anchor session management network element, where the notification message includes the location information.
  • the method further includes: determining that the type of the session is a delay critical type.
  • an updated core network packet delay budget is obtained for a delay-critical session, which saves signaling.
  • the method further includes: sending second indication information to the anchor session management network element, where the second indication information is used to instruct the anchor session management network element to update the core network packet delay budget.
  • the anchor session management network element is triggered to update the core network packet delay budget through the second indication information, thereby optimizing the action of the anchor session management network element.
  • an embodiment of the present application provides a method for ensuring service transmission delay, the method comprising: receiving location information of a terminal device; determining a core network packet delay budget according to the location information; The access network device sends the core network packet delay budget, and the core network packet delay budget is used to guarantee the transmission delay of the session.
  • sending the core network packet delay budget to the access network device serving the terminal device includes: sending an intermediate session management network element or a mobility management network element serving the terminal device to the The access network device sends the core network packet delay budget.
  • the method further includes: subscribing the location or location update of the terminal device to an intermediate session management network element or a mobility management network element serving the terminal device.
  • the method further includes: determining that the type of the session is a delay critical type.
  • the location or location update is subscribed for the delay-critical session, saving signaling.
  • an embodiment of the present application provides a communication device, including a processor, where the processor is configured to read and execute instructions from a memory, so as to implement the method in the first aspect or any possible implementation manner.
  • the communication device further includes the above-mentioned memory.
  • an embodiment of the present application provides a communication device, including a processor, where the processor is configured to read and execute instructions from a memory, so as to implement the method in the second aspect or any possible implementation manner.
  • the communication device further includes the above-mentioned memory.
  • an embodiment of the present application provides a communication device, which is characterized in that it includes a processor, and the processor is configured to read and execute instructions from a memory, so as to implement the third aspect or any possible implementation manner as described above. Methods.
  • the communication device further includes the above-mentioned memory.
  • an embodiment of the present application provides a communication device, which is characterized in that it includes a processor, and the processor is configured to read and execute instructions from a memory, so as to implement the fourth aspect or any possible implementation manner as described above. Methods.
  • the communication device further includes the above-mentioned memory.
  • an embodiment of the present application provides a communication device, which is characterized in that it includes a processor, and the processor is configured to read and execute instructions from a memory, so as to implement the fifth aspect or any possible implementation manner as described above.
  • the communication device further includes the above-mentioned memory.
  • an embodiment of the present application provides a program product, which is characterized in that it includes an instruction, when the instruction is executed on a communication device, so that the communication device can implement the first aspect or any possible implementation as before. the method in the method, or the method in the second aspect or any possible implementation, or the method in the third aspect or any possible implementation, or the method in the fourth aspect or any possible implementation , or the method in the fifth aspect or any possible implementation manner.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores the program product provided in the ninth aspect.
  • a thirteenth aspect a communication system, is characterized by comprising one or more communication devices as in the sixth aspect to the tenth aspect.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a method for ensuring service transmission delay provided by an embodiment of the present application
  • FIG. 3 is a schematic flowchart of a method for ensuring service transmission delay provided by an embodiment of the present application
  • FIG. 4 is a schematic flowchart of another method for ensuring service transmission delay provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another method for ensuring service transmission delay provided by an embodiment of the present application.
  • 6a is a schematic flowchart of another method for ensuring service transmission delay provided by an embodiment of the present application.
  • 6b is a schematic flowchart of another method for ensuring service transmission delay provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a communication device provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another communication apparatus provided by an embodiment of the present application.
  • FIG. 1 it is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • terminal equipment accesses the core network through an access network (radio access network, RAN) equipment.
  • the terminal equipment can establish a connection with the data network (DN) through the access network and the core network.
  • the data network is a network that provides services for terminal devices, and can provide, for example, operator services, Internet (Internet) access services, or third-party services.
  • the connection can be a packet data network connection (PDN connection) or a bearer.
  • PDN connection packet data network connection
  • the connection can be a protocol data unit session (PDU Session).
  • the connection may be a PDU session, a PDN connection, or other similar concepts, which are not limited in this embodiment of the present application.
  • the connection established between the terminal device and the data network is also called a session.
  • a terminal device is a device used to implement wireless communication functions, such as a terminal or a chip that can be used in a terminal, etc. It can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on water (such as ships, etc.); can also be deployed in the air (such as on airplanes, balloons, satellites, etc.).
  • the terminal may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, an access terminal, a terminal unit, a terminal station, a mobile station, a 4G network, a 5G network, or a public land mobile network (PLMN) in the future evolution.
  • UE user equipment
  • PLMN public land mobile network
  • the access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices or wearable devices, virtual reality (VR) end devices, augmented reality (AR) end devices, industrial control (industrial) wireless terminal in control), wireless terminal in self-driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • Terminal equipment can be mobile or fixed.
  • An access network device is a device that provides wireless communication functions for terminal devices.
  • Access network equipment includes but is not limited to: next generation access network (Next Generation RAN, NG-RAN), next generation base station (gnodeB, gNB), evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B (node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center, etc.
  • Next Generation RAN Next Generation RAN, NG-RAN
  • next generation base station next generation base station
  • eNB evolved node B
  • RNC radio network controller
  • node B node B
  • BSC base station controller
  • BTS base transceiver station
  • the core network includes mobility management network elements, session management network elements, and user plane network elements.
  • the core network further includes a user data management network element, a network capability opening network element or a policy control network element.
  • the mobility management network element is a network element that provides mobility management for terminal equipment. Mobility management, such as user location update, user registration network, user switching, etc.
  • the mobility management network element may be a mobility management entity (mobility management etity, MME).
  • the mobility management network element can be an access and mobility management function (AMF).
  • the session management network element is a network element that provides session management for terminal equipment. Session management, such as session establishment, modification, release, etc. Specific functions include allocating Internet Protocol (IP) addresses to users, and selecting user plane network elements that provide packet forwarding functions.
  • IP Internet Protocol
  • the session management network element may be a serving gateway control plane (SGW-C) or a packet data network gateway control plane (PGW-C) or SGW-C and The network element co-located by the PGW-C.
  • the session management network element may be a session management function (SMF).
  • a user plane network element is a network element that forwards user plane data packets between a terminal device and a data network.
  • the user plane network element forwards user data packets according to the routing rules of the session management network element.
  • the user plane network element can be a serving gateway user plane (SGW-U) or a packet data gateway user plane (PGW-U) or SGW-U and PGW -U co-located network element.
  • a user plane network element may be a user plane function (UPF) network element.
  • UPF user plane function
  • User plane network elements between plane network elements are called intermediate user plane network elements.
  • the session management network element that controls the user plane network element of the anchor point is also called the anchor point session management network element.
  • a session management network element that controls an intermediate user plane network element is also called an intermediate session management network element.
  • Each session management network element has its own service area, and the service area is the sum of the service areas of all user plane network elements controlled by the session management network element.
  • the service area of one session management network element cannot cover the entire network of one operator (eg PLMN).
  • PLMN public Land Mobile Network
  • the terminal equipment may move out of the service area of the anchor session management network element serving the terminal equipment.
  • the communication system may insert an intermediate user plane network element in the user plane of the terminal equipment. . Since the intermediate user plane network element is not within the service area of the anchor session management network element, the communication network inserts an intermediate session management network element for controlling the intermediate user plane network element in the control plane of the terminal device.
  • the terminal device establishes a user plane channel to communicate with the data network through the intermediate user plane network element and the anchor user plane network element.
  • the policy control network element is a network element that provides user subscription data management, policy control, charging policy control, and quality of service (QoS) control.
  • the policy control network element may be a policy control and charging function (policy control and charging function, PCRF).
  • policy control network element may be a policy control function (PCF).
  • the unified data management network element is a network element responsible for managing subscription information of terminal equipment.
  • the unified data management network element can be a home subscriber server (HSS).
  • HSS home subscriber server
  • UDM unified data management
  • the above network elements or equipment can still use their names in 4G or 5G communication systems, or have other names; the functions of the above network elements or equipment can be completed by an independent network element, It may also be performed jointly by several network elements, which is not limited in this embodiment of the present application.
  • network elements in the core network can be co-located.
  • the mobility management network element can be co-located with the session management network element; the session management network element can be co-located with the user plane network element; the network slice selection function network element, the policy control network element, and the unified data management network element can be co-located.
  • the interaction between the two network elements provided in this embodiment of the present application becomes an internal operation of the combined network element or can be omitted.
  • QoS flow Quality of service flow
  • a PDU session can include one or more QoS flows.
  • a QoS flow identity (QFI) is used to identify a QoS flow; the user plane data with the same QFI in the PDU session will receive the same forwarding processing (such as the same scheduling, the same admission threshold, etc.).
  • the QoS flow may be controlled by the SMF, which may be pre-configured or established through a PDU session establishment or modification procedure.
  • the SMF can send the QoS rules of the QoS flow (for example: QoS rule) to the UE.
  • the QoS rules include QFI, packet filter set, etc., and the UE can classify and mark the upstream service flow according to the QoS rules, that is, the terminal
  • the device can associate the uplink data with the corresponding QoS flow according to the QoS rules.
  • the SMF can send the QoS profile (for example: QoS profile) of the QoS flow to the RAN.
  • the QoS profile includes 5QI, allocation and retention priority (ARP), guaranteed flow bit rate (GFBR), maximum Stream bit rate (maximum flow bit rate, MFBR), etc.
  • ARP allocation and retention priority
  • GFBR guaranteed flow bit rate
  • MFBR maximum Stream bit rate
  • One QoS document corresponds to one QFI.
  • the RAN can control the traffic flow according to the QoS profile.
  • the resource types of QoS flow can be divided into the following types: guaranteed bit rate (guaranteed bit rate, GBR) QoS flow, delay-critical GBR (for example: delay-critical GBR) QoS flow and non-guaranteed bit rate Non-GBR QoS flow.
  • GBR guaranteed bit rate
  • delay-critical GBR for example: delay-critical GBR
  • Non-GBR QoS flow non-guaranteed bit rate
  • a QoS flow can correspond to a bearer.
  • QoS flows can still use their names in 4G or 5G communication systems, or have other names.
  • 5G QoS identifier (5G QoS identifier, 5QI)
  • 5QI is used to represent the 5G QoS characteristics of QoS flows
  • 5QI is a scalar, used to index a 5G QoS characteristics
  • QoS characteristics can include at least one of resource type, priority level, PDB, packet error rate, average window, etc. .
  • 5QI can correspond to a quality of service class identifier (QoS class identifier, QCI).
  • QCI quality of service class identifier
  • 5QI can still use its name in 4G or 5G communication systems, or have other names.
  • PDB refers to the upper limit of the delay of packet transmission between the terminal device and the anchor user plane network element. PDBs can be used to support scheduling and link layer function configuration, such as setting scheduling priority weights.
  • the PDB can be divided into two parts: the access network packet delay budget (access network PDB, AN PDB) and the core network packet delay budget (corenetwork PDB, CN PDB).
  • access network PDB access network packet delay budget
  • AN PDB refers to the upper limit of the delay of packet transmission between terminal equipment and access network equipment.
  • CN PDB refers to the upper limit of the delay of packet transmission between the access network equipment and the anchor user plane network element.
  • PDB is equal to the sum of AN PDB and CN PDB.
  • the CN PDB can be configured on the session management network element.
  • the session management network element can send the CN PDB corresponding to the QoS flow to the access network device, and the access network device can obtain the QoS according to the 5QI index of the QoS flow.
  • the PDB corresponding to the flow is further determined according to the PDB corresponding to the QoS flow and the CN PDB corresponding to the QoS flow to determine the AN PDB corresponding to the QoS flow.
  • the delay of packet transmission in the network is related to the network topology.
  • the network topology includes access network equipment, intermediate user plane network elements, anchor point user plane network elements, and their relative positions or connection layouts.
  • the anchor session management network element can determine the CN PDB according to the network topology.
  • the network topology may change.
  • CN PDB and AN PDB should be adjusted with the change of network topology to ensure that the delay requirement of packet transmission in the network is met.
  • the intermediate user plane network elements serving the terminal device may not change.
  • the anchor session management network element cannot perceive that the terminal device has been switched to the second access network device, and therefore cannot update the CN PDB.
  • the packet is sent between the second access network device and the intermediate user plane network element.
  • the time required for the intermediate transmission is longer than the transmission time between the first access network device and the intermediate user plane network element.
  • an embodiment of the present application provides a method for ensuring service transmission delay. As shown in Figure 2, the method includes:
  • the first network element obtains the core network packet delay budget of the session of the terminal device from the anchor session management network element, the session is switched from the source access network device to the target access network device, and the intermediate user plane network of the session Yuan remains unchanged.
  • the core network packet delay budget is related to at least one of the following: QoS parameters of the session, QoS characteristics of the session, and network topology information serving the session.
  • the network topology information includes: the information of the anchor user plane network element serving the session, the information of the intermediate user plane network element serving the session, and the access network device information serving the session; or, the anchor The connection layout between the point user plane network element, the intermediate user plane network element and the access network equipment.
  • the first network element obtains the core network packet delay budget of the session from the anchor session management network element.
  • the anchor session management network element determines the core network packet delay budget of the session according to at least one of the following: QoS parameters of the session, QoS features of the session, and network topology information serving the session.
  • the first network element obtains the locally stored core network packet delay budget of the session.
  • the first network element obtains the locally stored core network packet delay budget of the session according to at least one of the following: a quality of service parameter of the session, a quality of service feature of the session, and network topology information serving the session. .
  • the first network element determines that the session of the terminal device is switched from the source access network device to the target access network device.
  • the first network element determines, according to the identification information of the target access network device, that the session of the terminal device is switched from the source access network device to the target access network device.
  • the first network element determines that the access network device has changed according to the identification information of the target access network device, so it can be determined that the terminal device has been handed over.
  • the identification information of the target access network device includes the identification of the target access network device, the tunnel endpoint information of the tunnel between the target access network device and the intermediate user plane network element, the name of the target access network device or the name of the target access network device.
  • the first network element determines, according to the session management information of the session, that the session of the terminal device is switched from the source access network device to the target access network device.
  • the session management information includes a session switching indication, indicating that the session is switched; the first network element determines, according to the session switching indication, that the session is switched from the source access network device to the target access network device.
  • the first network element jointly determines, according to the identifier of the target access network device and the session management information of the session, that the session of the terminal device is switched from the source access network device to the target access network device.
  • the first network element may not store the identification information of the source access network device. At this time, the first network element may store the context of the session and receive the target The identification information of the access network device determines that the session is handed over to the target access network device.
  • the first network element determines that a new intermediate user plane network element does not need to be selected for the session.
  • the first network element determines, according to the location information of the terminal device, that it is not necessary to select a new intermediate user plane network element for the session.
  • S202 The first network element sends the core network packet delay budget to the target access network device according to the delay budget.
  • the first network element sends the core network packet delay budget obtained in S201 to the target access network device.
  • the target access network device guarantees the transmission delay of the session according to the core network packet delay budget.
  • the target access network device determines the access network packet delay budget according to the core network packet delay budget, and guarantees the transmission delay of the session according to the access network packet delay budget.
  • the The point session management network element obtains the core network packet delay budget of the session, and sends the core network packet delay budget to the target access network device.
  • the target access network device guarantees the session according to the core network packet delay budget.
  • the transmission delay ensures that the session transmission delay of the terminal device during the handover process meets the delay budget requirement.
  • first network element may be an intermediate session management network element, or may be other network elements, which are not limited in this embodiment of the present application.
  • the process of switching the session of the terminal device from the source access network device to the target access network device not only includes the process that the source access network device triggers the terminal device to switch to the target access network device, but also includes Other procedures in which the source access network device establishes a session and accesses from the target access network device, for example, the terminal device accesses the source access network device and establishes a session, enters the idle state, accesses from the target access network device and executes The process of mobility registration; or, the terminal device accesses and establishes a session in the source access network device, the user plane connection between the terminal device corresponding to the session and the intermediate user plane network element is disconnected, and the terminal device is connected from the target access network.
  • the process by which a device accesses and executes a service request The process by which a device accesses and executes a service request.
  • the process of switching the session of the terminal device from the source access network device to the target access network device is also referred to as the process of moving the session of the terminal device from the source access network device to the target access network device.
  • an embodiment of the present application provides a method for ensuring service transmission delay.
  • the following terminal equipment takes UE as an example, the access network equipment takes NG-RAN as an example, the mobility management network element takes AMF as an example, the intermediate session management network element takes I-SMF as an example, and the anchor session management network element takes SMF as an example
  • the intermediate user plane network element takes the I-UPF as an example, and the session of the terminal device takes the PDU session as an example to introduce a method for ensuring service transmission delay provided by the embodiment of the present application.
  • the method includes:
  • S301 The UE establishes a PDU session through the source NG-RAN.
  • the network establishes a PDU session for the UE.
  • the control plane network elements serving the PDU session include AMF, I-SMF and SMF.
  • the PDU session may include one or more QoS flows. These QoS flows may or may not be of the same type. Types of QoS flows include: Guaranteed Bit Rate QoS Flow, Delay-Critical GBR QoS Flow, and Non-Guaranteed Bit Rate Non-GBR QoS Flow.
  • S302 The UE is handed over from the source NG-RAN to the target NG-RAN.
  • S302 includes the following steps:
  • the source NG-RAN decides to handover the UE to the target NG-RAN.
  • the source NG-RAN may decide to switch the UE to the target NG-RAN according to the UE's measurement report.
  • the source NG-RAN sends a handover request (eg, Handover Request) message to the target NG-RAN.
  • the handover request message requests the target NG-RAN to prepare for the handover of the UE to the target NG-RAN.
  • the target NG-RAN sends a handover request acknowledgement (eg, Handover Request Acknowledge) message to the source NG-RAN.
  • the handover request confirmation message indicates that the target NG-RAN has prepared resources for the handover of the UE.
  • the target NG-RAN sends a Path Switch Request (eg Path Switch Request) message to the AMF.
  • the Path Switch Request message instructs the AMF to switch the UE from the source NG-RAN to the target NG-RAN.
  • the path switching request message includes the location information of the UE.
  • the location information of the UE includes at least one of the following: target cell identifier, target NG-RAN identifier, target NG-RAN name, target tracking area identifier, and target tracking area name.
  • the target NG-RAN prepares resources for the handover of the UE's PDU session.
  • the messages in the handover process are transmitted between the source NG-RAN and the target NG-RAN through AMF.
  • S302 includes the following steps:
  • the source NG-RAN decides to handover the UE to the target NG-RAN.
  • the source NG-RAN may decide to switch the UE to the target NG-RAN according to the UE's measurement report.
  • the source NG-RAN sends a handover required (eg Handover Required) message to the AMF.
  • the handover request message is used to request the target NG-RAN to prepare for the handover of the UE to the target NG-RAN through the AMF.
  • the path switching request message includes the location information of the UE.
  • the AMF learns that the UE is handed over from the source NG-RAN to the target NG-RAN, or the UE is about to be handed over from the source NG-RAN to the target NG-RAN.
  • S303 The AMF sends a session context update request message to the I-SMF.
  • the session context update request message is used to instruct the UE to switch the PDU session from the source NG-RAN to the target NG-RAN.
  • the session context update request message includes location information of the UE.
  • the UE's location information indicates to the I-SMF that the PDU session is to be handed over.
  • the session context update request message further includes first indication information.
  • the first indication information is used to indicate that the PDU session is to be switched.
  • the first indication information may be at least one of the following: a PDU session handover indication, N3 address information of the target NG-RAN, a PDU session rejection indication, and a PDU session rejection reason value.
  • the I-SMF determines that the PDU session of the UE is switched from the source NG-RAN to the target NG-RAN.
  • the I-SMF determines that the UE's PDU session is switched from the source NG-RAN to the target NG-RAN according to the received session context update request message.
  • the I-SMF determines, according to the foregoing first indication information, that the PDU session of the UE is switched from the source NG-RAN to the target NG-RAN.
  • the I-SMF determines that a new I-UPF does not need to be selected for the PDU session.
  • the I-SMF determines that the I-UPF can continue to serve the PDU session. Therefore, the I-SMF does not need to select a new I-UPF for this PDU session. Exemplarily, the I-SMF determines that the I-UPF can continue to serve the PDU session according to the location information of the UE.
  • the I-SMF requests the SMF for the core network packet delay budget of the PDU session.
  • the I-SMF sends a PDU session update request to the SMF.
  • the PDU session update request is used to request the SMF to obtain the core network packet delay budget of the PDU session.
  • the PDU session update request includes the location information of the UE.
  • the I-SMF sends a notification message to the SMF.
  • the notification message is used to request the SMF to obtain the core network packet delay budget of the PDU session.
  • the notification message includes location information of the UE.
  • the core network packet delay budget of the PDU session may be the core network packet delay budget of the PDU session granularity or the core network packet delay budget of the QoS flow granularity in the PDU session.
  • the location information of the UE instructs the SMF to update the core network packet delay budget of the PDU session.
  • the PDU session update request further includes second indication information.
  • the second indication information is used to instruct the SMF to update the core network packet delay budget of the PDU session.
  • the I-SMF requests the SMF for the core network packet delay budget of the PDU session.
  • the I-SMF when the I-SMF determines that the PDU session includes a delay-critical QoS flow, the I-SMF sends a PDU session update request to the SMF.
  • the I-SMF determines that the QoS flow is a delay-critical QoS flow according to the 5QI of the QoS flow in the PDU session.
  • the SMF sends the core network packet delay budget of the PDU session to the I-SMF.
  • the SMF sends the core network packet delay budget of the PDU session to the I-SMF.
  • the SMF determines the core network packet delay budget of the PDU session according to the location information of the UE.
  • the SMF determines the core network packet delay budget of the PDU session according to the location information of the UE.
  • the SMF further determines the core network packet delay budget of the PDU session according to at least one of the following: QoS parameters of the PDU session, QoS features of the PDU session, and network topology information serving the PDU session.
  • the network topology includes NG-RAN, I-UPF, anchor UPF and the relative position or connection layout among them.
  • the SMF can determine the core network packet delay budget of the PDU session according to the network topology.
  • the SMF stores the correspondence between 5QI, network topology and core network packet delay budget.
  • the following table describes an example:
  • 5QI Network topology Core network packet delay budget 5QI1 NG-RAN1—I-UPF—UPF CN PDB1 5QI1 NG-RAN2—I-UPF—UPF CN PDB2 5QI2 NG-RAN2—I-UPF—UPF CN PDB3 ...
  • the SMF determines the core network packet delay budget of the PDU session according to the 5QI of the QoS flow in the PDU session and the network topology.
  • the SMF sends a PDU Session Update Response to the I-SMF.
  • the PDU session update response includes a core network packet delay budget.
  • the I-SMF sends the core network packet delay budget of the PDU session to the AMF.
  • the I-SMF sends N2 session management information to the AMF.
  • the N2 session management information includes the core network packet delay budget of the PDU session obtained in S307.
  • the I-SMF sends a session context update response to the AMF.
  • the session context update response includes the above-mentioned N2 session management information.
  • the I-SMF sends a notification response message to the AMF.
  • the notification response message includes the above-mentioned N2 session management information.
  • the AMF sends the core network packet delay budget of the PDU session to the target NG-RAN.
  • the AMF sends the N2 session management information received in S308 to the NG-RAN.
  • the AMF sends a handover request confirmation to the target NG-RAN.
  • the handover request confirmation includes the above-mentioned N2 session management information.
  • the switch request confirmation is a path switch request confirmation message.
  • the handover request acknowledgement is a handover request message.
  • the target NG-RAN calculates the access network packet delay budget according to the received core network packet delay budget, and guarantees the transmission delay of the session according to the access network packet delay budget.
  • the packet delay budget is the core network packet delay budget
  • the target access network device determines the access network packet delay budget according to the core network packet delay budget, and determines the access network packet delay budget according to the access network packet delay budget.
  • the message delay budget guarantees the transmission delay of the session.
  • the intermediate session management network element determines that a new intermediate user plane network element does not need to be selected for the session
  • the The point session management network element obtains the core network packet delay budget of the session, and sends the core network packet delay budget to the target access network device, so that the target access network device can guarantee the core network packet delay budget according to the core network packet delay budget.
  • the transmission delay of the session ensures that the session transmission delay of the terminal device during the handover process meets the delay budget requirement.
  • the above-mentioned handover process of the terminal device from the source access network device to the target access network device is just an example.
  • the solutions described in the embodiments of this application can also be used for other processes in which the terminal device establishes a session at the source access network device and accesses from the target access network device, for example, the terminal device accesses and establishes a session at the source access network device , enter the idle state, access from the target access network device and perform mobility registration; or, the terminal device accesses and establishes a session at the source access network device, and the terminal device corresponding to the session is connected with the intermediate user plane network element.
  • the user plane connection between the two is disconnected, and the terminal device accesses from the target access network device and executes the process of the service request.
  • the source access network device and the target access network device may be the same access network device.
  • the embodiment of the present application provides another method for ensuring service transmission delay.
  • the following terminal equipment takes UE as an example, the access network equipment takes NG-RAN as an example, the mobility management network element takes AMF as an example, the intermediate session management network element takes I-SMF as an example, and the anchor session management network element takes SMF as an example
  • the intermediate user plane network element takes the I-UPF as an example, and the session of the terminal device takes the PDU session as an example, to introduce a method for ensuring service transmission delay provided by the embodiment of the present application.
  • the method includes:
  • S401 The UE establishes a PDU session through the source NG-RAN.
  • S401 may refer to the description of S301.
  • S402 The UE is handed over from the source NG-RAN to the target NG-RAN.
  • S402 may refer to the description of S302.
  • S403 The AMF sends a session context update request message to the I-SMF.
  • S403 may refer to the description of S303.
  • the I-SMF determines that the PDU session of the UE is switched from the source NG-RAN to the target NG-RAN.
  • S404 may refer to the description of S304.
  • the I-SMF determines that a new I-UPF does not need to be selected for the PDU session.
  • S405 can refer to the description of S305.
  • the I-SMF sends the first indication information to the AMF.
  • the first indication information instructs the AMF to trigger the PDU session modification procedure.
  • the I-SMF when the I-SMF determines that the PDU session includes a delay-critical QoS flow, the I-SMF sends the first indication information to the AMF.
  • the I-SMF determines that the QoS flow is a delay-critical QoS flow according to the 5QI of the QoS flow in the PDU session.
  • the I-SMF sends a session context update response message to the AMF.
  • the session context update response message includes the first indication information.
  • the AMF sends a handover request confirmation to the target NG-RAN.
  • the switch request acknowledgement is a path switch request acknowledgement (eg, Path Switch Request Acknowledge) message.
  • the handover request confirmation is used to confirm the handover of the UE to the target NG-RAN to the target NG-RAN.
  • the handover request acknowledgement is a handover request (eg, Handover Request) message.
  • the handover request confirmation is used to request the target NG-RAN to prepare for the handover of the UE to the target NG-RAN.
  • S408 The AMF triggers the PDU session modification process.
  • the AMF triggers the PDU session modification process.
  • the AMF-triggered PDU session modification process includes the following steps:
  • the AMF sends an update session management context request to the I-SMF.
  • the update session management context request carries UE location information.
  • the I-SMF sends a session update request to the SMF.
  • the session update request carries UE location information.
  • the UE location information is received by the I-SMF from 1), or received by the I-SMF from S403.
  • the location information of the UE instructs the SMF to determine or update the core network packet delay budget of the PDU session.
  • the session update request further includes second indication information.
  • the second indication information is used to instruct the SMF to determine or update the core network packet delay budget of the PDU session.
  • the SMF sends the core network packet delay budget of the PDU session to the I-SMF.
  • the I-SMF sends the core network packet delay budget of the PDU session to the AMF.
  • the AMF sends the core network packet delay budget of the PDU session to the target NG-RAN.
  • the intermediate session management network element determines that it is not necessary to select a new intermediate user plane network element for the session, instruct the mobile
  • the performance management network element triggers the session modification process to obtain the core network packet delay budget of the session from the anchor session management network element, and sends the core network packet delay budget to the target access network device, so that the target access network
  • the network device guarantees the transmission delay of the session according to the core network packet delay budget, and ensures that the session transmission delay of the terminal device during the handover process meets the delay budget requirement.
  • the above-mentioned handover process of the terminal device from the source access network device to the target access network device is just an example.
  • the solutions described in the embodiments of this application can also be used for other processes in which the terminal device establishes a session at the source access network device and accesses from the target access network device, for example, the terminal device accesses and establishes a session at the source access network device , enter the idle state, access from the target access network device and perform mobility registration; or, the terminal device accesses the source access network device and establishes a session, the terminal device corresponding to the session and the intermediate user plane network element.
  • the user plane connection between the two is disconnected, and the terminal device accesses from the target access network device and executes the process of the service request.
  • the source access network device and the target access network device may be the same access network device.
  • the embodiment of the present application provides another method for ensuring service transmission delay.
  • the following terminal equipment takes UE as an example, the access network equipment takes NG-RAN as an example, the mobility management network element takes AMF as an example, the intermediate session management network element takes I-SMF as an example, and the anchor session management network element takes SMF as an example
  • the intermediate user plane network element takes the I-UPF as an example, and the session of the terminal device takes the PDU session as an example, to introduce a method for ensuring service transmission delay provided by the embodiment of the present application.
  • the method includes:
  • S501 The UE establishes a PDU session through the source NG-RAN.
  • S501 may refer to the description of S301.
  • S502 The UE is handed over from the source NG-RAN to the target NG-RAN.
  • S502 may refer to the description of S302.
  • S503 The AMF sends a session context update request message to the I-SMF.
  • S503 can refer to the description of S303.
  • the I-SMF determines that the PDU session of the UE is switched from the source NG-RAN to the target NG-RAN.
  • S504 may refer to the description of S304.
  • the I-SMF determines that a new I-UPF does not need to be selected for the PDU session.
  • S505 can refer to the description of S305.
  • the I-SMF sends a session context update response to the AMF.
  • the Session Context Update Response indicates to the AMF that the PDU session has been successfully switched.
  • the AMF sends a handover request confirmation to the target NG-RAN.
  • S507 can refer to the description of S407.
  • the I-SMF triggers the PDU session modification process.
  • the I-SMF obtains the core network packet delay budget of the PDU session from the anchor SMF, and sends the core network packet delay budget to the target NG-RAN.
  • the I-SMF-triggered PDU session modification process includes the following steps:
  • the I-SMF sends a session update request to the SMF.
  • the session update request carries UE location information.
  • the UE location information is received by the I-SMF from S503.
  • the location information of the UE instructs the SMF to determine or update the core network packet delay budget of the PDU session.
  • the session update request further includes second indication information.
  • the second indication information is used to instruct the SMF to determine or update the core network packet delay budget of the PDU session.
  • the SMF sends the core network packet delay budget of the PDU session to the I-SMF.
  • the I-SMF sends the core network packet delay budget of the PDU session received in 2) to the AMF.
  • the I-SMF sends N2 session management information to the AMF.
  • the N2 session management information includes the core network packet delay budget of the PDU session.
  • the I-SMF sends an N1N2 message transfer message (eg, N1N2 MessageTransfer message) to the AMF.
  • N1N2 message transmission message carries the above-mentioned N2 session management information.
  • the AMF sends the core network packet delay budget of the PDU session to the target NG-RAN.
  • the AMF sends the N2 session management information received in 4) to the NG-RAN.
  • the I-SMF when the I-SMF determines that the PDU session includes a delay-critical QoS flow, the I-SMF triggers a PDU session modification procedure.
  • the I-SMF determines that the QoS flow is a delay-critical QoS flow according to the 5QI of the QoS flow in the PDU session.
  • the target NG-RAN calculates the access network packet delay budget according to the core network packet delay budget of the received PDU session, and guarantees the transmission delay of the session according to the access network packet delay budget. describe.
  • the session is triggered Modify the process to obtain the core network packet delay budget of the session from the anchor session management network element, and send the core network packet delay budget to the target access network device, so that the target access network device reports the core network packet delay budget according to the core network device.
  • the text delay budget guarantees the transmission delay of the session, and ensures that the session transmission delay of the terminal device during the handover process meets the delay budget requirement. It should be noted that the source access network device and the target access network device may be the same access network device.
  • the above-mentioned handover process of the terminal device from the source access network device to the target access network device is just an example.
  • the solutions described in the embodiments of this application can also be used for other processes in which the terminal device establishes a session at the source access network device and accesses from the target access network device, for example, the terminal device accesses and establishes a session at the source access network device , enter the idle state, access from the target access network device and perform mobility registration; or, the terminal device accesses the source access network device and establishes a session, the terminal device corresponding to the session and the intermediate user plane network element.
  • the user plane connection between the two is disconnected, and the terminal device accesses from the target access network device and executes the process of the service request.
  • the embodiment of the present application provides another method for ensuring service transmission delay.
  • the following terminal equipment takes UE as an example, the access network equipment takes NG-RAN as an example, the mobility management network element takes AMF as an example, the intermediate session management network element takes I-SMF as an example, and the anchor session management network element takes SMF as an example
  • the intermediate user plane network element takes the I-UPF as an example, and the session of the terminal device takes the PDU session as an example to introduce a method for ensuring service transmission delay provided by the embodiment of the present application.
  • the method includes:
  • S601a The UE establishes a PDU session through the source NG-RAN.
  • S601a may refer to the description of S301.
  • the SMF subscribes the UE location to the I-SMF.
  • the I-SMF acquires the location information of the UE, it sends the location information of the UE to the SMF.
  • the SMF subscribes to the I-SMF for UE location updates.
  • the I-SMF acquires the updated location information of the UE, it sends the updated location information of the UE to the SMF.
  • the SMF subscribes to the I-SMF for UE location or UE location update.
  • the SMF determines that the QoS flow in the PDU session is a delay-critical QoS flow according to the 5QI of the QoS flow.
  • S602a The UE is handed over from the source NG-RAN to the target NG-RAN.
  • S602a may refer to the description of S302.
  • S603a The AMF sends a session context update request message to the I-SMF.
  • S603a may refer to the description of S303.
  • the I-SMF determines that the SMF is subscribed to the location or location update of the UE.
  • the I-SMF determines that the location of the UE has changed.
  • the I-SMF stores the location information of the UE previously reported to the SMF.
  • the I-SMF compares the UE location information received in S603a with the UE location information previously reported to the SMF, and learns that the UE location has changed.
  • the I-SMF obtains the core network packet delay budget of the PDU session.
  • the I-SMF sends the location information of the UE to the SMF.
  • the SMF determines the core network packet delay budget according to the location information of the UE.
  • the SMF sends the core network packet delay budget to the I-SMF.
  • the SMF before sending the core network packet delay budget to the I-SMF, the SMF further determines whether the core network packet delay budget corresponding to the UE location has changed. When the core network packet delay budget corresponding to the UE location changes, the SMF sends the core network packet delay budget to the I-SMF; when the core network packet delay budget corresponding to the UE location does not change, the SMF The core network packet delay budget is not sent to the I-SMF.
  • the I-SMF performs S605a when it is determined that the PDU session of the UE is switched from the source NG-RAN to the target NG-RAN.
  • How the I-SMF determines that the UE's PDU session is switched from the source NG-RAN to the target NG-RAN can refer to the description of S201 or S304.
  • the I-SMF sends the core network packet delay budget of the PDU session obtained in S605a to the target NG-RAN.
  • the I-SMF sends the acquired core network packet delay budget of the PDU session to the target NG-RAN, and can refer to the descriptions of S308-S309.
  • the I-SMF sends the acquired core network packet delay budget of the PDU session to the target NG-RAN, and may refer to the description in S408(4)-5)).
  • the I-SMF sends the acquired core network packet delay budget of the PDU session to the target NG-RAN, and may refer to the description of S508(3)-4)).
  • the intermediate session management network element determines that the anchor session management network element subscribes to the location update of the terminal device
  • the The anchor session management network element obtains the core network packet delay budget of the session, and sends the core network packet delay budget to the target access network device, so that the target access network device can calculate the core network packet delay budget according to the core network packet delay budget.
  • the transmission delay of the session is guaranteed, and it is ensured that the session transmission delay of the terminal device in the handover process meets the delay budget requirement.
  • the above-mentioned methods S604a-S606a may also be performed by the AMF. As shown in Figure 6b, the method includes:
  • S601b The UE establishes a PDU session through the source NG-RAN.
  • S601b may refer to the description of S301.
  • the SMF subscribes the UE location to the AMF.
  • the AMF acquires the location information of the UE, it sends the location information of the UE to the SMF.
  • the SMF subscribes to the AMF for UE location updates.
  • the AMF acquires the updated location information of the UE, it sends the updated location information of the UE to the SMF.
  • the SMF subscribes to the AMF for UE location or UE location update.
  • the SMF determines that the QoS flow in the PDU session is a delay-critical QoS flow according to the 5QI of the QoS flow.
  • S602b The UE is handed over from the source NG-RAN to the target NG-RAN.
  • S602b may refer to the description of S302.
  • S603b The AMF determines that the SMF subscribes to the location or location update of the UE.
  • the AMF determines that the location of the UE has changed.
  • the AMF stores the location information of the UE previously reported to the SMF.
  • the AMF compares the UE location information received in S602b with the UE location information previously reported to the SMF, and learns that the location of the UE has changed.
  • S604b The AMF obtains the core network packet delay budget of the PDU session.
  • S604b may refer to the description of S306-S307, and replace I-SMF with AMF.
  • the AMF triggers the PDU session update process, and obtains the core network packet delay budget of the PDU session from the SMF.
  • S604b may refer to the description of S408.
  • the AMF sends the location information of the UE to the SMF.
  • the SMF determines the core network packet delay budget according to the location information of the UE.
  • the SMF sends the core network packet delay budget to the AMF.
  • the SMF before sending the core network packet delay budget to the I-SMF, the SMF further determines whether the core network packet delay budget corresponding to the UE location has changed. When the core network packet delay budget corresponding to the UE location changes, the SMF sends the core network packet delay budget to the I-SMF; when the core network packet delay budget corresponding to the UE location does not change, the SMF The core network packet delay budget is not sent to the I-SMF.
  • the AMF executes S605a when it is determined that the PDU session of the UE is switched from the source NG-RAN to the target NG-RAN.
  • How the AMF determines that the UE's PDU session is switched from the source NG-RAN to the target NG-RAN can refer to the description of S201, where the first network element in S201 is replaced by AMF.
  • S605b The AMF sends the core network packet delay budget of the PDU session obtained in S605a to the target NG-RAN.
  • S605b may refer to the description of S309.
  • S605b may refer to the description of S408 (5).
  • S605b may refer to the description of S508 (4).
  • the The anchor session management network element obtains the core network packet delay budget of the session, and sends the core network packet delay budget to the target access network device, so that the target access network device can calculate the core network packet delay budget according to the core network packet delay budget.
  • the transmission delay of the session is guaranteed, and it is ensured that the session transmission delay of the terminal device in the handover process meets the delay budget requirement.
  • the handover process of the terminal device from the source access network device to the target access network device is just an example.
  • the solutions described in the embodiments of the present application can also be used for other processes in which the terminal device establishes a session on the source access network device and accesses from the target access network device.
  • the terminal device accesses and establishes a session at the source access network device, enters an idle state, accesses from the target access network device and performs mobility registration; or, the terminal device accesses and establishes a session at the source access network device , the process of accessing and executing a service request from a target access network device.
  • the source access network device and the target access network device may be the same access network device.
  • FIG. 7 is a schematic block diagram of a communication apparatus 700 according to an embodiment of the present application.
  • the communication device includes a processing module 701 and a transceiver module 702 .
  • the processing module 701 is used to implement data processing by the communication device.
  • the transceiver module 702 is used to implement content interaction between the communication device and other units or network elements. It should be understood that the processing module 701 in this embodiment of the present application may be implemented by a processor or a processor-related circuit component (or referred to as a processing circuit), and the transceiver module 702 may be implemented by a transceiver or a transceiver-related circuit component.
  • the communication apparatus 700 may be a communication apparatus, or may be a chip applied in the communication apparatus or other combined devices, components, etc. having the functions of the foregoing communication apparatus.
  • the communication apparatus 700 may be the first network element in FIG. 2 , or the I-SMF in any one of FIGS. 3 to 6 .
  • the processing module 701 may be configured to perform the first network element in FIG. 2 or the data processing operation performed by the I-SMF in any one of FIG. 3 to FIG. 6 .
  • the transceiving module 702 may be configured to perform the transceiving operation performed by the first network element in FIG. 2 or the I-SMF in any one of FIGS. 3-6 .
  • the communication apparatus 700 may be the anchor session management network element in FIG. 2 , or the SMF in any one of FIG. 3 to FIG. 6 .
  • the processing module 701 may be configured to perform the data processing operations performed by the anchor session management network element in FIG. 2 and the SMF in any of FIG. 3 to FIG. 6 .
  • the transceiving module 702 may be configured to perform the transceiving operations performed by the anchor session management network element in FIG. 2 and the SMF in any of FIGS. 3-6 .
  • the communication apparatus 700 may be the AMF in any one of FIG. 3 to FIG. 6 .
  • the processing module 701 may be configured to perform data processing operations performed by the AMF in any of FIG. 3 to FIG. 6 . For example, S408, S605, and/or other processes for supporting the techniques described herein.
  • the transceiving module 702 may be used to perform transceiving operations performed by the AMF in any of FIG. 3 to FIG. 6 .
  • An embodiment of the present application further provides a communication apparatus, as shown in FIG. 8 , including: a processor 801 , a communication interface 802 , and a memory 803 .
  • the processor 801, the communication interface 802 and the memory 803 can be connected to each other through a bus 804; the bus 804 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus etc.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the above-mentioned bus 804 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 9, but it does not mean that there is only one bus or one type of bus.
  • the processor 801 may be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP.
  • the processor may further include a hardware chip.
  • the above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the above-mentioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general-purpose array logic (Generic Array Logic, GAL) or any combination thereof.
  • Memory 803 may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • the communication device shown in FIG. 8 may be the first network element in FIG. 2 , or the I-SMF in any of the figures in FIG. 3 to FIG. 6 , to complete the corresponding function.
  • the processor 801 is configured to implement data processing operations of the communication device. For example, S201, S304, S305, S404, S405, S504, S505, S604, S605, and/or other processes for supporting the techniques described herein.
  • the communication interface 802 is used to implement the transceiving operation of the communication device.
  • the communication apparatus shown in FIG. 8 may be the anchor session management network element in FIG. 2 , or the SMF in any of the figures in FIG. 3 to FIG. 6 , to complete corresponding functions.
  • the processor 801 is configured to implement data processing operations of the communication device.
  • the communication interface 802 is used to implement the transceiving operation of the communication device.
  • the communication device shown in FIG. 8 may be the AMF in any of the figures in FIG. 3 to FIG. 6 , so as to complete the corresponding functions.
  • the processor 501 is configured to implement data processing operations of the communication device.
  • the communication interface 502 is used to implement the transceiving operation of the communication device.
  • An embodiment of the present application provides a communication system, which includes the foregoing first network element, or one or more of I-SMF, SMF, and AMF.
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium.
  • the computer program When the computer program is executed by a computer, the computer can implement the method shown in FIG. 2 provided by the foregoing method embodiments.
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium.
  • the computer program When the computer program is executed by a computer, the computer can implement the anchor in FIG. 2 provided by the foregoing method embodiments.
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a computer, the computer can implement FIGS. 3 to 6 provided by the foregoing method embodiments. AMF-related flow in the embodiment shown in any of the figures.
  • Embodiments of the present application further provide a computer program product, where the computer program product is used to store a computer program, and when the computer program is executed by a computer, the computer can implement the embodiment shown in FIG. 2 provided by the foregoing method embodiment.
  • Embodiments of the present application further provide a computer program product, where the computer program product is used to store a computer program, and when the computer program is executed by a computer, the computer can implement the anchor session management in FIG. 2 provided by the foregoing method embodiments A network element, or a process related to SMF in the embodiment shown in any of FIG. 3 to FIG. 6 .
  • Embodiments of the present application further provide a computer program product, where the computer program product is used to store a computer program, and when the computer program is executed by a computer, the computer can implement any one of FIGS. 3 to 6 provided by the foregoing method embodiments. Processes related to AMF in the illustrated embodiment.
  • the present application also provides a chip including a processor.
  • the processor is configured to read and run the computer program stored in the memory to execute the corresponding operations and/or processes performed by the first network element or the I-SMF in the method for guaranteeing service transmission delay provided by the present application.
  • the chip further includes a memory, the memory and the processor are connected to the memory through a circuit or a wire, and the processor is used for reading and executing the computer program in the memory.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is used to receive processed data and/or information, and the processor acquires the data and/or information from the communication interface and processes the data and/or information.
  • the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip, and the like.
  • the processor may also be embodied as a processing circuit or a logic circuit.
  • the present application also provides a chip including a processor.
  • the processor is configured to read and run the computer program stored in the memory to execute the corresponding operations and/or processes performed by the anchor session management network element or the SMF in the method for ensuring service transmission delay provided by the present application.
  • the chip further includes a memory, the memory and the processor are connected to the memory through a circuit or a wire, and the processor is used for reading and executing the computer program in the memory.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is used to receive processed data and/or information, and the processor acquires the data and/or information from the communication interface and processes the data and/or information.
  • the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip, and the like.
  • the processor may also be embodied as a processing circuit or a logic circuit.
  • the present application also provides a chip including a processor.
  • the processor is configured to read and run the computer program stored in the memory to execute the corresponding operations and/or processes performed by the AMF in the method for guaranteeing service transmission delay provided by the present application.
  • the chip further includes a memory, the memory and the processor are connected to the memory through a circuit or a wire, and the processor is used for reading and executing the computer program in the memory.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is used to receive processed data and/or information, and the processor acquires the data and/or information from the communication interface and processes the data and/or information.
  • the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip, and the like.
  • the processor may also be embodied as a processing circuit or a logic circuit.
  • the above-mentioned chip can also be replaced by a chip system, which will not be repeated here.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual conditions to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .
  • the term "and/or” in this application is only an association relationship to describe associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time. , there are three cases of B alone.
  • the character "/" in this document generally indicates that the contextual object is an "or” relationship; the term “at least one” in this application can mean “one” and "two or more", for example, A At least one of , B, and C can mean: A alone exists, B exists alone, C exists alone, A and B exist simultaneously, A and C exist simultaneously, C and B exist simultaneously, and A and B and C exist simultaneously. seven situations.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

Les modes de réalisation de la présente invention concernent un procédé permettant de garantir un délai de transmission de service. Le procédé comprend : dans un réseau à topologie améliorée, au cours d'un processus de déplacement d'un dispositif de réseau d'accès source à un dispositif de réseau d'accès cible, un dispositif terminal obtient, lorsqu'il est déterminé qu'il n'est pas nécessaire de sélectionner un nouvel élément de réseau de plan d'utilisateur intermédiaire pour une session du dispositif terminal, un budget de retard de paquets de réseau central de la session, et envoie le budget de retard de paquets de réseau central au dispositif de réseau d'accès cible ; le dispositif de réseau d'accès cible garantit un retard de transmission de la session selon le budget de retard de paquets de réseau central, assurant ainsi que le retard de transmission de session dans le processus de commutation du dispositif terminal satisfait une exigence de budget de retard.
PCT/CN2020/118510 2020-09-28 2020-09-28 Procédé, appareil et système pour garantir le délai de transmission de service WO2022061919A1 (fr)

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Cited By (1)

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WO2023241445A1 (fr) * 2022-06-13 2023-12-21 维沃移动通信有限公司 Procédés de traitement de retard temporel d'ensemble de paquets de données, appareil et dispositif de communication

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CN110167068A (zh) * 2018-02-14 2019-08-23 华为技术有限公司 一种处理服务质量QoS参数的方法、网元、系统及存储介质
CN110192406A (zh) * 2016-12-15 2019-08-30 Lg 电子株式会社 用于在无线通信系统中执行切换的方法及其设备
WO2019197426A1 (fr) * 2018-04-10 2019-10-17 NEC Laboratories Europe GmbH Système et procédé d'influence de fonction d'application sur un routage de trafic dans une topologie améliorée de smf et d'upf dans des réseaux 5g

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CN110192406A (zh) * 2016-12-15 2019-08-30 Lg 电子株式会社 用于在无线通信系统中执行切换的方法及其设备
CN109041136A (zh) * 2017-06-12 2018-12-18 电信科学技术研究院 一种插入smf的方法及amf实体
CN110167068A (zh) * 2018-02-14 2019-08-23 华为技术有限公司 一种处理服务质量QoS参数的方法、网元、系统及存储介质
WO2019197426A1 (fr) * 2018-04-10 2019-10-17 NEC Laboratories Europe GmbH Système et procédé d'influence de fonction d'application sur un routage de trafic dans une topologie améliorée de smf et d'upf dans des réseaux 5g

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Publication number Priority date Publication date Assignee Title
WO2023241445A1 (fr) * 2022-06-13 2023-12-21 维沃移动通信有限公司 Procédés de traitement de retard temporel d'ensemble de paquets de données, appareil et dispositif de communication

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