WO2024012140A1 - 一种数据传输方法及装置 - Google Patents

一种数据传输方法及装置 Download PDF

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Publication number
WO2024012140A1
WO2024012140A1 PCT/CN2023/100286 CN2023100286W WO2024012140A1 WO 2024012140 A1 WO2024012140 A1 WO 2024012140A1 CN 2023100286 W CN2023100286 W CN 2023100286W WO 2024012140 A1 WO2024012140 A1 WO 2024012140A1
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Prior art keywords
data
bsr
terminal
time unit
time interval
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PCT/CN2023/100286
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English (en)
French (fr)
Inventor
徐瑞
陈二凯
秦熠
曹佑龙
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华为技术有限公司
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Publication of WO2024012140A1 publication Critical patent/WO2024012140A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present application relates to the field of communication technology, and in particular, to a data transmission method and device.
  • extended reality (XR) technology In wireless communication networks, extended reality (XR) technology has the advantages of multi-viewing and strong interactivity. It can provide users with a new visual experience and has great application value and commercial potential.
  • XR includes technologies such as virtual reality (VR), augmented reality (AR), and mixed reality (MR), which can be widely used in entertainment, games, medical care, advertising, industry, online education, and engineering and many other fields.
  • VR virtual reality
  • AR augmented reality
  • MR mixed reality
  • XR data has high requirements on transmission delay. Therefore, how to efficiently utilize limited wireless resources to reduce the transmission delay of XR data is an urgent problem that needs to be solved.
  • embodiments of the present application provide a data transmission method, which can be executed by a terminal, or by components of the terminal (such as a processor, a chip, or a chip system, etc.), or by a method that can implement all or part of Logic module or software implementation of terminal functions.
  • the method includes: sending a buffer state report (BSR) to the network device, the BSR indicating the amount of data N1+N2, where N1 represents the current amount of data in the terminal cache, and N2 represents the estimate of the terminal within the time interval T1 Data volume, N1 ⁇ 0, N2 ⁇ 0, T1>0; receiving scheduling information from the network device; and sending data to the network device according to the scheduling information, the data including the data corresponding to the above-mentioned current data volume and/or the above-mentioned estimate Data corresponding to the amount of data.
  • BSR buffer state report
  • the terminal can estimate and report the estimated data volume in the future to the network device, so that the network device can schedule the transmission of uplink data in a more timely manner based on the estimated data volume, thereby reducing data transmission delay and improving the efficiency of end users. feeling experience.
  • the above T1 is predefined, or the above T1 is configured by a network device.
  • T1 is indicated through physical layer signaling, or T1 is configured through high-layer signaling.
  • the physical layer signaling in this application may be, for example, downlink control information (DCI) carried on a physical downlink control channel (physical downlink control channel, PDCCH).
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • the high-level signaling in this application may be, for example, a media access control (MAC) control element (CE) or a radio resource control (RRC) signaling.
  • T1 is configured through physical layer signaling and high-layer signaling.
  • the network device can configure the required time interval T1 according to the load condition. For example, in the light load state, you can configure a longer time interval T1 to schedule the terminal's uplink data in a more timely manner; in the heavy load state, you can configure a shorter time interval T1 to avoid resource waste and try to be as timely as possible. to schedule the terminal’s uplink data.
  • the network device can configure the required time interval T1 according to the quality of service (QoS) requirements of the current business flow.
  • QoS quality of service
  • the packet delay budget (PDB) of the current business flow QoS requirement is small, you can configure a longer time interval T1 to schedule the uplink data of the terminal in a timely manner; if the current business flow QoS requirement of PDB is large, Then a shorter time interval T1 can be configured to avoid waste of wireless transmission resources.
  • PDB packet delay budget
  • the above-mentioned T1 is the time interval between the time unit in which the above-mentioned BSR is sent and the next uplink time unit that meets the condition.
  • T1 can also satisfy certain predefined rules.
  • a downlink time unit is included between the next uplink time unit that satisfies the condition and the time unit for sending the BSR, wherein the time interval between the downlink time unit and the next uplink time unit that satisfies the condition is greater than or equal to the scheduled uplink time unit.
  • Minimum time interval for sending data may be one or more radio frames, one or more subframes, one or more time slots, or one or more time domain symbols.
  • the uplink time unit is a time unit used to carry uplink signals or uplink information
  • the downlink time unit is a time unit used to carry downlink signals or downlink information.
  • the downlink time unit included between the next uplink time unit that meets the conditions and the time unit for sending BSR can be understood as a time unit that can be used to send scheduling information.
  • the next uplink time unit that meets the conditions It can be understood as the next time unit that meets the conditions for sending uplink data.
  • the minimum time interval for scheduling uplink data transmission can be understood as the shortest time interval that needs to exist between the terminal receiving the scheduling information and sending the uplink data scheduled by the scheduling information. After receiving the information scheduled to send uplink data, the terminal needs a certain preparation time to perform packet grouping and other operations before sending uplink data. Therefore, uplink data can be sent only after at least the minimum time interval has elapsed.
  • T1 when T1 is configured by a network device, the configured T1 can also satisfy the above predefined rules.
  • the uplink data of the terminal can be scheduled in a more timely manner without wasting time and frequency resources, thereby reducing the data transmission delay and improving the end user experience.
  • the method further includes: determining the above estimated data amount according to the period of the data, the packet size of the data and the previous arrival time of the data, or, according to the period of the data and The last arrival time of the data determines the estimated data volume above.
  • the estimated amount of data N2 can be greater than 0 (that is, there will be new data in the time interval T1), or it can be equal to 0 (that is, there will be no new data in the time interval T1).
  • the terminal can estimate the estimated data amount N2 based on the relevant parameters of the service data. It can be understood that the relevant parameters of the business data include but are not limited to the above ones.
  • the data amount N2 in the time interval T1 can be estimated more accurately, and the uplink data of the terminal can be scheduled in a timely manner to reduce the data transmission delay and reduce the transmission caused by inaccurate estimation. Waste of resources and additional transmission delays.
  • the relevant parameters of the above service data can be obtained in a variety of different ways.
  • the relevant parameters of the service data can be obtained through the configuration information of the QoS flow corresponding to the data, such as QoS rules.
  • relevant parameters of service data can be obtained by detecting data packets in the QoS flow.
  • the service characteristic information of the application layer data can be notified to the protocol layers below the application layer of the terminal (such as the RRC layer, MAC layer), so that the protocols below the application layer of the terminal can The layer can obtain relevant parameters of business data.
  • the above-mentioned BSR is carried by a first MAC protocol data unit (PDU), and the first MAC PDU also includes a logical channel identifier, where the logical channel identifier is To identify the BSR.
  • PDU first MAC protocol data unit
  • This BSR can be understood as a newly defined BSR format.
  • the above-mentioned BSR is carried by a second MAC PDU, and the second MAC PDU also includes a reserved field, where the reserved field is used to identify the BSR.
  • This BSR can be understood as the original BSR format. Through this implementation, there is no need to introduce a new BSR format or additional indication overhead.
  • sending the above-mentioned BSR to the network device includes: periodically sending the above-mentioned BSR to the network device.
  • the amount of uplink data to be transmitted can be reported in time, and the uplink data can be scheduled in time, thereby reducing the data transmission delay.
  • sending the above BSR to the network device includes: when there is remaining data that has not been transmitted completely in the buffer of the terminal, or it is estimated that a data packet will arrive within the time interval T1 When, the above BSR is sent to the network device.
  • the amount of uplink data to be transmitted can be reported in time, and the uplink data can be scheduled in time, thereby reducing the data transmission delay.
  • embodiments of the present application provide a data transmission method.
  • the method can be executed by a network device, or by a component of the network device (such as a processor, a chip, or a chip system, etc.), or by a device that can realize all Or the logic module or software implementation of some network device functions.
  • the method includes: receiving a BSR from the terminal, the BSR indicating the data amount N1+N2, where N1 represents the current data amount in the terminal cache, N2 represents the estimated data amount of the terminal within the time interval T1, N1 ⁇ 0, N2 ⁇ 0, T1>0; Send scheduling information to the terminal, and the scheduling information schedules the sending of data.
  • the data includes data corresponding to the current data amount and/or data corresponding to the estimated data amount.
  • the above T1 is predefined, or the above T1 is configured by a network device.
  • the above-mentioned T1 is the time interval between the time unit for receiving the above-mentioned BSR and the next uplink time unit that meets the condition.
  • a downlink time unit is included between the next uplink time unit that meets the conditions and the time unit for receiving the above-mentioned BSR, and the time interval between the downlink time unit and the above-mentioned uplink time unit is greater than or equal to the minimum time interval for scheduling uplink data transmission.
  • the above-mentioned BSR is carried by a first MAC PDU, and the first MAC PDU also includes a logical channel identifier, where the logical channel identifier is used to identify the BSR.
  • the above-mentioned BSR is carried by a second MAC PDU, and the second MAC PDU also includes a reserved field, where the reserved field is used to identify the BSR.
  • receiving the BSR from the terminal includes: periodically receiving the BSR from the terminal.
  • sending scheduling information to the terminal includes: sending the scheduling information to the terminal according to the above BSR.
  • the radio access network device learns that the terminal has N1+N2 data volume to be sent by receiving the aforementioned BSR, it can allocate resources capable of carrying N1+N2 data volume to the terminal, and include the resource allocation information of the resource in the scheduler. message is sent to the terminal. After receiving the resource allocation information, the terminal can use the resource to send data corresponding to the data amount N1+N2.
  • the network device can allocate sufficient space to the terminal in advance to carry the remaining data of the terminal and the estimated data in the future based on the BSR reported by the terminal. resources, thereby preventing the terminal from occupying limited wireless resources and sending BSR again, reducing data transmission delay and improving the end user experience.
  • embodiments of the present application provide a device that can implement the method in the above first aspect or any possible implementation of the first aspect.
  • the device includes corresponding units or modules for performing the above method.
  • the units or modules included in the device can be implemented by software and/or hardware.
  • the device may be, for example, a terminal, or may be a chip, chip system, or processor that supports the terminal to implement the above method, or may be a logic module or software that can realize all or part of the terminal functions.
  • embodiments of the present application provide a device that can implement the method in the above second aspect or any possible implementation of the second aspect.
  • the device includes corresponding units or modules for performing the above method.
  • the units or modules included in the device can be implemented by software and/or hardware.
  • the device may be, for example, a network device, a chip, a chip system, a processor, etc. that supports the network device to implement the above method, or a logic module or software that can realize all or part of the network device functions.
  • embodiments of the present application provide a device, including: a processor, the processor is coupled to a memory, and the memory is used to store instructions.
  • the device implements the above first aspect, or The method in any possible implementation of the first aspect.
  • embodiments of the present application provide a device, including: a processor, the processor is coupled to a memory, the memory is used to store instructions, and when the instructions are executed by the processor, the device implements the above second aspect, or The method in any possible implementation of the second aspect.
  • embodiments of the present application provide a computer-readable storage medium on which instructions are stored. When the instructions are executed, they cause the computer to perform the method in the above-mentioned first aspect or any possible implementation of the first aspect.
  • embodiments of the present application provide a computer-readable storage medium on which instructions are stored. When executed, the instructions cause the computer to perform the method in the above-mentioned second aspect or any possible implementation of the second aspect.
  • embodiments of the present application provide a computer program product, which includes computer program code.
  • the computer program code When the computer program code is run on a computer, it causes the computer to execute the above-mentioned first aspect or any possible implementation of the first aspect. Methods.
  • embodiments of the present application provide a computer program product, which includes computer program code.
  • the computer program code When the computer program code is run on a computer, it causes the computer to execute the above-mentioned second aspect, or any possible implementation manner of the second aspect. Methods.
  • embodiments of the present application provide a chip, including: a processor, the processor is coupled to a memory, and the memory is used to store instructions.
  • the chip implements the above first aspect, The second aspect, any possible implementation of the first aspect, or the method in any possible implementation of the second aspect.
  • embodiments of the present application provide a communication system, including: the device of the third aspect and the device of the fourth aspect.
  • embodiments of the present application provide a communication system, including: the device of the fifth aspect and the device of the sixth aspect.
  • Figure 1 is a schematic diagram of a communication system applied in the embodiment provided by this application.
  • FIGS. 2 to 5 show schematic diagrams of several system frameworks applicable to the embodiments of this application.
  • Figure 6 shows a schematic diagram of a data transmission method in an embodiment of the present application
  • FIGS 7 and 8 are schematic diagrams of T1 in the embodiment of the present application.
  • Figure 9 is a schematic diagram of data transmission in the embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • Figure 11 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • Figure 12 is a schematic diagram of another device provided by an embodiment of the present application.
  • Figure 1 is a schematic architectural diagram of a communication system applied in an embodiment of the present application.
  • the communication system includes a wireless access network 100 and a core network 130.
  • the communication system 1000 may also include the Internet 140.
  • the radio access network 100 may include at least one radio access network device (110a and 110b in Figure 1), and may also include at least one terminal (120a-120j in Figure 1).
  • the terminal is connected to the wireless access network equipment through wireless means, and the wireless access network equipment is connected to the core network through wireless or wired means.
  • the core network equipment and the wireless access network equipment can be independent and different devices, or the functions of the core network equipment and the logical functions of the wireless access network equipment can be integrated on the same device, or they can be integrated on one device.
  • Terminals and terminals and wireless access network equipment and wireless access network equipment can be connected to each other in a wired or wireless manner.
  • Figure 1 is only a schematic diagram.
  • the communication system may also include other network equipment, such as relay equipment and backhaul equipment, which are not shown in Figure 1 .
  • the methods and devices provided by the embodiments of the present application can be used in various communication systems, such as fourth generation (4G) communication systems, 4.5G communication systems, 5G communication systems, 5.5G communication systems, 6G communication systems, and various communication systems.
  • 4G fourth generation
  • 4.5G communication systems 5G communication systems
  • 5.5G communication systems 6G communication systems
  • System integration systems or future evolving communication systems.
  • LTE long term evolution
  • NR new radio
  • WiFi wireless-fidelity
  • 3GPP 3rd generation partnership project
  • Wireless access network equipment can be a base station (base station), an evolved base station (evolved NodeB, eNodeB), a transmission reception point (transmission reception point, TRP), or a 5G mobile communication system
  • base station an evolved base station
  • eNodeB evolved base station
  • TRP transmission reception point
  • 5G mobile communication system The next generation base station (next generation NodeB, gNB), the next generation base station in the 6G mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; it can also be a module that completes some functions of the base station or
  • a unit for example, can be a centralized unit (CU) or a distributed unit (DU).
  • the wireless access network equipment may be a macro base station (110a in Figure 1), a micro base station or an indoor station (110b in Figure 1), or a relay node or donor node. It can be understood that all or part of the functions of the radio access network equipment in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform). The embodiments of this application do not limit the specific technology and specific equipment form used by the wireless access network equipment. For the convenience of description, the following description takes the base station as a radio access network device as an example.
  • the terminal may also be called terminal equipment, user equipment (UE), mobile station, mobile terminal, etc.
  • Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things ( internet of things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, intelligence Furniture, smart offices, smart wearables, smart transportation, smart cities, etc.
  • Terminals can be mobile phones, tablets, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technology and specific equipment form used by the terminal.
  • the terminal in this application may also be a VR terminal, AR terminal, or MR terminal.
  • VR terminals, AR terminals, and MR terminals can all be called XR terminals.
  • the XR terminal can be, for example, a head-mounted device (such as a helmet or glasses), an all-in-one machine, a TV, a monitor, a car, a vehicle-mounted device, a tablet or a smart screen, etc.
  • XR terminals can present XR data to users, and users can experience diverse XR services by wearing or using XR terminals.
  • XR terminals can access the network through wireless or wired methods, such as WiFi, 5G or other systems.
  • Base stations and terminals can be fixed-location or mobile. Base stations and terminals can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air. The embodiments of this application do not limit the application scenarios of base stations and terminals.
  • the aircraft or drone 120i in Figure 1 may be configured as a mobile base station.
  • the terminal 120i is Base station; but for base station 110a, 120i is a terminal, that is, communication between 110a and 120i is through a wireless air interface protocol.
  • communication between 110a and 120i can also be carried out through an interface protocol between base stations.
  • relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively called communication devices.
  • 110a and 110b in Figure 1 can be called communication devices with base station functions
  • 120a-120j in Figure 1 can be called communication devices with terminal functions.
  • Communication between base stations and terminals, between base stations and base stations, and between terminals can be carried out through licensed spectrum, or through unlicensed spectrum, or through licensed spectrum and unlicensed spectrum at the same time; it can communicate through 6,000 It can communicate using spectrum below gigahertz (GHz), it can also communicate through spectrum above 6GHz, and it can also communicate using spectrum below 6GHz and spectrum above 6GHz at the same time.
  • GHz gigahertz
  • the embodiments of the present application do not limit the spectrum resources used for wireless communication.
  • the functions of the base station may also be performed by modules (such as chips) in the base station, or may be performed by a control subsystem that includes the base station functions.
  • the control subsystem here including the base station function can be the control center in the application scenarios of the above-mentioned terminals such as smart grid, industrial control, smart transportation, smart city, etc.
  • the functions of the terminal can also be performed by modules in the terminal (such as chips or modems), or by a device containing the terminal functions.
  • the base station sends downlink signals or downlink information to the terminal, and the downlink information is carried on the downlink channel;
  • the terminal sends uplink signals or uplink information to the base station, and the uplink information is carried on the uplink channel;
  • the terminal sends a sidelink to the terminal ) signal or side link information, and side link information is carried on the side link channel.
  • the information may be control information or data information.
  • XR technology has the advantages of multi-viewing and strong interactivity. It can provide users with a new experience and has great application value and commercial potential.
  • XR includes VR, AR, MR and other technologies, and can be widely used in many fields such as entertainment, games, medical care, advertising, industry, online education, and engineering.
  • VR technology mainly refers to the rendering of visual and audio scenes to simulate as much as possible the visual and audio stimulation of the user in the real world.
  • users usually wear XR terminals (such as head-mounted devices) to simulate to the user Vision and/or hearing.
  • VR technology can also track the user's movements to update the visual and/or auditory content of the simulation in a timely manner.
  • AR technology mainly refers to providing visual and/or auditory additional information or artificially generated content in the real environment perceived by the user, where the user's acquisition of the real environment can be direct (for example, without sensing, processing, and rendering), Can also be indirect (e.g. via sensors etc.) and perform further enhancement processing.
  • MR technology inserts some virtual elements into the physical scene with the purpose of providing users with an immersive experience in which these elements are part of the real scene.
  • Figures 2 to 5 show schematic diagrams of several system frameworks applicable to the embodiments of this application.
  • Figure 2 shows a schematic diagram of a scenario applicable to the embodiment of the present application.
  • Figure 2 illustrates a system 200, including a server 210, a core network and an access network 220 (which may be referred to as a transmission network 220, such as an LTE, 5G or 6G network), and a terminal 230.
  • the server 210 can be used to encode, decode and render XR source data
  • the transmission network 220 can be used to transmit XR data
  • the terminal 230 can provide users with diversified XR experiences by processing XR data.
  • terminal 230 may also be included between the transmission network 220 and the terminal 230, for example, other terminals (such as mobile phones, laptop computers, or vehicle-mounted terminals, etc.) and/or network equipment (such as relay equipment, integrated devices, etc.) may also be included.
  • network equipment such as relay equipment, integrated devices, etc.
  • IAB Integrated access backhaul
  • WiFi router or WiFi access point, etc.
  • the terminal 230 obtains XR data from the transmission network 220 with the help of other terminals and/or network equipment.
  • Figure 3 shows another schematic diagram of a scenario applicable to the embodiment of the present application.
  • Figure 3 illustrates a system 300 including terminal 320 and other terminals 310.
  • the other terminal 310 is a terminal other than the terminal 320.
  • Other terminals 310 can transmit XR data to terminal 320.
  • other terminals 310 can project XR data to the terminal 320.
  • the other terminal 310 and the terminal 320 are vehicle-mounted terminals, and XR data can be exchanged between the vehicle-mounted terminals.
  • other terminals 310 can also be connected to the transmission network (such as LTE, 5G or 6G network) to obtain XR data from the transmission network, or to send data to the transmission network.
  • the transmission network such as LTE, 5G or 6G network
  • Figure 4 shows another schematic diagram of a scenario applicable to the embodiment of the present application.
  • Figure 4 illustrates a system 400, including a terminal 430, a WiFi router or WiFi access point 420 (which may be referred to as a WiFi device 420), and other terminals 410.
  • the other terminal 410 is a terminal other than the terminal 430.
  • Other terminals 410 can transmit XR data to the terminal 430 via the WiFi device 420.
  • the other terminal 410 is a mobile phone device
  • the WiFi device 420 is a WiFi router, WiFi access point or set-top box
  • the terminal 430 is a television device, a smart screen device or an electronic tablet device
  • the mobile device can be connected through a WiFi router, WiFi access point or set-top box. Project XR data to TV devices, smart screen devices or electronic tablet devices to present to users.
  • Figure 5 shows another schematic diagram of a scenario applicable to the embodiment of the present application.
  • Figure 5 illustrates a system 500, including a server 510, a fixed network 520, a WiFi router or WiFi access point 530 (which may be referred to as a WiFi device 530), and a terminal 540.
  • the server 510 can be used to encode, decode and render the XR source data, and transmit the XR data to the terminal 540 via the fixed network 520 and the WiFi device 530.
  • the fixed network 520 is an operator's network
  • the WiFi device 530 is a WiFi router, a WiFi access point or a set-top box
  • the server 510 uses the operator's network 520 and the WiFi device 530 to transmit or project XR data to the terminal 540.
  • Figures 2 to 5 only illustrate several scenarios in which the embodiments of the present application are applicable, and do not limit the applicable scenarios of the embodiments of the present application.
  • the terminal Before sending uplink data, the terminal generally sends a buffer state report (buffer state report, BSR) to the wireless access network device to report the current amount of data in the terminal buffer to the wireless access network device.
  • BSR buffer state report
  • the wireless access network device can allocate uplink data transmission resources to the terminal according to the current data volume reported by the terminal, and the terminal can send uplink data to the wireless access network device on the allocated resources.
  • XR data has high requirements on transmission delay. If the transmission of XR data (such as data of a picture frame) is not completed within a certain delay budget, it will cause a sharp decline in the end-user experience. Arrival of XR data The allocation of transmission resources may not match exactly. For example, after the terminal reports the BSR and before the radio access network device issues authorization information for allocating uplink data transmission resources to the terminal, the terminal has XR data arriving, then the transmission resources allocated to the terminal at this time will not be able to match the additional arriving data. XR data makes the transmission unable to be completed in time, resulting in an increase in the transmission delay of XR data. Therefore, how to efficiently utilize limited wireless resources to reduce the transmission delay of XR data is an urgent problem to be solved.
  • This application provides a data transmission method that can estimate and report the estimated data volume within a certain period of time through the terminal, so that the wireless access network equipment can schedule the uplink data of the terminal in a more timely manner, thereby reducing the data transmission delay. Improve end-user experience. It can be understood that the method provided by this application does not limit the data service types to which it is applied, and data service types other than XR and or video service data are also applicable.
  • FIG. 6 is an interactive schematic diagram of a data transmission method 600 provided by an embodiment of the present application.
  • the radio access network device and the terminal are used as the execution subjects of the interaction gesture as an example to illustrate the method, but this application does not limit the execution subjects of the interaction gesture.
  • the radio access network device in Figure 6 can also be a chip, chip system, or processor that supports the radio access network device to implement the method, or can be logic that can realize all or part of the functions of the radio access network device.
  • Module or software; the terminal in Figure 6 can also be a chip, chip system, or processor that supports the terminal to implement the method, or it can be a logic module or software that can realize all or part of the terminal functions.
  • the method 600 of this embodiment may include a 610 part, a 620 part and a 630 part.
  • the terminal sends the BSR to the wireless access network device, and accordingly, the wireless access network device receives the BSR.
  • the BSR indicates the data amount N1+N2, where N1 represents the current data amount in the terminal's cache, N2 represents the estimated data amount of the terminal within the time interval T1, N1 ⁇ 0, N2 ⁇ 0, T1>0. It can be understood that the current data amount N1 may be the data amount corresponding to the complete data packet, or it may be the remaining data amount corresponding to after a part of the complete data packet is transmitted, which is not limited in this application.
  • the wireless access network device sends scheduling information to the terminal.
  • the scheduling information schedules the sending of data.
  • the scheduled data includes one or more of the following data: data corresponding to the aforementioned current data volume, data corresponding to the aforementioned estimated data volume.
  • the scheduling information includes resource allocation information, which is used to indicate to the terminal the resources carrying data.
  • the terminal receives scheduling information from the radio access network device.
  • Part 630 The terminal sends data to the wireless access network device according to the aforementioned scheduling information.
  • the data includes one or more of the following: data corresponding to the aforementioned current data amount, and data corresponding to the aforementioned estimated data amount.
  • the radio access network device receives data from the terminal.
  • the terminal can estimate and report the estimated data volume in the future period to the network device, so that the network device can schedule the transmission of uplink data in a more timely manner based on the estimated data volume, thereby reducing the data transmission delay and improving the efficiency of end users. feeling experience.
  • the time interval T1 for estimating the data volume is predefined or configured by the radio access network device.
  • T1 is configured for the terminal by the wireless access network device
  • the radio access network device may indicate the time interval T1 to the terminal through physical layer signaling, or may configure the time interval T1 for the terminal through high-layer signaling.
  • the physical layer signaling in this application may be, for example, downlink control information (DCI) carried on a physical downlink control channel (physical downlink control channel, PDCCH).
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • the high-level signaling in this application may be, for example, a media access control (MAC) control element (CE) or a radio resource control (RRC) signaling.
  • MAC media access control
  • CE control element
  • RRC radio resource control
  • the radio access network device can configure the time interval T1 for the terminal through physical layer signaling and high-layer signaling.
  • one or more candidate T1s can be configured through high-layer signaling (such as MAC CE or RRC signaling), and then one of the candidate T1s can be indicated as the time interval T1 through physical layer signaling (such as DCI).
  • one or more candidate T1s can be configured through RRC signaling (a high-level signaling), and then one of the candidate T1s can be configured as the time interval T1 through MAC CE (another high-level signaling).
  • one or more candidate T1s can be configured through MAC CE (a high-level signaling), and then one of the candidate T1s can be configured as the time interval T1 through RRC signaling (another high-level signaling).
  • the wireless access network device can configure the required time interval T1 according to the load condition. For example, in the light load state, you can configure a longer time interval T1 to schedule the terminal's uplink data in a more timely manner; in the heavy load state, you can configure a shorter time interval T1 to avoid resource waste and try to be as timely as possible. to schedule the terminal’s uplink data.
  • the wireless access network device can configure the required time interval T1 according to the quality of service (QoS) requirements of the current service flow.
  • QoS quality of service
  • the packet delay budget (PDB) of the current business flow QoS requirement is small, you can configure a longer time interval T1 to schedule the uplink data of the terminal in a timely manner; if the current business flow QoS requirement of PDB is large, Then a shorter time interval T1 can be configured to avoid waste of wireless transmission resources.
  • PDB packet delay budget
  • the above-mentioned T1 is the time interval between the time unit in which the above-mentioned BSR is sent in part 610 and the next uplink time unit that meets the condition. There is a downlink time unit between the next uplink time unit that meets the conditions and the time unit for sending the BSR, where the time interval between the downlink time unit and the next uplink time unit that meets the conditions is greater than or equal to the minimum time for scheduling uplink data transmission. time interval.
  • the time unit in this application may be one or more radio frames, one or more subframes, one or more time slots, or one or more time domain symbols.
  • the uplink time unit is a time unit used to carry uplink signals or uplink information
  • the downlink time unit is a time unit used to carry downlink signals or downlink information.
  • the downlink time unit included between the next uplink time unit that meets the conditions and the time unit for sending BSR can be understood as a time unit that can be used to send scheduling information.
  • the next uplink time unit that meets the conditions It can be understood as the next time unit that meets the conditions for sending uplink data.
  • the minimum time interval for scheduling uplink data transmission can be understood as the shortest time interval that needs to exist between the terminal receiving the scheduling information and sending the uplink data scheduled by the scheduling information. After receiving the information scheduled to send uplink data, the terminal needs a certain preparation time to perform packet grouping and other operations before sending uplink data. Therefore, uplink data can be sent only after at least the minimum time interval has elapsed.
  • FIG 7 it illustrates the distribution of uplink and downlink time units, where D represents the downlink time unit, U represents the uplink time unit, and the number in front of D/U is used to indicate the number of the time unit. For example, “0:D" indicates downlink time unit 0, and “2:U” indicates uplink time unit 2.
  • T1 is the time interval between the time unit for sending BSR and the next uplink time unit that meets the conditions.
  • the next uplink time unit that meets the conditions and the time unit for sending BSR includes the downlink time. unit, wherein the time interval between this downlink time unit and the aforementioned next uplink time unit that meets the conditions is greater than or equal to K2min.
  • the time unit when sending BSR is uplink time unit 2, then the next uplink time unit is uplink time unit 3, but there is no downlink time unit between uplink time unit 2 and uplink time unit 3, so uplink time unit 3 is not the next one that meets the conditions upstream time unit.
  • Next uplink time unit is the uplink time unit 7.
  • Downlink time units 4-6 are included between the uplink time unit 2 and the uplink time unit 7.
  • the time interval between the downlink time unit 4 and the uplink time unit 7 is 3 time units (that is, greater than K2min).
  • the time unit when sending BSR is uplink time unit 2, then the next uplink time unit is uplink time unit 3, but there is no downlink time unit between uplink time unit 2 and uplink time unit 3, so uplink time unit 3 is not the next one that meets the conditions upstream time unit.
  • the next uplink time unit is uplink time unit 7.
  • Downlink time units 4-6 are included between uplink time unit 2 and uplink time unit 7.
  • the time unit when sending BSR is uplink time unit 2, then the next uplink time unit is uplink time unit 3, but there is no downlink time unit between uplink time unit 2 and uplink time unit 3, so uplink time unit 3 is not the next one that meets the conditions upstream time unit.
  • the next uplink time unit is uplink time unit 7.
  • Downlink time units 4-6 are included between uplink time unit 2 and uplink time unit 7, but the time intervals between downlink time unit 4-6 and uplink time unit 7 are 3 and 7 respectively. 2 and 1 time units are both less than K2min, so uplink time unit 7 is not the next uplink time unit that meets the conditions.
  • the next uplink time unit is uplink time unit 8.
  • Downlink time units 4-6 are included between uplink time unit 2 and uplink time unit 8.
  • T1 when T1 is configured by the wireless access network device, the configured T1 can also satisfy the above predefined rules.
  • the uplink data of the terminal can be scheduled in a more timely manner without wasting time and frequency resources, thereby reducing the data transmission delay and improving the end user experience.
  • time unit is used as the measurement granularity to describe T1, but this application does not limit the measurement granularity of T1.
  • time units (such as microseconds, milliseconds, seconds) can also be used as the measurement granularity to describe T1.
  • the actual amount of data to be transmitted by the terminal in the uplink time unit 12 is N1, or it can be understood that N1 represents the current amount of data in the buffer of the terminal in the uplink time unit 12.
  • the terminal estimates the estimated data volume N2 of the terminal in the time interval T1 between the time unit (uplink time unit 12) for sending the BSR and the next uplink time unit (uplink time unit 17) that meets the conditions.
  • the wireless access network device can advance the uplink time unit for the terminal based on the reported data amount N1+N2.
  • Resources for transmitting data corresponding to the data amount N1 and/or data corresponding to the data amount N2 are allocated on 17 . In this way, when new data with a data amount of N2 appears in the terminal during the T1 period (for example, in the downlink time unit 15), the terminal no longer needs to send a BSR indicating the data amount N2 to the radio access network device, but can do so in the uplink time unit. 17
  • the above-mentioned resources allocated by the wireless access network device are directly used to send data corresponding to the data amount N1 and/or data corresponding to the data amount N2, thereby reducing the data transmission delay and improving the end user's experience.
  • the method further includes: the terminal determines the above-mentioned estimated data amount based on the period of the data, the packet size of the data and the previous arrival time of the data, or the terminal determines the above-mentioned estimated data amount based on the period of the data and the data's previous arrival time.
  • the estimated data volume above is determined by the last arrival time of .
  • the terminal can estimate the estimated data amount N2 based on the relevant parameters of the service data.
  • XR or video service data usually has a certain periodicity, which can be understood as the period of the data here. It can be understood that the relevant parameters of the business data include but are not limited to the above ones.
  • the last arrival time of the data is the downlink time unit 0
  • the data cycle is 15 time units
  • the data packet size is 500 bytes
  • T1 is 5 time units.
  • the terminal can respond based on the period of the data (15 time units), the packet size of the data (500 bytes), and the previous arrival time of the data (downlink time unit 0).
  • the estimated data volume N2 within the time interval T1 (5 time units) is estimated.
  • the terminal can estimate the uplink time unit 15 within the time interval T1 from the uplink time unit 12 to the uplink time unit 17 New packets will appear on the . Furthermore, since the packet size of data is 500 bytes, the terminal can estimate that the estimated data amount N2 within the above time interval T1 is 500 bytes.
  • the packet size of the data can also be a random number that satisfies a certain probability distribution (for example, satisfies the truncated Gaussian distribution). In this case, it can be based on one or more of the relevant statistics of the probability distribution (such as the mean, variance, minimum value, or maximum value). ) to estimate the estimated data volume N2.
  • the estimated amount of data N2 can be greater than 0 (that is, there will be new data in the time interval T1), or it can be equal to 0 (that is, there will be no new data in the time interval T1).
  • the last arrival time of the data is the downlink time unit 10
  • the data cycle is 15 time units
  • T1 is 5 time units.
  • the terminal can adjust the time interval T1 (5 times) according to the period of the data (15 time units) and the previous arrival time of the data (downlink time unit 10).
  • the estimated data volume N2 within the unit) is estimated.
  • the data volume N2 in the time interval T1 can be more accurately estimated, and the uplink data of the terminal can be scheduled in a timely manner to reduce the data transmission delay and reduce the transmission caused by inaccurate estimation. Waste of resources and additional transmission delays.
  • the terminal can obtain the relevant parameters of the above service data in a variety of different ways.
  • the terminal can obtain relevant parameters of the service data through the configuration information of the QoS flow corresponding to the data, such as QoS rules.
  • the terminal can obtain relevant parameters of the service data by detecting data packets in the QoS flow.
  • the terminal can notify the protocol layers below the application layer of the terminal (such as RRC layer, MAC layer) of the service characteristic information of the application layer data through interaction between protocol layers, so that the protocol layers below the application layer of the terminal can Obtain relevant parameters of business data.
  • the BSR sent by the terminal can be implemented in many different ways.
  • the BSR is carried by a first MAC protocol data unit (PDU).
  • the first MAC PDU also includes a logical channel identifier, where the logical channel identifier is used to identify the BSR.
  • This BSR can be understood as a newly defined BSR format, for example, it can be defined as latency-critical BSR format. However, it can be understood that this application does not limit the specific name of the BSR format.
  • the definition of buffer size in the BSR format can be the total amount of data expected to arrive before the specified next transmission opportunity or time.
  • the priority of this BSR may be the same as other types of BSR (such as regular BSR and periodic BSR), and is higher than the priority of a MAC service data unit (SDU) that transmits data.
  • SDU MAC service data unit
  • the logical channel identifier used to identify the above-mentioned BSR may be a logical channel identifier (logical channel ID, LCID) included in the MAC subheader, and the MAC subheader is included in the first MAC PDU.
  • logical channel ID logical channel ID
  • the reserved code value (codepoint)/index (index) corresponding to the LCID can be used to identify the BSR.
  • the originally reserved code value/index 44 is used to represent the newly defined BSR format.
  • the logical channel identifier used to identify the above-mentioned BSR may also be an extended logical channel identifier (extended LCID, eLCID) included in the MAC subheader, and the MAC subheader is included in the first MAC PDU.
  • extended LCID extended logical channel identifier
  • the reserved code value (codepoint)/index (index) corresponding to the eLCID can be used to identify the BSR.
  • the originally reserved code value 249/index 313 is used to represent the newly defined BSR format.
  • the BSR is carried by a second MAC PDU, and the second MAC PDU also includes a reserved field, where the reserved field is used to identify the BSR.
  • This BSR can be understood as the original BSR format.
  • the reserved field used to identify the above-mentioned BSR may be the R field contained in the MAC subheader, and the MAC subheader is contained in the second MAC PDU.
  • the wireless access network device parses the value of R in the second MAC PDU, it can know whether the BSR reports the data amount N1 or the data amount N1+N2.
  • triggering the terminal to send BSR can be implemented in many different ways.
  • the terminal may periodically send the BSR to the radio access network device.
  • the periodically transmitted BSR may not be affected by regular BSR transmission.
  • the radio access network device can configure a period for sending the BSR to the terminal, and the terminal sends the BSR to the radio access network device according to the period.
  • the period for sending the BSR may be related to the distribution of uplink and downlink time units and the subcarrier spacing.
  • the cycle of sending the BSR may also be related to the cycle of service data, which is not limited in this application.
  • the terminal sends the BSR to the radio access network device. For example, when there is remaining data corresponding to a part of a complete data packet transmitted in the buffer of the terminal, the terminal sends the above-mentioned BSR to the radio access network device. For another example, when data corresponding to a newly arrived complete data packet exists in the buffer of the terminal, the terminal sends the above-mentioned BSR to the radio access network device.
  • the amount of uplink data to be transmitted can be reported in time, and the uplink data can be scheduled in time, thereby reducing the data transmission delay.
  • the terminal can also send a scheduling request (scheduling request, SR) to the wireless access network device.
  • SR scheduling request
  • the radio access network device receives the SR, allocates resources for carrying the aforementioned BSR to the terminal based on the SR, and sends information indicating the resources to the terminal. After receiving the information indicating the resource, the terminal may send the BSR in part 610 on the indicated resource.
  • the radio access network device may send the above scheduling information to the terminal based on the BSR received in part 610. For example, if the radio access network device learns that the terminal has N1+N2 data volume to be sent by receiving the aforementioned BSR, it can allocate resources capable of carrying N1+N2 data volume to the terminal, and include the resource allocation information of the resource in the scheduler. message is sent to the terminal. After receiving the resource allocation information, the terminal This resource can be used in part 630 to send data corresponding to the data amount N1+N2.
  • the network device can allocate resources to the terminal in advance based on the BSR reported by the terminal, which are sufficient to carry the terminal's remaining data and estimated data in the future. This can prevent the terminal from occupying limited wireless resources and send BSR again, reducing the data transmission time. extension, improving the end-user experience.
  • embodiments of the present application also provide corresponding devices, including corresponding modules for executing the above embodiments.
  • the module may be software, hardware, or a combination of software and hardware.
  • FIG. 10 provides a schematic structural diagram of a terminal.
  • the terminal can be applied to the scenarios shown in Figure 1, Figure 2, Figure 3, Figure 4 or Figure 5.
  • the terminal or components in the terminal may perform the aforementioned method 600 and various possible implementations.
  • FIG. 10 shows only the main components of the terminal.
  • terminal 1000 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control the entire terminal, execute software programs, and process data of software programs.
  • Memory is mainly used to store software programs and data.
  • Radio frequency circuits are mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit processes the baseband signal to obtain the radio frequency signal and sends the radio frequency signal out in the form of electromagnetic waves through the antenna. .
  • the radio frequency circuit receives the radio frequency signal through the antenna.
  • the radio frequency signal is further converted into a baseband signal and the baseband signal is output to the processor.
  • the processor converts the baseband signal into data and processes the data. .
  • Figure 10 shows only one memory and processor. In a real terminal, there can be multiple processors and memories.
  • the memory may also be called a storage medium or a storage device, which is not limited in the embodiments of the present application.
  • the processor may include a baseband processor and a central processor.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processor is mainly used to control and execute the entire terminal device.
  • the software program processes the data of the software program.
  • the processor in Figure 10 integrates the functions of a baseband processor and a central processor.
  • the baseband processor and the central processor can also be independent processors and are interconnected through technologies such as buses.
  • a terminal may include multiple baseband processors to adapt to different network standards, the terminal may include multiple central processors to enhance its processing capabilities, and various components of the terminal may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing communication protocols and communication data can be built into the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • the antenna and the control circuit with the transceiver function can be regarded as the transceiver unit 1011 of the terminal 1000
  • the processor with the processing function can be regarded as the processing unit 1012 of the terminal 1000
  • terminal 1000 includes a transceiver unit 1011 and a processing unit 1012.
  • the transceiver unit may also be called a transceiver, a transceiver, a transceiver device, etc.
  • the devices used to implement the receiving function in the transceiver unit 1011 can be regarded as receiving units
  • the devices used in the transceiver unit 1011 used to implement the transmitting function can be regarded as transmitting units.
  • the transceiver unit 1011 includes a receiving unit and a transmitting unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, a transmitting circuit, etc.
  • the above receiving unit and sending unit may be integrated into one unit, It can also be multiple independent units.
  • the above-mentioned receiving unit and sending unit may be located in one geographical location, or may be dispersed in multiple geographical locations.
  • the device may be a terminal or a component of the terminal (eg, integrated circuit, chip, etc.).
  • the device may be a wireless access network device, a component of a network device (for example, an integrated circuit, a chip, etc.), or a logic module or software that can realize all or part of the functions of the wireless access network device.
  • the device can also be other communication modules.
  • the device 1100 can implement the function of the radio access network device in the method 600, or the device 1100 can implement the function of the terminal in the method 600.
  • the device 1100 may include: an interface module 1101 (or called an interface unit) and a processing module 1102 (or called a processing unit), and may also include a storage module 1103 (or called a storage unit).
  • one or more modules as shown in Figure 11 may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors and a transceiver; or may be implemented by one or more processors, memories, and transceivers, which are not limited in the embodiments of the present application.
  • the processor, memory, and transceiver can be set separately or integrated.
  • the device has the functions of implementing the terminal described in the embodiments of this application.
  • the device includes modules or units or means (means) corresponding to the terminal executing the terminal-related steps described in the embodiments of this application.
  • the functions or units or Means can be implemented by software, or by hardware, or by hardware executing corresponding software implementation, or by a combination of software and hardware.
  • the device has the function of implementing the radio access network equipment described in the embodiments of this application.
  • the device includes a module corresponding to the radio access network equipment performing the steps involved in the radio access network equipment described in the embodiments of this application.
  • the functions or units or means can be implemented by software, or implemented by hardware, or can be implemented by hardware executing corresponding software, or can also be implemented by a combination of software and hardware.
  • the functions or units or means can be implemented by software, or implemented by hardware, or can be implemented by hardware executing corresponding software, or can also be implemented by a combination of software and hardware.
  • the device 1100 includes: a processing module 1102 and an interface module 1101.
  • the device 1100 may be, for example, a terminal, a component of the terminal (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can realize all or part of the terminal functions.
  • the interface module 1101 is used to send a BSR to the network device.
  • the BSR indicates the data amount N1+N2, where N1 represents the current data amount in the terminal cache, N2 represents the estimated data amount of the terminal within the time interval T1, N1 ⁇ 0, N2 ⁇ 0, T1>0.
  • the interface module 1101 is also used to receive scheduling information from network devices.
  • the processing module 1102 is configured to control the device 1100 to send data to the network device according to the scheduling information, where the data includes data corresponding to the current data amount and/or data corresponding to the estimated data amount.
  • the above T1 is predefined, or the above T1 is configured by a network device.
  • T1 is configured for the terminal by the network device
  • T1 is indicated through physical layer signaling, or T1 is configured through high-layer signaling.
  • T1 is configured through physical layer signaling and high-layer signaling.
  • the network device can configure the required time interval T1 according to the load condition. For example, in a light load state, a longer time interval T1 can be configured; in a heavy load state, a shorter time interval T1 can be configured.
  • the network device can configure the required time interval T1 according to the QoS requirements of the current service flow. For example, if the PDB required for QoS of the current business flow is small, a longer time interval T1 can be configured; if the PDB required for QoS of the current business flow is large, a shorter time interval T1 can be configured.
  • the above T1 is the time unit between sending the above BSR and the next full The time interval between qualified upstream time units.
  • a downlink time unit is included between the next uplink time unit that satisfies the condition and the time unit for sending the BSR, wherein the time interval between the downlink time unit and the next uplink time unit that satisfies the condition is greater than or equal to the scheduled uplink time unit.
  • Minimum time interval for sending data is included.
  • the processing module 1102 is also configured to: determine the above-mentioned estimated data amount based on the period of the data, the packet size of the data, and the previous arrival time of the data, or, based on the period of the data and the packet size of the data. The last arrival time determines the estimated data volume above.
  • the above-mentioned BSR is carried by a first MAC protocol data unit (PDU), and the first MAC PDU also includes a logical channel identifier, where the logical channel identifier is used to identify the BSR.
  • PDU first MAC protocol data unit
  • the above-mentioned BSR is carried by a second MAC PDU, and the second MAC PDU also includes a reserved field, where the reserved field is used to identify the BSR.
  • the interface module 1101 is configured to send a BSR to a network device, including: the interface module 1101 is configured to periodically send a BSR to the network device.
  • the interface module 1101 is used to send a BSR to the network device, including: when there is remaining data that has not been transmitted completely in the buffer of the terminal, or when a data packet is expected to arrive within the time interval T1 , the interface module 1101 is used to send the above-mentioned BSR to the network device.
  • the device 1100 includes an interface module 1101 .
  • the interface module 1101 is used to receive a BSR from the terminal.
  • the BSR indicates the data volume N1+N2, where N1 represents the current data volume in the terminal cache, N2 represents the estimated data volume of the terminal within the time interval T1, N1 ⁇ 0, N2 ⁇ 0, T1>0.
  • the interface module 1101 is also configured to send scheduling information to the terminal, where the scheduling information schedules the sending of data, where the data includes data corresponding to the current data amount and/or data corresponding to the estimated data amount.
  • the above T1 is predefined, or the above T1 is configured by a network device.
  • the above-mentioned T1 is the time interval between the time unit for receiving the above-mentioned BSR and the next uplink time unit that meets the condition.
  • a downlink time unit is included between the next uplink time unit that meets the conditions and the time unit for receiving the above-mentioned BSR, and the time interval between the downlink time unit and the above-mentioned uplink time unit is greater than or equal to the minimum time interval for scheduling uplink data transmission.
  • the above-mentioned BSR is carried by the first MAC PDU, and the first MAC PDU also includes a logical channel identifier, where the logical channel identifier is used to identify the BSR.
  • the above-mentioned BSR is carried by a second MAC PDU, and the second MAC PDU also includes a reserved field, where the reserved field is used to identify the BSR.
  • the interface module 1101 is configured to receive the BSR from the terminal, including: the interface module 1101 is configured to periodically receive the BSR from the terminal.
  • the device 1100 further includes a processing module 1102.
  • the processing module 1102 is used to control the device 1100 to send the above scheduling information to the terminal according to the above BSR.
  • the above-mentioned device 1100 may also include a storage module 1103 for storing data or instructions (which may also be called codes or programs).
  • the above-mentioned other modules may interact or be coupled with the storage module to implement corresponding methods or functions.
  • the processing module 1102 can read the data or instructions in the storage module 1103, so that the device 1100 Implement the methods in the above embodiments.
  • the modules in the above device 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 A microprocessor (digital signal processor, DSP), or one or more field programmable gate arrays (FPGA), or a combination of at least two of these integrated circuit forms.
  • ASICs application specific integrated circuits
  • DSP digital signal processor
  • FPGA field programmable gate arrays
  • the module in the device can be implemented in the form of a processing element scheduler
  • the processing element can be a general processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call programs.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • the device includes: a processor 1210 and an interface 1230.
  • the processor 1210 is coupled with the interface 1230.
  • Interface 1230 is used to communicate with other modules or devices.
  • the interface 1230 may be a transceiver or an input-output interface.
  • the interface 1230 may be, for example, an interface circuit.
  • the device further includes a memory 1220 for storing instructions executed by the processor 1210 or input data required for the processor 1210 to run the instructions or data generated after the processor 1210 executes the instructions.
  • the above method 600 and various possible implementations can be implemented by the processor 1210 calling a program or instructions stored in the memory 1220 .
  • the memory 1220 may be inside the device or outside the device, which is not limited in this application.
  • the functions/implementation processes of the interface module 1101 and the processing module 1102 in Figure 11 can be implemented by the processor 1210 in the device shown in Figure 12 .
  • the function/implementation process of the processing module 1102 in Figure 11 can be implemented by the processor 1210 in the device shown in Figure 12, and the function/implementation process of the interface module 1101 in Figure 11 can be implemented by the processor 1210 in the device shown in Figure 12.
  • the interface 1230 in the device is implemented.
  • the function/implementation process of the interface module 1101 can be implemented by the processor calling program instructions in the memory to drive the interface 1230.
  • the chip of the terminal implements the functions of the terminal in the above method embodiment.
  • the chip receives information from other modules in the terminal (such as radio frequency modules or antennas), which information comes from other terminals or wireless access network equipment; or, the chip sends information to other modules in the terminal (such as radio frequency modules or antennas) Information, which is sent by the terminal to other terminals or wireless access network equipment.
  • the chip When the above device is a chip applied to wireless access network equipment, the chip implements the functions of the wireless access network equipment in the above method embodiment.
  • the chip receives information from other modules (such as radio frequency modules or antennas) in the wireless access network equipment, and the information comes from other wireless access network equipment or terminals; or, the chip sends information to other modules in the wireless access network equipment. (such as a radio frequency module or antenna) sends information, which is sent by the wireless access network device to other wireless access network devices or terminals.
  • modules such as radio frequency modules or antennas
  • At least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or Multiple. "Multiple" means two or more, and other quantifiers are similar.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media (eg, solid state disk (SSD)), etc.
  • the steps of the method described in the embodiments of this application can 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 (RAM), flash memory, read-only memory (ROM), registers, hard disks, removable disks, or any other form of storage media in the field.
  • the storage medium can be connected to the processor, so that the processor can read information from the storage medium and can store and write information to the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and storage medium can be housed in an ASIC.
  • This application also provides a computer-readable medium on which a computer program is stored.
  • the computer program is executed by a computer, the functions of any of the above method embodiments are implemented.
  • This application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

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Abstract

一种数据传输方法及装置，可以通过终端预估并上报一定时段内的预估数据量，使得无线接入网设备可以更加及时的调度终端的上行数据，从而降低数据传输时延，提升终端用户的感受体验。

Description

一种数据传输方法及装置
相关申请的交叉引用
本申请要求在2022年07月12日提交中华人民共和国知识产权局、申请号为202210817105.0、申请名称为“一种数据传输方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种数据传输的方法及装置。
背景技术
在无线通信网络中，扩展现实(extended reality，XR)技术具有多视角、交互性强等优点，能够为用户提供了一种全新的视觉体验，具有极大的应用价值和商业潜力。XR包含虚拟现实(virtual reality，VR)、增强现实(augmented reality，AR)、和混合现实(mix reality，MR)等技术，能够广泛应用于娱乐、游戏、医疗、广告、工业、在线教育、以及工程等诸多领域。
XR数据对传输的时延有较高的要求，因此如何能够高效利用有限的无线资源降低XR数据的传输时延是一个亟待解决的问题。
发明内容
第一方面，本申请实施例提供一种数据传输方法，该方法可以由终端执行，也可以由终端的部件(例如处理器、芯片、或芯片系统等)执行，还可以由能实现全部或部分终端功能的逻辑模块或软件实现。该方法包括：向网络设备发送缓存状态报告(buffer state report，BSR)，该BSR指示数据量N1+N2，其中N1表示终端缓存中的当前数据量，N2表示在时间间隔T1内终端的预估数据量，N1≥0,N2≥0，T1>0；接收来自网络设备的调度信息；以及根据该调度信息向网络设备发送数据，该数据包括上述当前数据量对应的数据和/或上述预估数据量对应的数据。通过该方法，终端可以估计并向网络设备上报未来一段时间内的预估数据量，使得网络设备能够基于预估数据量更加及时的调度上行数据的传输，从而降低数据传输时延，提升终端用户的感受体验。
结合第一方面，在第一方面的某些实施方式中，上述T1是预定义的，或者，上述T1是由网络设备配置的。
在T1是由网络设备为终端配置的情况下，可以有多种不同的配置方法。例如，T1是通过物理层信令指示的，或者，T1是通过高层信令配置的。可以理解，本申请中的物理层信令例如可以是承载于物理下行控制信道(physical downlink control channel，PDCCH)的下行控制信息(downlink control information，DCI)。本申请中的高层信令例如可以是媒体接入控制(media access control，MAC)控制元素(control element，CE)，也可以是无线资源控制(radio resource control，RRC)信令。又例如，T1是通过物理层信令和高层信令配置的。
在由网络设备为终端配置T1的情况下，网络设备可以根据负载情况配置需要的时间间隔T1。例如，在轻载状态下，可以配置较长的时间间隔T1，以更加及时地调度终端的上行数据；在重载状态下，可以配置较短的时间间隔T1，避免资源浪费的同时，尽量及时地调度终端的上行数据。或者，网络设备可以根据当前业务流的服务质量(quality of service，QoS)需求配置需要的时间间隔T1。例如，当前业务流QoS需求的包时延预算(packet delay budget，PDB)较小，则可以配置较长的时间间隔T1以及时调度终端的上行数据；若当前业务流QoS需求的PDB较大，则可以配置较短的时间间隔T1以避免无线传输资源浪费。
结合第一方面，在第一方面的某些实施方式中，上述T1为发送上述BSR的时间单元与下一个满足条件的上行时间单元之间的时间间隔。这可以理解为T1也可以是满足一定预定义规则的。可选地，前述下一个满足条件的上行时间单元与发送BSR的时间单元之间包含下行时间单元，其中，该下行时间单元与前述下一个满足条件的上行时间单元的时间间隔大于或等于调度上行数据发送的最小时间间隔。本申请中的时间单元可以是一个或多个无线帧、一个或多个子帧、一个或多个时隙、或者一个或多个时域符号。上行时间单元是用于承载上行信号或上行信息的时间单元，下行时间单元是用于承载下行信号或下行信息的时间单元。
上述T1的预定义规则中，下一个满足条件的上行时间单元与发送BSR的时间单元之间包含的下行时间单元可以理解为能够用于发送调度信息的时间单元，下一个满足条件的上行时间单元可以理解为下一个满足条件的用于发送上行数据的时间单元。调度上行数据发送的最小时间间隔，可以理解为终端接收到调度信息到发送由该调度信息调度的上行数据之间需要存在的最短时间间隔。终端在接收到调度上行数据发送的信息后，需要一定的准备时间进行上行数据发送前的组包等操作，因此需要至少经过该最小时间间隔后才可以进行上行数据发送。
可以理解，在T1由网络设备配置的情况下，配置出来的T1也是可以满足上述预定义规则的。
通过上述T1的预定义规则，可以在不浪费时频资源的前提下，更加及时地调度终端的上行数据从而降低数据传输时延，提升终端用户的感受体验。
结合第一方面，在第一方面的某些实施方式中，方法还包括：根据数据的周期、数据的包大小以及数据的前次到达时间确定上述预估数据量，或者，根据数据的周期以及数据的前次到达时间确定上述预估数据量。可以理解，估计出来的预估数据量N2可以是大于0的(即时间间隔T1内预估会有新数据)，也可以是等于0的(即时间间隔T1内预估不会有新数据)。这说明终端可以依据业务数据的相关参数进行预估数据量N2的估计。可以理解，业务数据的相关参数包括但不限于上述的几种。通过该方式对预估数据量N2进行估计，可以更加准确地预估时间间隔T1内的数据量N2，及时地调度终端的上行数据从而降低数据传输时延，降低因估计不准确而导致的传输资源浪费和额外的传输时延。
结合第一方面，在第一方面的某些实施方式中，可以通过多种不同的方式获得上述业务数据的相关参数。例如，可以通过与数据对应的QoS流的配置信息，比如QoS规则(QoS rule)，获得业务数据的相关参数。又例如，可以通过检测QoS流中数据包来获得业务数据的相关参数。又例如，可以通过协议层间的交互，将应用层数据的业务特征信息通知给终端的应用层以下的协议层(例如RRC层、MAC层)，从而使得终端的应用层以下的协议 层能够获得业务数据的相关参数。
结合第一方面，在第一方面的某些实施方式中，上述BSR由第一MAC协议数据单元(protocol data unit，PDU)承载，第一MAC PDU还包括逻辑信道标识，其中该逻辑信道标识用于识别该BSR。这种BSR可以理解为一种新定义的BSR格式。通过该实施方式，可以减少对已有MAC CE的影响，从而简化实现。
结合第一方面，在第一方面的某些实施方式中，上述BSR由第二MAC PDU承载，第二MAC PDU还包括预留域，其中该预留域用于识别该BSR。这种BSR可以理解为原有的BSR格式。通过该实施方式，可以无需引入新的BSR格式，也无需引入额外的指示开销。
结合第一方面，在第一方面的某些实施方式中，向网络设备发送上述BSR，包括：周期性的向网络设备发送上述BSR。通过该实施方式，可以及时上报待传输的上行数据量，上行数据可以被及时调度，从而降低数据传输时延。
结合第一方面，在第一方面的某些实施方式中，向网络设备发送上述BSR，包括：当终端的缓存中存在未传输完成的剩余数据，或预估在时间间隔T1内有数据包到达时，向网络设备发送上述BSR。通过该实施方式，可以及时上报待传输的上行数据量，上行数据可以被及时调度，从而降低数据传输时延。
第二方面，本申请实施例提供一种数据传输方法，该方法可以由网络设备执行，也可以由网络设备的部件(例如处理器、芯片、或芯片系统等)执行，还可以由能实现全部或部分网络设备功能的逻辑模块或软件实现。该方法包括：接收来自终端的BSR，该BSR指示数据量N1+N2，其中N1表示终端缓存中的当前数据量，N2表示在时间间隔T1内终端的预估数据量，N1≥0,N2≥0，T1>0；向终端发送调度信息，该调度信息调度数据的发送，该数据包括上述当前数据量对应的数据和/或上述预估数据量对应的数据。
结合第二方面，在第二方面的某些实施方式中，上述T1是预定义的，或者，上述T1是由网络设备配置的。
结合第二方面，在第二方面的某些实施方式中，上述T1为接收上述BSR的时间单元与下一个满足条件的上行时间单元之间的时间间隔。可选地，下一个满足条件的上行时间单元与接收上述BSR的时间单元之间包含下行时间单元，该下行时间单元与上述上行时间单元的时间间隔大于或等于调度上行数据发送的最小时间间隔。
结合第二方面，在第二方面的某些实施方式中，上述BSR由第一MAC PDU承载，第一MAC PDU还包括逻辑信道标识，其中该逻辑信道标识用于识别该BSR。
结合第二方面，在第二方面的某些实施方式中，上述BSR由第二MAC PDU承载，第二MAC PDU还包括预留域，其中该预留域用于识别该BSR。
结合第二方面，在第二方面的某些实施方式中，接收来自终端的BSR，包括：周期性的接收来自终端的BSR。
结合第二方面，在第二方面的某些实施方式中，向终端发送调度信息，包括：根据上述BSR向终端发送该调度信息。例如，无线接入网设备通过接收前述BSR获知终端有N1+N2数据量的数据待发送，则可以为终端分配能够承载数据量N1+N2的资源，并将该资源的资源分配信息包含在调度信息中发送给终端。终端在接收到该资源分配信息后，便可以在使用该资源进行数据量N1+N2对应数据的发送。通过上述方式，网络设备可以根据终端上报的BSR提前为终端分配足够承载终端剩余数据和未来一段时间内预估数据的 资源，从而能够避免终端占用有限的无线资源再次发送BSR，降低了数据传输时延，提升了终端用户的体验。
第三方面，本申请实施例提供一种装置，可以实现上述第一方面、或第一方面任一种可能的实施方式中的方法。该装置包括用于执行上述方法的相应的单元或模块。该装置包括的单元或模块可以通过软件和/或硬件方式实现。该装置例如可以为终端，也可以为支持终端实现上述方法的芯片、芯片系统、或处理器等，还可以为能实现全部或部分终端功能的逻辑模块或软件。
第四方面，本申请实施例提供一种装置，可以实现上述第二方面、或第二方面任一种可能的实施方式中的方法。该装置包括用于执行上述方法的相应的单元或模块。该装置包括的单元或模块可以通过软件和/或硬件方式实现。该装置例如可以为网络设备，也可以为支持网络设备实现上述方法的芯片、芯片系统、或处理器等，还可以为能实现全部或部分网络设备功能的逻辑模块或软件。
第五方面，本申请实施例提供一种装置，包括：处理器，该处理器与存储器耦合，该存储器用于存储指令，当指令被处理器执行时，使得该装置实现上述第一方面、或第一方面任一种可能的实施方式中的方法。
第六方面，本申请实施例提供一种装置，包括：处理器，该处理器与存储器耦合，该存储器用于存储指令，当指令被处理器执行时，使得该装置实现上述第二方面、或第二方面任一种可能的实施方式中的方法。
第七方面，本申请实施例提供一种计算机可读存储介质，其上存储有指令，指令被执行时使得计算机执行上述第一方面、或第一方面任一种可能的实施方式中的方法。
第八方面，本申请实施例提供一种计算机可读存储介质，其上存储有指令，指令被执行时使得计算机执行上述第二方面、或第二方面任一种可能的实施方式中的方法。
第九方面，本申请实施例提供一种计算机程序产品，其包括计算机程序代码，计算机程序代码在计算机上运行时，使得计算机执行上述第一方面、或第一方面任一种可能的实施方式中的方法。
第十方面，本申请实施例提供一种计算机程序产品，其包括计算机程序代码，计算机程序代码在计算机上运行时，使得计算机执行上述第二方面、或第二方面任一种可能的实施方式中的方法。
第十一方面，本申请实施例提供一种芯片，包括：处理器，该处理器与存储器耦合，该存储器用于存储指令，当指令被处理器执行时，使得该芯片实现上述第一方面、第二方面、第一方面任一种可能的实施方式、或第二方面任一种可能的实施方式中的方法。
第十二方面，本申请实施例提供一种通信系统，包括：上述第三方面的装置和上述第四方面的装置。
第十三方面，本申请实施例提供一种通信系统，包括：上述第五方面的装置和上述第六方面的装置。
可以理解，第二方面至第十三方面中与第一方面对应特征的有益效果，请参见第一方面中的有关描述，不重复赘述。
附图说明
图1为本申请提供的实施例应用的通信系统的示意图；
图2-图5示出了本申请实施例适用的几种系统框架示意图；
图6示出了本申请实施例中的一种数据传输方法示意图；
图7和图8为本申请实施例中T1的示意图；
图9为本申请实施例中数据传输的示意图；
图10为本申请实施例提供的一种终端的结构示意图；
图11为本申请实施例提供的一种装置的结构示意图；
图12为本申请实施例提供的另一种装置的示意图。
具体实施方式
图1是本申请的实施例应用的通信系统的架构示意图。如图1所示，该通信系统包括无线接入网100和核心网130，可选的，通信系统1000还可以包括互联网140。其中，无线接入网100可以包括至少一个无线接入网设备(如图1中的110a和110b)，还可以包括至少一个终端(如图1中的120a-120j)。终端通过无线的方式与无线接入网设备相连，无线接入网设备通过无线或有线方式与核心网连接。核心网设备与无线接入网设备可以是独立的不同的设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个设备上，还可以是一个设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端和终端之间以及无线接入网设备和无线接入网设备之间可以通过有线或无线的方式相互连接。图1只是示意图，该通信系统中还可以包括其它网络设备，如还可以包括中继设备和回传设备，在图1中未画出。
本申请实施例提供的方法及装置可用于各种通信系统，例如第四代(4th generation，4G)通信系统，4.5G通信系统，5G通信系统，5.5G通信系统，6G通信系统，多种通信系统融合的系统，或者未来演进的通信系统。例如长期演进(long term evolution，LTE)系统，新空口(new radio,NR)系统，无线保真(wireless-fidelity，WiFi)系统，以及第三代合作伙伴计划(3rd generation partnership project，3GPP)相关的通信系统等，以及其他此类通信系统。
无线接入网设备(本申请中有时也被称为网络设备)可以是基站(base station)、演进型基站(evolved NodeB，eNodeB)、发送接收点(transmission reception point，TRP)、5G移动通信系统中的下一代基站(next generation NodeB，gNB)、6G移动通信系统中的下一代基站、未来移动通信系统中的基站或WiFi系统中的接入节点等；也可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)，也可以是分布式单元(distributed unit，DU)。无线接入网设备可以是宏基站(如图1中的110a)，也可以是微基站或室内站(如图1中的110b)，还可以是中继节点或施主节点等。可以理解，本申请中的无线接入网设备的全部或部分功能也可以通过在硬件上运行的软件功能来实现，或者通过平台(例如云平台)上实例化的虚拟化功能来实现。本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。为了便于描述，下文以基站作为无线接入网设备为例进行描述。
终端也可以称为终端设备、用户设备(user equipment，UE)、移动台、移动终端等。终端可以广泛应用于各种场景，例如，设备到设备(device-to-device，D2D)、车物(vehicle to everything，V2X)通信、机器类通信(machine-type communication，MTC)、物联网(internet of things，IoT)、虚拟现实、增强现实、工业控制、自动驾驶、远程医疗、智能电网、智能 家具、智能办公、智能穿戴、智能交通、智慧城市等。终端可以是手机、平板电脑、带无线收发功能的电脑、可穿戴设备、车辆、无人机、直升机、飞机、轮船、机器人、机械臂、智能家居设备等。本申请的实施例对终端所采用的具体技术和具体设备形态不做限定。
本申请中的终端还可以是VR终端、AR终端、或MR终端。VR终端、AR终端、和MR终端都可称为XR终端。XR终端例如可以是头戴式设备(例如头盔或眼镜)，也可以是一体机，还可以是电视、显示器、汽车、车载设备、平板或智慧屏等。XR终端能够将XR数据呈现给用户，用户通过佩戴或使用XR终端能够体验多样化的XR业务。XR终端可以通过无线或有线的方式接入网络，例如通过WiFi、5G或其他系统接入网络。
基站和终端可以是固定位置的，也可以是可移动的。基站和终端可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对基站和终端的应用场景不做限定。
基站和终端的角色可以是相对的，例如，图1中的飞机或无人机120i可以被配置成移动基站，对于那些通过120i接入到无线接入网100的终端120j来说，终端120i是基站；但对于基站110a来说，120i是终端，即110a与120i之间是通过无线空口协议进行通信的。当然，110a与120i之间也可以是通过基站与基站之间的接口协议进行通信的，此时，相对于110a来说，120i也是基站。因此，基站和终端都可以统一称为通信装置，图1中的110a和110b可以称为具有基站功能的通信装置，图1中的120a-120j可以称为具有终端功能的通信装置。
基站和终端之间、基站和基站之间、终端和终端之间可以通过授权频谱进行通信，也可以通过免授权频谱进行通信，也可以同时通过授权频谱和免授权频谱进行通信；可以通过6千兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对无线通信所使用的频谱资源不做限定。
在本申请的实施例中，基站的功能也可以由基站中的模块(如芯片)来执行，也可以由包含有基站功能的控制子系统来执行。这里的包含有基站功能的控制子系统可以是智能电网、工业控制、智能交通、智慧城市等上述终端的应用场景中的控制中心。终端的功能也可以由终端中的模块(如芯片或调制解调器)来执行，也可以由包含有终端功能的装置来执行。
在本申请中，基站向终端发送下行信号或下行信息，下行信息承载在下行信道上；终端向基站发送上行信号或上行信息，上行信息承载在上行信道上；终端向终端发送边链路(sidelink)信号或边链路信息，边链路信息承载在边链路信道上。其中，信息可以是控制信息，也可以是数据信息。
XR技术具有多视角、交互性强等优点，能够为用户提供一种全新的体验，具有极大的应用价值和商业潜力。XR包含VR、AR和MR等技术，能够广泛应用于娱乐、游戏、医疗、广告、工业、在线教育、以及工程等诸多领域。VR技术主要是指对视觉和音频场景的渲染以尽可能地模拟现实世界中的视觉和音频对用户的感官刺激，VR技术中通常用户会佩戴XR终端(例如头戴式设备)进而向用户模拟视觉和/或听觉。VR技术还可以对用户进行动作跟踪，从而及时更新模拟的视觉和/或听觉内容。AR技术主要是指在用户感知的现实环境中提供视觉和/或听觉的附加信息或人工生成内容，其中，用户对现实环境的获取可以是直接的(例如不进行感测、处理和渲染)，也可以是间接的(例如通过传感器 等方式进行传递)，并进行进一步的增强处理。MR技术是将一些虚拟元素插入到物理场景中，目的是为用户提供一种这些元素是真实场景一部分的沉浸体验。
本申请提供的实施例适用于多种不同的场景。图2-图5示出了本申请实施例适用的几种系统框架示意图。
图2示出了一种本申请实施例适用的场景示意图。图2示意了一个系统200，包含服务器210、核心网和接入网220(可简称为传输网络220，例如LTE、5G或6G网络)、以及终端230。其中，服务器210可用于对XR的源数据进行编解码和渲染，传输网络220可用于对XR数据的传输，终端230通过对XR数据的处理为用户提供多样化的XR体验。可以理解，传输网络220与终端230之间还可以包含其他的装置，例如还可以包含其他的终端(例如手机、笔记本电脑、或车载终端等)和/或网络设备(例如中继设备、一体化接入回传(integrated access backhaul，IAB)设备、WiFi路由器、或WiFi接入点等)，终端230借助其他的终端和/或网络设备从传输网络220获得XR数据。
图3示出了另一种本申请实施例适用的场景示意图。图3示意了一个系统300，包含终端320和其他终端310。其他终端310是终端320之外的终端。其他终端310可以向终端320传输XR数据。例如，其他终端310可将XR数据投屏至终端320。又例如，其他终端310和终端320为车载终端，车载终端之间可进行XR数据的交互。可以理解，其他终端310还可以与传输网络(例如LTE、5G或6G网络)相连，以获得来自传输网络的XR数据，或者向传输网络发送数据。
图4示出了另一种本申请实施例适用的场景示意图。图4示意了一个系统400，包含终端430、WiFi路由器或WiFi接入点420(可简称为WiFi装置420)、和其他终端410。其他终端410是终端430以外的终端。其他终端410可借助WiFi装置420向终端430传输XR数据。例如，其他终端410是手机设备，WiFi装置420是WiFi路由器、WiFi接入点或机顶盒，终端430是电视设备、智慧屏设备或电子平板设备，手机设备可通过WiFi路由器、WiFi接入点或机顶盒将XR数据投屏至电视设备、智慧屏设备或电子平板设备上呈现给用户。
图5示出了另一种本申请实施例适用的场景示意图。图5示意了一个系统500，包含服务器510、固网520、WiFi路由器或WiFi接入点530(可简称为WiFi装置530)、和终端540。服务器510可用于对XR的源数据进行编解码和渲染，并借助固网520和WiFi装置530向终端540传输XR数据。例如，固网520为运营商网络，WiFi装置530是WiFi路由器、WiFi接入点或机顶盒，服务器510借助运营商网络520和WiFi装置530将XR数据传输或投屏到终端540。
可以理解，图2-图5仅给出了本申请实施例可以适用的几种场景示意，并没有对本申请实施例的适用场景产生限定。
下面结合附图对本申请的技术方案进行说明。
终端发送上行数据前，一般会向无线接入网设备发送缓存状态报告(buffer state report，BSR)，以向无线接入网设备上报终端缓存中的当前数据量。无线接入网设备可以根据终端上报的当前数据量为终端分配上行数据的传输资源，终端可以在分配的资源上向无线接入网设备发送上行数据。
XR数据对传输的时延有较高的要求，如果在一定的时延预算内没有完成XR数据(例如一幅画面帧的数据)的传输，则会造成终端用户感受体验的急剧下降。XR数据的到达 可能无法准确匹配传输资源的分配。比如，当终端上报BSR之后、无线接入网设备向终端下发分配上行数据传输资源的授权信息之前，该终端有XR数据到达，则此时为该终端分配的传输资源将无法匹配额外到达的XR数据，使得传输无法及时完成，从而导致XR数据的传输时延增大。因此如何能够高效利用有限的无线资源降低XR数据的传输时延是一个亟待解决的问题。
本申请中提供了一种数据传输方法，可以通过终端预估并上报一定时段内的预估数据量，使得无线接入网设备可以更加及时的调度终端的上行数据，从而降低数据传输时延，提升终端用户的感受体验。可以理解，本申请提供的方法并不限制其应用的数据业务类型，XR和或者视频业务数据之外的数据业务类型也同样适用。
图6为本申请实施例提供的一种数据传输方法600的交互示意图。图6中以无线接入网设备和终端作为该交互示意的执行主体为例来示意该方法，但本申请并不限制该交互示意的执行主体。例如，图6中的无线接入网设备也可以是支持该无线接入网设备实现该方法的芯片、芯片系统、或处理器，还可以是能实现全部或部分无线接入网设备功能的逻辑模块或软件；图6中的终端也可以是支持该终端实现该方法的芯片、芯片系统、或处理器，还可以是能实现全部或部分终端功能的逻辑模块或软件。如图6所示，该实施例的方法600可包括610部分、620部分和630部分。
610部分：终端向无线接入网设备发送BSR，相应地，无线接入网设备接收该BSR。该BSR指示数据量N1+N2，其中N1表示该终端缓存中的当前数据量，N2表示在时间间隔T1内该终端的预估数据量，N1≥0，N2≥0，T1>0。可以理解，当前数据量N1可以是完整数据包对应的数据量，也可以是完整数据包传输一部分之后对应的剩余数据量，本申请对此不做限定。
620部分：无线接入网设备向终端发送调度信息，该调度信息调度数据的发送，调度的数据包括以下一种或多种数据：前述当前数据量对应的数据、前述预估数据量对应的数据。该调度信息中包含资源分配信息，用于向终端指示承载数据的资源。相应地，终端接收来自无线接入网设备的调度信息。
630部分：终端根据前述调度信息向无线接入网设备发送数据，该数据包括以下一种或多种：前述当前数据量对应的数据、前述预估数据量对应的数据。相应地，无线接入网设备接收来自终端的数据。
通过上述方法，终端可以估计并向网络设备上报未来一段时间内的预估数据量，使得网络设备能够基于预估数据量更加及时的调度上行数据的传输，从而降低数据传输时延，提升终端用户的感受体验。
在方法600的一种可能的实施方式中，进行数据量预估的时间间隔T1是预定义的，或者是由无线接入网设备配置的。
在上述T1是由无线接入网设备为终端配置的情况下，可以有多种不同的配置方法。
在一种T1的配置方法中，无线接入网设备可以通过物理层信令向终端指示时间间隔T1，也可以通过高层信令为终端配置时间间隔T1。
可以理解，本申请中的物理层信令例如可以是承载于物理下行控制信道(physical downlink control channel，PDCCH)的下行控制信息(downlink control information，DCI)。本申请中的高层信令例如可以是媒体接入控制(media access control，MAC)控制元素(control element，CE)，也可以是无线资源控制(radio resource control，RRC)信令。
在另一种T1的配置方法中，无线接入网设备可以通过物理层信令和高层信令为终端配置时间间隔T1。例如，可以通过高层信令(比如MAC CE或RRC信令)配置一个或多个候选T1，再通过物理层信令(比如DCI)指示候选T1中的一个作为时间间隔T1。例如，可以通过RRC信令(一种高层信令)配置一个或多个候选T1，再通过MAC CE(另一种高层信令)配置候选T1中的一个作为时间间隔T1。例如，可以通过MAC CE(一种高层信令)配置一个或多个候选T1，再通过RRC信令(另一种高层信令)配置候选T1中的一个作为时间间隔T1。
在由无线接入网设备为终端配置T1的情况下，无线接入网设备可以根据负载情况配置需要的时间间隔T1。例如，在轻载状态下，可以配置较长的时间间隔T1，以更加及时地调度终端的上行数据；在重载状态下，可以配置较短的时间间隔T1，避免资源浪费的同时，尽量及时地调度终端的上行数据。或者，无线接入网设备可以根据当前业务流的服务质量(quality of service，QoS)需求配置需要的时间间隔T1。例如，当前业务流QoS需求的包时延预算(packet delay budget，PDB)较小，则可以配置较长的时间间隔T1以及时调度终端的上行数据；若当前业务流QoS需求的PDB较大，则可以配置较短的时间间隔T1以避免无线传输资源浪费。
上述T1也可以是满足一定预定义规则的。在一种可能的实施方式中，上述T1为610部分中发送上述BSR的时间单元与下一个满足条件的上行时间单元之间的时间间隔。前述下一个满足条件的上行时间单元与发送BSR的时间单元之间包含下行时间单元，其中，该下行时间单元与前述下一个满足条件的上行时间单元的时间间隔大于或等于调度上行数据发送的最小时间间隔。
本申请中的时间单元可以是一个或多个无线帧、一个或多个子帧、一个或多个时隙、或者一个或多个时域符号。上行时间单元是用于承载上行信号或上行信息的时间单元，下行时间单元是用于承载下行信号或下行信息的时间单元。
上述T1的预定义规则中，下一个满足条件的上行时间单元与发送BSR的时间单元之间包含的下行时间单元可以理解为能够用于发送调度信息的时间单元，下一个满足条件的上行时间单元可以理解为下一个满足条件的用于发送上行数据的时间单元。调度上行数据发送的最小时间间隔(可表示为K2min)，可以理解为终端接收到调度信息到发送由该调度信息调度的上行数据之间需要存在的最短时间间隔。终端在接收到调度上行数据发送的信息后，需要一定的准备时间进行上行数据发送前的组包等操作，因此需要至少经过该最小时间间隔后才可以进行上行数据发送。
以图7为例，示意了一种上下行时间单元的分布，其中D代表下行时间单元，U代表上行时间单元，D/U前面的数字用来表示时间单元的编号。例如“0：D”表示下行时间单元0，“2：U”表示上行时间单元2。图7中，以在上行时间单元2发送BSR、K2min＝2(2个时间单元)或3(3个时间单元)为例。上述T1的预定义规则是：T1是发送BSR的时间单元与下一个满足条件的上行时间单元之间的时间间隔，该下一个满足条件的上行时间单元与发送BSR的时间单元之间包含下行时间单元，其中，该下行时间单元与前述下一个满足条件的上行时间单元的时间间隔大于或等于K2min。
在图7中，以K2min＝2为例。发送BSR的时间单元是上行时间单元2，则下一个上行时间单元是上行时间单元3，但是上行时间单元2和上行时间单元3之间没有下行时间单元，因此上行时间单元3不是下一个满足条件的上行时间单元。再下一个上行时间单元 是上行时间单元7，上行时间单元2和上行时间单元7之间包含下行时间单元4-6，其中下行时间单元4与上行时间单元7的时间间隔是3个时间单元(即大于K2min)，下行时间单元5与上行时间单元7的时间间隔是2个时间单元(即等于于K2min)，因此上行时间单元7是下一个满足条件的上行时间单元，故T1为上行时间单元2与上行时间单元7之间的时间间隔，即T1＝5(5个时间单元)。
在图7中，以K2min＝3为例。发送BSR的时间单元是上行时间单元2，则下一个上行时间单元是上行时间单元3，但是上行时间单元2和上行时间单元3之间没有下行时间单元，因此上行时间单元3不是下一个满足条件的上行时间单元。再下一个上行时间单元是上行时间单元7，上行时间单元2和上行时间单元7之间包含下行时间单元4-6，其中下行时间单元4与上行时间单元7的时间间隔是3个时间单元(即等于K2min)，因此上行时间单元7是下一个满足条件的上行时间单元，故T1为上行时间单元2与上行时间单元7之间的时间间隔，即T1＝5(5个时间单元)。
以图8为例，与图7不同的是图8中的K2min满足K2min＝4(4个时间单元)。发送BSR的时间单元是上行时间单元2，则下一个上行时间单元是上行时间单元3，但是上行时间单元2和上行时间单元3之间没有下行时间单元，因此上行时间单元3不是下一个满足条件的上行时间单元。再下一个上行时间单元是上行时间单元7，上行时间单元2和上行时间单元7之间包含下行时间单元4-6，但是下行时间单元4-6与上行时间单元7的时间间隔分别是3、2和1个时间单元，均小于K2min，因此上行时间单元7也不是下一个满足条件的上行时间单元。再下一个上行时间单元是上行时间单元8，上行时间单元2和上行时间单元8之间包含下行时间单元4-6，其中下行时间单元4与上行时间单元8的时间间隔是4个时间单元(即等于K2min)，因此上行时间单元8是下一个满足条件的上行时间单元，故T1为上行时间单元2与上行时间单元8之间的时间间隔，即T1＝6(6个时间单元)。
可以理解，在T1由无线接入网设备配置的情况下，配置出来的T1也是可以满足上述预定义规则的。
通过上述T1的预定义规则，可以在不浪费时频资源的前提下，更加及时地调度终端的上行数据从而降低数据传输时延，提升终端用户的感受体验。
可以理解，以上举例中以时间单元作为度量粒度来描述T1，但本申请并不限制T1的度量粒度。例如，也可以用时间单位(比如微秒、毫秒、秒)作为度量粒度来描述T1。
下面结合图9，示例性地介绍方法600的实施过程。
图9示意了一种上下行时间单元的分布，并以T1＝5(5个时间单元)为例，其中终端在上行时间单元12向无线接入网设备发送指示数据量N1+N2的BSR。可以看出，终端在上行时间单元12实际的待传数据量是N1，或者可以理解为N1表示在上行时间单元12该终端缓存中的当前数据量。终端通过估计发送该BSR的时间单元(上行时间单元12)与下一个满足条件的上行时间单元(上行时间单元17)之间的时间间隔T1内该终端的预估数据量N2，在上行时间单元12将该预估数据量N2和当前数据量N1的总数据量一并上报给无线接入网设备，从而使得无线接入网设备可以根据上报的数据量N1+N2提前为终端在上行时间单元17上分配用于传输数据量N1对应的数据和/或数据量N2对应的数据的资源。这样，当T1时段内终端又出现数据量为N2的新数据时(例如在下行时间单元15)，终端无需再向无线接入网设备发送指示数据量N2的BSR，而是可以在上行时间单元17 直接使用无线接入网设备分配的上述资源发送数据量N1对应的数据和/或数据量N2对应的数据，从而降低了数据传输时延，提升了终端用户的感受体验。
在方法600的一种可能的实施方式中，该方法还包括：终端根据数据的周期、数据的包大小以及数据的前次到达时间确定上述预估数据量，或者，终端根据数据的周期以及数据的前次到达时间确定上述预估数据量。这说明终端可以依据业务数据的相关参数进行预估数据量N2的估计。例如，对于XR或者视频业务数据，其通常具有一定周期性，可以理解为此处数据的周期。可以理解，业务数据的相关参数包括但不限于上述的几种。
例如在图9中，以数据的前次到达时间为下行时间单元0，数据的周期为15个时间单元，数据的包大小为500bytes，T1为5个时间单元为例。终端在上行时间单元12发送指示数据量N1+N2的BSR之前，可以根据数据的周期(15个时间单元)、数据的包大小(500bytes)以及数据的前次到达时间(下行时间单元0)对时间间隔T1(5个时间单元)内的预估数据量N2进行估计。例如，由于数据的前次到达时间为下行时间单元0，并且数据的周期为15个时间单元，因此终端可以预估在上行时间单元12至上行时间单元17的时间间隔T1内的上行时间单元15上会出现新数据包。进一步地，由于数据的包大小为500bytes，因此终端可以预估在上述时间间隔T1内的预估数据量N2为500bytes。
可以理解，上述以数据的包大小为固定值为例介绍对预估数据量N2的估计，但本申请对此并不限定。数据的包大小也可以是满足一定概率分布的随机数(例如满足截断高斯分布)，此时可以根据概率分布的相关统计量(例如均值、方差、最小值或最大值中的一种或多种)进行预估数据量N2的估计。
可以理解，估计出来的预估数据量N2可以是大于0的(即时间间隔T1内预估会有新数据)，也可以是等于0的(即时间间隔T1内预估不会有新数据)。例如在图9中，以数据的前次到达时间为下行时间单元10，数据的周期为15个时间单元，T1为5个时间单元为例。终端在上行时间单元12发送指示数据量N1+N2的BSR之前，可以根据数据的周期(15个时间单元)、以及数据的前次到达时间(下行时间单元10)对时间间隔T1(5个时间单元)内的预估数据量N2进行估计。例如，由于数据的前次到达时间为下行时间单元10，并且数据的周期为15个时间单元，因此终端可以预估在上行时间单元12至上行时间单元17的时间间隔T1内的上行时间单元15上不会出现新数据包，由此得到N2＝0。
通过上述方式对预估数据量N2进行估计，可以更加准确地预估时间间隔T1内的数据量N2，及时地调度终端的上行数据从而降低数据传输时延，降低因估计不准确而导致的传输资源浪费和额外的传输时延。
终端可以通过多种不同的方式获得上述业务数据的相关参数。
例如，终端可以通过与数据对应的QoS流的配置信息，比如QoS规则(QoS rule)，获得业务数据的相关参数。又例如，终端可以通过检测QoS流中数据包来获得业务数据的相关参数。又例如，终端可以通过协议层间的交互，将应用层数据的业务特征信息通知给终端的应用层以下的协议层(例如RRC层、MAC层)，从而使得终端的应用层以下的协议层能够获得业务数据的相关参数。
在610部分中，终端发送的BSR可以有多种不同的实现方式。
在BSR的一种可能的实现方式中，该BSR由第一MAC协议数据单元(protocol data unit，PDU)承载，该第一MAC PDU还包括逻辑信道标识，其中该逻辑信道标识用于识别该BSR。这种BSR可以理解为一种新定义的BSR格式，例如可以定义为latency-critical BSR format， 但可以理解，本申请并不限定该BSR格式的具体名称。该BSR格式中对缓存大小(buffer size)的定义可以是指定的下一个传输机会或时间之前预计到达的数据总量。该BSR的优先级可以与其他类型的BSR(例如常规BSR和周期BSR)相同，高于传输数据的MAC服务数据单元(sevice data unit，SDU)的优先级。
通过该实施方式，可以减少对已有MAC CE的影响，从而简化实现。
例如，用来识别上述BSR的逻辑信道标识可以是包含在MAC子头中的逻辑信道标识符(logical channel ID，LCID)，MAC子头包含在第一MAC PDU中。例如表1所示，可以使用LCID对应的预留码值(codepoint)/索引(index)来识别该BSR。在表1中，原来预留的码值/索引44被用来表示该新定义的BSR格式。无线接入网设备在第一MAC PDU中解析到LCID对应的该码值/索引44时便可以知道接收到的是该新定义的BSR格式。
表1
例如，用来识别上述BSR的逻辑信道标识也可以是包含在MAC子头中的扩展逻辑信道标识符(extended LCID，eLCID)，MAC子头包含在第一MAC PDU中。例如表2所示，可以使用eLCID对应的预留码值(codepoint)/索引(index)来识别该BSR。在表2中，原来预留的码值249/索引313被用来表示该新定义的BSR格式。无线接入网设备在第一MAC PDU中解析到eLCID对应的该码值249/索引313时便可以知道接收到的是该新定义的BSR格式。
表2
在BSR的另一种可能的实现方式中，该BSR由第二MAC PDU承载，该第二MAC PDU还包括预留域，其中该预留域用于识别该BSR。这种BSR可以理解为原有的BSR格式。用来识别上述BSR的预留域可以是包含在MAC子头中的R域，MAC子头包含在第二MAC PDU中。在R＝1的情况下，表示该BSR上报的是数据量N1+N2；在R＝0的情况下，表示该BSR上报的是数据量N1。或者，在R＝0的情况下，表示该BSR上报的是数据量N1+N2；在R＝1的情况下，表示该BSR上报的是数据量N1。无线接入网设备在第二MAC PDU中解析到R的取值时，便可以知道该BSR上报的是数据量N1还是数据量N1+N2。
通过该实施方式，可以无需引入新的BSR格式，也无需引入额外的指示开销。
在610部分中，触发终端发送BSR可以有多种不同的实现方式。
在发送BSR的一种可能的实施方式中，终端可以周期性的向无线接入网设备发送该BSR。该周期性发送的BSR可以不受常规BSR发送的影响。例如，无线接入网设备可以为终端配置发送该BSR的周期，终端根据该周期向无线接入网设备发送BSR。发送该BSR的周期可以与上下行时间单元的分布和子载波间隔有关。例如，当上下行时间单元的分布为DDUDDDDUDD(其中D代表下行时间单元，U代表上行时间单元)，子载波间隔为30kHz时，两个上行时间单元之间的时间间隔是5个时间单元，以子载波间隔为30kHz的情况下一个时间单元的长度为0.5毫秒为例，则发送该BSR的周期可以是5*0.5＝2.5毫秒。发送该BSR的周期也可以与业务数据的周期有关，本申请对此不做限定。通过该实施方式，可以及时上报待传输的上行数据量，上行数据可以被及时调度，从而降低数据传输时延。
在发送BSR的另一种可能的实施方式中，当终端的缓存中存在未传输完成的剩余数据或预估在时间间隔T1内有数据包到达时，终端向无线接入网设备发送该BSR。例如，当终端的缓存中存在完整数据包传输一部分之后对应的剩余数据时，终端向无线接入网设备发送上述BSR。又例如，当终端的缓存中存在新到达的完整数据包对应的数据时，终端向无线接入网设备发送上述BSR。通过该实施方式，可以及时上报待传输的上行数据量，上行数据可以被及时调度，从而降低数据传输时延。
可以理解，在610部分之前，终端还可以向无线接入网设备发送调度请求(scheduling request，SR)。相应地，无线接入网设备接收该SR，基于该SR为终端分配承载前述BSR的资源，并向终端发送指示该资源的信息。终端接收到指示该资源的信息后，可以在该指示的资源上发送610部分中的BSR。
在620部分的一种可能的实施方式中，无线接入网设备可以基于610部分中接收的BSR向终端发送上述调度信息。例如，无线接入网设备通过接收前述BSR获知终端有N1+N2数据量的数据待发送，则可以为终端分配能够承载数据量N1+N2的资源，并将该资源的资源分配信息包含在调度信息中发送给终端。终端在接收到该资源分配信息后，便 可以在630部分中使用该资源进行数据量N1+N2对应数据的发送。
通过上述方式，网络设备可以根据终端上报的BSR提前为终端分配足够承载终端剩余数据和未来一段时间内预估数据的资源，从而能够避免终端占用有限的无线资源再次发送BSR，降低了数据传输时延，提升了终端用户的体验。
相应于上述方法实施例给出的方法，本申请实施例还提供了相应的装置，包括用于执行上述实施例相应的模块。所述模块可以是软件，也可以是硬件，或者是软件和硬件结合。
图10提供了一种终端的结构示意图。该终端可适用于图1、图2、图3、图4或图5所示出的场景中。该终端或该终端中的部件可以执行前述的方法600以及各种可能的实施方式。为了便于说明，图10仅示出了终端的主要部件。如图10所示，终端1000包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端进行控制，执行软件程序，处理软件程序的数据。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端开机后，处理器可以读取存储单元中的软件程序，解析并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行处理后得到射频信号并将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端时，射频电路通过天线接收到射频信号，该射频信号被进一步转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
为了便于说明，图10仅示出了一个存储器和处理器。在实际的终端中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本申请实施例对此不作限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图10中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端可以包括多个基带处理器以适应不同的网络制式，终端可以包括多个中央处理器以增强其处理能力，终端的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
在一个例子中，可以将具有收发功能的天线和控制电路视为终端1000的收发单元1011，将具有处理功能的处理器视为终端1000的处理单元1012。如图10所示，终端1000包括收发单元1011和处理单元1012。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元1011中用于实现接收功能的器件视为接收单元，将收发单元1011中用于实现发送功能的器件视为发送单元，即收发单元1011包括接收单元和发送单元。示例性的，接收单元也可以称为接收机、接收器、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。可选的，上述接收单元和发送单元可以是集成在一起的一个单元， 也可以是各自独立的多个单元。上述接收单元和发送单元可以在一个地理位置，也可以分散在多个地理位置。
如图11所示,本申请又一实施例提供了一种装置1100。该装置可以是终端,也可以是终端的部件(例如，集成电路，芯片等等)。或者，该装置可以是无线接入网设备，也可以是网络设备的部件(例如，集成电路，芯片等等)，还可以是能实现全部或部分无线接入网设备功能的逻辑模块或软件。该装置也可以是其他通信模块。例如，该装置1100可以实现方法600中无线接入网设备的功能，或者，该装置1100可以实现方法600中终端的功能。该装置1100可以包括:接口模块1101(或称为接口单元)和处理模块1102(或称为处理单元)，还可以包括存储模块1103(或称为存储单元)。
在一种可能的设计中，如图11中的一个或者多个模块可能由一个或者多个处理器来实现，或者由一个或者多个处理器和存储器来实现；或者由一个或多个处理器和收发器实现；或者由一个或者多个处理器、存储器和收发器实现，本申请实施例对此不作限定。所述处理器、存储器、收发器可以单独设置，也可以集成。
所述装置具备实现本申请实施例描述的终端的功能，比如，所述装置包括终端执行本申请实施例描述的终端涉及步骤所对应的模块或单元或手段(means)，所述功能或单元或手段(means)可以通过软件实现，或者通过硬件实现，也可以通过硬件执行相应的软件实现，还可以通过软件和硬件结合的方式实现。详细可进一步参考前述对应方法实施例中的相应描述。或者，所述装置具备实现本申请实施例描述的无线接入网设备的功能，比如，所述装置包括无线接入网设备执行本申请实施例描述的无线接入网设备涉及步骤所对应的模块或单元或手段(means)，所述功能或单元或手段(means)可以通过软件实现，或者通过硬件实现，也可以通过硬件执行相应的软件实现，还可以通过软件和硬件结合的方式实现。详细可进一步参考前述对应方法实施例中的相应描述。
在一种可能的设计中，装置1100包括：处理模块1102和接口模块1101。装置1100例如可以为终端，也可以是终端的部件(例如处理器、芯片、或芯片系统等)，还可以是能实现全部或部分终端功能的逻辑模块或软件。接口模块1101用于向网络设备发送BSR，该BSR指示数据量N1+N2，其中N1表示终端缓存中的当前数据量，N2表示在时间间隔T1内终端的预估数据量，N1≥0,N2≥0，T1>0。接口模块1101还用于接收来自网络设备的调度信息。处理模块1102用于控制装置1100根据该调度信息向网络设备发送数据，该数据包括上述当前数据量对应的数据和/或上述预估数据量对应的数据。
在装置1100某些可能的实施方式中，上述T1是预定义的，或者，上述T1是由网络设备配置的。
在T1是由网络设备为终端配置的情况下，可以有多种不同的配置方法。例如，T1是通过物理层信令指示的，或者，T1是通过高层信令配置的。又例如，T1是通过物理层信令和高层信令配置的。
在由网络设备为终端配置T1的情况下，网络设备可以根据负载情况配置需要的时间间隔T1。例如，在轻载状态下，可以配置较长的时间间隔T1；在重载状态下，可以配置较短的时间间隔T1。或者，网络设备可以根据当前业务流的QoS需求配置需要的时间间隔T1。例如，当前业务流QoS需求的PDB较小，则可以配置较长的时间间隔T1；若当前业务流QoS需求的PDB较大，则可以配置较短的时间间隔T1。
在装置1100某些可能的实施方式中，上述T1为发送上述BSR的时间单元与下一个满 足条件的上行时间单元之间的时间间隔。可选地，前述下一个满足条件的上行时间单元与发送BSR的时间单元之间包含下行时间单元，其中，该下行时间单元与前述下一个满足条件的上行时间单元的时间间隔大于或等于调度上行数据发送的最小时间间隔。
在装置1100某些可能的实施方式中，处理模块1102还用于：根据数据的周期、数据的包大小以及数据的前次到达时间确定上述预估数据量，或者，根据数据的周期以及数据的前次到达时间确定上述预估数据量。
在装置1100某些可能的实施方式中，上述BSR由第一MAC协议数据单元(protocol data unit，PDU)承载，第一MAC PDU还包括逻辑信道标识，其中该逻辑信道标识用于识别该BSR。
在装置1100某些可能的实施方式中，上述BSR由第二MAC PDU承载，第二MAC PDU还包括预留域，其中该预留域用于识别该BSR。
在装置1100某些可能的实施方式中，接口模块1101用于向网络设备发送BSR，包括：接口模块1101用于周期性的向网络设备发送BSR。
在装置1100某些可能的实施方式中，接口模块1101用于向网络设备发送BSR，包括：当终端的缓存中存在未传输完成的剩余数据，或预估在时间间隔T1内有数据包到达时，接口模块1101用于向网络设备发送上述BSR。
在另一种可能的设计中，装置1100包括接口模块1101。接口模块1101用于接收来自终端的BSR，该BSR指示数据量N1+N2，其中N1表示终端缓存中的当前数据量，N2表示在时间间隔T1内终端的预估数据量，N1≥0,N2≥0，T1>0。接口模块1101还用于向终端发送调度信息，该调度信息调度数据的发送，该数据包括上述当前数据量对应的数据和/或上述预估数据量对应的数据。
在装置1100某些可能的实施方式中，上述T1是预定义的，或者，上述T1是由网络设备配置的。
在装置1100某些可能的实施方式中，上述T1为接收上述BSR的时间单元与下一个满足条件的上行时间单元之间的时间间隔。可选地，下一个满足条件的上行时间单元与接收上述BSR的时间单元之间包含下行时间单元，该下行时间单元与上述上行时间单元的时间间隔大于或等于调度上行数据发送的最小时间间隔。
在装置1100某些可能的实施方式中，上述BSR由第一MAC PDU承载，第一MAC PDU还包括逻辑信道标识，其中该逻辑信道标识用于识别该BSR。
在装置1100某些可能的实施方式中，上述BSR由第二MAC PDU承载，第二MAC PDU还包括预留域，其中该预留域用于识别该BSR。
在装置1100某些可能的实施方式中，接口模块1101用于接收来自终端的BSR，包括：接口模块1101用于周期性的接收来自终端的BSR。
在装置1100某些可能的实施方式中，装置1100还包括处理模块1102。处理模块1102用于控制装置1100根据上述BSR向终端发送上述调度信息。
可以理解的是，上述装置1100以及各种可能的实施方式所对应的有益效果，可参考前述方法实施例或发明内容中的描述，此处不再赘述。
可选地，上述装置1100还可以包括存储模块1103，用于存储数据或者指令(也可以称为代码或者程序)，上述其他模块可以和存储模块交互或者耦合，以实现对应的方法或者功能。例如，处理模块1102可以读取存储模块1103中的数据或者指令，使得装置1100 实现上述实施例中的方法。
在一个例子中，上述装置中的模块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，当装置中的模块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。
参考图12，为本申请实施例提供的一种装置示意图，可用于实现上述方法600以及各种可能的实施方式。如图12所示，该装置包括：处理器1210和接口1230，处理器1210与接口1230耦合。接口1230用于实现与其他模块或设备进行通信。接口1230可以为收发器或输入输出接口。接口1230例如可以是接口电路。可选地，该装置还包括存储器1220，用于存储处理器1210执行的指令或存储处理器1210运行指令所需要的输入数据或存储处理器1210运行指令后产生的数据。
上述方法600以及各种可能的实施方式可以通过处理器1210调用存储器1220中存储的程序或指令来实现。存储器1220可以在该装置的内部，也可以在该装置的外部，本申请对此不做限定。
可选地，图11中的接口模块1101和处理模块1102的功能/实现过程可以通过图12所示的装置中的处理器1210来实现。或者，图11中的处理模块1102的功能/实现过程可以通过图12所示的装置中的处理器1210来实现，图11中的接口模块1101的功能/实现过程可以通过图12中所示的装置中的接口1230来实现，示例性的，接口模块1101的功能/实现过程可以通过处理器调用存储器中的程序指令以驱动接口1230来实现。
当上述装置为应用于终端的芯片时，该终端的芯片实现上述方法实施例中终端的功能。该芯片从终端中的其它模块(如射频模块或天线)接收信息，该信息是来自其他终端或无线接入网设备的；或者，该芯片向终端中的其它模块(如射频模块或天线)发送信息，该信息是终端发送给其他终端或无线接入网设备的。
当上述装置为应用于无线接入网设备的芯片时，该芯片实现上述方法实施例中无线接入网设备的功能。该芯片从无线接入网设备中的其它模块(如射频模块或天线)接收信息，该信息是来自其他无线接入网设备或终端的；或者，该芯片向无线接入网设备中的其它模块(如射频模块或天线)发送信息，该信息是无线接入网设备发送给其他无线接入网设备或终端的。
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，而不应对本申请实施例的实施过程构成任何限定。
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方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)、寄存器、硬盘、可移动磁盘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。
本申请还提供了一种计算机可读介质，其上存储有计算机程序，该计算机程序被计算机执行时实现上述任一方法实施例的功能。
本申请还提供了一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
本申请中各个实施例之间相同或相似的部分可以互相参考。在本申请中各个实施例、以及各实施例中的各个实施方式/实施方法/实现方法中，如果没有特殊说明以及逻辑冲突，不同的实施例之间、以及各实施例中的各个实施方式/实施方法/实现方法之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例、以及各实施例中的各个实施方式/实施方法/实现方法中的技术特征根据其内在的逻辑关系可以组合形成新的实施例、实施方式、实施方法、或实现方法。以上所述的本申请实施方式并不构成对本申请保护范围的限定。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。

Claims (38)

  1. 一种数据传输方法，其特征在于，所述方法应用于终端，所述方法包括：
    向网络设备发送缓存状态报告BSR，所述BSR指示数据量N1+N2，其中N1表示所述终端缓存中的当前数据量，N2表示在时间间隔T1内所述终端的预估数据量，N1≥0,N2≥0，T1>0；
    接收来自所述网络设备的调度信息；以及
    根据所述调度信息向所述网络设备发送数据，所述数据包括所述当前数据量对应的数据和/或所述预估数据量对应的数据。
  2. 根据权利要求1所述的方法，其特征在于，所述T1为发送所述BSR的时间单元与下一个满足条件的上行时间单元之间的时间间隔。
  3. 根据权利要求2所述的方法，其特征在于，所述下一个满足条件的上行时间单元与发送所述BSR的时间单元之间包含下行时间单元，所述下行时间单元与所述上行时间单元的时间间隔大于或等于调度上行数据发送的最小时间间隔。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，所述方法还包括：
    根据数据的周期、数据的包大小、以及数据的前次到达时间确定所述预估数据量；或者，
    根据数据的周期、以及数据的前次到达时间确定所述预估数据量。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述BSR由第一媒体接入控制MAC协议数据单元PDU承载，所述第一MAC PDU还包括逻辑信道标识，所述逻辑信道标识用于识别所述BSR。
  6. 根据权利要求1-4中任一项所述的方法，其特征在于，所述BSR由第二MAC PDU承载，所述第二MAC PDU还包括预留域，所述预留域用于识别所述BSR。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述向所述网络设备发送所述BSR，包括：
    周期性的向所述网络设备发送所述BSR。
  8. 根据权利要求1-6中任一项所述的方法，其特征在于，所述向所述网络设备发送所述BSR，包括：
    当所述终端的缓存中存在未传输完成的剩余数据，或预估在所述时间间隔T1内有数据包到达时，向所述网络设备发送所述BSR。
  9. 根据权利要求1-8中任一项所述的方法，其特征在于，所述T1是预定义的，或者，所述T1是由所述网络设备配置的。
  10. 一种数据传输方法，其特征在于，所述方法应用于网络设备，所述方法包括：
    接收来自终端的缓存状态报告BSR，所述BSR指示数据量N1+N2，其中N1表示所述终端缓存中的当前数据量，N2表示在时间间隔T1内所述终端的预估数据量，N1≥0,N2≥0，T1>0；
    向所述终端发送调度信息，所述调度信息调度数据的发送，所述数据包括所述当前数据量对应的数据和/或所述预估数据量对应的数据。
  11. 根据权利要求10所述的方法，其特征在于，所述T1为接收所述BSR的时间单元与下一个满足条件的上行时间单元之间的时间间隔。
  12. 根据权利要求11所述的方法，其特征在于，所述下一个满足条件的上行时间单元与接收所述BSR的时间单元之间包含下行时间单元，所述下行时间单元与所述上行时间单元的时间间隔大于或等于调度上行数据发送的最小时间间隔。
  13. 根据权利要求10-12中任一项所述的方法，其特征在于，所述BSR由第一MAC PDU承载，所述第一MAC PDU还包括逻辑信道标识，所述逻辑信道标识用于识别所述BSR。
  14. 根据权利要求10-12中任一项所述的方法，其特征在于，所述BSR由第二MAC PDU承载，所述第二MAC PDU还包括预留域，所述预留域用于识别所述BSR。
  15. 根据权利要求10-14中任一项所述的方法，其特征在于，所述接收来自所述终端的所述BSR，包括：
    周期性的接收来自所述终端的所述BSR。
  16. 根据权利要求10-15中任一项所述的方法，其特征在于，所述T1是预定义的，或者，所述T1是由所述网络设备配置的。
  17. 一种通信装置，其特征在于，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求1至9中任一项所述的方法。
  18. 一种通信装置，其特征在于，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求10至16中任一项所述的方法。
  19. 一种数据传输装置，其特征在于，所述装置应用于终端，所述装置包括：
    发送模块，用于向网络设备发送缓存状态报告BSR，所述BSR指示数据量N1+N2，其中N1表示所述终端缓存中的当前数据量，N2表示在时间间隔T1内所述终端的预估数据量，N1≥0,N2≥0，T1>0；
    接收模块，用于接收来自所述网络设备的调度信息；以及
    所述发送模块，还用于根据所述调度信息向所述网络设备发送数据，所述数据包括所述当前数据量对应的数据和/或所述预估数据量对应的数据。
  20. 根据权利要求19所述的装置，其特征在于，所述T1为发送所述BSR的时间单元与下一个满足条件的上行时间单元之间的时间间隔。
  21. 根据权利要求20所述的装置，其特征在于，所述下一个满足条件的上行时间单元与发送所述BSR的时间单元之间包含下行时间单元，所述下行时间单元与所述上行时间单元的时间间隔大于或等于调度上行数据发送的最小时间间隔。
  22. 根据权利要求19-21中任一项所述的装置，其特征在于，所述发送模块还用于：
    根据数据的周期、数据的包大小、以及数据的前次到达时间确定所述预估数据量；或者，
    根据数据的周期、以及数据的前次到达时间确定所述预估数据量。
  23. 根据权利要求19-22中任一项所述的装置，其特征在于，所述BSR由第一媒体接入控制MAC协议数据单元PDU承载，所述第一MAC PDU还包括逻辑信道标识，所述逻辑信道标识用于识别所述BSR。
  24. 根据权利要求19-22中任一项所述的装置，其特征在于，所述BSR由第二MAC PDU承载，所述第二MAC PDU还包括预留域，所述预留域用于识别所述BSR。
  25. 根据权利要求19-24中任一项所述的装置，其特征在于，所述发送模块具体用于：
    周期性的向所述网络设备发送所述BSR。
  26. 根据权利要求19-24中任一项所述的装置，其特征在于，所述发送模块具体用于：
    当所述终端的缓存中存在未传输完成的剩余数据，或预估在所述时间间隔T1内有数据包到达时，向所述网络设备发送所述BSR。
  27. 根据权利要求19-26中任一项所述的装置，其特征在于，所述T1是预定义的，或者，所述T1是由所述网络设备配置的。
  28. 一种数据传输装置，其特征在于，所述装置应用于网络设备，所述装置包括：
    接收模块，用于接收来自终端的缓存状态报告BSR，所述BSR指示数据量N1+N2，其中N1表示所述终端缓存中的当前数据量，N2表示在时间间隔T1内所述终端的预估数据量，N1≥0,N2≥0，T1>0；
    发送模块，用于向所述终端发送调度信息，所述调度信息调度数据的发送，所述数据包括所述当前数据量对应的数据和/或所述预估数据量对应的数据。
  29. 根据权利要求28所述的装置，其特征在于，所述T1为接收所述BSR的时间单元与下一个满足条件的上行时间单元之间的时间间隔。
  30. 根据权利要求29所述的装置，其特征在于，所述下一个满足条件的上行时间单元与接收所述BSR的时间单元之间包含下行时间单元，所述下行时间单元与所述上行时间单元的时间间隔大于或等于调度上行数据发送的最小时间间隔。
  31. 根据权利要求28-30中任一项所述的装置，其特征在于，所述BSR由第一MAC PDU承载，所述第一MAC PDU还包括逻辑信道标识，所述逻辑信道标识用于识别所述BSR。
  32. 根据权利要求28-30中任一项所述的装置，其特征在于，所述BSR由第二MAC PDU承载，所述第二MAC PDU还包括预留域，所述预留域用于识别所述BSR。
  33. 根据权利要求28-32中任一项所述的装置，其特征在于，所述接收模块具体用于：
    周期性的接收来自所述终端的所述BSR。
  34. 根据权利要求28-33中任一项所述的装置，其特征在于，所述T1是预定义的，或者，所述T1是由所述网络设备配置的。
  35. 一种通信装置，其特征在于，所述装置包括用于执行权利要求1至9中任一项所述的方法的模块。
  36. 一种通信装置，其特征在于，所述装置包括用于执行权利要求10至16中任一项所述的方法的模块。
  37. 一种计算机可读存储介质，其上存储有指令，其特征在于，所述指令被执行时使得计算机执行如权利要求1至9中任一项所述的方法，或者执行如权利要求10至16中任一项所述的方法。
  38. 一种计算机程序产品，其特征在于，包括计算机程序代码，当所述计算机程序代码被运行时，实现如权利要求1至9中任一项所述的方法，或者执行如权利要求10至16中任一项所述的方法。
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