WO2022160210A1 - 业务数据流的传输方法、通信装置及通信系统 - Google Patents

业务数据流的传输方法、通信装置及通信系统 Download PDF

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Publication number
WO2022160210A1
WO2022160210A1 PCT/CN2021/074242 CN2021074242W WO2022160210A1 WO 2022160210 A1 WO2022160210 A1 WO 2022160210A1 CN 2021074242 W CN2021074242 W CN 2021074242W WO 2022160210 A1 WO2022160210 A1 WO 2022160210A1
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Prior art keywords
data packet
packet group
data
information
transmission time
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PCT/CN2021/074242
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English (en)
French (fr)
Inventor
马景旺
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202180091742.8A priority Critical patent/CN116830731A/zh
Priority to EP21921820.3A priority patent/EP4280768A4/en
Priority to PCT/CN2021/074242 priority patent/WO2022160210A1/zh
Publication of WO2022160210A1 publication Critical patent/WO2022160210A1/zh
Priority to US18/360,286 priority patent/US20230370897A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1221—Wireless traffic scheduling based on age of data to be sent
    • 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
    • H04W28/08—Load balancing or load distribution
    • H04W28/09—Management thereof
    • H04W28/0992—Management thereof based on the type of application
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/28—Flow control; Congestion control in relation to timing considerations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H04L47/56—Queue scheduling implementing delay-aware scheduling

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a method, a communication device, and a communication system for transmitting service data streams.
  • user plane network elements and access network devices schedule service data flows according to packet granularity based on a configured scheduling policy.
  • the embodiments of the present application provide a service data stream transmission method, a communication device, and a communication system, so as to realize joint scheduling of multiple data packets of the service data stream.
  • an embodiment of the present application provides a method for transmitting a service data stream, including: a network device acquires an identifier of a first data packet group from one or more received data packets, which is used to indicate the first data packet information on the generation time of the packet group and downlink transmission time window information of the first data packet group, the one or more data packets are data packets of the first data packet group of the first service data stream, the first data packet
  • the service data flow includes at least two data packet groups, and the first data packet group is one of the at least two data packet groups; the network device sends data of the first data packet group to the access network device packet, the data packets of the first data packet group are sent together with the identifier of the first data packet group, and at least one data packet in the first data packet group is associated with the first data packet group
  • the identifier, the information used to indicate the generation time of the first data packet group, and the downlink transmission time window information of the first data packet group are sent together.
  • the identifier of the first data packet group, the information used to indicate the generation time of the first data packet group, and the downlink transmission time window information of the first data packet group may be collectively referred to as related information of the first data packet group.
  • the relevant information of the first data packet group is used to perform transmission control on the first data packet group, or, used for the access network device to perform transmission control on the first data packet group, or used to instruct the access network device to perform transmission control on the first data packet group. Packet group for transmission control.
  • the network device obtains the relevant information of the first data packet group, and carries the relevant information of the first data packet group in the data packets of the first data packet group and transmits it to the access network device, so that the access network device Transmission control can be performed on the first data packet group based on the relevant information of the first data packet group, thereby realizing transmission control according to the granularity of the data packet group, which helps to improve the transmission efficiency of the data packets and the user experience.
  • the downlink transmission time window information of the first data packet group indicates the maximum available duration of the first data packet group from being generated to being transmitted to the terminal device, so that a data packet group can be sent to the terminal device within a time window. , which can meet the needs of low-latency services and further improve the user's service experience.
  • the network device receives the one or more data packets from the application function network element.
  • the network device caches N data packets in the first data packet group, where N is an integer greater than 1; the network device sends the first data to the access network device
  • the data packets of the packet group include: the network device acquires the buffered N data packets, and sends the N data packets to the access network device.
  • the network device obtains the quantity information of the first data packet group from the received one or more data packets; the network device obtains the quantity information of the first data packet group according to the first data packet group , and determine the number N of data packets of the first data packet group to be buffered.
  • the network device determines the N pieces of data according to the information used to indicate the generation time of the first data packet group and the downlink transmission time window information of the first data packet group Packet cache time.
  • the network device obtains the quantity information of the first data packet group from the received one or more data packets; the network device obtains the quantity information of the first data packet group from the received second service data Obtain the identifier of the second data packet group, the quantity information of the second data packet group, and the generation time used to indicate the second data packet group from one or more data packets of the second data packet group of the flow information and downlink transmission time window information of the second data packet group; the network device is used to indicate the first data packet group quantity information, the second data packet group quantity information Generation time information of a data packet group, information used to indicate the generation time of the second data packet group, downlink transmission time window information of the first data packet group, and downlink transmission of the second data packet group time window information, to determine the scheduling priority of the first data packet group; the network device sending the data packets of the first data packet group to the access network device includes: the network device according to the first data packet The scheduling priority of the packet group is to send the data packets of the first data packet group to the access
  • the multiple terminal devices when multiple terminal devices have different processing capabilities, the multiple terminal devices can be kept synchronized through the control of the network device, thereby improving the user's service experience.
  • a data packet group can also be sent to a terminal device within a time window, so as to meet the requirements of low-latency services and further improve the user's service experience.
  • the network device is based on quantity information of the first data packet group, quantity information of the second data packet group, downlink transmission time window information of the first data packet group, and The downlink transmission time window information of the second data packet group, and determining the scheduling priority of the first data packet group includes: the network device according to the quantity information of the first data packet group and the first service the rate of the data flow, determining the processing time of the first data packet group; and according to the processing time of the first data packet group, the information used to indicate the generation time of the first data packet group and the first
  • the downlink transmission time window information of the data packet group determines the remaining transmission time of the first data packet group; the network device determines the quantity information of the second data packet group and the rate of the second service data stream to determine processing time of the second data packet group; and downlink transmission according to the processing time of the second data packet group, the information used to indicate the generation time of the second data packet group and the second data packet group time window information to determine the remaining transmission time of the second data packet group; the network device
  • the network device receives indication information, where the indication information is used to instruct the first service data flow to perform packet group granularity transmission control.
  • the indication information comes from a session management network element or a policy control network element.
  • an embodiment of the present application provides a method for transmitting a service data stream, including: an access network device obtains, from at least one received data packet, information used to indicate the generation time of the first data packet group and the Downlink transmission time window information of the first data packet group, the at least one data packet is a data packet of the first data packet group of the first service data stream, and the first service data stream includes at least two data packet groups, so The first data packet group is one of the at least two data packet groups; the access network device is based on the information used to indicate the generation time of the first data packet group and the Downlink transmission time window information, to determine the remaining transmission time of the first data packet group; the access network device sends the first data packet group to the terminal device according to the remaining transmission time of the first data packet group. data pack.
  • the access network device obtains the relevant information of the first data packet group, so that it can control the transmission of the first data packet group based on the relevant information of the first data packet group, so as to realize the transmission according to the granularity of the data packet group Control, which helps to improve the transmission efficiency of data packets and improve the user experience.
  • the downlink transmission time window information of the first data packet group indicates the maximum available duration of the first data packet group from being generated to being transmitted to the terminal device, so that a data packet group can be sent to the terminal device within a time window. , which can meet the needs of low-latency services and further improve the user's service experience.
  • the access network device obtains quantity information of the first data packet group from the received at least one data packet; the access network device obtains the quantity information of the first data packet group according to the first data packet.
  • the quantity information of the packet group and the remaining transmission time of the first data packet group determine the modulation and coding scheme corresponding to the first data packet group; the access network device determines the remaining transmission time of the first data packet group according to the , sending the data packets of the first data packet group to the terminal device, comprising: the access network device according to the modulation and coding scheme corresponding to the first data packet group and the remaining transmission of the first data packet group time, and send the data packets of the first data packet group to the terminal device.
  • the access network device determines the modulation corresponding to the first data packet group according to the quantity information of the first data packet group and the remaining transmission time of the first data packet group A coding scheme, comprising: the access network device determining, according to the quantity information of the first data packet group and the remaining transmission time of the first data packet group, a previously received data packet in the first data packet group The first modulation and coding scheme corresponding to the first part of the data packet and the second modulation and coding scheme corresponding to the second part of the data packet received later in the first data packet group; wherein, the level of the first modulation and coding scheme is lower than the level of the second modulation and coding scheme; the access network device sends the first terminal to the first terminal according to the modulation and coding scheme corresponding to the first data packet group and the remaining transmission time of the first data packet group
  • Sending the data packets of the first data packet group by the device includes: the access network device sending the data packets to the terminal device according to the first modulation and coding scheme and the remaining
  • the access network device obtains, from at least one received data packet, the information used to indicate the generation time of the second data packet group and the downlink transmission time of the second data packet group window information, the at least one data packet is a data packet of the second data packet group of the second service data flow; the access network device according to the information used to indicate the generation time of the second data packet group and The downlink transmission time window information of the second data packet group determines the remaining transmission time of the second data packet group; the access network device determines the remaining transmission time of the second data packet group according to the remaining transmission time of the first data packet group and the second data packet the remaining transmission time of the group, and determine the scheduling priority of the first data packet group; the access network device sends the first data packet to the terminal device according to the remaining transmission time of the first data packet group data packets of the group, including: the access network device sending the first data packet to the terminal device according to the scheduling priority of the first data packet group and the remaining transmission time of the first data packet group group of packets.
  • the multiple terminal devices when multiple terminal devices have different processing capabilities, the multiple terminal devices can be kept synchronized through the control of the access network device, thereby improving the user's service experience.
  • a data packet group can also be sent to the terminal device within a time window, so as to meet the requirements of low-latency services and further improve the user's service experience.
  • the access network device receives indication information, where the indication information is used to instruct to perform transmission control of the packet group granularity on the first service data flow.
  • the indication information comes from a session management network element, a network device or a policy control network element, or the like.
  • an embodiment of the present application provides a method for transmitting a service data stream, including: an identifier of a first data packet group of a first service data stream generated by an application function network element, an identifier used to indicate the first data packet group Generation time information and downlink transmission time window information of the first data packet group, the first service data stream includes at least two data packet groups, and the first data packet group is the at least two data packet groups one of; the application function network element sends the data packet of the first data packet group to the network device, and the data packet of the first data packet group is sent together with the identifier of the first data packet group, One or more data packets of the first data packet group carry the identifier of the first data packet group, the information used to indicate the generation time of the first data packet group, and the downlink of the first data packet group Transmission time window information.
  • the application function network element generates relevant information of the first data packet group, the relevant information of the first data packet group is used to indicate the characteristic information of the first data packet group, and the relevant information of the first data packet group is carried in the One or more data packets of the first data packet group are transmitted to the network device, so that the network device can perform transmission control on the first data packet group based on the relevant information of the first data packet group, so as to realize the granularity of the data packet group. Transmission control helps to improve packet transmission efficiency and user experience.
  • the downlink transmission time window information of the first data packet group indicates the maximum available duration of the first data packet group from generation to transmission to the terminal device, so that a data packet group can be sent to the terminal device within a time window. , which can meet the needs of low-latency services and further improve the user's service experience.
  • one or more data packets of the first data packet group further include quantity information of the first data packet group.
  • the application function network element is based on the generation time of the sensing data of the terminal device, the estimated duration of processing the first data packet group by the terminal device, and the The generation time is to determine the downlink transmission time window information of the first data packet group.
  • an embodiment of the present application provides a communication apparatus, and the apparatus may be a network device or a chip used for the network device.
  • the apparatus has the function of implementing any implementation method of the above-mentioned first aspect. This function can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present application provides a communication apparatus, and the apparatus may be an access network device or a chip used for the access network device.
  • the device has the function of implementing any implementation method of the second aspect above. This function can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present application provides a communication device, where the device may be an application function network element, or a chip used for the application function network element.
  • the device has the function of implementing any implementation method of the third aspect above. This function can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present application provides a communication device, including a processor and a memory; the memory is used to store computer instructions, and when the device runs, the processor executes the computer instructions stored in the memory, so that the device executes Any implementation method of the above-mentioned first aspect to the third aspect.
  • an embodiment of the present application provides a communication apparatus, including a unit or means for executing each step of any of the implementation methods in the first to third aspects.
  • an embodiment of the present application provides a communication device, including a processor and an interface circuit, where the processor is configured to communicate with other devices through the interface circuit, and execute any implementation method in the first to third aspects above.
  • the processor includes one or more.
  • an embodiment of the present application provides a communication device, including a processor, which is configured to be coupled to a memory, and the processor is configured to call a program stored in the memory to execute any implementation of the first to third aspects above.
  • the memory may be located within the device or external to the device.
  • the processor includes one or more.
  • the embodiments of the present application further provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, when the computer-readable storage medium is run on a computer, the above-mentioned first to third aspects are Any implementation method is executed.
  • embodiments of the present application further provide a computer program product, where the computer program product includes a computer program, and when the computer program runs, any implementation method in the above-mentioned first to third aspects is executed.
  • an embodiment of the present application further provides a chip system, including: a processor configured to execute any implementation method in the first aspect to the third aspect.
  • an embodiment of the present application further provides a communication system, including a network device for executing any implementation method in the first aspect, and an access network device for executing any implementation method in the second aspect.
  • the communication system further includes an application function network element for executing any implementation method in the third aspect.
  • an embodiment of the present application further provides a communication system, including a network device for executing any implementation method in the first aspect, and an application function network element for executing any implementation method in the third aspect.
  • FIG. 1(a) is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 1(b) is a schematic diagram of a communication system provided by an embodiment of the present application.
  • Figure 2(a) is a schematic diagram of a 5G network architecture based on a service-oriented architecture
  • Figure 2(b) is a schematic diagram of a 5G network architecture based on a point-to-point interface
  • FIG. 3 is a schematic diagram of a method for transmitting a service data stream provided by an embodiment of the present application
  • FIG. 4 is a schematic diagram of another method for transmitting a service data stream provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another method for transmitting a service data stream provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of another method for transmitting service data flow provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another communication apparatus provided by an embodiment of the present application.
  • the present application provides a communication system, which includes an access network device and a network device.
  • the system further includes an application function network element.
  • a network device configured to obtain, from one or more received data packets, the identifier of the first data packet group, the information used to indicate the generation time of the first data packet group, and the downlink of the first data packet group Transmission time window information, the one or more data packets are data packets of the first data packet group of the first service data stream, the first service data stream includes at least two data packet groups, the first service data stream The data packet group is one of the at least two data packet groups; and, for sending the data packets of the first data packet group to the access network device, the data packets of the first data packet group are the same as the data packets of the first data packet group.
  • the generation time information and the downlink transmission time window information of the first data packet group are sent together.
  • the access network device is configured to receive data packets of the first data packet group from the network device.
  • the system shown in Figure 1(a) can be used in the 5th generation (5G) network architecture shown in Figure 2(a) or Figure 2(b), of course, it can also be used in future network architectures, such as The sixth generation (6th generation, 6G) network architecture, etc., is not limited in this application.
  • 5G 5th generation
  • 6G 6th generation
  • the present application provides a communication system, which includes an application function network element and a network device.
  • the system shown in Figure 1(b) can be used in the 5G network architecture shown in Figure 2(a) or Figure 2(b), of course, it can also be used in future network architectures, such as 6G network architectures, etc. This application does not Do limit.
  • An application function network element used to generate the identifier of the first data packet group of the first service data stream, the information used to indicate the generation time of the first data packet group, and the downlink transmission time window of the first data packet group information, the first service data stream includes at least two data packet groups, and the first data packet group is one of the at least two data packet groups; sending the data of the first data packet group to the network device packet, the data packets of the first data packet group are sent together with the identifier of the first data packet group, and one or more data packets of the first data packet group carry the identifier, information used to indicate the generation time of the first data packet group, and downlink transmission time window information of the first data packet group.
  • a network device configured to obtain, from one or more received data packets, the identifier of the first data packet group, the information used to indicate the generation time of the first data packet group, and the first data packet group downlink transmission time window information.
  • FIG. 2(a) is a schematic diagram of a 5G network architecture based on a service-oriented architecture.
  • the network element or entity corresponding to the network device in Fig. 1(a) or Fig. 1(b) may be a user plane function (UPF) network element in the 5G network architecture shown in Fig. 2(a),
  • the network element or entity corresponding to the access network device in FIG. 1(a) may be a radio access network (radio access network, RAN) device in the 5G network architecture shown in FIG. 2(a).
  • the network element or entity corresponding to the application function network element in Fig. 1(a) or Fig. 1(b) may be an application function (application function, AF) network element in the 5G network architecture shown in Fig. 2(a).
  • the 5G network architecture shown in Figure 2(a) can include three parts, namely the terminal equipment part, the data network (DN) and the operator network part. The following briefly describes the functions of some of the network elements.
  • the operator network may include one or more of the following network elements: an authentication server function (AUSF) network element, a network exposure function (NEF) network element, a policy control function (policy control function) function, PCF) network element, unified data management (unified data management, UDM), unified database (unified data repository, UDR), network storage function (network repository function, NRF) network element, access and mobility management function (access and mobility management function, AMF) network elements, session management function (session management function, SMF) network elements, RAN and UPF network elements, etc.
  • AUSF authentication server function
  • NEF network exposure function
  • policy control function policy control function
  • PCF policy control function
  • UDM unified data management
  • UDR unified database
  • NRF network storage function
  • access and mobility management function access and mobility management function
  • SMF session management function
  • RAN and UPF network elements etc.
  • the part other than the radio access network part may be referred to as the core network part.
  • the AF network element shown in Fig. 2(a) may be an AF network element within the operator's network, or an AF network element outside the operator's network (such as a third-party server, etc.).
  • the terminal device in this embodiment of the present application may be a device for implementing a wireless communication function.
  • the terminal equipment may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station in a 5G network or a public land mobile network (PLMN) evolved in the future.
  • UE user equipment
  • PLMN public land mobile network
  • remote station remote terminal
  • mobile device wireless communication device
  • terminal agent or terminal device etc.
  • 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. Terminals can be mobile or stationary.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • 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,
  • the above-mentioned terminal device can establish a connection with the operator network through an interface (eg, N1, etc.) provided by the operator network, and use the data and/or voice services provided by the operator network.
  • the terminal device can also access the DN through the operator's network, and use the operator's service deployed on the DN and/or the service provided by a third party.
  • the above-mentioned third party may be a service party other than the operator's network and the terminal device, and may provide other data and/or voice services for the terminal device.
  • the specific expression form of the above third party can be specifically determined according to the actual application scenario, and is not limited here.
  • RAN is a sub-network of an operator's network, and is an implementation system between service nodes and terminal equipment in the operator's network.
  • the terminal device To access the operator's network, the terminal device first passes through the RAN, and then can be connected to the service node of the operator's network through the RAN.
  • the RAN device in this application is a device that provides a wireless communication function for a terminal device, and the RAN device is also called an access network device.
  • the RAN equipment in this application includes but is not limited to: next-generation base station (g nodeB, gNB), evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B in 5G (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 base station g nodeB, gNB
  • evolved node B evolved node B
  • eNB evolved node B
  • RNC radio network controller
  • node B in 5G node B, NB
  • base station controller BSC
  • base transceiver station base transceiver station
  • BTS home base station
  • base station for example, home
  • the AMF network element mainly performs functions such as mobility management, access authentication or authorization. In addition, it is also responsible for transferring user policies between UE and PCF.
  • the SMF network element mainly performs functions such as session management, execution of control policies issued by PCF, selection of UPF, and allocation of UE Internet Protocol (IP) addresses.
  • IP Internet Protocol
  • the UPF network element as the interface UPF with the data network, completes functions such as user plane data forwarding, session/flow-level accounting statistics, and bandwidth limitation.
  • the UDM network element is mainly responsible for the management of contract data, user access authorization and other functions.
  • UDR is mainly responsible for the access function of contract data, policy data, application data and other types of data.
  • the NEF network element is mainly used to support the opening of capabilities and events.
  • the AF network element mainly conveys the requirements of the application side to the network side, such as quality of service (QoS) requirements or user status event subscriptions.
  • the AF can be a third-party functional entity or an application service deployed by an operator, such as an IP multimedia subsystem (IP multimedia subsystem, IMS) voice call service.
  • IP multimedia subsystem IP multimedia subsystem, IMS
  • the AF network element may also be called an application server.
  • the PCF network element is mainly responsible for policy control functions such as charging for sessions and service data flow levels, QoS bandwidth guarantee and mobility management, and UE policy decision-making.
  • the NRF network element can be used to provide the network element discovery function, and provide network element information corresponding to the network element type based on the request of other network elements.
  • NRF also provides network element management services, such as network element registration, update, de-registration, and network element status subscription and push.
  • AUSF network element It is mainly responsible for authenticating users to determine whether to allow users or devices to access the network.
  • a DN is a network outside the operator's network.
  • the operator's network can access multiple DNs, and multiple services can be deployed on the DNs, which can provide data and/or voice services for terminal devices.
  • DN is the private network of a smart factory.
  • the sensors installed in the workshop of the smart factory can be terminal devices, and the control server of the sensor is deployed in the DN, and the control server can provide services for the sensor.
  • the sensor can communicate with the control server, obtain the instruction of the control server, and transmit the collected sensor data to the control server according to the instruction.
  • the DN is an internal office network of a company.
  • the mobile phones or computers of employees of the company can be terminal devices, and the mobile phones or computers of employees can access information and data resources on the internal office network of the company.
  • Nausf, Nnef, Npcf, Nudm, Naf, Namf, Nsmf, N1, N2, N3, N4, and N6 are interface serial numbers.
  • interface serial numbers refer to the meanings defined in the 3GPP standard protocol, which is not limited here.
  • Fig. 1(a) is applied to a 5G network architecture, as shown in Fig. 2(b), which is a schematic diagram of a 5G network architecture based on a service-oriented architecture.
  • the network element or entity corresponding to the network device in Fig. 1(a) or Fig. 1(b) may be the UPF network element in the 5G network architecture shown in Fig. 2(b), and the access in Fig. 1(a)
  • the network element or entity corresponding to the network device may be a RAN device in the 5G network architecture shown in FIG. 2(b).
  • the network element or entity corresponding to the application function network element in FIG. 1(a) or FIG. 1(b) may be the AF network element in the 5G network architecture shown in FIG. 2(b).
  • N7 the interface between the PCF and the SMF, used to issue a protocol data unit (protocol data unit, PDU) session granularity and a business data flow granularity control policy.
  • protocol data unit protocol data unit
  • N15 the interface between the PCF and the AMF, used for delivering UE policies and access control related policies.
  • N5 the interface between the AF and the PCF, used for application service request delivery and network event reporting.
  • N4 The interface between the SMF and the UPF, used to transmit information between the control plane and the user plane, including controlling the distribution of forwarding rules for the user plane, QoS control rules, traffic statistics rules, etc., and information on the user plane report.
  • N11 the interface between the SMF and the AMF, used to transfer the PDU session tunnel information between the RAN and the UPF, the control message sent to the UE, the radio resource control information sent to the RAN, and the like.
  • N2 the interface between the AMF and the RAN, used to transmit radio bearer control information from the core network side to the RAN, etc.
  • N1 the interface between the AMF and the UE, irrespective of access, used to deliver QoS control rules and the like to the UE.
  • N8 the interface between the AMF and the UDM, for the AMF to obtain the access and mobility management related subscription data and authentication data from the UDM, and the AMF to register the UE's current mobility management related information to the UDM.
  • N10 the interface between the SMF and the UDM, for the SMF to obtain the session management related subscription data from the UDM, and the SMF to register the UE's current session related information to the UDM.
  • N35 an interface between the UDM and the UDR, used for the UDM to obtain user subscription data information from the UDR.
  • N36 an interface between the PCF and the UDR, for the PCF to obtain the policy-related subscription data and application data-related information from the UDR.
  • N12 the interface between the AMF and the AUSF, used for the AMF to initiate an authentication process to the AUSF, which can carry a subscription concealed identifier (Subscription Concealed Identifier, SUCI) as a subscription identifier;
  • SUCI Subscribed Identifier
  • N13 the interface between the UDM and the AUSF, for the AUSF to obtain the user authentication vector from the UDM to execute the authentication process.
  • network elements or functions may be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (eg, a cloud platform).
  • a platform eg, a cloud platform
  • the foregoing network element or function may be implemented by one device, or may be implemented jointly by multiple devices, or may be a functional module in one device, which is not specifically limited in this embodiment of the present application.
  • the session management network elements, network equipment, access network equipment, and application function network elements in the embodiments of this application may be SMF, UPF, RAN, and AF in FIG. 2(a) or FIG. 2(b), respectively, or may be This application does not limit the network elements having the functions of the above-mentioned SMF, UPF, RAN, and AF in future communications, such as 6G networks.
  • the present application takes as an example that the session management network element, the network device, the access network device, and the application function network element are the above-mentioned SMF, UPF, RAN, and AF, respectively.
  • UPF when UPF receives downlink packets, UPF will filter packets with the same reliability requirements (packet detection rule, PDR) pre-configured by SMF. packets) are encapsulated into the same QoS flow.
  • Multiple QoS flows may exist in the same PDU session (PDU session), but each QoS flow has an independent and unique QoS flow identifier (QoS flow identifier, QFI), and each QoS flow is associated with a QoS configuration file (QoS flow identifier, QFI). profile).
  • QFI QoS flow identifier
  • QFI QoS configuration file
  • the network side will use the same QoS guarantee for packets belonging to the same QoS flow according to the parameters in the QoS profile, such as delay, forwarding priority, packet loss rate, etc.
  • the RAN When the RAN receives the downlink QoS flow from the UPF, the RAN will encapsulate multiple QoS flows into the same Data Radio Bearer (DRB) according to certain mapping rules, and the same DRB will enjoy the same reliability on the air interface side Assure.
  • DRB Data Radio Bearer
  • UPF and RAN schedule service data flows according to packet granularity based on the configured scheduling policy.
  • joint scheduling of multiple data packets of the same service data flow needs to be considered.
  • AR augmented reality
  • AR applications are the potential main applications supported by 5G networks, which can be used in individual consumer scenarios, such as real-time augmented reality experiences in exhibition halls and educational scenarios, multi-person AR games and conferences, etc. AR can also be used in business-oriented applications, such as AR-assisted device assembly.
  • a complete process of interaction between a terminal device and an AR server includes the following processes:
  • Time T1 The terminal device generates sensing data (for example, including user head motion information, user perspective information, real-time images or videos, etc.) and sends the sensing data to the AR server via RAN and UPF;
  • sensing data for example, including user head motion information, user perspective information, real-time images or videos, etc.
  • the time interval between the terminal device generating the sensing data and sending the sensing data is very short and can be ignored.
  • Time T2 The AR server receives the perception data and starts to process the perception data.
  • the processing of the perception data includes, for example, rendering, generating and encoding corresponding AR media data according to the perceptual data such as the user's head motion information and the user's perspective information, and obtaining an AR object.
  • Time T3 the AR server completes the processing of the sensing data and generates a data packet group, where the data packet group includes multiple data packets; and then sends the data packet group to the terminal device via the UPF and the RAN.
  • the time interval between the AR server generating the data packet group and sending the data packet group is very short and can be ignored.
  • Time T4 the terminal device receives the data packet group, and starts to process the data packets of the data packet group (for example, including decoding, presentation, etc.).
  • Time T5 the terminal device completes the processing of the data packets of a data packet group.
  • An AR object can correspond to a data packet group, and a data packet group includes multiple data packets.
  • a data packet group includes multiple data packets.
  • the AR object may correspond to a data packet group.
  • an AR object can correspond to multiple packet groups.
  • the front part of the table corresponds to one data packet group
  • the back part corresponds to another data packet group, and so on.
  • multiple AR objects correspond to a data packet group.
  • a data packet group exemplary, take an AR object as a table and another AR object as a chair, and the table and chair correspond to a data packet group. That is, the data packet group is used to transmit the data packets corresponding to the table and chair.
  • the part of each AR object among the multiple AR objects corresponds to a data packet group.
  • the front of the table and the front of the chair correspond to a data packet group.
  • the front of the table and chairs correspond to a packet group.
  • the front of the chair and the table correspond to a packet group.
  • one data packet group in this embodiment of the present application may correspond to part or all of one or more AR objects.
  • a service data flow contains one or more data packet groups, a data packet group is composed of multiple data packets, and a data packet group can be indicated by an identifier of a data packet group.
  • the identifiers of different data packet groups of the same service data flow may be the same or different, for example, the identifiers of two adjacent data packet groups may be different, and the identifiers of two non-adjacent data packet groups may be the same or different.
  • a service data flow can be used to transmit data packet groups corresponding to one or more AR objects.
  • the time between when the terminal device starts reporting the sensing data that is, the aforementioned time T1 to when the terminal device completes the processing of the data packets of one data packet group (that is, the aforementioned time T5) does not exceed one time.
  • the preset maximum delay eg 70ms.
  • the time spent on uplink transmission of different sensing data that is, the difference between T2 and T1 may be different.
  • the time (that is, the difference between the above-mentioned T3 and T2) may be different, and the time it takes for the terminal device to process the data packets of different data packet groups (that is, the above-mentioned difference between T5 and T4) may also be different, which will lead to different interaction processes. , the remaining time for downlink transmission of different data packet groups (ie, the difference between T4 and T3 above) may be different.
  • the preset maximum delay is 70ms.
  • the uplink transmission of sensing data takes 6ms
  • the terminal device is expected to process the data packets of the data packet group in 4ms
  • the AR server takes 50ms to generate the data packet group after processing the perception data, so the remaining time for the downlink transmission of the data packet group is 10ms, that is, the AR server needs to send the generated data packet group to the terminal device via UPF and RAN within 10ms.
  • the uplink transmission of perception data takes 6ms
  • the terminal device is expected to process the data packets of the data packet group in 4ms
  • the AR server takes 45ms to generate the data packet group after processing the perception data.
  • the remaining downlink transmission of the data packet group The time is 15ms, that is, the AR server needs to send the generated data packet group to the terminal device via UPF and RAN within 15ms.
  • the size of the time window is variable, that is, for different interaction processes, the size of the time window can be different.
  • different terminal devices may be out of sync.
  • multiple terminal devices participating in the game report the acquired perception data to the AR server, and the AR server generates a data packet group based on the received one or more perception data, and sends the data packet group at the same time. to multiple end devices.
  • there may be a time difference between images displayed by different terminal devices that is, different images viewed at the same time.
  • the service data flow refers to the service data flow from the AF (such as a third-party server), such as a media service data flow, and specifically, includes a video service data flow, a voice service data flow, and the like.
  • FIG. 3 a schematic diagram of a method for transmitting a service data stream provided by an embodiment of the present application, the method includes the following steps:
  • Step 301 the AF generates first information of the first data packet group of the first service data flow.
  • the AF here may be an AR server in an AR application, or may also be other third-party servers, or the like.
  • the first service data flow is a service data flow between the AF and the first terminal device, the service data flow includes one or more data packet groups, and one data packet group includes multiple data packets. Wherein, any one data packet group in the first service data stream is referred to as the first data packet group.
  • the first information includes an identifier of the first data packet group of the first service data stream, information used to indicate the generation time of the first data packet group, and downlink transmission time window information of the first data packet group.
  • the identifier of the first data packet group is used to identify the first data packet group.
  • the information used to indicate the generation time of the first data packet group may be indication information indicating the generation time of the first data packet group, or may also be the generation time of the first data packet group (that is, the generation time of the first data packet group). point in time).
  • the generation time of the first data packet group refers to the time when the AF generates the first data packet group after receiving the sensing data from the first terminal device and processing the sensing data.
  • the downlink transmission time window information of the first data packet group is used to indicate the maximum available time period from the generation of the first data packet group to the transmission to the first terminal device.
  • the AF may determine the first data packet group according to the generation time (ie, the time point of generation) of the sensing data of the first terminal device, the estimated duration of processing the first data packet group by the first terminal device, and the generation time of the first data packet group.
  • Downlink transmission time window information of a data packet group is used to indicate the maximum available time period from the generation of the first data packet group to the transmission to the first terminal device.
  • the AF may determine the first data packet group according to the generation time (ie, the time point of generation) of the sensing data of the first terminal device, the estimated duration of processing the first data packet group by the first terminal device, and the generation time of the first data packet group.
  • the generation time of the sensing data of the first terminal device is K1, and the first terminal device sends the sensing data of the first terminal device to the AF at the moment K1, the time when the AF receives the first data packet group is K2, and the time when the AF receives the first data packet group is K2.
  • the generation time of a data packet group is K3, the estimated duration L1 for the first terminal device to process the first data packet group, and the preset maximum delay is L2, then the first data packet group is generated and transmitted to the first terminal device.
  • the maximum available duration L2-L1-(K2-K1)-(K3-K2), where K2-K1 represents the uplink transmission duration of the sensing data of the first terminal device sent from the first terminal device to the AF, K3-K2 Indicates the time taken by the AF from starting to process the sensing data of the first terminal device to generating the first data packet group according to the sensing data.
  • the first information further includes quantity information of the first data packet group.
  • the quantity information of the first data packet group is used to indicate the quantity of the first data packet group.
  • the quantity information of the first data packet group may be indication information indicating the quantity information of the first data packet group, or may also be the quantity of the first data packet group, or may also include the information of the first data packet group.
  • the number of the first data packet group can be obtained by calculating the total size of the first data packet group and the size of each data packet.
  • Step 302 the AF sends the data packets of the first data packet group to the UPF. Accordingly, the UPF receives the data packets of the first data packet group.
  • the first data packet group includes a plurality of data packets, and some or all of the data packets in the plurality of data packets carry the first information.
  • the first information may be carried in a header (such as a Real-time Transport Protocol (Real-time Transport Protocol, RTP) header) of the first data packet.
  • RTP Real-time Transport Protocol
  • each data packet of the first data packet group carries the first information.
  • each data packet of the first data packet group carries a part of the first information.
  • some data packets carry the identifier of the first data packet group and information used to indicate the generation time of the first data packet group
  • other data packets carry the downlink transmission time window information of the first data packet group and the information of the first data packet group.
  • quantity information For another example, some data packets carry the identifier of the first data packet group and information used to indicate the generation time of the first data packet group, some data packets carry the downlink transmission time window information of the first data packet group, and other parts of the data packets carry Number information of the first packet group, etc.
  • the first data packet or the first K data packets of the first data packet group carry the first information
  • other data packets carry the identifier of the first data packet group
  • K is an integer greater than 1.
  • the first information is carried in some data packets of the first data packet group (that is, the first or first K data packets of the first data packet group), and the first information is carried in other partial data packets of the first data packet group. Part of the information of the first information (that is, the identifier of the first data packet group) is carried in it, so that the overhead caused by the transmission of the first information can be reduced.
  • the first data packet group includes 60 data packets, the headers (eg, RTP headers) of the first 5 data packets carry the first information, and the packet headers of the last 55 data packets carry the identifier of the first data packet group.
  • each data packet in the first X data packets of the first data packet group carries part of the information in the first information, and other data packets carry the identifier of the first data packet group, where X is greater than An integer of 1.
  • the first data packet group includes 60 data packets, and the header (such as an RTP header) of the first data packet carries the identifier of the first data packet group and information used to indicate the generation time of the first data packet group, and the second data packet group
  • the header of each data packet carries the identifier of the first data packet group and the downlink transmission time window information of the first data packet group, and the header of the third data packet carries the identifier of the first data packet group and the quantity information of the first data packet group , and the headers of the other 57 data packets carry the identifier of the first data packet group.
  • the first data packet group includes 60 data packets, and the packet header (such as the RTP header) of the first data packet carries the identifier of the first data packet group, the information used to indicate the generation time of the first data packet group, and the first data packet group.
  • Downlink transmission time window information of a data packet group the header of the second data packet carries the identifier of the first data packet group and information used to indicate the generation time of the first data packet group, and the header of the third data packet carries the first data packet group.
  • the header of the fourth data packet carries the identifier of the first data packet group and the quantity information of the first data packet group, the other 56 data packets
  • the header carries the identifier of the first data packet group, and so on.
  • the AF Based on the above steps 301 to 302, the AF generates the first information, the first information is used to indicate the characteristic information of a data packet group, and the first information is carried in the data packets of the first data packet group and transmitted to the UPF, so that The UPF can perform transmission control on the first data packet group based on the first information, so as to implement transmission control according to the granularity of the data packet group, which helps to improve data packet transmission efficiency and user experience.
  • Step 303 the UPF obtains the first information of the first data packet group of the first service data flow.
  • the UPF may obtain the first information from one or more received data packets.
  • the one or more data packets are data packets of the first data packet group of the first service data flow.
  • the UPF may also receive indication information from the SMF, PCF or other network elements, where the indication information is used to instruct the first service data flow to perform packet group granularity transmission control. Therefore, the UPF executes the above-mentioned step 303 according to the indication information.
  • Step 304 the UPF sends the data packets of the first data packet group to the RAN.
  • the RAN receives the data packets of the first data packet group.
  • the first information is carried in at least one data packet of the first data packet group sent by the UPF to the RAN.
  • the UPF may carry the first information in all data packets of the first data packet group sent to the RAN; or, carry the first information in the first data packet; or, carry the first information in the first M data packets
  • M is an integer greater than 1.
  • M and the aforementioned K may be the same or different.
  • the first information may be carried in a packet header of a data packet of the first data packet group.
  • the packet header here may be, for example, a GPRS Tunneling Protocol (GTP) header, where GPRS is an abbreviation for General packet radio service.
  • GTP GPRS Tunneling Protocol
  • the first data packet group includes 60 data packets, the headers (eg, GTP headers) of the first 10 data packets carry the first information, and the packet headers of the last 50 data packets carry the identifier of the first data packet group.
  • the UPF can add a layer of GTP header to the data packet, and the GTP header can carry the first information or carry the identifier of the first data packet group . Then, the UPF sends the data packets of the first data packet group to the RAN. That is, the data packets of the first data packet group sent by the UPF to the RAN may carry the first information or the identifier of the first data packet group at the RTP layer, and also carry the first information or the identifier of the first data packet group at the GTP layer. logo.
  • each data packet of the first data packet group received by the UPF from the AF is sent to the RAN together with the identifier of the first data packet group, that is, each data packet sent to the RAN carries at least There is an identification of the first packet group.
  • one or more data packets of the first data packet group received by the UPF from the AF are sent to the RAN together with the first information, that is, the UPF may only receive part of the data packets of the first data packet group The first information is added and then sent to the RAN.
  • the UPF may also delete the first information or the identifier of the first data packet group in the RTP header, and only carry the first information or the identifier of the first data packet group in the GTP header.
  • the RAN may perform integrity transmission control of the first packet group based on the received first information.
  • the UPF when receiving the data packets of the first data packet group, the UPF does not immediately send the data packets to the RAN, but buffers the received data packets, and then stores the buffered data packets according to the Sent to the RAN at a certain rate. For example, the UPF buffers N data packets in the first data packet group, where N is an integer greater than 1, and then the UPF obtains the buffered N data packets and sends the N data packets to the RAN. Based on this method, it is helpful to avoid the traffic impact caused by the RAN receiving a large number of data packets from the UPF in a short time, or the waste of resources caused by not receiving the data packets from the UPF for a long time.
  • the UPF may determine the buffering time of the N data packets according to the information used to indicate the generation time of the first data packet group and the downlink transmission time window information of the first data packet group. For example, the UPF may determine the remaining transmission time of the first data packet group according to the information used to indicate the generation time of the first data packet group and the downlink transmission time window information of the first data packet group, and then according to the information of the first data packet group The remaining transmission time determines the buffering time of the N data packets, for example, the set ratio of the remaining transmission time of the first data packet group is determined as the buffering time of the N data packets.
  • the downlink transmission time window information of the first data packet group indicates that the AF needs to send the first data packet group to the first terminal device within 20ms
  • the information used to indicate the generation time of the first data packet group indicates that The AF generates and sends the first data packet group at time P1, and the UPF receives the first data packet group at time P2, then the UPF needs to send the first data packet group to the first terminal within the duration of 20-(P2-P1) device, where P2-P1 represents the delay experienced by the first data packet group being transmitted from the AF to the UPF.
  • the remaining transmission time of the first data packet group is equal to 20-(P2-P1).
  • the UPF obtains the first information, and transmits the first information in the data packets of the first data packet group to the RAN, so that the RAN can transmit the first data packet group based on the first information Therefore, the transmission control is realized according to the granularity of the data packet group, which helps to improve the transmission efficiency of the data packets and improve the user experience.
  • the downlink transmission time window information of the first data packet group indicates the maximum available duration of the first data packet group from being generated to being transmitted to the terminal device, so that a data packet group can be sent to the terminal device within a time window. , which can meet the needs of low-latency services and further improve the user's service experience.
  • Step 305 The RAN determines the remaining transmission time of the first data packet group according to the information used to indicate the generation time of the first data packet group and the downlink transmission time window information of the first data packet group.
  • the downlink transmission time window information of the first data packet group indicates that the AF needs to send the first data packet group to the first terminal device within 20ms
  • the information used to indicate the generation time of the first data packet group indicates that The AF generates and sends the first data packet group at time P1
  • the RAN receives the first data packet group at time P3, then the RAN needs to send the first data packet group to the first terminal within the duration of 20-(P3-P1) equipment, wherein P3-P1 represents the delay experienced by the transmission of the first data packet group from the AF to the RAN. That is, the remaining transmission time of the first data packet group is equal to 20-(P3-P1).
  • the remaining transmission time of the first data packet group here refers to the maximum available time period for the RAN to transmit the first data packet group to the first terminal device.
  • the remaining transmission time of the first data packet group also includes the time for processing the first data packet group within the RAN.
  • the RAN may also receive indication information from the SMF, UPF, PCF or other network elements, where the indication information is used to instruct the first service data flow to perform packet-group granularity transmission control. Therefore, the RAN executes the above-mentioned step 305 according to the indication information.
  • Step 306 the RAN sends the data packets of the first data packet group to the first terminal device according to the remaining transmission time of the first data packet group.
  • the first terminal device receives the data packets of the first data packet group.
  • the RAN needs to transmit the data packets of the first data packet group to the first terminal device within the remaining transmission time of the first data packet group, so that the delay requirement of the service data flow can be met.
  • the RAN can determine the modulation and coding scheme (Modulation and Coding Scheme, MCS) corresponding to the first data packet group according to the quantity information of the first data packet group and the remaining transmission time of the first data packet group, and then according to The modulation and coding scheme corresponding to the first data packet group and the remaining transmission time of the first data packet group are used to send the data packets of the first data packet group to the first terminal device.
  • MCS Modulation and Coding Scheme
  • a higher-level modulation and coding scheme can be determined, so that the RAN can increase the transmission rate of the data packet and ensure the first The data packets of a data packet group can be transmitted to the first terminal within the remaining transmission time of the first data packet group.
  • the RAN Since the RAN sends the first data packet group to the first terminal device during the remaining transmission time of the first data packet group, the data packets sent earlier have more remaining time, and the data packets sent later have less remaining time , so in order to enable the data packets of the first data packet group (especially the data packets that are later in timing) to be successfully transmitted to the first terminal device within the remaining transmission time of the first data packet group, the RAN may
  • the data packets in the data packet group are divided into two or more data packet subgroups according to the time sequence, and then each data packet subgroup corresponds to a modulation and coding scheme, and the modulation and coding scheme corresponding to the data packet subgroup with the earlier timing sequence
  • the level of is lower than the level of the modulation and coding scheme corresponding to the subgroup of data packets that follow the sequence.
  • the RAN determines, according to the quantity information of the first data packet group and the remaining transmission time of the first data packet group, the previously received No.
  • the first modulation and coding scheme corresponding to a part of the data packets corresponds to the second part of the data packets (that is, the second sub-group of data packets) received later in the first data packet group.
  • the second modulation and coding scheme wherein, the level of the first modulation and coding scheme is lower than the level of the second modulation and coding scheme, and then the RAN sends to the first terminal equipment according to the first modulation and coding scheme and the remaining transmission time of the first data packet group
  • the first part of the data packets of the first data packet group, and the second part of the data packets of the first data packet group is sent to the first terminal device according to the second modulation and coding scheme and the remaining transmission time of the first data packet group.
  • the RAN receives the data packets of the first data packet group, and obtains the first information, so that the transmission control can be performed on the first data packet group based on the first information, so as to realize the transmission control of the first data packet group according to the data packet group.
  • Granular transmission control helps to improve data packet transmission efficiency and user experience.
  • the downlink transmission time window information of the first data packet group indicates the maximum available duration of the first data packet group from being generated to being transmitted to the terminal device, so that a data packet group can be sent to the terminal device within a time window. , which can meet the needs of low-latency services and further improve the user's service experience.
  • UPF receives data packet groups from AF that need to be sent to different terminal devices, UPF can determine the downlink transmission time window information of different data packet groups based on the integrity transmission information carried in the data packets of different data packet groups, so as to ensure the terminal Synchronization between devices. For convenience of description, the following description is given by taking synchronization between two terminal devices as an example.
  • FIG. 4 a schematic diagram of another method for transmitting a service data stream provided by an embodiment of the present application, the method includes the following steps:
  • Step 401 the AF generates first information of the first data packet group of the first service data flow.
  • This step 401 is the same as the above-mentioned step 301, and reference may be made to the foregoing description.
  • Step 402 the AF generates the second information of the second data packet group of the second service data flow.
  • This step 402 is similar to the above-mentioned step 401, and reference may be made to the foregoing description.
  • the second information includes the identifier of the second data packet group of the second service data stream, the information used to indicate the generation time of the second data packet group, and the downlink transmission time window information of the second data packet group.
  • the second The information also includes quantity information of the second data packet group. The meaning of each parameter in the second information is similar to the meaning of each parameter in the first information, and reference may be made to the foregoing description, which will not be repeated.
  • the second service data flow is a service data flow between the AF and the second terminal device, the service data flow includes one or more data packet groups, and one data packet group includes multiple data packets.
  • any one data packet group in the second service data stream is referred to as a second data packet group, and the second data packet group corresponds to the above-mentioned first data packet group.
  • the packets of the packet group carry the same data content.
  • the identification of the first data packet group is the same as the identification of the second data packet group
  • the information used to indicate the generation time of the first data packet group is the same as the information used to indicate the generation time of the second data packet group
  • the quantity information of the first data packet group is the same as the quantity information of the second data packet group, but the downlink transmission time window information of the first data packet group is different from the downlink transmission time window information of the second data packet group.
  • Step 403 the AF sends the data packets of the first data packet group to the UPF. Accordingly, the UPF receives the data packets of the first data packet group.
  • This step 403 is the same as the above-mentioned step 302, and reference may be made to the foregoing description.
  • Step 404 the AF sends the data packets of the second data packet group to the UPF. Accordingly, the UPF receives the data packets of the second data packet group.
  • This step 404 is similar to the above-mentioned step 403, and reference may be made to the foregoing description.
  • Step 405 the UPF obtains the first information of the first data packet group of the first service data flow.
  • This step 401 is the same as the above-mentioned step 303, and reference may be made to the foregoing description.
  • Step 406 the UPF obtains the second information of the second data packet group of the second service data flow.
  • This step 406 is similar to the above-mentioned step 405, and reference may be made to the foregoing description.
  • Step 407 the UPF sends the data packets of the first data packet group to the RAN.
  • the RAN receives the data packets of the first data packet group.
  • Step 408 the UPF sends the data packets of the second data packet group to the RAN.
  • the RAN receives the data packets of the second data packet group.
  • the implementation method of the above-mentioned steps 407 and 408 may be: UPF according to the quantity information of the first data packet group, the quantity information of the second data packet group, the downlink transmission time window information of the first data packet group and the second data packet group.
  • the downlink transmission time window information determines the scheduling priority of the first data packet group and the scheduling priority of the second data packet group.
  • the UPF sends the data packets of the first data packet group to the RAN according to the scheduling priority of the first data packet group, and sends the data packets of the second data packet group to the RAN according to the scheduling priority of the second data packet group.
  • the first data packet group is sent preferentially.
  • the scheduling priority of the second data packet group is higher than the scheduling priority of the first data packet group, the second data packet group is sent preferentially.
  • the UPF can determine the scheduling priority of the first data packet group and the scheduling priority of the second data packet group according to the following method: the UPF can determine the scheduling priority of the first data packet group according to the quantity information of the first data packet group and the rate of the first service data flow Determine the processing time of the first data packet group, and determine the first data according to the processing time of the first data packet group, the information used to indicate the generation time of the first data packet group, and the downlink transmission time window information of the first data packet group The remaining transmission time of the packet group; similarly, the UPF determines the processing time of the second data packet group according to the quantity information of the second data packet group and the rate of the second service data flow, and determines the processing time of the second data packet group according to the processing time of the second data packet group, using The remaining transmission time of the second data packet group is determined based on the information indicating the generation time of the second data packet group and the downlink transmission time window information of the second data packet group, and then the UPF is based on the remaining transmission time of the
  • the scheduling priority of the first data packet group is lower than the scheduling priority of the second data packet group. For another example, if the remaining transmission time of the first data packet group is less than the remaining transmission time of the second data packet group, the scheduling priority of the first data packet group is higher than the scheduling priority of the second data packet group.
  • the information used to indicate the generation time of the first data packet group indicates that the generation time of the first data packet group is P1, the processing time of the UPF for the first data packet group is T1, and the downlink transmission time window information of the first data packet group Indicates that the maximum available duration of the first data packet group from generation to transmission to the first terminal device is T2, and the moment when UPF receives the first data packet group is P2, then the remaining transmission time of the first data packet group determined by UPF is : T2-T1-(P2-P1). It should be noted that the above-mentioned T1 and T2 are a duration, and P1 and P2 are a time point.
  • the information for indicating the generation time of the second data packet group indicates that the generation time of the second data packet group is P3, the processing time of the UPF to the second data packet group is T3, and the downlink transmission time window information of the second data packet group It is indicated that the maximum available duration of the second data packet group from generation to transmission to the second terminal device is T4, and the moment when UPF receives the second data packet group is P4, then the remaining transmission time of the second data packet group determined by UPF is : T4-T3-(P4-P3). It should be noted that the above-mentioned T3 and T4 are one duration, and P3 and P4 are one time point.
  • the remaining transmission time of the first data packet group here has removed the processing time of the UPF for processing the first data packet group, that is, the remaining transmission time of the first data packet group means that the UPF sends the first data packet group.
  • the remaining transmission time of the second data packet group has been removed from the processing time of the UPF for processing the second data packet group, that is, the remaining transmission time of the second data packet group means that the UPF sends the second data packet group to the second terminal. The longest available time period between the device receiving the second packet group.
  • Step 409 the RAN determines the remaining transmission time of the first data packet group according to the information used to indicate the generation time of the first data packet group and the downlink transmission time window information of the first data packet group.
  • This step 409 is the same as the above-mentioned step 305, and reference may be made to the foregoing description.
  • Step 410 The RAN determines the remaining transmission time of the second data packet group according to the information used to indicate the generation time of the second data packet group and the downlink transmission time window information of the second data packet group.
  • This step 410 is similar to the above-mentioned step 409, and reference may be made to the foregoing description.
  • Step 411 the RAN sends the data packets of the first data packet group to the first terminal device according to the remaining transmission time of the first data packet group.
  • the first terminal device receives the data packets of the first data packet group.
  • Step 412 The RAN sends the data packets of the second data packet group to the second terminal device according to the remaining transmission time of the second data packet group.
  • the second terminal device receives the data packets of the second data packet group.
  • the implementation method of the above steps 407 and 408 may be: the RAN determines the scheduling priority of the first data packet group and the second data packet group according to the remaining transmission time of the first data packet group and the remaining transmission time of the second data packet group. and then send the data packets of the first data packet group to the first terminal device according to the scheduling priority of the first data packet group and the remaining transmission time of the first data packet group, and according to the scheduling priority of the second data packet group
  • the data packets of the second data packet group are sent to the second terminal device with the priority and the remaining transmission time of the second data packet group. For example, if the scheduling priority of the first data packet group is higher than the scheduling priority of the second data packet group, the first data packet group is sent preferentially. For another example, if the scheduling priority of the second data packet group is higher than the scheduling priority of the first data packet group, the second data packet group is sent preferentially.
  • steps 401, 403, 405, 407, 409, 411) are related to the above-mentioned steps related to the second data packet group (such as step 402).
  • steps 404, 406, 408, 410, 412) among some steps are not strictly required to be executed sequentially.
  • a data packet group can also be sent to a terminal device within a time window, so as to meet the requirements of low-latency services and further improve the user's service experience.
  • FIG. 3 will be described below with reference to the specific embodiments shown in FIG. 5 and FIG. 6 .
  • FIG. 5 it is a schematic diagram of another method for transmitting service data flow provided by the embodiment of the application.
  • the method provides the configuration process of the service data flow information.
  • the AF provides the service data flow information to the network through the NEF.
  • the service data flow information includes the identification of the application, the identification information of the service data flow, and the demand information of the service data flow.
  • the application ID (Application ID) is used to identify specific services such as media, and can be a set character.
  • the identification information of the service data stream includes but is not limited to one or more of the following information: IP triplet, Uniform Resource Locator (Uniform Resource Locator, URL).
  • IP triplet includes the IP address, port number and protocol number of the AF.
  • the demand information of the service data flow includes but is not limited to one or more of the following information: bit rate (bitrate), packet loss rate (Packet Error Rate, PER), and packet delay budget (Packet Delay Budget, PDB).
  • bit rate bit rate
  • Packet Error Rate Packet Error Rate
  • PDB Packet Delay Budget
  • the requirement information of the service data flow further includes field description information.
  • the field description information includes the identification field description information of the data packet group, the generation time field description information of the data packet group and the downlink transmission time window field description information of the data packet group, and may also include the quantity field description information of the data packet group.
  • the description information of the identification field of the data packet group indicates that the identification field of the data packet group is used to carry the identification of the data packet group
  • the description information of the generation time field of the data packet group indicates that the generation time field of the data packet group is used to carry the identification of the data packet group.
  • the information indicating the generation time of the first data packet group, the downlink transmission time window field description information of the data packet group indicates that the downlink transmission time window field of the data packet group is used to carry the downlink transmission time window information of the data packet group, and the data packet group
  • the description information of the quantity field indicates that the quantity field of the data packet group is used to carry the quantity information of the data packet group.
  • the method includes the following steps:
  • Step 501 the AF sends a first request to the NEF. Accordingly, the NEF may receive the first request.
  • the first request carries the newly added service data flow information or the updated service data flow information.
  • the AF when the AF is ready to add new service data flow information, the AF sends a first request to the NEF.
  • the first request may be a service data flow creation request, for example, it may be PFDManagement_Create Request, a service data flow creation request Carry the newly added service data flow information.
  • the AF when the AF is ready to update the existing service data flow information, the AF sends a first request to the NEF, and the first request may be a service data flow update request, such as a PFDManagement_Update Request, the service data flow
  • the update request carries the updated service data flow information.
  • Step 502 the NEF updates the service data flow information stored on the NEF.
  • the NEF first determines whether to allow the first request, and if so, updates the service data flow information stored on the NEF. For example, if the first request carries the newly added service data flow information, the NEF updates the service data flow information stored on the NEF according to the newly added service data flow information. For another example, if the first request carries updated service data flow information, the NEF updates the service data flow information stored on the NEF according to the updated service data flow information.
  • Step 503 the NEF sends a first response to the AF. Accordingly, the AF can receive the first response.
  • the first response is used to notify the AF that the request processing is successful.
  • the NEF determines that the first request is not allowed, or the NEF fails to update the service data flow information, the first response is used to notify the AF that the request processing fails.
  • the first response may be a service data flow creation response, or a business data flow update response.
  • Step 504 the NEF sends a second request to the UDR. Accordingly, the UDR may receive the second request.
  • the second request carries the newly added service data flow information or the updated service data flow information.
  • the NEF when the NEF is ready to add new service data flow information, the NEF sends a second request to the UDR, the second request may be a data management creation request (DM_Create Request), and the data management creation request carries the newly added service Data flow information.
  • DM_Create Request data management creation request
  • the NEF when the NEF is ready to update the existing service data flow information, the NEF sends a second request to the UDR, the second request may be a data management update request (DM_Update Request), and the data management update request carries the updated Business data flow information.
  • DM_Update Request data management update request
  • Step 505 the UDR updates the service data flow information stored in the UDR.
  • the UDR updates the service data flow information stored in the UDR according to the newly added service data flow information. For another example, if the second request carries updated service data flow information, the UDR updates the service data flow information stored in the UDR according to the updated service data flow information.
  • Step 506 the UDR sends a second response to the NEF. Accordingly, the NEF may receive the second response.
  • the second response is used to notify the NEF that the request processing is successful.
  • the UDR fails to update the service data flow information
  • the second response is used to notify the NEF that the request processing fails.
  • the second response may specifically be a data management create response (DM_Create Response) or a data management update response (DM_Update Response).
  • Step 507 the SMF determines that it needs to acquire service data flow information.
  • a timer is set on the SMF, and the SMF is triggered to obtain service data flow information every time the set time period expires.
  • the SMF determines that it needs to acquire service data flow information, which may be to determine that it needs to acquire newly added service data flow information, or to determine that it needs to acquire updated service data flow information.
  • Step 508 the SMF sends a third request to the NEF. Accordingly, the NEF can receive the third request.
  • the third request is used to request to obtain service data flow information.
  • the third request may be PFDManagement_Fetch Request.
  • Step 509 the NEF sends a third response to the SMF. Accordingly, the SMF can receive the third response.
  • the third response carries the newly added service data flow information or the updated service data flow information.
  • the third response may be PFDManagement_Fetch Response.
  • the SMF After receiving the newly added service data flow information or the updated service data flow information, the SMF saves the newly added service data flow information or the updated service data flow information on the SMF.
  • the SMF actively requests the NEF to obtain the service data flow information.
  • the NEF may also receive the newly added service data flow information or the updated service data flow information after the NEF receives the information. , and actively report the newly added service data flow information or the updated service data flow information to the SMF.
  • the SMF may actively request the UDR to obtain the service data flow information.
  • Step 510 the SMF sends a fourth request to the UPF. Accordingly, the UPF may receive the fourth request.
  • the fourth request carries the newly added service data flow information or the updated service data flow information.
  • the fourth request may be a PFD Management Request.
  • the UPF can perform data flow detection according to the newly added service data flow information or the updated service data flow information, and identify the new service data flow.
  • the newly added service data flow information or the updated service data flow information is provided by the AF, and is updated to the NEF, UDR or SMF in the network. In a specific implementation, it may only be updated to one or more network elements in the NEF, UDR, and SMF in the network, or may also be updated to other network elements in the network, such as AMF, PCF, and so on. And, the service data flow information is also updated to the UPF, so that the UPF can start to detect a new service data flow.
  • Step 511 the UPF sends a fourth response to the SMF. Accordingly, the SMF may receive the fourth response.
  • This step is optional.
  • the network can acquire and configure the specified service data flow information, so that the corresponding service data flow can be detected, and subsequently the data flow can be transmitted based on the service data flow information.
  • FIG. 6 it is a schematic diagram of another method for transmitting service data flow provided by the embodiment of the application.
  • the method includes the following steps:
  • Step 601 the terminal device establishes a service data flow connection of the application with the AF.
  • the terminal device establishes an application service data flow connection with the AF, for example, an application in the terminal device may establish an application layer service data flow connection with an application in the AF.
  • the RTP protocol may be used to establish a service data stream connection at the application layer.
  • the IP triplet or URL of the service data flow is consistent with the IP triplet or URL in the service data flow information provided by the AF to the network in advance.
  • the IP triplet or URL of the service data flow in step 601 is the same as the IP triplet in the service data flow information in the embodiment of FIG. 5 .
  • Groups or URLs remain the same.
  • Step 602 the UPF performs packet detection according to the configured packet detection rules, and when detecting a service data flow corresponding to a specified service, sends an event report to the PCF, and the event report carries the detected packet data flow description (Packet Flow Description, PFD) logo.
  • PFD Packet Flow Description
  • the UPF can use the IP triplet or URL in the service data flow information as the packet detection rule parameters to perform packet inspection.
  • the UPF can also send the event report to the SMF, and then the SMF sends the event report to the PCF.
  • Step 603 the PCF sends a Policy and Charging Control (PCC) rule to the SMF. Accordingly, the SMF can receive the PCC rules.
  • PCC Policy and Charging Control
  • the PCF can first obtain service data flow information from network elements such as UDR or SMF, and then generate PCC rules according to the service data flow information.
  • the PCF provides to generate a PCC rule for each service data stream, and then the PCF sends the PCC rule to the SMF.
  • Each PCC rule includes a QoS class identifier (QoS Class Identifier, QCI) of a QoS flow and integrity transmission policy information, where the integrity transmission policy information includes service data flow detection rules and indication information, which is used to indicate a data packet group Granular transmission control.
  • QCI QoS Class Identifier
  • the PCF may send the SMF initiated SM_Policy Association Modefication Request to the SMF, which carries the PCC rule.
  • Step 604 the SMF sends the configuration information of the service data flow to the UPF. Accordingly, the UPF can receive the configuration information of the service data flow.
  • the configuration information includes indication information, where the indication information is used to instruct the service data flow to perform packet group granularity transmission control.
  • the indication information carried in the configuration information is determined by the SMF according to the integrity transmission policy information received from the PCC rule.
  • the SMF can send the configuration information of the service data flow to the UPF through an N4 message (such as N4PDU Establishment Modification Request, or N4PDU Session Modification Request).
  • N4 message such as N4PDU Establishment Modification Request, or N4PDU Session Modification Request.
  • the UPF After receiving the configuration information, the UPF performs packet-group granularity transmission control on the service data flow according to the indication information in the configuration information.
  • the specific implementation method refer to the relevant description in the embodiment corresponding to FIG. 3 , which is not repeated here.
  • Step 605 the SMF sends the configuration information of the service data flow to the RAN through the AMF.
  • the RAN can receive the configuration information of the service data flow.
  • the configuration information includes indication information, where the indication information is used to instruct the service data flow to perform packet group granularity transmission control.
  • the indication information carried in the configuration information is determined by the SMF according to the integrity transmission policy information received from the PCC rule.
  • the RAN After receiving the configuration information, the RAN performs packet-group granularity transmission control on the service data flow according to the indication information in the configuration information.
  • the RAN After receiving the configuration information, the RAN performs packet-group granularity transmission control on the service data flow according to the indication information in the configuration information.
  • the configuration information of the service data flow can be sent to the RAN and the UPF, and the RAN and the UPF can process the data packets of the service data flow according to the configuration information.
  • Group-level scheduling and transmission control can improve the transmission efficiency of business data streams.
  • each network element in the above-mentioned implementation includes corresponding hardware structures and/or software modules for executing each function.
  • the present invention can be implemented in hardware or a combination of hardware and computer software in conjunction with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a function is performed by hardware or computer software-driven hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.
  • the steps or operations corresponding to the steps or operations implemented by the network device may also be implemented by components (such as chips or circuits) configured in the network device, corresponding to the steps or operations implemented by the access network device. , it can also be implemented by a component (such as a chip or circuit) configured in the access network device, corresponding to the steps or operations implemented by the application function network element, it can also be implemented by a component (such as a chip or circuit) configured in the application function network element .
  • FIG. 7 it is a schematic diagram of a communication apparatus according to an embodiment of the present application.
  • the apparatus is used to implement each step performed by the corresponding network equipment, access network equipment or application function network element in the foregoing embodiment.
  • the apparatus 700 includes a transceiver unit 710 and a processing unit 720 .
  • the communication device is a network device or a chip for a network device, then:
  • the processing unit 720 is configured to obtain, from one or more data packets received by the transceiver unit 710, the identifier of the first data packet group, the information used to indicate the generation time of the first data packet group, and Downlink transmission time window information of the first data packet group, the one or more data packets are data packets of the first data packet group of the first service data stream, and the first service data stream includes at least two data packets packet group, the first data packet group is one of the at least two data packet groups; the transceiver unit 710 is configured to send the data packets of the first data packet group to the access network device, the The data packets of the first data packet group are sent together with the identifier of the first data packet group, and at least one data packet in the first data packet group is sent together with the identifier of the first data packet group, the The information used to indicate the generation time of the first data packet group is sent together with the downlink transmission time window information of the first data packet group.
  • the communication device is an access network device or a chip for an access network device, then:
  • a transceiver unit 710 configured to obtain information indicating the generation time of the first data packet group and downlink transmission time window information of the first data packet group from the received at least one data packet, the at least one data packet is a data packet of a first data packet group of a first service data stream, the first service data stream includes at least two data packet groups, and the first data packet group is one of the at least two data packet groups processing unit 720 for determining the remaining transmission time of the first data packet group according to the information for indicating the generation time of the first data packet group and the downlink transmission time window information of the first data packet group ; and for sending the data packets of the first data packet group to the terminal device through the transceiver unit 710 according to the remaining transmission time of the first data packet group.
  • the communication device is an application function network element or a chip for an application function network element, then:
  • a processing unit 720 configured to generate the identifier of the first data packet group of the first service data stream, the information used to indicate the generation time of the first data packet group, and the downlink transmission time window information of the first data packet group , the first service data stream includes at least two data packet groups, and the first data packet group is one of the at least two data packet groups; the transceiver unit 710 is configured to send the first data packet group to a network device The data packets of the data packet group, the data packets of the first data packet group are sent together with the identifier of the first data packet group, and one or more data packets of the first data packet group carry the first data packet group.
  • the above-mentioned communication device 700 may further include a storage unit, which is used to store data or instructions (also referred to as codes or programs), and each of the above-mentioned units may interact or be coupled with the storage unit to implement corresponding methods or Function.
  • the processing unit 720 may read data or instructions in the storage unit, so that the communication apparatus implements the methods in the above embodiments.
  • each unit in the above apparatus can be realized in the form of software calling through the processing element; also can all be realized in the form of hardware; some units can also be realized in the form of software calling through the processing element, and some units can be realized in the form of hardware.
  • each unit can be a separately established processing element, or can be integrated in a certain chip of the device to be implemented, and can also be stored in the memory in the form of a program, which can be called by a certain processing element of the device and execute the unit's processing. Function.
  • each step of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in the processor element or implemented in the form of software being invoked by the processing element.
  • a unit in any of the above apparatuses may be one or more integrated circuits configured to implement the above method, such as: one or more Application Specific Integrated Circuits (ASICs), or, one or more Multiple microprocessors (digital singnal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), or a combination of at least two of these integrated circuit forms.
  • ASICs Application Specific Integrated Circuits
  • DSP digital singnal processors
  • FPGA Field Programmable Gate Array
  • FPGA Field Programmable Gate Array
  • a unit in the apparatus can be implemented in the form of a processing element scheduler
  • the processing element can be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can invoke programs.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the above transceiving unit 710 is an interface circuit of the device, and is used to send signals to or receive signals from other devices.
  • the transceiver unit 710 is an interface circuit used by the chip to send signals to other chips or devices, or an interface circuit used to receive signals from other chips or devices.
  • FIG. 8 it is a schematic diagram of a communication apparatus according to an embodiment of the present application. It is used to implement the operations corresponding to the network device, the access network device or the application function network element in the above embodiments.
  • the communication apparatus includes: a processor 810 and an interface 830 , and optionally, the communication apparatus further includes a memory 820 .
  • the interface 830 is used to enable communication with other devices.
  • the method performed by the network device, access network device, or application function network element in the above embodiments may be invoked through the processor 810 to the memory (which may be the memory 820 in the network device, access network device, or application function network element, or may be external program stored in the memory). That is, the network device, access network device or application function network element may include a processor 810, and the processor 810 executes the network device, access network device or application function network element in the above method embodiments by invoking a program in the memory method of execution.
  • the processor here may be an integrated circuit with signal processing capability, such as a CPU.
  • a network device, access network device or application function network element may be implemented by one or more integrated circuits configured to implement the above methods. For example: one or more ASICs, or, one or more microprocessor DSPs, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. Alternatively, the above implementations may be combined.
  • the functions/implementation process of the transceiver unit 710 and the processing unit 720 in FIG. 7 may be implemented by the processor 810 in the communication apparatus 800 shown in FIG. 8 calling computer-executable instructions stored in the memory 820 .
  • the function/implementation process of the processing unit 720 in FIG. 7 may be implemented by the processor 810 in the communication apparatus 800 shown in FIG. 8 calling the computer-executed instructions stored in the memory 820, and the function of the transceiver unit 710 in FIG. 7
  • the implementation process can be implemented through the interface 830 in the communication device 800 shown in FIG. 8 .
  • At least one item (single, species) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple.
  • “Plurality" means two or more, and other quantifiers are similar.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.
  • a general-purpose processor may be a microprocessor, or alternatively, the general-purpose processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a digital signal processor core, or any other similar configuration. accomplish.
  • the steps of the method or algorithm described in the embodiments of this application may be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
  • Software units can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or this.
  • RAM Random Access Memory
  • ROM read-only memory
  • EPROM memory read-only memory
  • EEPROM memory electrically erasable programmable read-only memory
  • registers hard disk, removable disk, CD-ROM or this.
  • a storage medium can be coupled to the processor such that the processor can read information from, and write information to, the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and storage medium may be provided in the ASIC.
  • the above-described functions described herein may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on, or transmitted over, a computer-readable medium in the form of one or more instructions or code.
  • Computer-readable media includes computer storage media and communication media that facilitate the transfer of a computer program from one place to another. Storage media can be any available media that a general-purpose or special-purpose computer can access.
  • Such computer-readable media may include, but are not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other device that can be used to carry or store instructions or data structures and Other media in the form of program code that can be read by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • any connection is properly defined as a computer-readable medium, for example, if software is transmitted from a website site, server or other remote source over a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) Or transmitted by wireless means such as infrared, wireless, and microwave are also included in the definition of computer-readable media.
  • DSL digital subscriber line
  • the discs and magnetic discs include compact discs, laser discs, optical discs, digital versatile discs (English: Digital Versatile Disc, DVD for short), floppy discs and Blu-ray discs. Disks usually reproduce data magnetically, while Discs usually use lasers to optically reproduce data. Combinations of the above can also be included in computer readable media.
  • the functions described in this application may be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

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Abstract

本申请实施例提供业务数据流的传输方法、通信装置及通信系统。该方法包括：网络设备从接收到的一个或多个数据包中获取第一数据包组的标识、用于指示第一数据包组的生成时间的信息和第一数据包组的下行传输时间窗信息；向接入网设备发送第一数据包组的数据包，第一数据包组中的至少一个数据包是与第一数据包组的标识、用于指示第一数据包组的生成时间的信息以及第一数据包组的下行传输时间窗信息一起发送的。该方案，网络设备将第一数据包组的相关信息传输至接入网设备，使接入网设备可以基于第一数据包组的相关信息对第一数据包组进行传输控制，实现了按照数据包组粒度进行传输控制，有助于提升数据包的传输效率以及提升用户体验。

Description

业务数据流的传输方法、通信装置及通信系统 技术领域
本申请实施例涉及通信技术领域，尤其涉及业务数据流的传输方法、通信装置及通信系统。
背景技术
目前，在下行传输时，用户面网元和接入网设备是基于配置的调度策略，对业务数据流按照数据包粒度进行调度。
然而，在一些应用中，需要考虑对同一个业务数据流的多个数据包进行联合调度。
发明内容
本申请实施例提供业务数据流的传输方法、通信装置及通信系统，用以实现对业务数据流的多个数据包进行联合调度。
第一方面，本申请实施例提供一种业务数据流的传输方法，包括：网络设备从接收到的一个或多个数据包中获取第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述一个或多个数据包为第一业务数据流的第一数据包组的数据包，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；所述网络设备向接入网设备发送所述第一数据包组的数据包，所述第一数据包组的数据包是与所述第一数据包组的标识一起发送的，所述第一数据包组中的至少一个数据包是与所述第一数据包组的标识、所述用于指示所述第一数据包组的生成时间的信息以及所述第一数据包组的下行传输时间窗信息一起发送的。
其中，可以将第一数据包组的标识、用于指示第一数据包组的生成时间的信息和第一数据包组的下行传输时间窗信息统称为第一数据包组的相关信息。第一数据包组的相关信息用于对第一数据包组进行传输控制，或，用于接入网设备对第一数据包组进行传输控制，或，用于指示接入网设备对第一数据包组进行传输控制。
基于上述方案，网络设备获取到第一数据包组的相关信息，并将第一数据包组的相关信息携带于第一数据包组的数据包内传输至接入网设备，使得接入网设备可以基于第一数据包组的相关信息对第一数据包组进行传输控制，从而实现了按照数据包组粒度进行传输控制，有助于提升数据包的传输效率以及提升用户体验。并且，通过第一数据包组的下行传输时间窗信息指示了第一数据包组从生成到传输至终端设备的最大可用时长，因此可以实现将一个数据包组在一个时间窗内发送至终端设备，可以满足低时延业务的需求，进一步提升用户的业务体验。
其中，当在第一数据包组的部分数据包内(比如第一数据包组的第一个或前K个数据包)携带第一数据包组的相关信息，在第一数据包组的其它部分数据包内不携带第一数据包组的相关信息，则可以减少传输第一数据包组的相关信息带来的开销。
在一种可能的实现方法中，所述网络设备接收来自应用功能网元的所述一个或多个数据包。
在一种可能的实现方法中，所述网络设备缓存所述第一数据包组中的N个数据包，N为大于1的整数；所述网络设备向接入网设备发送所述第一数据包组的数据包，包括：所述网络设备获取缓存的所述N个数据包，并向接入网设备发送所述N个数据包。
基于该方法，有助于避免接入网设备在短时间内从网络设备收到大量数据包而造成流量冲击，或者是在长时间内收不到来自网络设备的数据包而造成资源浪费。
在一种可能的实现方法中，所述网络设备从接收到的所述一个或多个数据包中获取所述第一数据包组的数量信息；所述网络设备根据所述第一数据包组的数量信息，确定缓存的所述第一数据包组的数据包个数N。
在一种可能的实现方法中，所述网络设备根据用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，确定所述N个数据包的缓存时间。
在一种可能的实现方法中，所述网络设备从接收到的所述一个或多个数据包中获取所述第一数据包组的数量信息；所述网络设备从接收到的第二业务数据流的第二数据包组的一个或多个数据包中获取所述第二数据包组的标识、所述第二数据包组的数量信息、用于指示所述第二数据包组的生成时间的信息和所述第二数据包组的下行传输时间窗信息；所述网络设备根据所述第一数据包组的数量信息、所述第二数据包组的数量信息、用于指示所述第一数据包组的生成时间的信息、用于指示所述第二数据包组的生成时间的信息、所述第一数据包组的下行传输时间窗信息和所述第二数据包组的下行传输时间窗信息，确定所述第一数据包组的调度优先级；所述网络设备向接入网设备发送所述第一数据包组的数据包，包括：所述网络设备根据所述第一数据包组的调度优先级，向所述接入网设备发送所述第一数据包组的数据包。
基于上述方案，当多个终端设备由于处理能力不同，可以通过网络设备的控制，使得多个终端设备可以保持同步，从而提升用户的业务体验。并且，还可以实现将一个数据包组在一个时间窗内发送至终端设备，从而可以满足低时延业务的需求，进一步提升用户的业务体验。
在一种可能的实现方法中，所述网络设备根据所述第一数据包组的数量信息、所述第二数据包组的数量信息、所述第一数据包组的下行传输时间窗信息和所述第二数据包组的下行传输时间窗信息，确定所述第一数据包组的调度优先级，包括：所述网络设备根据所述第一数据包组的数量信息和所述第一业务数据流的速率，确定所述第一数据包组的处理时间；以及根据所述第一数据包组的处理时间、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，确定所述第一数据包组的剩余传输时间；所述网络设备根据所述第二数据包组的数量信息和所述第二业务数据流的速率，确定所述第二数据包组的处理时间；以及根据所述第二数据包组的处理时间、用于指示所述第二数据包组的生成时间的信息和所述第二数据包组的下行传输时间窗信息，确定所述第二数据包组的剩余传输时间；所述网络设备根据所述第一数据包组的剩余传输时间和所述第二数据包组的剩余传输时间，确定所述第一数据包组的调度优先级。
在一种可能的实现方法中，所述网络设备接收指示信息，所述指示信息用于指示对所述第一业务数据流进行数据包组粒度的传输控制。比如该指示信息来自会话管理网元或策略控制网元等。
第二方面，本申请实施例提供一种业务数据流的传输方法，包括：接入网设备从接收到的至少一个数据包中获取用于指示第一数据包组的生成时间的信息和所述第一数据包 组的下行传输时间窗信息，所述至少一个数据包为第一业务数据流的第一数据包组的数据包，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；所述接入网设备根据用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，确定所述第一数据包组的剩余传输时间；所述接入网设备根据所述第一数据包组的剩余传输时间，向终端设备发送所述第一数据包组的数据包。
基于上述方案，接入网设备获取到第一数据包组的相关信息，从而可以基于第一数据包组的相关信息对第一数据包组进行传输控制，从而实现了按照数据包组粒度进行传输控制，有助于提升数据包的传输效率以及提升用户体验。并且，通过第一数据包组的下行传输时间窗信息指示了第一数据包组从生成到传输至终端设备的最大可用时长，因此可以实现将一个数据包组在一个时间窗内发送至终端设备，可以满足低时延业务的需求，进一步提升用户的业务体验。
在一种可能的实现方法中，所述接入网设备从接收到的所述至少一个数据包中获取所述第一数据包组的数量信息；所述接入网设备根据所述第一数据包组的数量信息和所述第一数据包组的剩余传输时间，确定所述第一数据包组对应的调制编码方案；所述接入网设备根据所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的数据包，包括：所述接入网设备根据所述第一数据包组对应的调制编码方案和所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的数据包。
在一种可能的实现方法中，所述接入网设备根据所述第一数据包组的数量信息和所述第一数据包组的剩余传输时间，确定所述第一数据包组对应的调制编码方案，包括：所述接入网设备根据所述第一数据包组的数量信息和所述第一数据包组的剩余传输时间，确定所述第一数据包组中的在先收到的第一部分数据包对应的第一调制编码方案和所述第一数据包组中的在后收到的第二部分数据包对应的第二调制编码方案；其中，所述第一调制编码方案的等级低于所述第二调制编码方案的等级；所述接入网设备根据所述第一数据包组对应的调制编码方案和所述第一数据包组的剩余传输时间，向所述第一终端设备发送所述第一数据包组的数据包，包括：所述接入网设备根据所述第一调制编码方案和所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的第一部分数据包；所述接入网设备根据所述第二调制编码方案和所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的第二部分数据包。
在一种可能的实现方法中，所述接入网设备从接收到的至少一个数据包中获取用于指示第二数据包组的生成时间的信息和所述第二数据包组的下行传输时间窗信息，所述至少一个数据包为第二业务数据流的所述第二数据包组的数据包；所述接入网设备根据用于指示所述第二数据包组的生成时间的信息和第二数据包组的下行传输时间窗信息，确定所述第二数据包组的剩余传输时间；所述接入网设备根据所述第一数据包组的剩余传输时间和所述第二数据包组的剩余传输时间，确定所述第一数据包组的调度优先级；所述接入网设备根据所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的数据包，包括：所述接入网设备根据所述第一数据包组的调度优先级和所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的数据包。
基于上述方案，当多个终端设备由于处理能力不同，可以通过接入网设备的控制，使得多个终端设备可以保持同步，从而提升用户的业务体验。并且，还可以实现将一个数据 包组在一个时间窗内发送至终端设备，从而可以满足低时延业务的需求，进一步提升用户的业务体验。
在一种可能的实现方法中，所述接入网设备接收指示信息，所述指示信息用于指示对所述第一业务数据流进行数据包组粒度的传输控制。所述指示信息来自会话管理网元、网络设备或策略控制网元等。
第三方面，本申请实施例提供一种业务数据流的传输方法，包括：应用功能网元生成第一业务数据流的第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；所述应用功能网元向网络设备发送所述第一数据包组的数据包，所述第一数据包组的数据包是与所述第一数据包组的标识一起发送的，所述第一数据包组的一个或多个数据包携带所述第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息。
基于上述方案，应用功能网元生成第一数据包组的相关信息，第一数据包组的相关信息用于指示第一数据包组的特征信息，并将第一数据包组的相关信息携带于第一数据包组的一个或多个数据包内传输至网络设备，使得网络设备可以基于第一数据包组的相关信息对第一数据包组进行传输控制，从而实现了按照数据包组粒度进行传输控制，有助于提升数据包的传输效率以及提升用户体验。并且，通过第一数据包组的下行传输时间窗信息指示了第一数据包组从生成到传输至终端设备的最大可用时长，因此可以实现将一个数据包组在一个时间窗内发送至终端设备，可以满足低时延业务的需求，进一步提升用户的业务体验。
在一种可能的实现方法中，所述第一数据包组的一个或多个数据包还包括所述第一数据包组的数量信息。
在一种可能的实现方法中，所述应用功能网元根据终端设备的感知数据的生成时间、所述终端设备处理所述第一数据包组的预估时长和所述第一数据包组的生成时间，确定所述第一数据包组的下行传输时间窗信息。
第四方面，本申请实施例提供一种通信装置，该装置可以是网络设备，还可以是用于网络设备的芯片。该装置具有实现上述第一方面的任意实现方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第五方面，本申请实施例提供一种通信装置，该装置可以是接入网设备，还可以是用于接入网设备的芯片。该装置具有实现上述第二方面的任意实现方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第六方面，本申请实施例提供一种通信装置，该装置可以是应用功能网元，还可以是用于应用功能网元的芯片。该装置具有实现上述第三方面的任意实现方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第七方面，本申请实施例提供一种通信装置，包括处理器和存储器；该存储器用于存储计算机指令，当该装置运行时，该处理器执行该存储器存储的计算机指令，以使该装置执行上述第一方面至第三方面中的任意实现方法。
第八方面，本申请实施例提供一种通信装置，包括用于执行上述第一方面至第三方面中的任意实现方法的各个步骤的单元或手段(means)。
第九方面，本申请实施例提供一种通信装置，包括处理器和接口电路，所述处理器用于通过接口电路与其它装置通信，并执行上述第一方面至第三方面中的任意实现方法。该处理器包括一个或多个。
第十方面，本申请实施例提供一种通信装置，包括处理器，用于与存储器耦合，处理器用于调用所述存储器中存储的程序，以执行上述第一方面至第三方面中的任意实现方法。该存储器可以位于该装置之内，也可以位于该装置之外。且该处理器包括一个或多个。
第十一方面，本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得上述第一方面至第三方面中的任意实现方法被执行。
第十二方面，本申请实施例还提供一种计算机程序产品，该计算机程序产品包括计算机程序，当计算机程序运行时，使得上述第一方面至第三方面中的任意实现方法被执行。
第十三方面，本申请实施例还提供一种芯片系统，包括：处理器，用于执行上述第一方面至第三方面中的任意实现方法。
第十四方面，本申请实施例还提供一种通信系统，包括用于执行第一方面中任意实现方法的网络设备，和用于执行第二方面中任意实现方法的接入网设备。
在一种可能的实现方法中，所述通信系统还包括用于执行第三方面中任意实现方法的应用功能网元。
第十五方面，本申请实施例还提供一种通信系统，包括用于执行第一方面中任意实现方法的网络设备，和用于执行第三方面中任意实现方法的应用功能网元。
附图说明
图1(a)为本申请实施例提供的一种通信系统示意图；
图1(b)为本申请实施例提供的一种通信系统示意图；
图2(a)为基于服务化架构的5G网络架构示意图；
图2(b)为基于点对点接口的5G网络架构示意图；
图3为本申请实施例提供的一种业务数据流的传输方法示意图；
图4为本申请实施例提供的另一种业务数据流的传输方法示意图；
图5为本申请实施例提供的另一种业务数据流的传输方法示意图；
图6为本申请实施例提供的另一种业务数据流的传输方法示意图；
图7为本申请实施例提供的一种通信装置示意图；
图8为本申请实施例提供的另一种通信装置示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。方法实施例中的具体操作方法也可以应用于装置实施例或系统实施例中。其中，在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
为实现对业务数据流的多个数据包进行联合调度，如图1(a)所示，本申请提供一种通信系统，该系统包括接入网设备和网络设备。可选的，该系统还包括应用功能网元。
网络设备，用于从接收到的一个或多个数据包中获取第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述一个或多个数据包为第一业务数据流的所述第一数据包组的数据包，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；以及，用于向接入网设备发送所述第一数据包组的数据包，所述第一数据包组的数据包是与所述第一数据包组的标识一起发送的，所述第一数据包组中的至少一个数据包是与所述第一数据包组的标识、所述用于指示所述第一数据包组的生成时间的信息以及所述第一数据包组的下行传输时间窗信息一起发送的。
接入网设备，用于接收来自网络设备的第一数据包组的数据包。
其中，上述方案的具体实现将在后续方法实施例部分详细阐述，在此不再赘述。
图1(a)所示的系统可以用在图2(a)或图2(b)所示的第五代(5th generation，5G)网络架构中，当然，也可以用在未来网络架构，比如第六代(6th generation，6G)网络架构等，本申请不做限定。
为实现对业务数据流的多个数据包进行联合调度，如图1(b)所示，本申请提供一种通信系统，该系统包括应用功能网元和网络设备。
图1(b)所示的系统可以用在图2(a)或图2(b)所示的5G网络架构中，当然，也可以用在未来网络架构，比如6G网络架构等，本申请不做限定。
应用功能网元，用于生成第一业务数据流的第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；向网络设备发送所述第一数据包组的数据包，所述第一数据包组的数据包是与所述第一数据包组的标识一起发送的，所述第一数据包组的一个或多个数据包携带所述第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息。网络设备，用于从接收到的一个或多个数据包中获取所述第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息。
示例性的，假设图1(a)或图1(b)所示的通信系统应用于5G网络架构，如图2(a)所示，为基于服务化架构的5G网络架构示意图。图1(a)或图1(b)中的网络设备所对应的网元或者实体可以为图2(a)所示的5G网络架构中的用户面功能(user plane function，UPF)网元，图1(a)中的接入网设备所对应的网元或者实体可以为图2(a)所示的5G网络架构中的无线接入网(radio access network，RAN)设备。图1(a)或图1(b)中的应用功能网元所对应的网元或者实体可以为图2(a)所示的5G网络架构中的应用功能(application function，AF)网元。
图2(a)所示的5G网络架构中可包括三部分，分别是终端设备部分、数据网络(data network，DN)和运营商网络部分。下面对其中的部分网元的功能进行简单介绍说明。
其中，运营商网络可包括以下网元中的一个或多个：鉴权服务器功能(authentication  server function，AUSF)网元、网络开放功能(network exposure function，NEF)网元、策略控制功能(policy control function，PCF)网元、统一数据管理(unified data management，UDM)、统一数据库(unified data repository，UDR)、网络存储功能(network repository function，NRF)网元、接入与移动性管理功能(access and mobility management function，AMF)网元、会话管理功能(session management function，SMF)网元、RAN以及UPF网元等。上述运营商网络中，除无线接入网部分之外的部分可以称为核心网络部分。
需要说明的是，图2(a)中所示的AF网元可以是运营商网络内的AF网元，也可以是运营商网络之外的AF网元(如第三方服务器等)。
在具体实现中，本申请实施例中的终端设备，可以是用于实现无线通信功能的设备。其中，终端设备可以是5G网络或者未来演进的公共陆地移动网络(public land mobile network，PLMN)中的用户设备(user equipment，UE)、接入终端、终端单元、终端站、移动站、移动台、远方站、远程终端、移动设备、无线通信设备、终端代理或终端装置等。接入终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备或可穿戴设备，虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。终端可以是移动的，也可以是固定的。
上述终端设备可通过运营商网络提供的接口(例如N1等)与运营商网络建立连接，使用运营商网络提供的数据和/或语音等服务。终端设备还可通过运营商网络访问DN，使用DN上部署的运营商业务，和/或第三方提供的业务。其中，上述第三方可为运营商网络和终端设备之外的服务方，可为终端设备提供其他数据和/或语音等服务。其中，上述第三方的具体表现形式，具体可根据实际应用场景确定，在此不做限制。
RAN是运营商网络的子网络，是运营商网络中业务节点与终端设备之间的实施系统。终端设备要接入运营商网络，首先是经过RAN，进而可通过RAN与运营商网络的业务节点连接。本申请中的RAN设备，是一种为终端设备提供无线通信功能的设备，RAN设备也称为接入网设备。本申请中的RAN设备包括但不限于：5G中的下一代基站(g nodeB，gNB)、演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(baseBand unit，BBU)、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、移动交换中心等。
AMF网元，主要进行移动性管理、接入鉴权或授权等功能。此外，还负责在UE与PCF间传递用户策略。
SMF网元，主要进行会话管理、PCF下发控制策略的执行、UPF的选择、UE互联网协议(internet protocol，IP)地址分配等功能。
UPF网元，作为和数据网络的接口UPF，完成用户面数据转发、基于会话/流级的计费统计，带宽限制等功能。
UDM网元，主要负责管理签约数据、用户接入授权等功能。
UDR，主要负责签约数据、策略数据、应用数据等类型数据的存取功能。
NEF网元，主要用于支持能力和事件的开放。
AF网元，主要传递应用侧对网络侧的需求，例如，服务质量(quality of service，QoS)需求或用户状态事件订阅等。AF可以是第三方功能实体，也可以是运营商部署的应用服务，如IP多媒体子系统(IP multimedia subsystem，IMS)语音呼叫业务。其中，AF网元也可以称为应用服务器。
PCF网元，主要负责针对会话、业务数据流级别进行计费、QoS带宽保障及移动性管理、UE策略决策等策略控制功能。
NRF网元，可用于提供网元发现功能，基于其他网元的请求，提供网元类型对应的网元信息。NRF还提供网元管理服务，如网元注册、更新、去注册以及网元状态订阅和推送等。
AUSF网元：主要负责对用户进行鉴权，以确定是否允许用户或设备接入网络。
DN，是位于运营商网络之外的网络，运营商网络可以接入多个DN，DN上可部署多种业务，可为终端设备提供数据和/或语音等服务。例如，DN是某智能工厂的私有网络，智能工厂安装在车间的传感器可为终端设备，DN中部署了传感器的控制服务器，控制服务器可为传感器提供服务。传感器可与控制服务器通信，获取控制服务器的指令，根据指令将采集的传感器数据传送给控制服务器等。又例如，DN是某公司的内部办公网络，该公司员工的手机或者电脑可为终端设备，员工的手机或者电脑可以访问公司内部办公网络上的信息、数据资源等。
图2(a)中Nausf、Nnef、Npcf、Nudm、Naf、Namf、Nsmf、N1、N2、N3、N4，以及N6为接口序列号。这些接口序列号的含义可参见3GPP标准协议中定义的含义，在此不做限制。
示例性的，假设图1(a)所示的通信系统应用于5G网络架构，如图2(b)所示，为基于服务化架构的5G网络架构示意图。图1(a)或图1(b)中的网络设备所对应的网元或者实体可以为图2(b)所示的5G网络架构中的UPF网元，图1(a)中的接入网设备所对应的网元或者实体可以为图2(b)所示的5G网络架构中的RAN设备。图1(a)或图1(b)中的应用功能网元所对应的网元或者实体可以为图2(b)所示的5G网络架构中的AF网元。
图2(b)中的网元的功能的介绍可以参考图2(a)中对应的网元的功能的介绍，不再赘述。图2(b)与图2(a)的主要区别在于：图2(b)中的各个网元之间的接口是点对点的接口，图2(a)中的各个网元之间的接口是服务化的接口。
在图2(b)所示的架构中，各个网元之间的接口名称及功能如下：
1)、N7：PCF与SMF之间的接口，用于下发协议数据单元(protocol data unit，PDU)会话粒度以及业务数据流粒度控制策略。
2)、N15：PCF与AMF之间的接口，用于下发UE策略及接入控制相关策略。
3)、N5：AF与PCF之间的接口，用于应用业务请求下发以及网络事件上报。
4)、N4：SMF与UPF之间的接口，用于控制面与用户面之间传递信息，包括控制面向用户面的转发规则、QoS控制规则、流量统计规则等的下发以及用户面的信息上报。
5)、N11：SMF与AMF之间的接口，用于传递RAN和UPF之间的PDU会话隧道信 息、传递发送给UE的控制消息、传递发送给RAN的无线资源控制信息等。
6)、N2：AMF与RAN之间的接口，用于传递核心网侧至RAN的无线承载控制信息等。
7)、N1：AMF与UE之间的接口，接入无关，用于向UE传递QoS控制规则等。
8)、N8：AMF与UDM间的接口，用于AMF向UDM获取接入与移动性管理相关签约数据与鉴权数据，以及AMF向UDM注册UE当前移动性管理相关信息等。
9)、N10：SMF与UDM间的接口，用于SMF向UDM获取会话管理相关签约数据，以及SMF向UDM注册UE当前会话相关信息等。
10)、N35：UDM与UDR间的接口，用于UDM从UDR中获取用户签约数据信息。
11)、N36：PCF与UDR间的接口，用于PCF从UDR中获取策略相关签约数据以及应用数据相关信息。
12)、N12：AMF和AUSF间的接口，用于AMF向AUSF发起鉴权流程，其中可携带签约隐藏标识(Subscription Concealed Identifier，SUCI)作为签约标识；
13)、N13：UDM与AUSF间的接口，用于AUSF向UDM获取用户鉴权向量，以执行鉴权流程。
可以理解的是，上述网元或者功能既可以是硬件设备中的网络元件，也可以是在专用硬件上运行的软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。可选的，上述网元或者功能可以由一个设备实现，也可以由多个设备共同实现，还可以是一个设备内的一个功能模块，本申请实施例对此不作具体限定。
本申请实施例中的会话管理网元、网络设备、接入网设备、应用功能网元分别可以是图2(a)或图2(b)中的SMF、UPF、RAN、AF，也可以是未来通信如6G网络中具有上述SMF、UPF、RAN、AF的功能的网元，本申请对此不限定。为方便说明，本申请以会话管理网元、网络设备、接入网设备、应用功能网元分别为上述SMF、UPF、RAN、AF为例进行说明。
需要说明的是，随着通信技术的发展，本申请实施例的数据传输方法的执行主体，如应用功能网元、网络设备、接入网设备的名称，也可能会随之改变，但名称的改变不影响本申请方案的技术实质。因此，仅涉及执行主体的名称改变时，不会影响本申请方案的保护范围。
在现有的QoS模型中，当UPF收到下行数据包时，UPF会根据SMF提前配置好的包检测规则(packet detection rule，PDR)过滤器(filter)将具有相同可靠性需求的数据包(packets)封装至同一个QoS流(QoS flow)。多个QoS flow可能存在于同一个PDU会话(PDU session)中，但每一个QoS flow具有独立、唯一的QoS流标识(QoS flow identifier，QFI)，且每个QoS flow关联一个QoS配置文件(QoS profile)。网络侧会根据QoS profile里面的参数对属于同一个QoS flow的数据包采用相同的QoS保障，如时延、转发优先级、丢包率等等。
当RAN收到来自UPF的下行QoS flow时，RAN会按照一定的映射规则将多个QoS flow封装至同一个数据无线承载(Data Radio Bearer，DRB)，同一个DRB会享有相同的空口侧可靠性保障。
目前，在下行传输时，UPF和RAN是基于配置的调度策略，对业务数据流按照数据 包粒度进行调度。然而，在一些应用中，需要考虑对同一个业务数据流的多个数据包进行联合调度。
下面以增强现实(augment reality，AR)应用场景为例进行说明。
AR应用是5G网络支持的潜在主要应用，可以用于面向个人消费者场景，例如展览馆和教育场景的实时增强现实体验，多人参与的AR游戏和会议等。AR也可以用于面向商业场景的应用，例如AR辅助器件装配。
以单人AR场景的业务流程为例，终端设备与AR服务器(其中，AR服务器是AF的一个具体示例)之间交互的一个完整流程包括以下过程：
T1时刻：终端设备产生感知数据(比如包括用户头部动作信息、用户视角信息、实时图像或视频等)并经由RAN、UPF向AR服务器发送感知数据；
其中，可以认为终端设备产生感知数据与发送感知数据之间的时间间隔很短，可以忽略不计。
T2时刻：AR服务器收到感知数据，并开始对感知数据进行处理。
其中，对感知数据进行处理，比如包括：根据用户头部动作信息和用户视角信息等感知数据渲染生成对应的AR媒体数据并进行编码，得到AR对象。
T3时刻：AR服务器完成对感知数据的处理并生成数据包组，该数据包组包括多个数据包；然后经由UPF、RAN向终端设备发送该数据包组。
其中，可以认为AR服务器产生数据包组与发送数据包组之间的时间间隔很短，可以忽略不计。
T4时刻：终端设备收到数据包组，并开始对数据包组的数据包进行处理(比如包括解码、呈现等)。
T5时刻：终端设备完成对一个数据包组的数据包的处理。
至此，完成终端设备与AR服务器之间交互的一个完整流程。
其中，业务数据流、AR对象与数据包组之间的关系如下：
一个AR对象可以对应一个数据包组，一个数据包组包括多个数据包。示例性地，以一个AR对象是一个桌子为例，该AR对象可以对应一个数据包组。
或者，一个AR对象可以对应多个数据包组。示例性地，以一个AR对象是一个桌子为例，该桌子的正面部分对应一个数据包组，背面部分对应另一个数据包组等等。
或者，多个AR对象对应一个数据包组。示例性地，以一个AR对象是一个桌子，另一个AR对象是椅子为例，该桌子和椅子对应一个数据包组。也即，该数据包组用于传输该桌子和椅子所对应的数据包。
或者，多个AR对象中各个AR对象的部分对应一个数据包组。示例性地，以一个AR对象是一个桌子，另一个AR对象是椅子为例，该桌子的正面和椅子的正面对应一个数据包组。或者，该桌子的正面和椅子对应一个数据包组。或者，该椅子的正面和桌子对应一个数据包组。
也即，本申请实施例中的一个数据包组可以对应一个或多个AR对象的部分或全部。
一个业务数据流包含一个或多个数据包组，一个数据包组由多个数据包构成，一个数据包组可以用一个数据包组的标识来指示。同一个业务数据流的不同数据包组的标识可 以相同，也可以不同，例如相邻两个数据包组的标识不同，不相邻的两个数据包组的标识可以相同，也可以不同。
一个业务数据流可以用于传输一个或多个AR对象对应的数据包组。
需要说明的是，本申请实施例不限定于业务数据流、数据包组、AR对象之间的关系，可以根据具体实现而定。
需要说明的是，上述是以AR业务中的AR对象为例进行说明，对于其它应用场景，本申请实施例同样适用。
为了保证用户的业务体验，目前一般要求从终端设备开始上报感知数据(即前述T1时刻)到终端设备完成对一个数据包组的数据包的处理(即前述T5时刻)之间的时间不超过一个预设的最大时延(比如70ms)。由于在终端设备与AR服务器的不同交互流程中，不同感知数据的上行传输所花费的时间(即上述T2与T1的差值)可能不同，AR服务器处理不同感知数据后生成数据包组所花费的时间(即上述T3与T2的差值)可能不同，终端设备处理不同数据包组的数据包所花费的时间(即上述T5与T4的差值)也可能不同，这将导致在不同的交互流程中，用于不同数据包组的下行传输的剩余时间(即上述T4与T3的差值)可能不同。
示例性地，假设预设的最大时延为70ms。在一次交互流程中，感知数据的上行传输花费6ms，终端设备处理数据包组的数据包预计需要4ms，AR服务器处理感知数据后生成数据包组花费50ms，则数据包组的下行传输的剩余时间为10ms，也即AR服务器需要在10ms内将生成的数据包组经由UPF、RAN发送至终端设备。
在另一次交互流程中，感知数据的上行传输花费6ms，终端设备处理数据包组的数据包预计需要4ms，AR服务器处理感知数据后生成数据包组花费45ms，则数据包组的下行传输的剩余时间为15ms，也即AR服务器需要在15ms内将生成的数据包组经由UPF、RAN发送至终端设备。
可以看出，在上述示例中，需要考虑对一个业务数据流的多个数据包进行联合调度，以使得该多个数据包可以在一个时间窗内到达终端设备，从而保证用户的业务体验。并且，该时间窗的大小是可变的，也即针对不同的交互流程，该时间窗的大小可以不同。
另外，在多人参与的AR应用场景中，由于不同终端设备的处理能力不同，可能导致不同终端设备之间不同步。以多人AR游戏为例，参与游戏的多个终端设备分别向AR服务器上报获取到的感知数据，AR服务器基于收到的一个或多个感知数据生成数据包组，并将数据包组同时发送给多个终端设备。然而由于不同终端设备的处理能力不同，可能导致不同终端设备所显示的图像存在时间差，也即在同一时间看到的图像不同。因此，在该场景下，也需要考虑对业务数据流的多个数据包进行联合调度，以使得不同终端设备之间的保持同步(比如同步显示图像或同步接收语音等)，从而保证用户的业务体验。
本申请实施例中，业务数据流指的是来自AF(如第三方服务器)的业务的数据流，如媒体业务数据流，具体的，比如包含视频业务数据流、语音业务数据流等。
参考图3，为本申请实施例提供的一种业务数据流的传输方法示意图，该方法包括以下步骤：
步骤301，AF生成第一业务数据流的第一数据包组的第一信息。
例如，这里的AF可以是AR应用中的AR服务器，或者还可以是其它第三方服务器等。
第一业务数据流是AF与第一终端设备之间的业务数据流，该业务数据流包括一个或多个数据包组，一个数据包组包含多个数据包。其中，将第一业务数据流中的任意一个数据包组称为第一数据包组。
第一信息包括第一业务数据流的第一数据包组的标识、用于指示第一数据包组的生成时间的信息和第一数据包组的下行传输时间窗信息。
第一数据包组的标识用于标识第一数据包组。
用于指示第一数据包组的生成时间的信息可以是一个指示信息，该指示信息指示了第一数据包组的生成时间，或者也可以是第一数据包组的生成时间(也即生成的时间点)。其中，第一数据包组的生成时间指的是AF在收到来自第一终端设备的感知数据，对该感知数据进行处理后生成第一数据包组的时间。
第一数据包组的下行传输时间窗信息用于指示第一数据包组从生成到传输至第一终端设备的最大可用时长。例如，AF可以根据第一终端设备的感知数据的生成时间(也即生成的时间点)、第一终端设备处理第一数据包组的预估时长和第一数据包组的生成时间，确定第一数据包组的下行传输时间窗信息。示例性地，第一终端设备的感知数据的生成时间为K1，并且第一终端设备在K1时刻向AF发送第一终端设备的感知数据，AF收到第一数据包组的时间为K2，第一数据包组的生成时间为K3，第一终端设备处理第一数据包组的预估时长L1，预设的最大时延为L2，则第一数据包组从生成到传输至第一终端设备的最大可用时长＝L2-L1-(K2-K1)-(K3-K2)，其中，K2-K1表示第一终端设备的感知数据从第一终端设备发送至AF的上行传输时长，K3-K2表示AF从开始处理第一终端设备的感知数据到根据感知数据生成第一数据包组所花费的时长。
可选的，第一信息还包括第一数据包组的数量信息。第一数据包组的数量信息用于指示第一数据包组的数量。第一数据包组的数量信息可以是一个指示信息，该指示信息指示了第一数据包组的数量信息，或者也可以是第一数据包组的数量，或者还可以包含第一数据包组的总大小和每个数据包的大小，通过第一数据包组的总大小和每个数据包的大小可以计算得到第一数据包组的数量。
步骤302，AF向UPF发送第一数据包组的数据包。相应地，UPF收到第一数据包组的数据包。
第一数据包组包括多个数据包，该多个数据包中的部分或全部数据包携带第一信息。比如，可以在第一数据包的包头(如实时传输协议(Real-time Transport Protocol，RTP)头)中携带第一信息。
作为一种实现方法，该第一数据包组的每个数据包都携带第一信息。
作为一种实现方法，该第一数据包组的每个数据包都携带第一信息中的一部分信息。比如部分数据包携带第一数据包组的标识和用于指示第一数据包组的生成时间的信息，其它部分数据包携带第一数据包组的下行传输时间窗信息和第一数据包组的数量信息。再比如，部分数据包携带第一数据包组的标识和用于指示第一数据包组的生成时间的信息，部分数据包携带第一数据包组的下行传输时间窗信息，其它部分数据包携带第一数据包组的数量信息，等等。
作为另一种实现方法，该第一数据包组的第一个数据包或前K个数据包携带第一信息，其它数据包携带第一数据包组的标识，K为大于1的整数。基于该方法，在第一数据包组的部分数据包内(也即第一数据包组的第一个或前K个数据包)携带第一信息，在第一数据包组的其它部分数据包内携带第一信息的部分信息(即第一数据包组的标识)，从而可以减少传输第一信息带来的开销。例如，第一数据包组包括60个数据包，前5个数据包的包头(如RTP头)携带第一信息，后55个数据包的包头携带第一数据包组的标识。
作为另一种实现方法，该第一数据包组的前X个数据包中的每个数据包都携带第一信息中的部分信息，其它数据包携带第一数据包组的标识，X为大于1的整数。例如，第一数据包组包括60个数据包，第一个数据包的包头(如RTP头)携带第一数据包组的标识和用于指示第一数据包组的生成时间的信息，第二个数据包的包头携带第一数据包组的标识和第一数据包组的下行传输时间窗信息，第三个数据包的包头携带第一数据包组的标识和第一数据包组的数量信息，其它57个数据包的包头携带第一数据包组的标识。再比如，第一数据包组包括60个数据包，第一个数据包的包头(如RTP头)携带第一数据包组的标识、用于指示第一数据包组的生成时间的信息、第一数据包组的下行传输时间窗信息，第二个数据包的包头携带第一数据包组的标识和用于指示第一数据包组的生成时间的信息，第三个数据包的包头携带第一数据包组的标识和第一数据包组的下行传输时间窗信息，第四个数据包的包头携带第一数据包组的标识和第一数据包组的数量信息，其它56个数据包的包头携带第一数据包组的标识，等等。
基于上述步骤301至步骤302，AF生成第一信息，该第一信息用于指示一个数据包组的特征信息，并将第一信息携带于第一数据包组的数据包内传输至UPF，使得UPF可以基于第一信息对第一数据包组进行传输控制，从而实现了按照数据包组粒度进行传输控制，有助于提升数据包的传输效率以及提升用户体验。
步骤303，UPF获取第一业务数据流的第一数据包组的第一信息。
比如，UPF可以从接收到的一个或多个数据包中获取第一信息。该一个或多个数据包是第一业务数据流的第一数据包组的数据包。
可选的，在上述步骤303之前，UPF还可以从SMF、PCF或其它网元收到指示信息，该指示信息用于指示对第一业务数据流进行数据包组粒度的传输控制。从而，UPF根据该指示信息，执行上述步骤303。
步骤304，UPF向RAN发送第一数据包组的数据包。相应地，RAN收到第一数据包组的数据包。
UPF向RAN发送的第一数据包组的至少一个数据包内携带第一信息。比如，UPF可以在向RAN发送的第一数据包组的所有数据包内携带第一信息；或者，是在第一个数据包内携带第一信息；或者，是在前M个数据包内第一信息，M为大于1的整数。这里的M与前述的K可以相同，也可以不同。
可选的，第一信息可以携带在该第一数据包组的数据包的包头内。这里的包头比如可以是GPRS隧道协议(GPRS Tunneling Protocol，GTP)头，其中GPRS是通用无线分组业务(General packet radio service)的缩写。例如，第一数据包组包括60个数据包，前10个数据包的包头(如GTP头)携带第一信息，后50个数据包的包头携带第一数据包组的标识。
需要说明的是，UPF在从AF收到第一数据包组的数据包后，可以在数据包上加一层 GTP头，该GTP头内可以携带第一信息或者携带第一数据包组的标识。然后，UPF向RAN发送第一数据包组的数据包。也即，UPF向RAN发送的第一数据包组的数据包中可以在RTP层携带第一信息或第一数据包组的标识，以及在GTP层也携带第一信息或第一数据包组的标识。因此，可以理解为，UPF从AF收到的第一数据包组的每个数据包是和第一数据包组的标识一起发送至RAN的，也即发送至RAN的每个数据包都至少携带有第一数据包组的标识。以及，UPF从AF收到的第一数据包组的一个或多个数据包是和第一信息一起发送至RAN的，也即UPF可以仅在收到的第一数据包组的部分数据包上添加第一信息，然后发送至RAN。
当然，作为另一种实现方法，UPF也可以删除RTP头中的第一信息或第一数据包组的标识，仅在GTP头内携带第一信息或第一数据包组的标识。
RAN可以基于收到的第一信息，执行对第一数据包组的完整性传输控制。
可选的，UPF在接收第一数据包组的数据包时，不立即将该数据包发送至RAN，而是对收到的多个数据包进行缓存，然后在将缓存的多个数据包按照一定速率发送至RAN。比如，UPF缓存第一数据包组中的N个数据包，N为大于1的整数，然后UPF获取缓存的N个数据包并向RAN发送N个数据包。基于该方法，有助于避免RAN在短时间内从UPF收到大量数据包而造成流量冲击，或者是在长时间内收不到来自UPF的数据包而造成资源浪费。
作为一种实现方法，UPF可以根据第一数据包组的数量信息，确定缓存的第一数据包组的数据包个数，即上述N的大小。例如，预先向UPF配置：按照一个数据包组的50％的比例进行缓存，也即UPF每收到一个数据包组的50％的数据包，就缓存一次，然后获取缓存的数据包后进行发送。因此，UPF可以确定N＝第一数据包组的数量*50％。
作为一种实现方法，UPF可以根据用于指示第一数据包组的生成时间的信息和第一数据包组的下行传输时间窗信息，确定N个数据包的缓存时间。比如，UPF可以根据用于指示第一数据包组的生成时间的信息和第一数据包组的下行传输时间窗信息，确定第一数据包组的剩余传输时间，然后根据第一数据包组的剩余传输时间确定N个数据包的缓存时间，例如将第一数据包组的剩余传输时间的设定比例，确定为N个数据包的缓存时间。
示例性地，第一数据包组的下行传输时间窗信息指示了AF需要在20ms内将第一数据包组发送至第一终端设备，用于指示第一数据包组的生成时间的信息指示了AF在P1时刻生成并发送第一数据包组，UPF在P2时刻收到第一数据包组，则UPF需要在20-(P2-P1)的时长内将第一数据包组发送至第一终端设备，其中P2-P1表示第一数据包组从AF传输至UPF所经历的时延。第一数据包组的剩余传输时间等于20-(P2-P1)，需要说明的是，这里的第一数据包组的剩余传输时间还包含UPF内部处理第一数据包组的时间。然后，UPF根据第一数据包组的剩余传输时间，确定N个数据包的缓存时间。比如，设定比例为10％，则可以确定N个数据包的缓存时间＝(20-(P2-P1))*10％。
基于上述步骤303至步骤304，UPF获取到第一信息，并将第一信息携带于第一数据包组的数据包内传输至RAN，使得RAN可以基于第一信息对第一数据包组进行传输控制，从而实现了按照数据包组粒度进行传输控制，有助于提升数据包的传输效率以及提升用户体验。并且，通过第一数据包组的下行传输时间窗信息指示了第一数据包组从生成到传输至终端设备的最大可用时长，因此可以实现将一个数据包组在一个时间窗内发送至终端设备，可以满足低时延业务的需求，进一步提升用户的业务体验。
步骤305，RAN根据用于指示第一数据包组的生成时间的信息和第一数据包组的下行传输时间窗信息，确定第一数据包组的剩余传输时间。
示例性地，第一数据包组的下行传输时间窗信息指示了AF需要在20ms内将第一数据包组发送至第一终端设备，用于指示第一数据包组的生成时间的信息指示了AF在P1时刻生成并发送第一数据包组，RAN在P3时刻收到第一数据包组，则RAN需要在20-(P3-P1)的时长内将第一数据包组发送至第一终端设备，其中P3-P1表示第一数据包组从AF传输至RAN所经历的时延。也即第一数据包组的剩余传输时间等于20-(P3-P1)。
这里的第一数据包组的剩余传输时间指的是RAN将第一数据包组传输至第一终端设备的最大可用时长。并且，第一数据包组的剩余传输时间还包含RAN内部处理第一数据包组的时间。
可选的，在上述步骤305之前，RAN还可以从SMF、UPF、PCF或其它网元收到指示信息，该指示信息用于指示对第一业务数据流进行数据包组粒度的传输控制。从而，RAN根据该指示信息，执行上述步骤305。
步骤306，RAN根据第一数据包组的剩余传输时间，向第一终端设备发送第一数据包组的数据包。相应地，第一终端设备收到第一数据包组的数据包。
也即，RAN需要在第一数据包组的剩余传输时间内，将第一数据包组的数据包传输至第一终端设备，如此才能满足业务数据流的时延要求。
作为一种实现方法，RAN可以根据第一数据包组的数量信息和第一数据包组的剩余传输时间，确定第一数据包组对应的调制编码方案(Modulation and Coding Scheme，MCS)，然后根据第一数据包组对应的调制编码方案和第一数据包组的剩余传输时间，向第一终端设备发送第一数据包组的数据包。比如，当第一数据包组的数量较大，但第一数据包组的剩余传输时间较少，则可以确定一个较高等级的调制编码方案，使得RAN可以提升数据包的传输速率，保证第一数据包组的数据包可以在第一数据包组的剩余传输时间内传输至第一终端设备。
由于RAN在第一数据包组的剩余传输时间向第一终端设备发送第一数据包组时，在先发送的数据包具有较为宽裕的剩余时间，而在后发送的数据包的剩余时间更少，因此为了使得第一数据包组的数据包(尤其是在时序上靠后的数据包)能够在第一数据包组的剩余传输时间内被成功传输至第一终端设备，RAN可以将第一数据包组内的数据包，按照时间顺序，划分为两个或两个以上的数据包子组，然后每个数据包子组对应一个调制编码方案，并且时序在先的数据包子组对应的调制编码方案的等级低于时序在后的数据包子组对应的调制编码方案的等级。示例性地，以划分为两个数据包子组为例，RAN根据第一数据包组的数量信息和第一数据包组的剩余传输时间，确定第一数据包组中的在先收到的第一部分数据包(也即第一个数据包子组)对应的第一调制编码方案和第一数据包组中的在后收到的第二部分数据包(也即第二个数据包子组)对应的第二调制编码方案；其中，第一调制编码方案的等级低于第二调制编码方案的等级，然后RAN根据第一调制编码方案和第一数据包组的剩余传输时间，向第一终端设备发送第一数据包组的第一部分数据包，以及根据第二调制编码方案和第一数据包组的剩余传输时间，向第一终端设备发送第一数据包组的第二部分数据包。
基于上述步骤304至步骤306，RAN接收到第一数据包组的数据包，并获取到第一信息，从而可以基于第一信息对第一数据包组进行传输控制，从而实现了按照数据包组粒度 进行传输控制，有助于提升数据包的传输效率以及提升用户体验。并且，通过第一数据包组的下行传输时间窗信息指示了第一数据包组从生成到传输至终端设备的最大可用时长，因此可以实现将一个数据包组在一个时间窗内发送至终端设备，可以满足低时延业务的需求，进一步提升用户的业务体验。
为了保障不同终端设备的同步，比如在不同终端设备上同时显示相同的图像，或者同时播放相同的音频等。当UPF从AF收到需要发送给不同终端设备的数据包组时，UPF可以不同数据包组的数据包内携带的完整性传输信息，确定不同数据包组的下行传输时间窗信息，以保障终端设备之间的同步。为便于说明，以下以两个终端设备之间的同步为例进行说明。
参考图4，为本申请实施例提供的另一种业务数据流的传输方法示意图，该方法包括以下步骤：
步骤401，AF生成第一业务数据流的第一数据包组的第一信息。
该步骤401同上述步骤301，可参考前述描述。
步骤402，AF生成第二业务数据流的第二数据包组的第二信息。
该步骤402与上述步骤401类似，可参考前述描述。
第二信息包括第二业务数据流的第二数据包组的标识、用于指示第二数据包组的生成时间的信息和第二数据包组的下行传输时间窗信息，可选的，第二信息还包括第二数据包组的数量信息。其中，第二信息内的各个参数的含义与第一信息内的各个参数的含义类似，可以参考前述描述，不再赘述。
第二业务数据流是AF与第二终端设备之间的业务数据流，该业务数据流包括一个或多个数据包组，一个数据包组包含多个数据包。其中，将第二业务数据流中的任意一个数据包组称为第二数据包组，该第二数据包组与上述第一数据包组对应，例如第二数据包组的数据包与第一数据包组的数据包携带相同的数据内容。
可选的，第一数据包组的标识与第二数据包组的标识相同，用于指示第一数据包组的生成时间的信息与用于指示第二数据包组的生成时间的信息相同，第一数据包组的数量信息与第二数据包组的数量信息相同，但第一数据包组的下行传输时间窗信息与第二数据包组的下行传输时间窗信息不同。
步骤403，AF向UPF发送第一数据包组的数据包。相应地，UPF收到第一数据包组的数据包。
该步骤403同上述步骤302，可参考前述描述。
步骤404，AF向UPF发送第二数据包组的数据包。相应地，UPF收到第二数据包组的数据包。
该步骤404与上述步骤403类似，可参考前述描述。
步骤405，UPF获取第一业务数据流的第一数据包组的第一信息。
该步骤401同上述步骤303，可参考前述描述。
步骤406，UPF获取第二业务数据流的第二数据包组的第二信息。
该步骤406与上述步骤405类似，可参考前述描述。
步骤407，UPF向RAN发送第一数据包组的数据包。相应地，RAN收到第一数据包组的数据包。
步骤408，UPF向RAN发送第二数据包组的数据包。相应地，RAN收到第二数据包组的数据包。
上述步骤407和步骤408的实现方法可以是：UPF根据第一数据包组的数量信息、第二数据包组的数量信息、第一数据包组的下行传输时间窗信息和第二数据包组的下行传输时间窗信息，确定第一数据包组的调度优先级和第二数据包组的调度优先级。然后，UPF根据第一数据包组的调度优先级向RAN发送第一数据包组的数据包，根据第二数据包组的调度优先级向RAN发送第二数据包组的数据包。比如，第一数据包组的调度优先级高于第二数据包组的调度优先级，则优先发送第一数据包组。再比如，第二数据包组的调度优先级高于第一数据包组的调度优先级，则优先发送第二数据包组。
作为一种实现方法，UPF可以根据以下方法确定第一数据包组的调度优先级和第二数据包组的调度优先级：UPF根据第一数据包组的数量信息和第一业务数据流的速率确定第一数据包组的处理时间，以及根据第一数据包组的处理时间、用于指示第一数据包组的生成时间的信息和第一数据包组的下行传输时间窗信息确定第一数据包组的剩余传输时间；同样的，UPF根据第二数据包组的数量信息和第二业务数据流的速率确定第二数据包组的处理时间，以及根据第二数据包组的处理时间、用于指示第二数据包组的生成时间的信息和第二数据包组的下行传输时间窗信息确定第二数据包组的剩余传输时间，接着，UPF根据第一数据包组的剩余传输时间和第二数据包组的剩余传输时间，确定第一数据包组的调度优先级和第二数据包组的调度优先级。比如，第一数据包组的剩余传输时间大于第二数据包组的剩余传输时间，则第一数据包组的调度优先级低于第二数据包组的调度优先级。再比如，第一数据包组的剩余传输时间小于第二数据包组的剩余传输时间，则第一数据包组的调度优先级高于第二数据包组的调度优先级。
示例性地，针对第一数据包组：
用于指示第一数据包组的生成时间的信息指示了第一数据包组的生成时刻为P1，UPF对第一数据包组的处理时间为T1，第一数据包组的下行传输时间窗信息指示了第一数据包组从生成到传输至第一终端设备的最大可用时长为T2，UPF收到第一数据包组的时刻为P2，则UPF确定的第一数据包组的剩余传输时间为：T2-T1-(P2-P1)。需要说明的是，上述T1和T2为一个时长，P1和P2为一个时间点。
示例性地，针对第二数据包组：
用于指示第二数据包组的生成时间的信息指示了第二数据包组的生成时刻为P3，UPF对第二数据包组的处理时间为T3，第二数据包组的下行传输时间窗信息指示了第二数据包组从生成到传输至第二终端设备的最大可用时长为T4，UPF收到第二数据包组的时刻为P4，则UPF确定的第二数据包组的剩余传输时间为：T4-T3-(P4-P3)。需要说明的是，上述T3和T4为一个时长，P3和P4为一个时间点。
需要说明的是，这里的第一数据包组的剩余传输时间已经去除了UPF内部处理第一数据包组的处理时间，也即第一数据包组的剩余传输时间表示UPF发送第一数据包组到第一终端设备收到第一数据包组之间的最长可用时长。同样地，第二数据包组的剩余传输时间已经去除了UPF内部处理第二数据包组的处理时间，也即第二数据包组的剩余传输时间表示UPF发送第二数据包组到第二终端设备收到第二数据包组之间的最长可用时长。
步骤409，RAN根据用于指示第一数据包组的生成时间的信息和第一数据包组的下行 传输时间窗信息，确定第一数据包组的剩余传输时间。
该步骤409同上述步骤305，可参考前述描述。
步骤410，RAN根据用于指示第二数据包组的生成时间的信息和第二数据包组的下行传输时间窗信息，确定第二数据包组的剩余传输时间。
该步骤410与上述步骤409类似，可参考前述描述。
步骤411，RAN根据第一数据包组的剩余传输时间，向第一终端设备发送第一数据包组的数据包。相应地，第一终端设备收到第一数据包组的数据包。
步骤412，RAN根据第二数据包组的剩余传输时间，向第二终端设备发送第二数据包组的数据包。相应地，第二终端设备收到第二数据包组的数据包。
上述步骤407和步骤408的实现方法可以是：RAN根据第一数据包组的剩余传输时间和第二数据包组的剩余传输时间，确定第一数据包组的调度优先级和第二数据包组的调度优先级，然后根据第一数据包组的调度优先级和第一数据包组的剩余传输时间向第一终端设备发送第一数据包组的数据包，以及根据第二数据包组的调度优先级和第二数据包组的剩余传输时间向第二终端设备发送第二数据包组的数据包。比如，第一数据包组的调度优先级高于第二数据包组的调度优先级，则优先发送第一数据包组。再比如，第二数据包组的调度优先级高于第一数据包组的调度优先级，则优先发送第二数据包组。
需要说明的是，上述与第一数据包组有关的步骤(如步骤401、403、405、407、409、411)中的部分步骤，与上述与第二数据包组有关的步骤(如步骤402、404、406、408、410、412)中的部分步骤之间没有严格的先后执行顺序的要求。
基于上述方案，当多个终端设备由于处理能力不同，可以通过UPF和RAN的控制，使得多个终端设备可以保持同步，从而提升用户的业务体验。并且，还可以实现将一个数据包组在一个时间窗内发送至终端设备，从而可以满足低时延业务的需求，进一步提升用户的业务体验。
作为示例，下面结合图5和图6所示的具体实施例，对上述图3所示的实施例进行说明。
如图5所示，为申请实施例提供的另一种业务数据流的传输方法示意图。该方法给出了业务数据流信息的配置过程，具体的，由AF通过NEF将业务数据流信息提供给网络。其中，业务数据流信息包括应用的标识、业务数据流的标识信息和业务数据流的需求信息。
其中，应用的标识(Application ID)用于标识媒体等具体业务，可以为设定的字符。
业务数据流的标识信息包括但不限于以下信息中的一个或多个：IP三元组、统一资源定位符(Uniform Resource Locator，URL)。其中，IP三元组包括AF的IP地址、端口号和协议号。
业务数据流的需求信息包括但不限于以下信息中的一个或多个：比特率(bitrate)、丢包率(Packet Error Rate，PER)、分组时延预算(Packet Delay Budget，PDB)。
可选的，业务数据流的需求信息还包括字段描述信息。字段描述信息包括数据包组的标识字段描述信息、数据包组的生成时间字段描述信息和数据包组的下行传输时间窗字段描述信息，还可以包括数据包组的数量字段描述信息。其中，数据包组的标识字段描述信息指示了数据包组的标识字段用于承载数据包组的标识，数据包组的生成时间字段描述信息指示了数据包组的生成时间字段用于承载用于指示第一数据包组的生成时间的信息，数 据包组的下行传输时间窗字段描述信息指示了数据包组的下行传输时间窗字段用于承载数据包组的下行传输时间窗信息，数据包组的数量字段描述信息指示了数据包组的数量字段用于承载数据包组的数量信息。
该方法包括以下步骤：
步骤501，AF向NEF发送第一请求。相应地，NEF可以接收到该第一请求。
其中，第一请求中携带新增的业务数据流信息、或更新的业务数据流信息。
在一种实现方法中，AF准备增加新的业务数据流信息时，AF向NEF发送第一请求，该第一请求可以是业务数据流创建请求，比如具体可以是PFDManagement_Create Request，业务数据流创建请求携带新增的业务数据流信息。
在另一种实现方法中，AF准备更新现有的业务数据流信息时，AF向NEF发送第一请求，该第一请求可以是业务数据流更新请求，比如具体可以是PFDManagement_Update Request，业务数据流更新请求携带更新的业务数据流信息。
步骤502，NEF更新NEF上保存的业务数据流信息。
比如，NEF先判断是否允许第一请求，如果允许则更新NEF上保存的业务数据流信息。比如，若第一请求携带新增的业务数据流信息，则NEF根据新增的业务数据流信息，更新NEF上保存的业务数据流信息。再比如，若第一请求携带更新的业务数据流信息，则NEF根据更新的业务数据流信息，更新NEF上保存的业务数据流信息。
步骤503，NEF向AF发送第一响应。相应地，AF可以接收到该第一响应。
该第一响应用于通知AF的请求处理成功。
当然，如果上述步骤502中，NEF确定不允许第一请求、或NEF更新业务数据流信息失败，则第一响应用于通知AF的请求处理失败。
第一响应具体可以是业务数据流创建响应、或业务数据流更新响应。
步骤504，NEF向UDR发送第二请求。相应地，UDR可以接收到该第二请求。
其中，第二请求中携带新增的业务数据流信息、或更新的业务数据流信息。
在一种实现方法中，NEF准备增加新的业务数据流信息时，NEF向UDR发送第二请求，该第二请求可以是数据管理创建请求(DM_Create Request)，数据管理创建请求携带新增的业务数据流信息。
在另一种实现方法中，NEF准备更新现有的业务数据流信息时，NEF向UDR发送第二请求，该第二请求可以是数据管理更新请求(DM_Update Request)，数据管理更新请求携带更新的业务数据流信息。
步骤505，UDR更新UDR上保存的业务数据流信息。
比如，若第二请求携带新增的业务数据流信息，则UDR根据新增的业务数据流信息，更新UDR上保存的业务数据流信息。再比如，若第二请求携带更新的业务数据流信息，则UDR根据更新的业务数据流信息，更新UDR上保存的业务数据流信息。
步骤506，UDR向NEF发送第二响应。相应地，NEF可以接收到该第二响应。
该第二响应用于通知NEF的请求处理成功。
当然，如果上述步骤505中，UDR更新业务数据流信息失败，则第二响应用于通知NEF的请求处理失败。
第二响应具体可以是数据管理创建响应(DM_Create Response)、或数据管理更新响应(DM_Update Response)。
步骤507，SMF确定需要获取业务数据流信息。
比如，SMF上设置一个定时器，每到设定时长就触发SMF获取业务数据流信息。
其中，SMF确定需要获取业务数据流信息，可以是确定需要获取新增的业务数据流信息、或确定需要获取更新的业务数据流信息。
步骤508，SMF向NEF发送第三请求。相应地，NEF可以接收到该第三请求。
该第三请求用于请求获取业务数据流信息。
比如，第三请求可以是PFDManagement_Fetch Request。
步骤509，NEF向SMF发送第三响应。相应地，SMF可以接收到该第三响应。
该第三响应携带新增的业务数据流信息、或更新的业务数据流信息。
比如，第三响应可以是PFDManagement_Fetch Response。
SMF接收到新增的业务数据流信息、或更新的业务数据流信息后，在SMF上保存新增的业务数据流信息、或更新的业务数据流信息。
上述步骤507至步骤509是由SMF主动向NEF请求获取业务数据流信息，作为另一种实现方法，还可以是由NEF在接收到新增的业务数据流信息、或更新的业务数据流信息后，主动向SMF上报新增的业务数据流信息、或更新的业务数据流信息。或者，作为另一种实现方法，还可以是由SMF主动向UDR请求获取业务数据流信息。
步骤510，SMF向UPF发送第四请求。相应地，UPF可以接收到该第四请求。
其中，第四请求中携带新增的业务数据流信息、或更新的业务数据流信息。
比如，第四请求可以是PFD Management Request。
UPF可以按照新增的业务数据流信息、或更新的业务数据流信息进行数据流检测，识别新的业务数据流。
上述实施例中，由AF提供新增的业务数据流信息、或更新的业务数据流信息，并更新至网络中的NEF、UDR或SMF。在具体实现中，可以是仅更新至网络中的NEF、UDR、SMF中的一个或多个网元，或者还可以是更新至网络中的其他网元，如AMF、PCF等。以及，还将业务数据流信息更新至UPF，使得UPF可以开始检测新的业务数据流。
步骤511，UPF向SMF发送第四响应。相应地，SMF可以接收到该第四响应。
该步骤可选。
基于上述实施例，可以使网络获取和配置指定的业务数据流信息，从而可以检测到对应的业务数据流，后续可以基于业务数据流信息进行数据流的传输。
如图6所示，为申请实施例提供的另一种业务数据流的传输方法示意图。该方法包括以下步骤：
步骤601，终端设备与AF建立应用的业务数据流连接。
终端设备与AF建立应用的业务数据流连接，比如可以是终端设备中的应用与AF中的应用建立应用层的业务数据流连接。可选的，可以采用RTP协议建立应用层的业务数据流连接。
其中，该业务数据流的IP三元组或URL，与AF预先提供给网络的业务数据流信息中的IP三元组或URL保持一致。比如，AF按照图5实施例的方法向网络提供了业务数据流信息，则该步骤601的业务数据流的IP三元组或URL，与图5实施例的业务数据流信息中的IP三元组或URL保持一致。
步骤602，UPF根据配置的包检测规则做包检测，检测到有指定的业务对应的业务数据流时，向PCF发送事件报告，事件报告中携带检测的分组数据流描述(Packet Flow Description，PFD)标识。
比如，若UPF上预先配置了业务对应的业务数据流信息(比如通过图5实施例的步骤510配置的)，则该UPF可以将业务数据流信息中的IP三元组或URL作为包检测规则的参数，来进行包检测。
作为另一实现方法，UPF也可以将事件报告发给SMF，然后SMF再将事件报告发给PCF。
步骤603，PCF向SMF发送策略计费控制(Policy and Charging Control，PCC)规则。相应地，SMF可以接收到PCC规则。
PCF可以先从UDR、或SMF等网元获取业务数据流信息，然后根据业务数据流信息生成PCC规则。当业务采用多数据流传输时，PCF提供为每个业务数据流生成一个PCC规则，然后PCF向SMF发送PCC规则。每个PCC规则包括QoS流的QoS等级标识(QoS Class Identifier，QCI)和完整性传输策略信息，该完整性传输策略信息包括业务数据流检测规则和指示信息，该指示信息用于指示数据包组粒度的传输控制。
作为一种实现方法，该步骤中PCF可以向SMF发送SMF initiated SM_Policy Association Modefication Request，其中携带PCC规则。
步骤604，SMF向UPF发送业务数据流的配置信息。相应地，UPF可以接收到业务数据流的配置信息。
配置信息包含指示信息，该指示信息用于指示对该业务数据流进行数据包组粒度的传输控制。该配置信息携带的指示信息是SMF根据从PCC规则中收到的完整性传输策略信息确定的。
例如，SMF可以通过N4消息(如N4PDU Establishment Modification Request、或N4PDU Session Modification Request)将业务数据流的配置信息发送给UPF。
UPF收到配置信息后，根据配置信息中的指示信息对业务数据流进行数据包组粒度的传输控制，具体实现方法可以参考图3对应的实施例中的相关描述，这里不再赘述。
步骤605，SMF通过AMF将业务数据流的配置信息发送给RAN。相应地，RAN可以接收到业务数据流的配置信息。
配置信息包含指示信息，该指示信息用于指示对该业务数据流进行数据包组粒度的传输控制。该配置信息携带的指示信息是SMF根据从PCC规则中收到的完整性传输策略信息确定的。
RAN收到配置信息后，根据配置信息中的指示信息对业务数据流进行数据包组粒度的传输控制，具体实现方法可以参考图3对应的实施例中的相关描述，这里不再赘述。
基于上述实施例，在终端设备中的应用与AF建立应用的业务数据流连接之后，可以将业务数据流的配置信息发送给RAN和UPF，由RAN和UPF根据配置信息进行业务数据流的数据包组粒度的调度和传输控制，从而可以提升业务数据流的传输效率。
上述主要从各个网元之间交互的角度对本申请提供的方案进行了介绍。可以理解的是，上述实现各网元为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件 还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
可以理解的是，上述各个方法实施例中，对应由网络设备实现的步骤或者操作，也可以由配置于网络设备的部件(例如芯片或者电路)实现，对应由接入网设备实现的步骤或者操作，也可以由配置于接入网设备的部件(例如芯片或者电路)实现，对应由应用功能网元实现的步骤或者操作，也可以由配置于应用功能网元的部件(例如芯片或者电路)实现。
参考图7，为本申请实施例提供的一种通信装置的示意图。该装置用于实现上述实施例中对应网络设备、接入网设备或应用功能网元所执行的各个步骤，如图7所示，该装置700包括收发单元710和处理单元720。
在第一个实施例中，该通信装置为网络设备或为用于网络设备的芯片，则：
所述处理单元720，用于从通过所述收发单元710接收到的一个或多个数据包中获取第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述一个或多个数据包为第一业务数据流的第一数据包组的数据包，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；所述收发单元710，用于向接入网设备发送所述第一数据包组的数据包，所述第一数据包组的数据包是与所述第一数据包组的标识一起发送的，所述第一数据包组中的至少一个数据包是与所述第一数据包组的标识、所述用于指示所述第一数据包组的生成时间的信息以及所述第一数据包组的下行传输时间窗信息一起发送的。
在第二个实施例中，该通信装置为接入网设备或为用于接入网设备的芯片，则：
收发单元710，用于从接收到的至少一个数据包中获取用于指示第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述至少一个数据包为第一业务数据流的第一数据包组的数据包，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；处理单元720，用于根据用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，确定所述第一数据包组的剩余传输时间；以及，用于根据所述第一数据包组的剩余传输时间，通过所述收发单元710向终端设备发送所述第一数据包组的数据包。
在第三个实施例中，该通信装置为应用功能网元或为用于应用功能网元的芯片，则：
处理单元720，用于生成第一业务数据流的第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；收发单元710，用于向网络设备发送所述第一数据包组的数据包，所述第一数据包组的数据包是与所述第一数据包组的标识一起发送的，所述第一数据包组的一个或多个数据包携带所述第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息。
可选的，上述通信装置700还可以包括存储单元，该存储单元用于存储数据或者指令(也可以称为代码或者程序)，上述各个单元可以和存储单元交互或者耦合，以实现对应的方法或者功能。例如，处理单元720可以读取存储单元中的数据或者指令，使得通信装置实现上述实施例中的方法。
应理解以上装置中单元的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且装置中的单元可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分单元以软件通过处理元件调用的形式实现，部分单元以硬件的形式实现。例如，各个单元可以为单独设立的处理元件，也可以集成在装置的某一个芯片中实现，此外，也可以以程序的形式存储于存储器中，由装置的某一个处理元件调用并执行该单元的功能。此外这些单元全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件又可以成为处理器，可以是一种具有信号的处理能力的集成电路。在实现过程中，上述方法的各步骤或以上各个单元可以通过处理器元件中的硬件的集成逻辑电路实现或者以软件通过处理元件调用的形式实现。
在一个例子中，以上任一装置中的单元可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)，或这些集成电路形式中至少两种的组合。再如，当装置中的单元可以通过处理元件调度程序的形式实现时，该处理元件可以是通用处理器，例如中央处理器(Central Processing Unit，CPU)或其它可以调用程序的处理器。再如，这些单元可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
以上收发单元710是一种该装置的接口电路，用于向其它装置发送信号或从其它装置接收信号。例如，当该装置以芯片的方式实现时，该收发单元710是该芯片用于向其它芯片或装置发送信号的接口电路，或用于从其它芯片或装置接收信号的接口电路。
参考图8，为本申请实施例提供的一种通信装置示意图。用于实现以上实施例中对应于网络设备、接入网设备或应用功能网元的操作。如图8所示，该通信装置包括：处理器810和接口830，可选的，该通信装置还包括存储器820。接口830用于实现与其他设备进行通信。
以上实施例中网络设备、接入网设备或应用功能网元执行的方法可以通过处理器810调用存储器(可以是网络设备、接入网设备或应用功能网元中的存储器820，也可以是外部存储器)中存储的程序来实现。即，网络设备、接入网设备或应用功能网元可以包括处理器810，该处理器810通过调用存储器中的程序，以执行以上方法实施例中网络设备、接入网设备或应用功能网元执行的方法。这里的处理器可以是一种具有信号的处理能力的集成电路，例如CPU。网络设备、接入网设备或应用功能网元可以通过配置成实施以上方法的一个或多个集成电路来实现。例如：一个或多个ASIC，或，一个或多个微处理器DSP，或，一个或者多个FPGA等，或这些集成电路形式中至少两种的组合。或者，可以结合以上实现方式。
具体的，图7中的收发单元710和处理单元720的功能/实现过程可以通过图8所示的通信装置800中的处理器810调用存储器820中存储的计算机可执行指令来实现。或者，图7中的处理单元720的功能/实现过程可以通过图8所示的通信装置800中的处理器810 调用存储器820中存储的计算机执行指令来实现，图7中的收发单元710的功能/实现过程可以通过图8中所示的通信装置800中的接口830来实现。
本领域普通技术人员可以理解：本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围，也表示先后顺序。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。“至少一个”是指一个或者多个。至少两个是指两个或者多个。“至少一个”、“任意一个”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个、种)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。“多个”是指两个或两个以上，其它量词与之类似。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包括一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
本申请实施例中所描述的各种说明性的逻辑单元和电路可以通过通用处理器，数字信号处理器，专用集成电路(ASIC)，现场可编程门阵列(FPGA)或其它可编程逻辑装置，离散门或晶体管逻辑，离散硬件部件，或上述任何组合的设计来实现或操作所描述的功能。通用处理器可以为微处理器，可选地，该通用处理器也可以为任何传统的处理器、控制器、微控制器或状态机。处理器也可以通过计算装置的组合来实现，例如数字信号处理器和微处理器，多个微处理器，一个或多个微处理器联合一个数字信号处理器核，或任何其它类似的配置来实现。
本申请实施例中所描述的方法或算法的步骤可以直接嵌入硬件、处理器执行的软件单元、或者这两者的结合。软件单元可以存储于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、EPROM存储器、EEPROM存储器、寄存器、硬盘、可移动磁盘、CD-ROM或本领域中其它任意形式的存储媒介中。示例性地，存储媒介可以与处理器连接，以使得处理器可以从存储媒介中读取信息，并可以 向存储媒介存写信息。可选地，存储媒介还可以集成到处理器中。处理器和存储媒介可以设置于ASIC中。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
在一个或多个示例性的设计中，本申请所描述的上述功能可以在硬件、软件、固件或这三者的任意组合来实现。如果在软件中实现，这些功能可以存储与电脑可读的媒介上，或以一个或多个指令或代码形式传输于电脑可读的媒介上。电脑可读媒介包括电脑存储媒介和便于使得让电脑程序从一个地方转移到其它地方的通信媒介。存储媒介可以是任何通用或特殊电脑可以接入访问的可用媒体。例如，这样的电脑可读媒体可以包括但不限于RAM、ROM、EEPROM、CD-ROM或其它光盘存储、磁盘存储或其它磁性存储装置，或其它任何可以用于承载或存储以指令或数据结构和其它可被通用或特殊电脑、或通用或特殊处理器读取形式的程序代码的媒介。此外，任何连接都可以被适当地定义为电脑可读媒介，例如，如果软件是从一个网站站点、服务器或其它远程资源通过一个同轴电缆、光纤电脑、双绞线、数字用户线(DSL)或以例如红外、无线和微波等无线方式传输的也被包含在所定义的电脑可读媒介中。所述的碟片(disk)和磁盘(disc)包括压缩磁盘、镭射盘、光盘、数字通用光盘(英文：Digital Versatile Disc，简称：DVD)、软盘和蓝光光盘，磁盘通常以磁性复制数据，而碟片通常以激光进行光学复制数据。上述的组合也可以包含在电脑可读媒介中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。本申请说明书的上述描述可以使得本领域技术任何可以利用或实现本申请的内容，任何基于所公开内容的修改都应该被认为是本领域显而易见的，本申请所描述的基本原则可以应用到其它变形中而不偏离本申请的发明本质和范围。因此，本申请所公开的内容不仅仅局限于所描述的实施例和设计，还可以扩展到与本申请原则和所公开的新特征一致的最大范围。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包括这些改动和变型在内。

Claims (27)

  1. 一种业务数据流的传输方法，其特征在于，包括：
    网络设备从接收到的一个或多个数据包中获取第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述一个或多个数据包为第一业务数据流的所述第一数据包组的数据包，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；
    所述网络设备向接入网设备发送所述第一数据包组的数据包，所述第一数据包组的数据包是与所述第一数据包组的标识一起发送的，所述第一数据包组中的至少一个数据包是与所述第一数据包组的标识、所述用于指示所述第一数据包组的生成时间的信息以及所述第一数据包组的下行传输时间窗信息一起发送的。
  2. 如权利要求1所述的方法，其特征在于，还包括：
    所述网络设备接收来自应用功能网元的所述一个或多个数据包。
  3. 如权利要求1或2所述的方法，其特征在于，还包括：
    所述网络设备缓存所述第一数据包组中的N个数据包，N为大于1的整数；
    所述网络设备向接入网设备发送所述第一数据包组的数据包，包括：
    所述网络设备获取缓存的所述N个数据包，并向接入网设备发送所述N个数据包。
  4. 如权利要求3所述的方法，其特征在于，还包括：
    所述网络设备从接收到的所述一个或多个数据包中获取所述第一数据包组的数量信息；
    所述网络设备根据所述第一数据包组的数量信息，确定缓存的所述第一数据包组的数据包个数N。
  5. 如权利要求3或4所述的方法，其特征在于，还包括：
    所述网络设备根据用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，确定所述N个数据包的缓存时间。
  6. 如权利要求1或2所述的方法，其特征在于，还包括：
    所述网络设备从接收到的所述一个或多个数据包中获取所述第一数据包组的数量信息；
    所述网络设备从接收到的一个或多个数据包中获取第二数据包组的标识、所述第二数据包组的数量信息、用于指示所述第二数据包组的生成时间的信息和所述第二数据包组的下行传输时间窗信息，所述一个或多个数据包为第二业务数据流的所述第二数据包组的数据包；
    所述网络设备根据所述第一数据包组的数量信息、所述第二数据包组的数量信息、用于指示所述第一数据包组的生成时间的信息、用于指示所述第二数据包组的生成时间的信息、所述第一数据包组的下行传输时间窗信息和所述第二数据包组的下行传输时间窗信息，确定所述第一数据包组的调度优先级；
    所述网络设备向接入网设备发送所述第一数据包组的数据包，包括：
    所述网络设备根据所述第一数据包组的调度优先级，向所述接入网设备发送所述第一数据包组的数据包。
  7. 如权利要求6所述的方法，其特征在于，所述网络设备根据所述第一数据包组的 数量信息、所述第二数据包组的数量信息、用于指示所述第一数据包组的生成时间的信息、用于指示所述第二数据包组的生成时间的信息、所述第一数据包组的下行传输时间窗信息和所述第二数据包组的下行传输时间窗信息，确定所述第一数据包组的调度优先级，包括：
    所述网络设备根据所述第一数据包组的数量信息和所述第一业务数据流的速率，确定所述第一数据包组的处理时间；以及根据所述第一数据包组的处理时间、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，确定所述第一数据包组的剩余传输时间；
    所述网络设备根据所述第二数据包组的数量信息和所述第二业务数据流的速率，确定所述第二数据包组的处理时间；以及根据所述第二数据包组的处理时间、用于指示所述第二数据包组的生成时间的信息和所述第二数据包组的下行传输时间窗信息，确定所述第二数据包组的剩余传输时间；
    所述网络设备根据所述第一数据包组的剩余传输时间和所述第二数据包组的剩余传输时间，确定所述第一数据包组的调度优先级。
  8. 如权利要求1至7中任一项所述的方法，其特征在于，还包括：
    所述网络设备接收指示信息，所述指示信息用于指示对所述第一业务数据流进行数据包组粒度的传输控制。
  9. 一种业务数据流的传输方法，其特征在于，包括：
    接入网设备从接收到的至少一个数据包中获取用于指示第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述至少一个数据包为第一业务数据流的所述第一数据包组的数据包，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；
    所述接入网设备根据用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，确定所述第一数据包组的剩余传输时间；
    所述接入网设备根据所述第一数据包组的剩余传输时间，向终端设备发送所述第一数据包组的数据包。
  10. 如权利要求9所述的方法，其特征在于，还包括：
    所述接入网设备从接收到的所述至少一个数据包中获取所述第一数据包组的数量信息；
    所述接入网设备根据所述第一数据包组的数量信息和所述第一数据包组的剩余传输时间，确定所述第一数据包组对应的调制编码方案；
    所述接入网设备根据所述第一数据包组的剩余传输时间，向终端设备发送所述第一数据包组的数据包，包括：
    所述接入网设备根据所述第一数据包组对应的调制编码方案和所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的数据包。
  11. 如权利要求10所述的方法，其特征在于，所述接入网设备根据所述第一数据包组的数量信息和所述第一数据包组的剩余传输时间，确定所述第一数据包组对应的调制编码方案，包括：
    所述接入网设备根据所述第一数据包组的数量信息和所述第一数据包组的剩余传输时间，确定所述第一数据包组中的在先收到的第一部分数据包对应的第一调制编码方案和所述第一数据包组中的在后收到的第二部分数据包对应的第二调制编码方案；其中，所述 第一调制编码方案的等级低于所述第二调制编码方案的等级；
    所述接入网设备根据所述第一数据包组对应的调制编码方案和所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的数据包，包括：
    所述接入网设备根据所述第一调制编码方案和所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的第一部分数据包；
    所述接入网设备根据所述第二调制编码方案和所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的第二部分数据包。
  12. 如权利要求9所述的方法，其特征在于，还包括：
    所述接入网设备从接收到的至少一个数据包中获取用于指示第二数据包组的生成时间的信息和所述第二数据包组的下行传输时间窗信息，所述至少一个数据包为第二业务数据流的所述第二数据包组的数据包；
    所述接入网设备根据用于指示所述第二数据包组的生成时间的信息和第二数据包组的下行传输时间窗信息，确定所述第二数据包组的剩余传输时间；
    所述接入网设备根据所述第一数据包组的剩余传输时间和所述第二数据包组的剩余传输时间，确定所述第一数据包组的调度优先级；
    所述接入网设备根据所述第一数据包组的剩余传输时间，向终端设备发送所述第一数据包组的数据包，包括：
    所述接入网设备根据所述第一数据包组的调度优先级和所述第一数据包组的剩余传输时间，向所述终端设备发送所述第一数据包组的数据包。
  13. 如权利要求9至12中任一项所述的方法，其特征在于，还包括：
    所述接入网设备接收指示信息，所述指示信息用于指示对所述第一业务数据流进行数据包组粒度的传输控制。
  14. 一种通信装置，其特征在于，包括处理单元和收发单元；
    所述处理单元，用于从通过所述收发单元接收到的一个或多个数据包中获取第一数据包组的标识、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述一个或多个数据包为第一业务数据流的所述第一数据包组的数据包，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；
    所述收发单元，用于向接入网设备发送所述第一数据包组的数据包，所述第一数据包组的数据包是与所述第一数据包组的标识一起发送的，所述第一数据包组中的至少一个数据包是与所述第一数据包组的标识、所述用于指示所述第一数据包组的生成时间的信息以及所述第一数据包组的下行传输时间窗信息一起发送的。
  15. 如权利要求14所述的装置，其特征在于，所述收发单元，还用于接收来自应用功能网元的所述一个或多个数据包。
  16. 如权利要求14或15所述的装置，其特征在于，所述处理单元，还用于缓存所述第一数据包组中的N个数据包，N为大于1的整数；以及，用于获取缓存的所述N个数据包；
    所述收发单元，用于向接入网设备发送所述第一数据包组的数据包，具体包括：
    用于向接入网设备发送缓存的所述N个数据包。
  17. 如权利要求16所述的装置，其特征在于，
    所述处理单元，还用于从接收到的所述一个或多个数据包中获取所述第一数据包组的数量信息；根据所述第一数据包组的数量信息，确定缓存的所述第一数据包组的数据包个数N。
  18. 如权利要求16或17所述的装置，其特征在于，所述处理单元，还用于根据用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，确定所述N个数据包的缓存时间。
  19. 如权利要求14或15所述的装置，其特征在于，
    所述处理单元，还用于从接收到的所述一个或多个数据包中获取所述第一数据包组的数量信息；从接收到的一个或多个数据包中获取所述第二数据包组的标识、所述第二数据包组的数量信息、用于指示所述第二数据包组的生成时间的信息和所述第二数据包组的下行传输时间窗信息，所述一个或多个数据包为第二业务数据流的所述第二数据包组的数据包；根据所述第一数据包组的数量信息、所述第二数据包组的数量信息、用于指示所述第一数据包组的生成时间的信息、用于指示所述第二数据包组的生成时间的信息、所述第一数据包组的下行传输时间窗信息和所述第二数据包组的下行传输时间窗信息，确定所述第一数据包组的调度优先级；
    所述收发单元，用于向接入网设备发送所述第一数据包组的数据包，具体包括：
    用于根据所述第一数据包组的调度优先级，向所述接入网设备发送所述第一数据包组的数据包。
  20. 如权利要求19所述的装置，其特征在于，所述处理单元，用于根据所述第一数据包组的数量信息、所述第二数据包组的数量信息、用于指示所述第一数据包组的生成时间的信息、用于指示所述第二数据包组的生成时间的信息、所述第一数据包组的下行传输时间窗信息和所述第二数据包组的下行传输时间窗信息，确定所述第一数据包组的调度优先级，具体包括：
    用于根据所述第一数据包组的数量信息和所述第一业务数据流的速率，确定所述第一数据包组的处理时间；以及根据所述第一数据包组的处理时间、用于指示所述第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，确定所述第一数据包组的剩余传输时间；根据所述第二数据包组的数量信息和所述第二业务数据流的速率，确定所述第二数据包组的处理时间；以及根据所述第二数据包组的处理时间、用于指示所述第二数据包组的生成时间的信息和所述第二数据包组的下行传输时间窗信息，确定所述第二数据包组的剩余传输时间；根据所述第一数据包组的剩余传输时间和所述第二数据包组的剩余传输时间，确定所述第一数据包组的调度优先级。
  21. 如权利要求14至20中任一项所述的装置，其特征在于，所述收发单元，还用于接收指示信息，所述指示信息用于指示对所述第一业务数据流进行数据包组粒度的传输控制。
  22. 一种通信装置，其特征在于，包括：
    收发单元，用于从接收到的至少一个数据包中获取用于指示第一数据包组的生成时间的信息和所述第一数据包组的下行传输时间窗信息，所述至少一个数据包为第一业务数据流的所述第一数据包组的数据包，所述第一业务数据流包括至少两个数据包组，所述第一数据包组为所述至少两个数据包组中的一个；
    处理单元，用于根据用于指示所述第一数据包组的生成时间的信息和所述第一数据包 组的下行传输时间窗信息，确定所述第一数据包组的剩余传输时间；以及，用于根据所述第一数据包组的剩余传输时间，通过所述收发单元向终端设备发送所述第一数据包组的数据包。
  23. 如权利要求22所述的装置，其特征在于，
    所述处理单元，还用于从接收到的所述至少一个数据包中获取所述第一数据包组的数量信息；根据所述第一数据包组的数量信息和所述第一数据包组的剩余传输时间，确定所述第一数据包组对应的调制编码方案；
    所述处理单元，用于根据所述第一数据包组的剩余传输时间，向所述第一终端设备发送所述第一数据包组的数据包，具体包括：
    用于根据所述第一数据包组对应的调制编码方案和所述第一数据包组的剩余传输时间，通过所述收发单元向所述第一终端设备发送所述第一数据包组的数据包。
  24. 如权利要求23所述的装置，其特征在于，所述处理单元，用于根据所述第一数据包组的数量信息和所述第一数据包组的剩余传输时间，确定所述第一数据包组对应的调制编码方案，具体包括：
    用于根据所述第一数据包组的数量信息和所述第一数据包组的剩余传输时间，确定所述第一数据包组中的在先收到的第一部分数据包对应的第一调制编码方案和所述第一数据包组中的在后收到的第二部分数据包对应的第二调制编码方案；其中，所述第一调制编码方案的等级低于所述第二调制编码方案的等级；
    所述处理单元，用于根据所述第一数据包组对应的调制编码方案和所述第一数据包组的剩余传输时间，通过所述收发单元向终端设备发送所述第一数据包组的数据包，包括：
    用于根据所述第一调制编码方案和所述第一数据包组的剩余传输时间，通过所述收发单元向所述终端设备发送所述第一数据包组的第一部分数据包；
    用于根据所述第二调制编码方案和所述第一数据包组的剩余传输时间，通过所述收发单元向所述终端设备发送所述第一数据包组的第二部分数据包。
  25. 如权利要求22所述的装置，其特征在于，所述收发单元，还用于从接收到的至少一个数据包中获取用于指示第二数据包组的生成时间的信息和所述第二数据包组的下行传输时间窗信息，所述至少一个数据包为第二业务数据流的所述第二数据包组的数据包；
    所述处理单元，还用于根据用于指示所述第二数据包组的生成时间的信息和第二数据包组的下行传输时间窗信息，确定所述第二数据包组的剩余传输时间；根据所述第一数据包组的剩余传输时间和所述第二数据包组的剩余传输时间，确定所述第一数据包组的调度优先级；
    所述处理单元，用于根据所述第一数据包组的剩余传输时间，通过所述收发单元向终端设备发送所述第一数据包组的数据包，具体包括：
    用于根据所述第一数据包组的调度优先级和所述第一数据包组的剩余传输时间，通过所述收发单元向所述终端设备发送所述第一数据包组的数据包。
  26. 如权利要求22至25中任一项所述的装置，其特征在于，所述收发单元，还用于接收指示信息，所述指示信息用于指示对所述第一业务数据流进行数据包组粒度的传输控制。
  27. 一种通信系统，其特征在于，包括用于执行如权利要求1至8中任一项所述方法的网络设备，和用于执行如权利要求9至13中任一项所述方法的接入网设备。
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EP4280768A4 (en) 2024-02-28
US20230370897A1 (en) 2023-11-16
CN116830731A (zh) 2023-09-29

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