WO2023011522A1 - 数据传输方法及相关装置 - Google Patents

数据传输方法及相关装置 Download PDF

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Publication number
WO2023011522A1
WO2023011522A1 PCT/CN2022/109963 CN2022109963W WO2023011522A1 WO 2023011522 A1 WO2023011522 A1 WO 2023011522A1 CN 2022109963 W CN2022109963 W CN 2022109963W WO 2023011522 A1 WO2023011522 A1 WO 2023011522A1
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WIPO (PCT)
Prior art keywords
time domain
domain position
terminal device
transmission resource
network device
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PCT/CN2022/109963
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English (en)
French (fr)
Inventor
雷珍珠
周化雨
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展讯半导体(南京)有限公司
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Publication of WO2023011522A1 publication Critical patent/WO2023011522A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a data transmission method and a related device.
  • NTN non-terrestrial networks
  • TA timing advance
  • the TA value is calculated by the terminal device based on its own location information, so the network device cannot determine the specific time domain location where the terminal device actually sends uplink data.
  • the uplink data sent by the terminal device may collide with the downlink data sent by the network device in time, thereby reducing the reliability of data transmission.
  • the embodiment of the present application provides a data transmission method.
  • a time interval is determined by the start time domain position and offset of the uplink transmission resource.
  • the terminal device does not receive the downlink data sent by the network device, and at the same time, the network device does not send The terminal device sends downlink data, so as to avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.
  • the embodiment of the present application provides a data transmission method, the method includes:
  • the terminal device receives the first configuration information sent by the network device, where the first configuration information is used to indicate the offset; the terminal device determines not to receive the downlink sent by the network device between the first time domain position and the second time domain position Data; wherein, the first time domain position is earlier than the second time domain position, the first time domain position is determined according to the offset, and the second time domain position is determined according to the start time domain position of the first uplink transmission resource , the first uplink transmission resource is a resource used by the terminal device to send uplink data.
  • the offset can be understood as K_offset.
  • K_offset is determined by the network device. Specifically, the network device can determine K_offset in the following manner:
  • the network device may determine the K_offset value corresponding to the terminal device according to the TA value fed back by the terminal device.
  • the network device may set K_offset to a value not smaller than the TA fed back by the terminal device.
  • the network device can determine it according to the RTT value between a certain reference point in its service area and the network device.
  • the network device may determine the K_offset from the RTT value between the point farthest from the satellite in its service area and the satellite and the public TA value.
  • the K_offset determined by the network device is equal to the public TA plus the RTT value between the location farthest from the network device in its service area and the network device.
  • the K_offset determined by the network device will be greater than or equal to the TA value determined by the terminal device.
  • the terminal device receives the first configuration information sent by the network device.
  • the first configuration information can be understood as system information (system information).
  • the terminal device can acquire system information by monitoring a broadcast control channel (broadcast control channel, BCCH), thereby acquiring K_offset.
  • BCCH broadcast control channel
  • the terminal device does not receive the downlink data sent by the network device; correspondingly, in the interval formed from the first time domain position to the second time domain position In the interval of , the network device does not send downlink data for the terminal device, which can avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.
  • the time interval between the first time domain position and the second time domain position is the offset; the second time domain position is the start time domain position of the first uplink transmission resource .
  • the first configuration information is also used to indicate a first duration value, and the first duration value is not less than twice the maximum differential delay corresponding to the serving cell where the terminal device is located or the service beam coverage area ;
  • the first time domain position and the second time domain position are earlier than the start time domain position of the first uplink transmission resource
  • the time interval between the first time domain position and the start time domain position of the first uplink transmission resource is equal to the offset; the time interval between the second time domain position and the start time domain position of the first uplink transmission resource The time interval is equal to the difference between the offset and the first duration value.
  • the downlink data sent by the network device includes data sent by the network device through a physical downlink control channel PDCCH and/or data sent by the network device through downlink semi-persistent scheduling.
  • an embodiment of the present application provides a data transmission method, the method including:
  • the terminal device receives first configuration information sent by the network device, where the first configuration information is used to indicate an offset;
  • the terminal device receives downlink control information DCI, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;
  • the terminal device does not receive data sent by the network device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; wherein the first time domain position is earlier than the second time domain position,
  • the first time domain position is determined according to the subframe or time slot where the end position of the DCI transmission resource is located; the second time domain position is determined according to the offset.
  • the terminal device needs to monitor the PDCCH to receive DCI, and determine the start time domain position of the uplink transmission resources through the DCI.
  • the subframe or time slot occupied by the PDCCH is known to both, and the subframe or time slot where the end position of the transmission resource of the DCI sent by the network device to the terminal device is located is used to determine the The first time domain position, K_offset is used to determine the second time domain position, and K_offset is greater than or equal to the TA value of the terminal device, so the actual position where the terminal device sends uplink data can fall between the first time domain position and the second time domain position In the interval composed of two time domain positions.
  • the terminal device within the interval formed from the first time domain position to the second time domain position, the terminal device does not receive the downlink data sent by the network device; correspondingly, from the first time domain position to the second time domain position In the interval formed by the time domain positions, the network device does not send downlink data for the terminal device, which can avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.
  • the DCI is used to indicate a scheduling delay value
  • the scheduling delay value and the offset are used to determine a start time domain position of the first uplink transmission resource.
  • the first time domain position is the subframe or time slot where the end position of the DCI transmission resource is located; the time interval between the second time domain position and the first time domain position is The time sum of the scheduling delay value and the offset.
  • the subframe or time slot where the end position of the DCI transmission resource is located is earlier than the first time domain position; the first time domain position and the subframe where the end position of the DCI transmission resource is located
  • the time interval between frames or time slots is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset.
  • the downlink data sent by the network device includes data sent by the network device through downlink semi-persistent scheduling.
  • the embodiment of the present application provides a data transmission method, the method including:
  • the terminal device receives the second configuration information sent by the network device, the second configuration information is used to indicate the first duration value, and the first duration value is not less than the maximum differential delay corresponding to the serving cell or service beam coverage area where the terminal device is located. double;
  • the terminal device receives downlink control information DCI, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;
  • the terminal device determines not to receive the downlink data sent by the network device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; the subframe or time slot where the end position of the DCI transmission resource is located earlier than the first time domain position; the time interval between the first time domain position and the subframe or time slot where the end position of the transmission resource of the DCI is located is the scheduling delay value indicated by the DCI; the second time domain position The interval between the domain position and the first time domain position is the first duration value.
  • the embodiment of the present application provides a data transmission method, the method including:
  • the network device sends first configuration information to the terminal device, where the first configuration information is used to indicate an offset;
  • the network device determines not to send downlink data for the terminal device between the first time domain location and the second time domain location;
  • the first time domain position is earlier than the second time domain position, the first time domain position is determined according to the offset, the second time domain position is determined according to the start time domain position of the first uplink transmission resource, the The first uplink transmission resource is a resource used by the terminal device to send uplink data.
  • the time interval between the first time domain position and the second time domain position is the offset; the second time domain position is the start time domain position of the first uplink transmission resource .
  • the first configuration information is also used to indicate a first duration value, where the first duration value is not less than twice the maximum differential delay corresponding to the serving cell or serving beam coverage area where the terminal device is located;
  • the first time domain position and the second time domain position are earlier than the start time domain position of the first uplink transmission resource
  • the time interval between the first time domain position and the start time domain position of the first uplink transmission resource is equal to the offset; the time interval between the second time domain position and the start time domain position of the first uplink transmission resource The time interval is equal to the difference between the offset and the first duration value.
  • the network device does not send downlink data for the terminal device between the first time domain location and the second time domain location, including:
  • the network device does not send the data for the terminal device by way of physical downlink control channel PDCCH and/or downlink semi-persistent scheduling.
  • the embodiment of the present application provides a data transmission method, the method including:
  • the network device sends downlink control information DCI to the terminal device, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;
  • the network device does not send downlink data for the terminal device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position , the first time domain position is determined according to the subframe or time slot where the end position of the DCI transmission resource is located; the second time domain position is determined according to the offset.
  • the DCI is used to indicate a scheduling delay value
  • the scheduling delay value and the offset are used to determine a start time domain position of the first uplink transmission resource.
  • the first time domain position is the subframe or time slot where the end position of the DCI transmission resource is located; the time interval between the second time domain position and the first time domain position is The time sum of the scheduling delay value and the offset.
  • the subframe or time slot where the end position of the DCI transmission resource is located is earlier than the first time domain position; the first time domain position and the subframe where the end position of the DCI transmission resource is located
  • the time interval between frames or time slots is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset.
  • the network device does not send downlink data for the terminal device between the first time domain location and the second time domain location, including:
  • the network device does not send data for the terminal device in a downlink semi-persistent scheduling manner between the first time domain position and the second time domain position.
  • the embodiment of the present application provides a data transmission method, the method comprising:
  • the network device sends second configuration information to the terminal device, where the second configuration information is used to indicate a first duration value, and the first duration value is not less than two times the maximum differential delay corresponding to the serving cell or service beam coverage area where the terminal device is located. times;
  • the network device sends downlink control information DCI to the terminal device, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;
  • the network device does not send data to the terminal device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; the subframe or time slot where the DCI transmission resource ends is earlier than the The first time domain position; the time interval between the first time domain position and the subframe or time slot where the end position of the transmission resource of the DCI is located is the scheduling delay value indicated by the DCI; the second time domain position and The interval between the first time domain positions is the first duration value.
  • the embodiment of the present application provides a terminal device, including: a processor and a transceiver;
  • the transceiver is used to receive signals or send signals; the processor is used to execute computer-executable instructions stored in the memory, so that the terminal device executes the first aspect to the third aspect or the first aspect to the third aspect A method in any one of the possible implementations.
  • the embodiment of the present application provides a network device, including: a processor and a transceiver;
  • the transceiver is used to receive signals or send signals; the processor is used to execute computer-executable instructions stored in the memory, so that the network device performs the fourth aspect to the sixth aspect or the fourth aspect to the sixth aspect A method in any one of the possible implementations.
  • the embodiment of the present application provides a data transmission system, the data transmission system includes a terminal device and a network device; the terminal device is used to execute any method as in the first aspect or the first aspect, and the network device For performing any one of the methods of the fourth aspect or the fourth aspect; or, the terminal device is used for performing any one of the methods of the second aspect or the second aspect, and the network device is used for performing the fifth aspect Any one of the methods; or, the terminal device is configured to execute the third aspect or any one of the methods in the third aspect, and the network device is configured to execute the sixth aspect or any one of the methods in the sixth aspect.
  • the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program runs on one or more processors, the The method in any possible implementation manner up to the sixth aspect or from the first aspect to the sixth aspect is executed.
  • the embodiment of the present application provides a computer program product, the computer program product includes program instructions, and when the program instructions are executed by a processor, the processor executes the computer program according to the first aspect to the sixth aspect or the first aspect.
  • the processor executes the computer program according to the first aspect to the sixth aspect or the first aspect.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a model for calculating the maximum differential delay value provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of a location of an uplink pre-configured resource provided by an embodiment of the present application
  • FIG. 4 is a schematic diagram of sending uplink data provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a time delay provided by an embodiment of the present application.
  • FIG. 6 is another schematic diagram of time delay provided by the embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a data transmission method provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a time-domain location provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another time domain location provided by an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of another data transmission method provided by the embodiment of the present application.
  • FIG. 11 is a schematic diagram of another time domain location provided by the embodiment of the present application.
  • Fig. 12 is a schematic diagram of another time domain location provided by the embodiment of the present application.
  • FIG. 13 is a schematic diagram of another time domain location provided by the embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • Fig. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • NTN generally refers to a satellite or unmanned aircraft system (unmanned aircraft system, UAS) platform, etc. for wireless frequency transmission network.
  • UAS unmanned aircraft system
  • NTN can use satellites or high-altitude platforms (HAP) for network deployment.
  • HAP high-altitude platforms
  • Typical scenarios where NTN is applicable include but are not limited to scenarios where base stations cannot be built, such as continuous coverage in remote mountainous areas, deserts, oceans, and forests; or scenarios where base stations are damaged, such as emergency communications when disasters occur or base stations are damaged.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • the communication system includes a satellite, a terminal device, and a gateway (gateway, which may also be called a ground station).
  • the wireless link between the satellite and the terminal equipment can be called the service link
  • the wireless link between the satellite and the gateway station can be called the feedback link
  • one or several gateway stations of the communication system need to be connected to a public data network (public data network, PDN), such as the network in FIG. 1 .
  • PDN public data network
  • the terminal device may also be called user equipment (user equipment, UE), terminal, access terminal, subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, User Agent or User Device.
  • the terminal device may be a mobile station (mobile station, MS), a subscriber unit (subscriber unit), a drone, an Internet of Things (internet of things, IoT) device, a station in a wireless local area network (wireless local area network, WLAN), ST), cellular phone (cellular phone), smart phone (smartphone), cordless phone, wireless data card, tablet computer, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station , personal digital assistant (PDA) equipment, laptop computer (laptop computer), machine type communication (machine type communication, MTC) terminal, handheld device with wireless communication function, computing device or connected to a wireless modem Other processing devices, vehicle-mounted devices, and wearable devices (also referred to as wearable smart devices).
  • the terminal device may also be a terminal device in a next-generation communication system, for example, a terminal device in a 5G system or a terminal device in a future evolved public land mobile network (PLMN), a new radio (new radio, NR ) Terminal equipment in the system, etc.
  • a cell may consist of one or more beams. As shown in Figure 1, a cell includes multiple beams.
  • the base station in the communication system may be located on land, for example, the gateway station in FIG. 1 may have the function of a base station.
  • the satellite will act as a relay between the terminal device and the gateway station, receive the data sent by the terminal device through the service link, and then forward the data to the gateway station on the ground.
  • the base station in the communication system may also be set up on a satellite, for example, the satellite in FIG. 1 may have the function of a base station.
  • the satellite with the base station function can be considered as one of the evolved base station (evolutional NodeB, eNB) or 5G base station (gNB).
  • eNB evolved NodeB
  • gNB 5G base station
  • the terminal device can communicate with the network device, and the network device can be understood as a device capable of data processing and network communication.
  • the network device may include a base station (for example, eNB, gNB, etc.) or a network access device, etc., which is not limited in this application.
  • a base station for example, eNB, gNB, etc.
  • a network access device etc., which is not limited in this application.
  • the method involved in the present application will be described exemplarily below by taking the network device as a satellite with a base station function as an example.
  • the maximum differential delay value can be understood as the propagation delay corresponding to the position furthest from the network device and the propagation time corresponding to the position closest to the network device within the coverage area of a certain cell or a certain beam. delay difference.
  • the maximum differential delay value is the maximum differential delay value at the cell level. It can be understood that the maximum differential delay values corresponding to different cells may be the same or different.
  • the maximum differential delay value is the maximum differential delay value at the beam level. It can be understood that the maximum differential delay values corresponding to different beam coverage ranges may be the same or different.
  • FIG. 2 is a schematic diagram of a model for calculating a maximum differential delay value provided by an embodiment of the present application, and the schematic diagram shown in FIG. 2 takes a coverage area of a beam as an example.
  • d1 is the shortest distance between the network device and the beam coverage area
  • d2 is the furthest distance between the network device and the beam coverage area. It can be understood that the network device can calculate the maximum differential delay value corresponding to a cell or beam coverage area through the Pythagorean theorem.
  • the network equipment is relatively far from the ground, and the coverage area of the cell or beam formed by the network equipment is relatively large, there is a large differential delay in a certain cell or a certain beam coverage area.
  • twice the maximum differential delay value of a synchronous network device is 20.6 milliseconds.
  • the scheduling involved in this application may include dynamic scheduling and downlink semi-persistent scheduling (semi-persistent scheduling, SPS).
  • dynamic scheduling can be understood as a network device making a scheduling decision in each transport time interval (transport time interval, TTI), and notifying all scheduled terminal devices of the scheduling information through control signaling.
  • transport time interval transport time interval
  • downlink semi-persistent scheduling may also be called semi-persistent scheduling or semi-persistent scheduling.
  • SPS allows semi-persistent configuration of wireless resources and periodically allocates the resource to a specific terminal device.
  • the network device uses the physical downlink control channel (physical downlink control channel, PDCCH) scrambled by the cell-radio network temporary identifier (C-RNTI) in a certain TTI to specify the channel used by a certain terminal device.
  • Radio resources (herein referred to as SPS resources), that is to say, the network device notifies the terminal device when to start semi-persistent scheduling through the PDCCH. Every time a cycle (which can be understood as a cycle of semi-persistent scheduling), the terminal device can use the SPS resource to receive or send data.
  • the network device does not need to issue a PDCCH in the subframe or time slot (herein referred to as an SPS subframe) to specify allocated resources, thereby saving the transmission overhead of the control signaling PDCCH.
  • the pre-configured resource transmission mode may include an uplink pre-configured resource transmission mode and a downlink pre-configured resource transmission mode.
  • the preconfigured resource transmission manner involved in the embodiment of the present application includes an uplink preconfigured resource transmission manner.
  • the uplink pre-configured resource transmission may be called configured grant uplink transmission, including type 1 configuration grant (configured grant type 1) and type 2 configuration grant (configured grant type 2).
  • the terminal device when the terminal device receives the high-level configuration of configured grant type 1, the terminal device can determine the location of the uplink pre-configured resource according to the high-level configuration of the configured grant type 1, and use the uplink pre-configured resource to send upstream data.
  • FIG. 3 is a schematic diagram of a position of an uplink pre-configured resource provided by an embodiment of the present application. As shown in Figure 3, uplink pre-configured resources are periodic.
  • the terminal device After the terminal device receives the high-level configuration of configured grant type 2, the terminal device also needs to receive the downlink control information (DCI) sent by the network device, and determine the high-level configuration based on the downlink control information. Whether resources of configured grant type 2 are available.
  • DCI downlink control information
  • the TA value is introduced.
  • the terminal device when the terminal device sends uplink data, it will send it in advance according to the TA value.
  • FIG. 4 is a schematic diagram of sending uplink data provided by an embodiment of the present application.
  • the network configures periodic uplink transmission resources (which can be understood as configure grant type 1 or configure grant type 2) for terminal devices through high-level signaling.
  • periodic uplink transmission resources which can be understood as configure grant type 1 or configure grant type 2
  • terminal devices use the uplink transmission resources to send uplink data, It needs to be sent in advance (the advance amount is the TA value determined by the terminal device). That is to say, the time domain position where the terminal device actually sends the uplink data is TA time units ahead of the time domain position of the uplink transmission resources configured by the network.
  • the distance between the network device and the terminal device is generally hundreds or even thousands of kilometers, so the transmission delay between the network device and the terminal device increases significantly, resulting in a large TA in the NTN network. .
  • FIG. 5 is a schematic diagram of time delay provided by an embodiment of the present application.
  • a downlink subframe is aligned with an uplink subframe.
  • the transmission delay between the network device and the terminal equipment (UE) is delay A.
  • the TA value can be understood as the difference between the start time domain position of the terminal device receiving the downlink subframe and the start time domain position of transmitting the uplink subframe.
  • the offset value K_offset is introduced.
  • FIG. 6 is another schematic diagram of time delay provided by the embodiment of the present application, and the scheduling time delay of PDCCH scheduling PUSCH is enhanced to K2+K_offset. That is to say, in the process of scheduling the PUSCH by the PDCCH, the downlink control information in the PDCCH will indicate the scheduling delay value K2 and the offset value K_offset to the terminal equipment. Then, the terminal device jointly determines the transmission resource position of the PUSCH according to the indicated K2 value and the offset value K_offset. In this way, it can be ensured that there must be a sufficiently large time interval between the time of receiving the PDCCH and the time of sending the PUSCH for the terminal equipment to perform early transmission.
  • the TA value of each terminal device needs to be jointly determined according to the common TA (common TA) and the TA of the terminal device level.
  • the TA value of a terminal device is equal to the public TA plus the TA of the terminal device level.
  • the public TA can be understood as the TA value determined by the distance between the network device and a certain reference point, and the position of the reference point can be a network device, a gateway station, or a service link or a feedback link anywhere on the road.
  • the public TA can be understood as the round trip time (RTT) between the reference point and the network device.
  • RTT round trip time
  • the TA at the terminal device level may be interpreted as a TA value calculated autonomously by the terminal device according to its own location information and ephemeris information.
  • the so-called terminal device-level TA means that different terminal devices calculate their respective TA values. Since different terminal devices are located at different distances from network devices, the TA values calculated by different terminal devices are different.
  • the TA at the terminal device level may be the round-trip propagation delay between the terminal device and the network device.
  • the terminal device sends uplink data to the network device in advance according to the TA value, and the TA value of each terminal device is calculated by itself, so the network device cannot know the actual uplink data sent by the terminal device. time domain location.
  • the terminal equipment cannot receive and transmit data at the same time.
  • the uplink data sent by the terminal device may collide with the downlink data sent by the network device in time, thereby reducing the reliability of data transmission.
  • the terminal device can indicate the TA value determined by itself by transmitting signaling to the network device, so that the network device can avoid the moment when the terminal device sends uplink data, thereby avoiding collisions between uplink data and downlink data.
  • the terminal device each time the terminal device updates the TA value, it sends a signaling to the network device to inform the network device of the new TA value, and the signaling overhead is large.
  • the embodiment of the present application provides a data transmission method, which determines a time interval according to the offset and the start time domain position of the uplink transmission resource.
  • the terminal device does not receive the downlink data sent by the network device, and at the same time , the network device does not send downlink data to the terminal device, thereby avoiding time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby avoiding resource collision and improving the reliability of data transmission.
  • the data transmission method provided by this application will be explained next by combining the network device and the terminal device.
  • FIG. 7 is a schematic flowchart of a data transmission method provided in an embodiment of the present application, wherein the method includes:
  • the network device sends first configuration information to the terminal device, where the first configuration information is used to indicate an offset.
  • the terminal device receives the first configuration information sent by the network device.
  • the offset can be understood as the offset K_offset of the fifth part in the terminology.
  • the unit of K_offset can be subframe or time slot.
  • K_offset is determined by the network device. Specifically, the network device can determine K_offset in the following manner:
  • the network device can determine the K_offset value corresponding to the terminal device according to the TA value fed back by the terminal device.
  • the network device may set K_offset to a value not smaller than the TA fed back by the terminal device.
  • the network device can determine it according to the RTT value between a certain reference point in its service area and the network device.
  • the network device may determine the K_offset from the RTT value and the public TA value between the location farthest from the network device in its service area and the network device.
  • the K_offset determined by the network device is equal to the public TA plus the RTT value between the location farthest from the network device in its service area and the network device.
  • the K_offset determined by the network device will be greater than or equal to the TA value determined by the terminal device.
  • the terminal device may receive the first configuration information sent by the network device after accessing the network device and obtaining downlink synchronization.
  • the first configuration information may be exemplary system information (system information).
  • the terminal device may obtain the system information by monitoring a broadcast control channel (broadcast control channel, BCCH), thereby obtaining K_offset.
  • BCCH broadcast control channel
  • the network device determines not to send downlink data for the terminal device between the first time domain position and the second time domain position.
  • the terminal device determines not to receive the downlink data sent by the network device between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position, and the first time domain position
  • the domain position is determined according to the offset
  • the second time domain position is determined according to the start time domain position of the first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data.
  • the terminal device before the terminal device sends uplink data to the network device, it must determine the time domain position of the uplink transmission resources configured by the network device.
  • the first uplink transmission resource may be understood as an uplink transmission resource configured by the network device for the terminal device.
  • the second time domain position is determined according to the start time domain position of the first uplink transmission resource, and K_offset is greater than or equal to the TA value determined by the terminal device, so the terminal device The actual location for sending the uplink data may fall within the interval formed from the first time domain location to the second time domain location.
  • the terminal device does not receive the downlink data sent by the network device; correspondingly, in the interval formed from the first time domain position to the second time domain position In the interval of , the network device does not send downlink data for the terminal device, which can avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.
  • the manner of the network device sending the downlink data involved in the embodiment of the present application includes: the network device sends the downlink data to the terminal device by means of dynamic scheduling and downlink semi-persistent scheduling.
  • the network device can dynamically schedule a physical downlink shared channel (physical downlink shared channel, PDSCH) through DCI to deliver data.
  • PDSCH physical downlink shared channel
  • the network device may use downlink transmission resources to periodically send downlink data to the terminal device. It can be understood that, among the periodic downlink transmission resources, one or more downlink transmission resources fall within the interval formed from the first time domain position to the second time domain position. On the downlink transmission resources falling within the interval formed by the first time domain position to the second time domain position, the network device does not send downlink data.
  • the terminal device monitors the PDCCH to receive the DCI is also implemented in a periodic manner. Periodically, there will be one or more PDCCH monitoring opportunities in the first time domain position to the second time domain position. within the composed interval. At a PDCCH monitoring opportunity falling within the interval formed from the first time domain position to the second time domain position, the terminal device does not monitor the PDCCH.
  • the terminal device does not receive the downlink data sent by the network device. It may be understood that the terminal device does not receive the data sent by the network device through downlink semi-persistent scheduling and the downlink control information sent through the PDCCH.
  • the fact that the network device does not send downlink data for the terminal device may be understood as that the network device does not send data for the terminal device through PDCCH and/or downlink semi-persistent scheduling.
  • the time interval between the first time domain position and the second time domain position is the offset; the second time domain position is the start time domain position of the first uplink transmission resource.
  • FIG. 8 is a schematic diagram of a time-domain location provided by an embodiment of the present application.
  • Each shaded rectangle in FIG. 8 can be understood as the above-mentioned first uplink transmission resource.
  • the first uplink transmission resource is periodic and may be called an uplink preconfigured resource (UL configure grant). That is to say, the terminal device can use the uplink pre-configured resource to periodically send uplink data to the network device.
  • UL configure grant uplink preconfigured resource
  • Three UL configure grants are shown in Figure 8.
  • the method provided in the embodiment of the present application will be described below by taking the first UL configure grant as an example, and the first UL configure grant will be referred to as the first UL configure grant later.
  • the terminal device determines K_offset and the start time domain position of the first UL configure grant.
  • the terminal device may determine the K_offset and the start time domain position of the first UL configure grant by receiving the system information sent by the network device.
  • the start time domain position of the first UL configure grant that is, the time domain position n in FIG. 8
  • the time domain position corresponding to K_offset time units before the start time domain position of the first UL configure grant that is, the time domain position n-K_offset in FIG. 8
  • the first time domain position above can be understood as the first time domain position above.
  • the terminal device does not receive the data sent by the network device through downlink semi-persistent scheduling and the downlink control information sent through the PDCCH in the interval formed by the time domain position n-K_offset to n; correspondingly, the network device in the time domain position n- In the interval composed of K_offset to n, the data for the terminal device is not sent through PDCCH and/or downlink semi-persistent scheduling.
  • K_offset is a parameter configured on the network device side. Generally, K_offset is greater than or equal to the TA value determined by the terminal equipment. That is to say, the time when the terminal device sends the uplink data in advance according to the TA value must fall between the time domain positions n-K_offset to n.
  • the network device does not send downlink data for the terminal device, and the terminal device does not receive the downlink data sent by the network device, which can avoid the time when the terminal device sends data and The time when the network device sends data is the same, so as to avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.
  • the first configuration information is also used to indicate a first duration value, and the first duration value is not less than twice the maximum differential delay corresponding to the serving cell where the terminal device is located or the coverage area of the serving beam;
  • the first time domain position and the second time domain position are earlier than the start time domain position of the first uplink transmission resource; the time interval between the first time domain position and the start time domain position of the first uplink transmission resource equal to the offset; the time interval between the second time domain position and the start time domain position of the first uplink transmission resource is equal to the difference between the offset and the first duration value.
  • the network device does not know the TA value determined by the terminal device through autonomous calculation, nor does it know the specific time domain position where the terminal device sends uplink data, the network device can determine the TA value of the terminal device according to the first duration value. The value range of the TA value.
  • the first duration value can be understood as a value determined by the maximum differential delay value, and the first duration value is not less than twice the maximum differential delay corresponding to the serving cell or service beam coverage area where the terminal device is located.
  • the maximum differential delay value can be understood as the difference between the RTT corresponding to the farthest point from the satellite and the RTT corresponding to the closest point to the satellite within a cell or a beam coverage area.
  • the maximum differential delay value please refer to Part 2 of the previous terminology part, and details will not be repeated here.
  • the network device may indicate the size of the first duration value to the terminal device through the first configuration information. It should be noted that the first duration value and K_offset may also be indicated separately, which is not limited in this application.
  • FIG. 9 is a schematic diagram of another time domain location provided by the embodiment of the present application.
  • the maximum TA value determined by the terminal device through autonomous calculation can be K_offset, that is, the terminal device can send uplink data at the time domain position n-K_offset at the earliest.
  • the minimum TA value determined by the terminal device through autonomous calculation may be K_offset-T, where T may be understood as the first duration value, that is, the terminal device may send uplink data at the time domain position n-K_offset+T at the latest. Therefore, the actual start position of the terminal device to send the uplink data will fall within the interval formed from n-K_offset to n-K_offset+T.
  • the time-domain position n-K_offset may be understood as the above-mentioned first time-domain position
  • the time-domain position n-K_offset+T may be understood as the above-mentioned second time-domain position. It can be understood that, as shown in FIG. 9 , the time interval between the first time domain position and the start time domain position of the first uplink transmission resource (that is, n in FIG. 9 ) is K_offset. The time interval between the second time domain position and the start time domain position of the first uplink transmission resource is equal to K_offset-T.
  • the terminal device does not receive the data sent by the network device through downlink semi-persistent scheduling and the downlink control information sent through the PDCCH; correspondingly Specifically, the network device does not send data for the terminal device through PDCCH and/or downlink semi-persistent scheduling, so as to avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission sex.
  • the time domain positions in this embodiment consist of a smaller interval, that is to say, the network device can send downlink data on more resources, which can improve resource utilization.
  • the above data transmission method is applicable to the case where the network device configures periodic uplink transmission resources for the terminal device.
  • the data transmission method for the case where the network device configures uplink transmission resources for the terminal device through dynamic scheduling is introduced.
  • Fig. 10 is a schematic flowchart of another data transmission method provided by the embodiment of the present application, wherein the method includes:
  • the network device sends first configuration information to the terminal device, where the first configuration information is used to indicate an offset.
  • the terminal device receives the first configuration information sent by the network device.
  • step 701 For details, please refer to the description of step 701, which will not be repeated here.
  • the network device sends DCI to the terminal device, where the DCI is used to schedule a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data.
  • the terminal device receives the DCI.
  • the terminal device needs to monitor the PDCCH to receive DCI, and determine the start time domain position of the uplink transmission resources through the DCI.
  • the DCI is used to indicate a scheduling delay value, and the scheduling delay value and the offset are used to determine the start time domain position of the first uplink transmission resource.
  • the terminal device after receiving the uplink grant information in the DCI sent by the network device, the terminal device will determine the start time domain position of the uplink transmission resource according to the scheduling delay value and K_offset indicated by the uplink grant information.
  • the time interval between the time when the terminal device sends uplink data and the subframe or time slot where the end position of the DCI transmission resource is located is the time sum of the scheduling delay value and K_offset.
  • scheduling delay value k will be used for description later.
  • the network device determines not to send data for the terminal device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; correspondingly, the terminal device The downlink data sent by the network device is not received between domain positions; wherein, the first time domain position is earlier than the second time domain position, and the first time domain position is based on the subframe where the end position of the DCI transmission resource is located Or the time slot is determined; the second time domain position is determined according to the offset.
  • the subframe or time slot occupied by the PDCCH is known to both, and the subframe or time slot where the end position of the transmission resource of the DCI sent by the network device to the terminal device is located
  • the slot is used to determine the first time domain position
  • K_offset is used to determine the second time domain position
  • K_offset is greater than or equal to the TA value of the terminal device, so the actual position where the terminal device sends uplink data can fall within the first time domain The domain position to the interval formed by the second time domain position.
  • the terminal device does not receive the downlink data sent by the network device; correspondingly, in the interval formed from the first time domain position to the second time domain position In the interval of , the network device does not send downlink data for the terminal device, which can avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.
  • the downlink data sent by the network device includes data sent by the network device through downlink semi-persistent scheduling; The device sends data.
  • the first time domain position is the subframe or time slot where the end position of the DCI transmission resource is located; the time interval between the second time domain position and the first time domain position is the The time sum of the scheduling delay value and the offset.
  • FIG. 11 is a schematic diagram of another time-domain location provided by an embodiment of the present application.
  • the terminal device receives the DCI sent by the network device, the subframe or time slot where the end position of the transmission resource of the DCI is located is n1, and the start time domain of the uplink transmission resource can be determined according to k and K_offset indicated by the DCI position, that is, the starting position of PUSCH in Figure 11 .
  • the time interval between the subframe or time slot where the end position of the DCI transmission resource received by the terminal device is located and the start time domain position of the PUSCH is k+K_offset.
  • the terminal device determines the time domain position n1, which can be understood as the first time domain position; the time domain position corresponding to k+K_offset time units after the time domain position n1, that is, FIG. 11
  • the n1+k+K_offset position in can be understood as the second time domain position.
  • the terminal device does not receive downlink data sent by the network device; correspondingly, the network device does not send downlink data for the terminal device.
  • the downlink data sent by the network device includes data sent by the network device through downlink semi-persistent scheduling; The device sends data.
  • the time domain position at which the terminal device sends the uplink data in advance according to the TA value independently calculated must fall between the time domain positions n1 to n1+k+K_offset. Therefore, within the interval composed of n1 to n1+k+K_offset, the network device does not send downlink data for the terminal device, and the terminal device does not receive the downlink data sent by the network device, which can avoid the uplink data sent by the terminal device from colliding with the network device.
  • the downlink data sent collides in time, thereby improving the reliability of data transmission.
  • the second time domain position may be adjusted forward by 1 or 2 time units.
  • n1+k+K_offset-1 may be used as the second time domain position, that is, within the interval formed from n1 to n1+k+K_offset-1, the network device does not send downlink data for the terminal device, and the terminal The device also does not receive downlink data sent by the network device.
  • the subframe or time slot where the end position of the transmission resource of the DCI is located is earlier than the first time domain position; the first time domain position and the subframe where the end position of the transmission resource of the DCI is located Or the time interval between time slots is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset.
  • FIG. 12 is a schematic diagram of another time domain location provided by an embodiment of the present application.
  • the terminal device determines the subframe or time slot where the end position of the DCI transmission resource is located, that is, the position in the domain n1, and then determines the position in the time domain n1+k according to k.
  • the time domain position n1+k can be understood as is the first time domain position.
  • the terminal device can determine the time domain position n1+k+K_offset according to k and K_offset, and the moment of the time domain position n1+k+K_offset can be understood as the second time domain position. It can be understood that the time interval between the first time domain position and time domain position n1 is equal to k, and the time interval between the time domain position n1+k+K_offset and the first time domain position is equal to K_offset.
  • K_offset is a parameter configured on the network device side.
  • the offset K_offset is greater than or equal to the TA value determined by the terminal device. That is to say, the time when the terminal device sends uplink data in advance according to the TA value must fall between n1+k and n1+k+K_offset.
  • the second time domain position may be adjusted forward by 1 or 2 time units.
  • the time domain position n1+k+K_offset-1 can be understood as the second time domain position, and within the interval composed of n1+k to n1+k+K_offset-1, the network device does not send For downlink data, the terminal device does not receive the downlink data sent by the network device, which can avoid the time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.
  • the downlink data sent by the network device includes data sent by the network device through downlink semi-persistent scheduling; The device sends data.
  • the terminal device receives the second configuration information sent by the network device, the second configuration information is used to indicate the first duration value, and the first duration value is not less than the corresponding time period of the serving cell where the terminal device is located or the service beam coverage area. Twice the maximum differential delay of
  • the terminal device receives DCI, where the DCI is used to schedule a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data;
  • the terminal device does not receive downlink data sent by the network device between the first time domain position and the second time domain position; the subframe or time slot where the end position of the DCI transmission resource is located is earlier than the first time domain position; the The time interval between the first time domain position and the subframe or time slot where the end position of the DCI transmission resource is located is the scheduling delay value; the time interval between the second time domain position and the first time domain position The interval is the first duration value.
  • the network device does not know the TA value determined by the terminal device through autonomous calculation, nor does it know the specific time domain position where the terminal device sends uplink data, the network device can determine the TA value based on the first duration value. range of values.
  • the first duration value can be understood as a maximum differential delay value, and the first duration value is not less than twice the maximum differential delay corresponding to the serving cell or service beam coverage area where the terminal device is located.
  • the maximum differential delay value can be understood as the difference between the RTT corresponding to the farthest point from the satellite and the RTT corresponding to the closest point to the satellite within a cell or a beam coverage area. For specific explanations, please refer to Part 2 of the terminology section above, and will not repeat them here.
  • the network device may indicate the size of the first duration to the terminal device through the second configuration information.
  • FIG. 13 is a schematic diagram of another time-domain position provided by the embodiment of the present application.
  • the maximum TA value determined by the terminal device through independent calculation can be K_offset, that is, the terminal device can be at the time-domain position n1+k at the earliest.
  • Send uplink data The terminal device independently calculates and determines that the minimum TA value may be K_offset-T, where T can be understood as the first duration value, that is, the terminal device can send uplink data at the time domain position n1+k+T at the latest. Therefore, the actual time domain position where the terminal device sends uplink data is within the interval formed by time domain positions n1+k to n1+k+T.
  • the time domain position n1+k may be understood as the first time domain position
  • the time domain position n1+k+T may be understood as the above-mentioned second time domain position. It can be understood that, the time interval between the first time domain position and the time domain position n1 is k; the time interval between the second time domain position and the first time domain position is the T.
  • the second time domain position may be adjusted forward by 1 or 2 time units.
  • the time domain position n1+k+T-1 can be understood as the second time domain position, and within the interval consisting of time domain positions n1+k to n1+k+T-1, the network device does not send For the downlink data of the terminal device, the terminal device does not receive the downlink data sent by the network device, so as to avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.
  • the time domain positions in this embodiment consist of a smaller interval, that is to say, the network device can send downlink data on more resources, which can improve resource utilization.
  • the downlink data sent by the network device includes data sent by the network device through downlink semi-persistent scheduling; The device sends data.
  • FIG. 14 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the above-mentioned terminal device 140 includes a receiving unit 1401 and a determining unit 1402, and the description of each unit is as follows:
  • a receiving unit 1401 configured to receive first configuration information sent by a network device, where the first configuration information is used to indicate an offset
  • a determining unit 1402 configured to determine not to receive downlink data sent by the network device between a first time domain location and a second time domain location; wherein, the first time domain location is earlier than the second time domain location, and the second time domain location A time domain position is determined according to the offset, and the second time domain position is determined according to a start time domain position of a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data.
  • the time interval between the first time domain position and the second time domain position is the offset; the second time domain position is the start time domain position of the first uplink transmission resource.
  • the first configuration information is also used to indicate a first duration value, and the first duration value is not less than twice the maximum differential delay corresponding to the serving cell or service beam coverage area where the terminal device is located; the first duration The domain position and the second time domain position are earlier than the start time domain position of the first uplink transmission resource; the time interval between the first time domain position and the start time domain position of the first uplink transmission resource is equal to the offset amount; the time interval between the second time domain position and the start time domain position of the first uplink transmission resource is equal to the difference between the offset and the first duration value.
  • the downlink data sent by the network device includes data sent by the network device through a physical downlink control channel PDCCH and/or data sent by the network device through downlink semi-persistent scheduling.
  • a receiving unit 1401 configured to receive first configuration information sent by a network device, where the first configuration information is used to indicate an offset
  • the receiving unit 1401 is further configured to receive downlink control information DCI, where the DCI is used to determine a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data;
  • a determining unit 1402 configured to determine not to receive data sent by the network device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the The second time domain position, the first time domain position is determined according to the subframe or the time slot where the end position of the DCI transmission resource is located; the second time domain position is determined according to the offset.
  • the DCI is used to indicate a scheduling delay value, and the scheduling delay value and the offset are used to determine a start time domain position of the first uplink transmission resource.
  • the first time domain position is the subframe or time slot where the end position of the DCI transmission resource is located; the time interval between the second time domain position and the first time domain position is the scheduling delay The time sum of the value and the offset.
  • the subframe or time slot where the end position of the DCI transmission resource is located is earlier than the first time domain position; the first time domain position and the subframe or time slot where the end position of the DCI transmission resource is located
  • the time interval between is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset.
  • the receiving unit 1401 is configured to receive the second configuration information sent by the network device, the second configuration information is used to indicate the first duration value, and the first duration value is not less than the maximum corresponding to the serving cell or service beam coverage area where the terminal device is located. Twice the differential delay;
  • the receiving unit 1401 is further configured to receive downlink control information DCI, where the DCI is used to schedule first uplink transmission resources, where the first uplink transmission resources are resources used by the terminal device to send uplink data;
  • a determining unit 1402 configured to determine not to receive downlink data sent by the network device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; where the end position of the DCI transmission resource is located The subframe or time slot is earlier than the first time domain position; the time interval between the first time domain position and the subframe or time slot where the end position of the transmission resource of the DCI is located is the scheduling delay value indicated by the DCI ; The interval between the second time domain position and the first time domain position is the first time length value.
  • FIG. 15 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the above-mentioned network device 150 includes a sending unit 1501 and a determining unit 1502, and the description of each unit is as follows:
  • a sending unit 1501 configured to send first configuration information to the terminal device, where the first configuration information is used to indicate an offset;
  • a determining unit 1502 configured to determine not to send downlink data for the terminal device between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position, The first time domain position is determined according to the offset, and the second time domain position is determined according to a start time domain position of a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data.
  • the time interval between the first time domain position and the second time domain position is the offset; the second time domain position is the start time domain position of the first uplink transmission resource.
  • the first configuration information is also used to indicate a first duration value, where the first duration value is not less than twice the maximum differential delay corresponding to the serving cell or serving beam coverage area where the terminal device is located;
  • the first time domain position and the second time domain position are earlier than the start time domain position of the first uplink transmission resource; the time interval between the first time domain position and the start time domain position of the first uplink transmission resource equal to the offset; the time interval between the second time domain position and the start time domain position of the first uplink transmission resource is equal to the difference between the offset and the first duration value.
  • the sending unit 1501 is specifically configured to not send the data for the terminal device through PDCCH and/or downlink semi-persistent scheduling between the first time domain position and the second time domain position.
  • a sending unit 1501 configured to send first configuration information to the terminal device, where the first configuration information is used to indicate an offset;
  • the sending unit 1501 is further configured to send downlink control information DCI to the terminal device, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;
  • a determining unit 1502 configured to determine not to send downlink data for the terminal device between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position, The first time domain position is determined according to the subframe or time slot where the end position of the DCI transmission resource is located; the second time domain position is determined according to the offset.
  • the DCI is used to indicate a scheduling delay value, and the scheduling delay value and the offset are used to determine a start time domain position of the first uplink transmission resource.
  • the first time domain position is the subframe or time slot where the end position of the DCI transmission resource is located; the time interval between the second time domain position and the first time domain position is the scheduling delay The time sum of the value and the offset.
  • the subframe or time slot where the end position of the transmission resource of the DCI is located is earlier than the first time domain position; the first time domain position and the subframe where the end position of the transmission resource of the DCI is located or
  • the time interval between time slots is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset.
  • the sending unit 1501 is specifically configured to not send the data for the terminal device between the first time domain position and the second time domain position without using downlink semi-persistent scheduling.
  • the sending unit 1501 is configured to send second configuration information to the terminal device, where the second configuration information is used to indicate a first duration value, and the first duration is not less than the maximum difference hour corresponding to the serving cell or service beam coverage area where the terminal device is located. twice as long
  • the sending unit 1501 is further configured to send downlink control information DCI to the terminal device, where the DCI is used by the terminal device to determine a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data;
  • a determining unit 1502 configured to determine not to send downlink data for the terminal device between the first time domain position and the second time domain position; the subframe or time slot where the end position of the DCI transmission resource is located earlier than the first time domain position; the time interval between the first time domain position and the subframe or time slot where the end position of the transmission resource of the DCI is located is the scheduling delay value indicated by the DCI; the second time domain position The interval between the domain position and the first time domain position is the first duration value.
  • FIG. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device 160 shown in FIG. 16 may be the above-mentioned terminal device 140 or the above-mentioned network device 150 .
  • the communication device 160 includes at least one processor 1602, configured to implement the functions of the terminal device in the method provided by the embodiment of the present application; or, configured to implement the function of the network device in the method provided in the embodiment of the present application.
  • the communication device 160 may also include a transceiver 1601 .
  • the transceiver 1601 is used to communicate with other devices/devices via transmission media.
  • the processor 1602 uses the transceiver 1601 to send and receive data and/or signaling, and is used to implement the methods in the foregoing method embodiments.
  • the communication device 160 may further include at least one memory 1603 for storing program instructions and/or data.
  • the memory 1603 is coupled to the processor 1602 .
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 1602 may cooperate with memory 1603 .
  • Processor 1602 may execute program instructions stored in memory 1603 . At least one of the at least one memory may be included in the processor.
  • the embodiment of the present application does not limit the specific connection medium among the transceiver 1601, the processor 1602, and the memory 1603.
  • the memory 1603, the processor 1602, and the transceiver 1601 are connected through a bus 1604.
  • the bus is represented by a thick line in FIG. 16, and the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 16 , but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or Execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the actions performed by the receiving unit 1401 may be performed by the transceiver 1601
  • the actions performed by the determining unit 1402 may be performed by the processor 1602 .
  • the actions performed by the sending unit 1501 may be performed by the transceiver 1601
  • the actions performed by the determining unit 1502 may be performed by the processor 1602 .
  • the present application also provides a computer-readable storage medium, where computer codes are stored in the computer-readable storage medium, and when the computer codes are run on the computer, the computer is made to execute the methods of the above-mentioned embodiments.
  • the present application also provides a computer program product, the computer program product includes computer code or computer program, and when the computer code or computer program is run on a computer, the methods in the above embodiments are executed.

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Abstract

本申请实施例提供了数据传输方法及相关装置，涉及通信技术领域，该数据传输方法包括：网络设备向终端设备发送用于指示偏移量的第一配置信息，终端设备根据第一配置信息确定在第一时域位置与第二时域位置之间不接收该网络设备发送的下行数据。其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该偏移量确定，该第二时域位置根据第一上行传输资源的开始时域位置确定，从而避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。

Description

数据传输方法及相关装置 技术领域
本申请实施例涉及通信技术领域，具体涉及数据传输方法及相关装置。
背景技术
非陆地网络(non terrestrial networks，NTN)中，终端设备利用上行传输资源向网络设备发送数据时，会根据定时提前(timing advance，TA)值进行提前发送。
由于NTN网络中终端设备与网络设备之间的传播时延很大，TA值由终端设备根据自身位置信息计算得到，所以，网络设备无法确定终端设备实际发送上行数据的具体时域位置。
由于半双工的终端设备不能同时接收和发送数据，所以，该终端设备发送的上行数据可能与网络设备发送的下行数据会在时间上发生碰撞，进而降低数据传输的可靠性。
发明内容
本申请实施例提供了数据传输方法，通过上行传输资源的开始时域位置和偏移量确定一个时间区间，在该区间内，终端设备不接收网络设备发送的下行数据，同时，网络设备不向终端设备发送下行数据，从而避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。
第一方面，本申请实施例提供了一种数据传输方法，该方法包括：
终端设备接收网络设备发送的第一配置信息，该第一配置信息用于指示偏移量；该终端设备确定在第一时域位置与第二时域位置之间不接收该网络设备发送的下行数据；其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该偏移量确定，该第二时域位置根据第一上行传输资源的开始时域位置确定，该第一上行传输资源为该终端设备用于发送上行数据的资源。
本申请实施例中，该偏移量可以理解为K_offset。可以理解地，K_offset由网络设备确定，具体地，网络设备可以通过以下方式确定K_offset：
(1)如果终端设备向网络设备反馈自身确定的TA值，那么，网络设备可以根据终端设备反馈的TA值确定该终端设备对应的K_offset值。示例性地，网络设备可以将K_offset设为一个不小于该终端设备反馈的TA的值。
(2)如果终端设备不向网络设备反馈自身确定的TA值，那么，网络设备可以根据其服务区域内某个参考点与网络设备之间的RTT值来确定。示例性地，网络设备可以将其服务区域内距离卫星最远点与卫星之间的RTT值以及公共TA值确定K_offset。示例性的，网络设备确定的K_offset等于公共TA加上其服务区域内距离网络设备最远的位置与网络设备之间的RTT值。
因而，一般情况下，网络设备确定的K_offset会大于或等于终端设备确定的TA值。
可选地，在终端设备接入网络设备并取得下行同步之后，终端设备接收网络设备发送的第一配置信息。该第一配置信息可以理解为系统信息(system information)，具体地，终端设备可以通过监听广播控制信道(broadcast control channel，BCCH)来获取系统信息，从而获取K_offset。
可以理解地，由于该第一时域位置根据K_offset确定，该第二时域位置根据第一上行传输资源的开始时域位置确定，且K_offset大于或等于该终端设备的TA值，所以终端设备发送上行数据的实际位置可以落在该第一时域位置至该第二时域位置组成的区间内。
于是，在该第一时域位置至该第二时域位置组成的区间内，终端设备不接收网络设备发送的下行数据；相应地，在该第一时域位置至该第二时域位置组成的区间内，网络设备不发送针对该终端设备的下行数据，可以避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。
在一个可能的实现方式中，该第一时域位置与该第二时域位置之间的时间间隔为该偏移量；该第二时域位置为该第一上行传输资源的开始时域位置。
在一个可能的实现方式中，该第一配置信息还用于指示第一时长值，该第一时长值值不小于该终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
该第一时域位置和该第二时域位置早于该第一上行传输资源的开始时域位置；
该第一时域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于该偏移量；该第二时域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于该偏移量与该第一时长值之间的差值。
在一个可能的实现方式中，该网络设备发送的下行数据包括该网络设备通过物理下行控制信道PDCCH发送的数据和/或该网络设备通过下行半持续调度的方式发送的数据。
第二方面，本申请实施例提供了一种数据传输方法，该方法包括：
终端设备接收网络设备发送的第一配置信息，该第一配置信息用于指示偏移量；
该终端设备接收下行控制信息DCI，该DCI用于调度第一上行传输资源，该第一上行传输资源为该终端设备用于发送上行数据的资源；
该终端设备在第一时域位置与第二时域位置之间不接收该网络设备通过下行半持续调度的方式发送的数据；其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该DCI的传输资源的结束位置所在的子帧或者时隙确定；该第二时域位置根据该偏移量确定。
可以理解的是，网络设备通过动态调度的方式给终端设备配置上行传输资源时，终端设备需要监听PDCCH来接收DCI，通过DCI来确定上行传输资源的开始时域位置。
对于终端设备和网络设备来说，PDCCH占用的子帧或时隙对两者都是已知的，网络设备向终端设备发送DCI的传输资源的结束位置所在的子帧或者时隙用于确定该第一时域位置，K_offset用于确定该第二时域位置，且K_offset大于或等于该终端设备的TA值，所以终端设备发送上行数据的实际位置可以落在该第一时域位置至该第二时域位置组成的区间内。
本申请实施例中，在该第一时域位置至该第二时域位置组成的区间内，终端设备不接收网络设备发送的下行数据；相应地，在该第一时域位置至该第二时域位置组成的区间内， 网络设备不发送针对该终端设备的下行数据，可以避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。
在一个可能的实现方式中，该DCI用于指示调度时延值，该调度时延值和该偏移量用于确定该第一上行传输资源的开始时域位置。
在一个可能的实现方式中，该第一时域位置为该DCI的传输资源的结束位置所在的子帧或者时隙；该第二时域位置与该第一时域位置之间的时间间隔为该调度时延值和该偏移量的时间和。
在一个可能的实现方式中，该DCI的传输资源的结束位置所在的子帧或者时隙早于该第一时域位置；该第一时域位置与该DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为该调度时延值；该第二时域位置与该第一时域位置之间的时间间隔为该偏移量。
在一个可能的实现方式中，该网络设备发送的下行数据包括该网络设备通过下行半持续调度的方式发送的数据。
第三方面，本申请实施例提供了一种数据传输方法，该方法包括：
终端设备接收网络设备发送的第二配置信息，该第二配置信息用于指示第一时长值，该第一时长值不小于该终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
该终端设备接收下行控制信息DCI，该DCI用于调度第一上行传输资源，该第一上行传输资源为该终端设备用于发送上行数据的资源；
该终端设备确定在第一时域位置与第二时域位置之间不接收该网络设备通过下行半持续调度的方式发送的下行数据；该DCI的传输资源的结束位置所在的子帧或者时隙早于该第一时域位置；该第一时域位置与该DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为该DCI指示的调度时延值；该第二时域位置与该第一时域位置之间的之间间隔为该第一时长值。
第四方面，本申请实施例提供了一种数据传输方法，该方法包括：
网络设备向终端设备发送第一配置信息，该第一配置信息用于指示偏移量；
该网络设备确定在第一时域位置与该第二时域位置之间不发送针对该终端设备的下行数据；
其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该偏移量确定，该第二时域位置根据第一上行传输资源的开始时域位置确定，该第一上行传输资源为该终端设备用于发送上行数据的资源。
在一个可能的实现方式中，该第一时域位置与该第二时域位置之间的时间间隔为该偏移量；该第二时域位置为该第一上行传输资源的开始时域位置。
在一个可能的实现方式中，该第一配置信息还用于指示第一时长值，该第一时长值不小于该终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
该第一时域位置和该第二时域位置早于该第一上行传输资源的开始时域位置；
该第一时域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于该偏移量；该第二时域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于该偏移量与该 第一时长值之间的差值。
在一个可能的实现方式中，该网络设备在第一时域位置与第二时域位置之间不发送针对该终端设备的下行数据，包括：
该网络设备在该第一时域位置与该第二时域位置之间，不通过物理下行控制信道PDCCH和/或下行半持续调度的方式发送针对该终端设备的数据。
第五方面，本申请实施例提供了一种数据传输方法，该方法包括：
网络设备向终端设备发送的第一配置信息，该第一配置信息用于指示偏移量；
该网络设备向该终端设备发送下行控制信息DCI，该DCI用于调度第一上行传输资源，该第一上行传输资源为该终端设备用于发送上行数据的资源；
该网络设备在第一时域位置与第二时域位置之间不通过下行半持续调度的方式发送针对该终端设备的下行数据；其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该DCI的传输资源的结束位置所在的子帧或者时隙确定；该第二时域位置根据该偏移量确定。
在一个可能的实现方式中，该DCI用于指示调度时延值，该调度时延值和该偏移量用于确定该第一上行传输资源的开始时域位置。
在一个可能的实现方式中，该第一时域位置为该DCI的传输资源的结束位置所在的子帧或者时隙；该第二时域位置与该第一时域位置之间的时间间隔为该调度时延值和该偏移量的时间和。
在一个可能的实现方式中，该DCI的传输资源的结束位置所在的子帧或者时隙早于该第一时域位置；该第一时域位置与该DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为该调度时延值；该第二时域位置与该第一时域位置之间的时间间隔为该偏移量。
在一个可能的实现方式中，该网络设备在第一时域位置与第二时域位置之间不发送针对该终端设备的下行数据，包括：
该网络设备在该第一时域位置与该第二时域位置之间，不通过下行半持续调度的方式发送针对该终端设备的数据。
第六方面，本申请实施例提供了一种数据传输方法，该方法包括：
网络设备向终端设备发送第二配置信息，该第二配置信息用于指示第一时长值，该第一时长值不小于该终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
网络设备向该终端设备发送下行控制信息DCI，该DCI用于调度第一上行传输资源，该第一上行传输资源为该终端设备用于发送上行数据的资源；
该网络设备在第一时域位置与第二时域位置之间不通过下行半持续调度的方式向该终端设备发送数据；该DCI的传输资源的结束位置所在的子帧或者时隙早于该第一时域位置；该第一时域位置与该DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为该DCI指示的调度时延值；该第二时域位置与该第一时域位置之间的之间间隔为该第一时长值。
第七方面，本申请实施例提供了一种终端设备，包括：处理器和收发器；
该收发器，用于接收信号或者发送信号；该处理器，用于执行存储器所存储的计算机执行指令，以使该终端设备执行如第一方面至第三方面或者第一方面至第三方面的任意一种可能的实施方式中的方法。
第八方面，本申请实施例提供了一种网络设备，包括：处理器和收发器；
该收发器，用于接收信号或者发送信号；该处理器，用于执行存储器所存储的计算机执行指令，以使该网络设备执行如第四方面至第六方面或者第四方面至第六方面的任意一种可能的实施方式中的方法。
第九方面，本申请实施例提供了一种数据传输系统，该数据传输系统包括终端设备和网络设备；该终端设备用于执行如第一方面或者第一方面的任意一种方法，该网络设备用于执行如第四方面或第四方面的任意一种方法；或者，该终端设备用于执行如第二方面或第二方面的任意一种方法，该网络设备用于执行如第五方面的任意一种方法；或者，该终端设备用于执行如第三方面或者第三方面的任意一种方法，该网络设备用于执行如第六方面或者第六方面的任意一种方法。
第十方面，本申请实施例提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序，当该计算机程序在一个或多个处理器上运行时，使得如第一方面至第六方面或者第一方面至第六方面的任意一种可能的实施方式中的方法被执行。
第十一方面，本申请实施例提供了一种计算机程序产品，该计算机程序产品包括程序指令，该程序指令当被处理器执行时使该处理器执行如第一方面至第六方面或者第一方面至第六方面的任意一种可能的实施方式中的方法。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图作简单的介绍。
图1是本申请实施例提供的一种通信系统的架构示意图；
图2是本申请实施例提供的一种计算最大差分时延值的模型示意图；
图3是本申请实施例提供的一种上行预配置资源的位置示意图；
图4是本申请实施例提供的一种发送上行数据的示意图；
图5是本申请实施例提供的一种时延示意图；
图6是本申请实施例提供的另一种时延示意图；
图7是本申请实施例提供的一种数据传输方法的流程示意图；
图8是本申请实施例提供的一种时域位置的示意图；
图9是本申请实施例提供的另一种时域位置的示意图；
图10是本申请实施例提供的另一种数据传输方法的流程示意图；
图11是本申请实施例提供的又一种时域位置的示意图；
图12是本申请实施例提供的又一种时域位置的示意图；
图13是本申请实施例提供的又一种时域位置的示意图；
图14是本申请实施例提供的一种终端设备的结构示意图；
图15是本申请实施例提供的一种网络设备的结构示意图；
图16是本申请实施例提供的一种通信装置的结构示意图。
具体实施方式
本申请以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一个”、“一种”、“该”、“上述”、“该”和“这一”旨在也包括复数表达形式，除非其上下文中明确地有相反指示。还应当理解，本申请中使用的术语“和/或”是指并包含一个或多个所列出项目的任何或所有可能组合。本申请的说明书、权利要求书及附图中的术语“第一”和“第二”等是用于区别不同对象，而不是用于描述特定顺序。
NTN一般指卫星或无人机系统(unmanned aircraft system，UAS)平台等进行无线频率发射的网络。相对于传统的地面网络，例如长期演进(long term evolution，LTE)网络而言，NTN可以采用卫星或高空平台(high-altitude platforms，HAP)进行布网。
适用NTN的典型场景可以包括但不限于无法建设基站的场景，例如偏远山区、沙漠、海洋以及森林中的连续覆盖；或者基站损坏的场景，例如发生灾害或基站损坏时的应急通信等。
为了更清楚地描述本申请提供的方案，下面先详细介绍本申请涉及的术语。
1、网络架构
请参阅图1，图1是本申请实施例提供的一种通信系统的架构示意图。
如图1所示，该通信系统中包括卫星、终端设备、信关站(gateway，也可以称为地面站)。卫星与终端设备之间的无线链路可以称为服务链路，卫星与信关站之间的无线链路可以称为反馈链路，卫星与卫星之间可以存在用于提供数据回程的星间链路。
一般情况下，该通信系统的一个或几个信关站需要连接到公共数据网络(public data network，PDN)，如图1中的网络。
示例性地，终端设备还可以称为用户设备(user equipment，UE)、终端、接入终端、用户单元、用户站、移动站、远方站、远程终端、移动设备、用户终端、无线通信设备、用户代理或用户装置。终端设备可以是移动站(mobile station，MS)、用户单元(subscriber unit)、无人机、物联网(internet of things，IoT)设备、无线局域网(wireless local areanetworks，WLAN)中的站点(station，ST)、蜂窝电话(cellular phone)、智能电话(smartphone)、无绳电话、无线数据卡、平板型电脑、会话启动协议(session initiationprotocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)设备、膝上型电脑(laptop computer)、机器类型通信(machine type communication，MTC)终端、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备(也可以称为穿戴式智能设备)。终端设备还可以为下一代通信系统中的终端设备，例如，5G系统中的终端设备或者未来演进的公共陆地移动网(public land mobile network，PLMN)中的终端设备，新无线(new radio，NR)系统中的终端设备等。在非陆地网络中，一个小区可以包括一个或者多个波束。如图1所示，一个小区包括多个波束。
在一些实施例中，通信系统中的基站可以设在陆地，例如图1中的信关站可以具备基站的功能。此时，卫星将作为终端设备与信关站之间的中继，通过服务链路接收终端设备 发送的数据，再将该数据转发给地面的信关站。
在另一些实施例中，通信系统中的基站也可以设在卫星上，例如图1中的卫星可以具备基站的功能。此时，具备基站功能的卫星可以认为是演进型基站(evolutional NodeB，eNB)或5G基站(gNB)中的一种。
本申请实施例中，终端设备可以和网络设备进行通信，网络设备可以理解为能够进行数据处理和网络通信的设备。示例性地，网络设备可以包括基站(例如，eNB、gNB等)或网络的接入设备等，本申请对此不作限定。为便于描述，下文中以网络设备为具备基站功能的卫星为例对本申请所涉及的方法作示例性说明。
2、最大差分时延值
在非陆地网络中，小区或波束覆盖范围内的不同位置与网络设备之间的传播时延不同。
示例性地，本申请实施例中，最大差分时延值可以理解为某小区或者某波束覆盖范围内，距网络设备最远的位置对应的传播时延与距网络设备最近的位置对应的传播时延之差。
示例性地，如果是针对某个小区的覆盖范围计算的最大差分时延值，则该最大差分时延值为小区级别的最大差分时延值。可理解，不同的小区对应的最大差分时延值可以相同也可以不同。
示例性地，如果是针对某个波束的覆盖范围计算的最大差分时延值，则该最大差分时延值为波束级别的最大差分时延值。可理解，不同的波束覆盖范围对应的最大差分时延值可以相同也可以不同。
具体地，图2是本申请实施例提供的一种计算最大差分时延值的模型示意图，图2所示的示意图以波束的覆盖区域为例子。如图2所示，d1为网络设备与波束覆盖区域之间的最近距离，d2为网络设备与波束覆盖区域之间的最远距离。可以理解的是，网络设备可以通过勾股定理计算出一个小区或者波束覆盖区域对应的最大差分时延值。
在NTN网络中，由于网络设备距离地面比较远，且网络设备形成的小区或波束覆盖范围比较大，导致在某小区或某波束覆盖范围内存在较大的差分时延。例如，同步网络设备最大的差分时延值的2倍是20.6毫秒。
3、调度
示例性的，本申请涉及的调度可以包括动态调度和下行半持续调度(semi-persistent scheduling，SPS)。
本申请实施例中，动态调度可以理解为网络设备在每个传输时间间隔(transport time interval，TTI)中做一个调度决定，并将调度信息通过控制信令通知被调度的所有终端设备。
本申请实施例中，下行半持续调度也可以称为半永久性调度或半静态调度。与动态调度中每个TTI为终端设备分配一次无线资源不同，SPS允许半持续配置无线资源，并将该资源周期性地分配给某个特定的终端设备。
具体地，网络设备在某个TTI使用小区无线网络临时标识(cell-radio network temporary identifier，C-RNTI)加扰的物理下行控制信道(physical downlink control channel，PDCCH)指定某个终端设备所使用的无线资源(这里将其称为SPS资源)，也就是说，网络设备通过PDCCH通知终端设备何时开始半持续调度。每过一个周期(可理解为半持续调度的周期)，终端设备都可以使用该SPS资源来接收或发送数据。网络设备无需在该子帧或时隙(这里 将其称为SPS子帧)下发PDCCH来指定分配的资源，从而节省了控制信令PDCCH的传输开销。
4、预配置资源传输
在NTN网络中，预配置资源传输方式可以包括上行预配置资源传输方式和下行预配置资源传输方式。
示例性地，本申请实施例涉及的预配置资源传输方式包括上行预配置资源传输方式。
本申请实施例中，上行预配置资源传输可以称为配置授权(configured grant)上行传输，包括类型1配置授权(configured grant type 1)与类型2配置授权(configured grant type 2)。
对于configured grant type 1，终端设备在接收到configured grant type 1的高层配置时，该终端设备就可以根据该configured grant type 1的高层配置确定上行预配置资源的位置，并利用该上行预配置资源发送上行数据。
示例性地，图3是本申请实施例提供的一种上行预配置资源的位置示意图。如图3所示，上行预配置资源是周期的。
对于configured grant type 2，在终端设备接收到configured grant type 2的高层配置后，终端设备还需要接收网络设备下发的下行控制信息(downlink control information，DCI)，根据该下行控制信息确定高层配置的configured grant type 2的资源是否可用。
5、偏移量K_offset和TA值
为了保证终端设备与网络设备之间的上行链路时间同步，引入了TA值。NTN网络中，终端设备在发送上行数据时会根据TA值进行提前发送。
示例性地，图4是本申请实施例提供的一种发送上行数据的示意图。如图4所示，网络通过高层信令给终端设备配置了周期性的上行传输资源(可以理解为configure grant type 1或configure grant type 2)，终端设备在利用该上行传输资源发送上行数据时，需要提前发送(提前量即为终端设备所确定的TA值)。也就是说，终端设备实际发送上行数据的时域位置相比于网络配置的上行传输资源时域位置要往前TA个时间单位。
由于在NTN网络中，网络设备与终端设备之间的距离一般都是几百甚至几千千米，所以网络设备与终端设备之间的传输延迟显著增大，导致NTN网络中的TA也很大。
示例性地，请参阅图5，图5是本申请实施例提供的一种时延示意图。如图5所示，对于网络设备来说，下行子帧与上行子帧是对齐的。网络设备与终端设备(UE)之间的传输时延为时延A。TA值可以理解为终端设备接收到下行子帧的起始时域位置与传输上行子帧的起始时域位置之间的差值。
正是由于NTN网络中的TA很大，为了保证终端设备有足够的时间去提前发送上行数据，引入了偏置值K_offset。
示例性地，图6是本申请实施例提供的另一种时延示意图，PDCCH调度PUSCH的调度时延增强为K2+K_offset。也就是说，在PDCCH调度PUSCH的过程中，PDCCH中的下行控制信息会向终端设备指示调度时延值K2和偏置值K_offset。然后，终端设备根据指示的K2值和偏置值K_offset来共同确定PUSCH的发送资源位置。这样就可以保证PDCCH接收时刻与PUSCH发送时刻之间必须有足够大的时间间隔让终端设备进行提前发送。
在NTN网络中，每个终端设备的TA值需要根据公共TA(common TA)和终端设备 级别的TA来共同确定。示例性的，一个终端设备的TA值等于公共TA加上该终端设备级别的TA。
示例性地，公共TA可以理解为网络设备与某个参考点之间的距离确定的TA值，该参考点的位置可以是网络设备，可以是信关站，也可以是服务链路或者反馈链路中的任何位置。在一些实施例中，公共TA可以理解为参考点与网络设备之间的来回传播时延(round trip time，RTT)。
示例性地，终端设备级别的TA可以理解为终端设备根据自身位置信息和星历信息自主计算的TA值。所谓终端设备级别的TA，即不同的终端设备各自计算各自的TA值，由于不同的终端设备所处的位置与网络设备之间的距离不同，所以不同的终端设备计算的TA值各不相同。在一些实施例中，终端设备级别的TA可以为该终端设备与网络设备之间的来回传播时延。
可以理解，正是由于终端设备向网络设备发送上行数据时会根据TA值进行提前发送，而每个终端设备的TA值由自身计算得来，所以网络设备无法知晓终端设备实际发送上行数据的具体时域位置。
对于半双工、频分双工(frequency division duplex，FDD)的终端设备来说，该终端设备不能同时接收和发送数据。该终端设备发送的上行数据可能与网络设备发送的下行数据会在时间上发生碰撞，进而降低数据传输的可靠性。
在一些实施例中，终端设备可以通过向网络设备传输信令来指示自身确定的TA值，使得网络设备可以避开终端设备发送上行数据的时刻，从而避免上行数据与下行数据之间的碰撞。但是，终端设备每次更新TA值都向网络设备发送信令告知网络设备新的TA值，信令开销大。
针对上述问题，本申请实施例提供了数据传输方法，根据偏移量和上行传输资源的开始时域位置确定一个时间区间，在该时间区间内，终端设备不接收网络设备发送的下行数据，同时，网络设备不向终端设备发送下行数据，从而避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而避免资源碰撞，提高数据传输的可靠性。为了便于理解，接下来将网络设备和终端设备结合起来对本申请提供的数据传输方法进行解释。
首先，介绍网络设备为终端设备配置周期性的上行传输资源情况下的数据传输方法。请参阅图7，图7是本申请实施例提供的一种数据传输方法的流程示意图，其中，该方法包括：
701：网络设备向终端设备发送第一配置信息，该第一配置信息用于指示偏移量。相应的，终端设备接收网络设备发送的第一配置信息。
本申请实施例中，该偏移量可以理解为术语中第5部分的偏移量K_offset。一般来说，K_offset的单位可以是子帧或时隙。为了便于描述，接下来以K_offset为例对本申请提供的方法进行解释。
可以理解地，K_offset由网络设备确定，具体地，网络设备可以通过以下方式确定K_offset：
(1)如果终端设备向网络设备反馈自身确定的TA值，那么，网络设备可以根据终端 设备反馈的TA值确定该终端设备对应的K_offset值。示例性地，网络设备可以将K_offset设为一个不小于该终端设备反馈的TA的值。
(2)如果终端设备不向网络设备反馈自身确定的TA值，那么，网络设备可以根据其服务区域内某个参考点与网络设备之间的RTT值来确定。示例性地，网络设备可以将其服务区域内距离网络设备最远的位置与网络设备之间的RTT值以及公共TA值确定K_offset。示例性的，网络设备确定的K_offset等于公共TA加上其服务区域内距离网络设备最远的位置与网络设备之间的RTT值。
因而，一般情况下，网络设备确定的K_offset会大于或等于终端设备确定的TA值。
步骤701在具体实现时，终端设备可以在接入网络设备并取得下行同步之后，接收网络设备发送的第一配置信息。第一配置信息示例性的可以为系统信息(system information)，具体地，终端设备可以通过监听广播控制信道(broadcast control channel，BCCH)来获取系统信息，从而获取K_offset。
702：网络设备确定在第一时域位置和第二时域位置之间不发送针对该终端设备的下行数据。相应地，终端设备确定在第一时域位置与第二时域位置之间不接收网络设备发送的下行数据；其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该偏移量确定，该第二时域位置根据第一上行传输资源的开始时域位置确定，该第一上行传输资源为该终端设备用于发送上行数据的资源。
可以理解地，终端设备向网络设备发送上行数据之前，必须确定网络设备为其配置的上行传输资源的时域位置。本申请实施例中，该第一上行传输资源可以理解为网络设备为终端设备配置的一个上行传输资源。
可以理解地，由于该第一时域位置根据K_offset确定，该第二时域位置根据第一上行传输资源的开始时域位置确定，且K_offset大于或等于该终端设备确定的TA值，因此终端设备发送上行数据的实际位置可以落在该第一时域位置至该第二时域位置组成的区间内。
于是，在该第一时域位置至该第二时域位置组成的区间内，终端设备不接收网络设备发送的下行数据；相应地，在该第一时域位置至该第二时域位置组成的区间内，网络设备不发送针对该终端设备的下行数据，可以避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。
接下来对终端设备不接收的下行数据和网络设备不发送的下行数据进行解释。
可以理解地，本申请实施例涉及的网络设备发送下行数据的方式包括：网络设备通过动态调度的方式和通过下行半持续调度的方式向终端设备发送下行数据。
(1)针对动态调度方式，示例性地，网络设备可以通过DCI动态调度物理下行共享信道(physical downlink shared channel，PDSCH)来下发数据。可以理解的是，网络设备通过动态调度的方式下发数据时，可以保证不落在该第一时域位置至该第二时域位置组成的区间内。
(2)针对半持续调度方式，示例性地，网络设备可以利用下行传输资源周期性地向终端设备发送下行数据。可以理解的是，周期性的下行传输资源会存在一个或者多个下行传输资源会落在该第一时域位置至该第二时域位置组成的区间内。在落在该第一时域位置至该第二时域位置组成的区间内的下行传输资源上，网络设备不发送下行数据。
另外，终端设备监听PDCCH来接收DCI也是通过周期性的方式来实现的，周期性地PDCCH监听时机会存在一个或者多个PDCCH监听时机会落在该第一时域位置至该第二时域位置组成的区间内。在落在该第一时域位置至该第二时域位置组成的区间内的PDCCH监听时机上，终端设备不监听PDCCH。
本实施例中，上述终端设备不接收网络设备发送的下行数据可以理解为终端设备不接收网络设备通过下行半持续调度的方式下发的数据和通过PDCCH发送的下行控制信息。
相应地，网络设备不发送针对该终端设备的下行数据可以理解为网络设备不通过PDCCH和/或下行半持续调度的方式发送针对该终端设备的数据。
在一些实施例中，该第一时域位置与该第二时域位置之间的时间间隔为该偏移量；该第二时域位置为该第一上行传输资源的开始时域位置。
示例性地，请参阅图8，图8是本申请实施例提供的一种时域位置的示意图，图8中每个带阴影的长方形都可以理解为上述第一上行传输资源。如图8所示，该第一上行传输资源是周期的，可以称为上行预配置资源(UL configure grant)。也就是说，终端设备可以利用该上行预配置资源周期性地向网络设备发送上行数据。
图8中示出了3个UL configure grant。为了便于理解，接下来以第1个UL configure grant为例对本申请实施例提供的方法进行说明，后续将第1个UL Configure grant称为第一UL configure grant。
终端设备确定K_offset和第一UL configure grant的开始时域位置。示例性地，终端设备可以通过接收网络设备发送的系统信息来确定K_offset和第一UL configure grant的开始时域位置。
本实施例中，第一UL configure grant的开始时域位置，即图8中的时域位置n，可以理解为上述第二时域位置。第一UL configure grant的开始时域位置往前K_offset个时间单位对应的时域位置，即图8中的时域位置n-K_offset，可以理解为上述第一时域位置。
终端设备在时域位置n-K_offset至n组成的区间内不接收网络设备通过下行半持续调度的方式下发的数据和通过PDCCH发送的下行控制信息；相应地，网络设备在时域位置n-K_offset至n组成的区间内不通过PDCCH和/或下行半持续调度的方式发送针对该终端设备的数据。
可以理解的是，K_offset为网络设备侧配置的参数。一般情况下，K_offset大于或等于终端设备确定的TA值。也就是说，终端设备根据TA值提前发送上行数据的时刻一定会落在时域位置n-K_offset至n之间。
所以，在时域位置n-K_offset至n组成的区间内，网络设备不发送针对该终端设备的下行数据，终端设备也不接收网络设备发送的下行数据，可以避免终端设备上发数据的时刻与网络设备下发数据的时刻相同，从而避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。
在另一些实施例中，该第一配置信息还用于指示第一时长值，该第一时长值不小于终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
该第一时域位置和该第二时域位置早于该第一上行传输资源的开始时域位置；该第一时域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于该偏移量；该第二时 域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于该偏移量与该第一时长值之间的差值。
可以理解的是，网络设备虽然不知道终端设备通过自主计算确定的TA值，也不知道终端设备发送上行数据的具体时域位置，但是，网路设备可以根据第一时长值确定该终端设备的TA值的取值范围。
本实施例中，第一时长值可以理解为由最大差分时延值确定的值，且该第一时长值不小于终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的2倍。最大差分时延值可以理解为一个小区或者一个波束覆盖区域内，距离卫星最远点对应的RTT与距离卫星最近点对应的RTT之差。对最大差分时延值的具体解释可参阅前文术语部分的第2部分，这里不再赘述。
示例性地，网络设备确定该第一时长值后，可以通过该第一配置信息向终端设备指示该第一时长值的大小。需要说明的是，第一时长值和K_offset也可以分开指示，本申请不作限制。
示例性地，图9是本申请实施例提供的另一种时域位置的示意图。可以理解地，终端设备通过自主计算确定的TA值最大可以为K_offset，也就是说，终端设备最早可以在时域位置n-K_offset发送上行数据。终端设备通过自主计算确定的TA值最小可以为K_offset-T，其中，T可以理解为该第一时长值，也就是说，终端设备最晚可以在时域位置n-K_offset+T发送上行数据。所以，终端设备发送上行数据的实际开始位置会落在n-K_offset至n-K_offset+T组成的区间内。
本实施例中，时域位置n-K_offset可以理解为上述第一时域位置，时域位置n-K_offset+T可以理解为上述第二时域位置。可以理解的是，如图9所示，该第一时域位置与该第一上行传输资源的开始时域位置(即图9中的n)之间的时间间隔为K_offset。该第二时域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于K_offset-T。
本实施例中，在时域位置n-K_offset至n-K_offset+T组成的区间内，终端设备不接收网络设备通过下行半持续调度的方式下发的数据和通过PDCCH发送的下行控制信息；相应地，网络设备不通过PDCCH和/或下行半持续调度的方式发送针对该终端设备的数据，避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。同时，相比于前一个实施例，本实施例中的时域位置组成的区间更小，也就是说，网络设备可以在更多的资源上发送下行数据，可以提高资源利用率。
以上数据传输方法适用网络设备为终端设备配置周期性的上行传输资源的情况，接下介绍网络设备通过动态调度的方式为终端设备配置上行传输资源情况下的数据传输方法。
图10是本申请实施例提供的另一种数据传输方法的流程示意图，其中，该方法包括：
1001：网络设备向终端设备发送第一配置信息，该第一配置信息用于指示偏移量。相应地，终端设备接收网络设备发送的第一配置信息。
具体可参阅步骤701的描述，这里不再赘述。
1002：网络设备向终端设备发送DCI，该DCI用于调度第一上行传输资源，该第一上行传输资源为该终端设备用于发送上行数据的资源。相应地，终端设备接收该DCI。
可以理解的是，网络设备通过动态调度的方式给终端设备配置上行传输资源时，终端设备需要监听PDCCH来接收DCI，通过DCI来确定上行传输资源的开始时域位置。
在一些实施例中，该DCI用于指示调度时延值，该调度时延值和该偏移量用于确定该第一上行传输资源的开始时域位置。
示例性地，终端设备接收到网络设备发送的DCI中的上行授权信息后，会根据该上行授权信息指示的调度时延值和K_offset确定上行传输资源的开始时域位置。一般情况下，终端设备发送上行数据的时刻与该DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为该调度时延值和K_offset的时间和。
为便于描述，后续将以该调度时延值为k进行说明。
1003：网络设备确定在第一时域位置与第二时域位置之间不通过下行半持续调度的方式发送针对该终端设备的数据；相应地，终端设备在第一时域位置与第二时域位置之间不接收该网络设备发送的下行数据；其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该DCI的传输资源的结束位置所在的子帧或者时隙确定；该第二时域位置根据该偏移量确定。
可以理解的是，对于终端设备和网络设备来说，PDCCH占用的子帧或时隙对两者都是已知的，网络设备向终端设备发送DCI的传输资源的结束位置所在的子帧或者时隙用于确定该第一时域位置，K_offset用于确定该第二时域位置，且K_offset大于或等于该终端设备的TA值，所以终端设备发送上行数据的实际位置可以落在该第一时域位置至该第二时域位置组成的区间内。
所以，在该第一时域位置至该第二时域位置组成的区间内，终端设备不接收网络设备发送的下行数据；相应地，在该第一时域位置至该第二时域位置组成的区间内，网络设备不发送针对该终端设备的下行数据，可以避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。
本实施例中，网络设备发送的下行数据包括网络设备通过下行半持续调度的方式发送的数据；网络设备不发送针对该终端设备的下行数据包括网络设备不通过下行半持续调度的方式向该终端设备发送数据。
在又一些实施例中，该第一时域位置为该DCI的传输资源的结束位置所在的子帧或者时隙；该第二时域位置与该第一时域位置之间的时间间隔为该调度时延值和该偏移量的时间和。
示例性地，请参阅图11，图11是本申请实施例提供的又一种时域位置的示意图。
如图11所示，终端设备接收网络设备发送的DCI，该DCI的传输资源的结束位置所在的子帧或者时隙为n1，根据该DCI指示的k和K_offset可以确定上行传输资源的开始时域位置，即图11中PUSCH的开始位置。
如图11所示，终端设备接收的DCI的传输资源的结束位置所在的子帧或者时隙与PUSCH的开始时域位置之间的时间间隔为k+K_offset。
本实施例中，终端设备确定时域位置n1，该时域位置n1可以理解为该第一时域位置；该时域位置n1往后k+K_offset个时间单位对应的时域位置，即图11中的n1+k+K_offset位置，可以理解为该第二时域位置。
在n1至n1+k+K_offset组成的区间内，终端设备不接收网络设备发送的下行数据；相应地，网络设备不发送针对该终端设备的下行数据。
本实施例中，网络设备发送的下行数据包括网络设备通过下行半持续调度的方式发送的数据；网络设备不发送针对该终端设备的下行数据包括网络设备不通过下行半持续调度的方式向该终端设备发送数据。
可以理解的是，终端设备根据自主计算的TA值提前发送上行数据的时域位置一定会落在时域位置n1至n1+k+K_offset之间。所以，在n1至n1+k+K_offset组成的区间内，网络设备不发送针对该终端设备的下行数据，终端设备也不接收网络设备发送的下行数据，可以避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。
可选地，可以将该第二时域位置往前调整1个或2个时间单位。示例性地，可以将n1+k+K_offset-1作为该第二时域位置，即在n1至n1+k+K_offset-1组成的区间内，网络设备不发送针对该终端设备的下行数据，终端设备也不接收网络设备发送的下行数据。
在又一些实施例中，该DCI的传输资源的结束位置所在的子帧或者时隙早于该第一时域位置；该第一时域位置与该DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为该调度时延值；该第二时域位置与该第一时域位置之间的时间间隔为该偏移量。
示例性地，请参阅图12，图12是本申请实施例提供的又一种时域位置的示意图。
本实施例中，终端设备确定接收DCI的传输资源的结束位置所在的子帧或者时隙，即时域位置n1，再根据k可以确定时域位置n1+k，该时域位置n1+k可以理解为该第一时域位置。
进一步地，终端设备根据k和K_offset可以确定时域位置n1+k+K_offset，该时域位置n1+k+K_offset时刻可以理解为该第二时域位置。可以理解的是，该第一时域位置与时域位置n1之间的时间间隔等于k，该时域位置n1+k+K_offset时刻与该第一时域位置之间的时间间隔等于K_offset。
可以理解的是，K_offset为网络设备侧配置的参数。一般情况下，偏移量K_offset大于或等于终端设备确定的TA值。也就是说，终端设备根据TA值提前发送上行数据的时刻一定会落在n1+k至n1+k+K_offset之间。
可选地，可以将该第二时域位置往前调整1个或2个时间单位。示例性地，时域位置n1+k+K_offset-1可以理解为该第二时域位置，在n1+k至n1+k+K_offset-1组成的区间内，网络设备不发送针对该终端设备的下行数据，终端设备也不接收网络设备发送的下行数据，可以避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。
本实施例中，网络设备发送的下行数据包括网络设备通过下行半持续调度的方式发送的数据；网络设备不发送针对该终端设备的下行数据包括网络设备不通过下行半持续调度的方式向该终端设备发送数据。
在又一些实施例中，终端设备接收网络设备发送的第二配置信息，该第二配置信息用于指示第一时长值，该第一时长值不小于终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
终端设备接收DCI，该DCI用于调度第一上行传输资源，该第一上行传输资源为该终端设备用于发送上行数据的资源；
终端设备在第一时域位置与第二时域位置之间不接收网络设备发送的下行数据；该DCI的传输资源的结束位置所在的子帧或者时隙早于该第一时域位置；该第一时域位置与该DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为该调度时延值；该第二时域位置与该第一时域位置之间的之间间隔为该第一时长值。
可以理解的是，网络设备虽然不知道终端设备通过自主计算确定的TA值，也不知道终端设备发送上行数据的具体时域位置，但是，网路设备可以通过第一时长值确定TA值的取值范围。
本实施例中，第一时长值可以理解为最大差分时延值，该第一时长值不小于终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的2倍。最大差分时延值可以理解为一个小区或者一个波束覆盖区域内，距离卫星最远点对应的RTT与距离卫星最近点对应的RTT之差。具体解释可参阅前文术语部分的第2部分，这里不再赘述。
示例性地，网络设备确定该第一时长值后，可以通过该第二配置信息向终端设备指示该第一时长的大小。
示例性地，图13是本申请实施例提供的又一种时域位置的示意图，终端设备自主计算确定的TA值最大可以为K_offset，也就是说，终端设备最早可以在时域位置n1+k发送上行数据。终端设备自主计算确定TA值最小可以为K_offset-T，其中，T可以理解为该第一时长值，也就是说，终端设备最晚可以在时域位置n1+k+T发送上行数据。所以，终端设备发送上行数据的实际时域位置在时域位置n1+k至n1+k+T组成的区间内。
本实施例中，如图13所示，时域位置n1+k可以理解为该第一时域位置，时域位置n1+k+T可以理解为上述第二时域位置。可以理解的是，该第一时域位置与时域位置n1之间的时间间隔为k；该第二时域位置与该第一时域位置之间的时间间隔为该T。
可选地，可以将该第二时域位置往前调整1个或2个时间单位。示例性地，可以将时域位置n1+k+T-1理解为该第二时域位置，在时域位置n1+k至n1+k+T-1组成的区间内，网络设备不发送针对该终端设备的下行数据，终端设备也不接收网络设备发送的下行数据，避免终端设备发送的上行数据与网络设备发送的下行数据在时间上发生碰撞，进而提高数据传输的可靠性。同时，相比于前一个实施例，本实施例中的时域位置组成的区间更小，也就是说，网络设备可以在更多的资源上发送下行数据，可以提高资源利用率。
本实施例中，网络设备发送的下行数据包括网络设备通过下行半持续调度的方式发送的数据；网络设备不发送针对该终端设备的下行数据包括网络设备不通过下行半持续调度的方式向该终端设备发送数据。
上述详细阐述了本申请实施例的方法，下面阐述本申请实施例提供的装置。
请参阅图14，图14是本申请实施例提供的一种终端设备的结构示意图。如图14所示，上述终端设备140包括接收单元1401和确定单元1402，各个单元的描述如下：
在第一种实现方式中：
接收单元1401，用于接收网络设备发送的第一配置信息，该第一配置信息用于指示偏移量；
确定单元1402，用于确定在第一时域位置与第二时域位置之间不接收该网络设备发送的下行数据；其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该偏移量确定，该第二时域位置根据第一上行传输资源的开始时域位置确定，该第一上行传输资源为该终端设备用于发送上行数据的资源。
可选地，该第一时域位置与该第二时域位置之间的时间间隔为该偏移量；该第二时域位置为该第一上行传输资源的开始时域位置。
可选地，该第一配置信息还用于指示第一时长值，该第一时长值不小于该终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；该第一时域位置和该第二时域位置早于该第一上行传输资源的开始时域位置；该第一时域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于该偏移量；该第二时域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于该偏移量与该第一时长值之间的差值。
可选地，该网络设备发送的下行数据包括该网络设备通过物理下行控制信道PDCCH发送的数据和/或该网络设备通过下行半持续调度的方式发送的数据。
在第二种实现方式中：
接收单元1401，用于接收网络设备发送的第一配置信息，该第一配置信息用于指示偏移量；
接收单元1401，还用于接收下行控制信息DCI，该DCI用于确定第一上行传输资源，该第一上行传输资源为该终端设备用于发送上行数据的资源；
确定单元1402，用于确定在该第一时域位置与该第二时域位置之间不接收该网络设备通过下行半持续调度的方式发送的数据；其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该DCI的传输资源的结束位置所在的子帧或者时隙确定；该第二时域位置根据该偏移量确定。
可选地，该DCI用于指示调度时延值，该调度时延值和该偏移量用于确定该第一上行传输资源的开始时域位置。
可选地，该第一时域位置为该DCI的传输资源的结束位置所在的子帧或者时隙；该第二时域位置与该第一时域位置之间的时间间隔为该调度时延值和该偏移量的时间和。
可选地，该DCI的传输资源的结束位置所在的子帧或者时隙早于该第一时域位置；该第一时域位置与该DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为该调度时延值；该第二时域位置与该第一时域位置之间的时间间隔为该偏移量。
在第三种实现方式中：
接收单元1401，用于接收网络设备发送的第二配置信息，该第二配置信息用于指示第一时长值，该第一时长值不小于该终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
接收单元1401，还用于接收下行控制信息DCI，该DCI用于调度第一上行传输资源，该第一上行传输资源为该终端设备用于发送上行数据的资源；
确定单元1402，用于确定在该第一时域位置与该第二时域位置之间不接收该网络设备通过下行半持续调度的方式发送的下行数据；该DCI的传输资源的结束位置所在的子帧或者时隙早于该第一时域位置；该第一时域位置与该DCI的传输资源的结束位置所在的子帧 或者时隙之间的时间间隔为该DCI指示的调度时延值；该第二时域位置与该第一时域位置之间的之间间隔为该第一时长值。
请参阅图15，图15是本申请实施例提供的一种网络设备的结构示意图。如图15所示，上述网络设备150包括发送单元1501和确定单元1502，各个单元的描述如下：
在第一种实现方式中：
发送单元1501，用于向终端设备发送第一配置信息，该第一配置信息用于指示偏移量；
确定单元1502，用于确定在该第一时域位置与该第二时域位置之间不发送针对该终端设备的下行数据；其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该偏移量确定，该第二时域位置根据第一上行传输资源的开始时域位置确定，该第一上行传输资源为该终端设备用于发送上行数据的资源。
可选地，该第一时域位置与该第二时域位置之间的时间间隔为该偏移量；该第二时域位置为该第一上行传输资源的开始时域位置。
可选地，该第一配置信息还用于指示第一时长值，该第一时长值不小于该终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
该第一时域位置和该第二时域位置早于该第一上行传输资源的开始时域位置；该第一时域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于该偏移量；该第二时域位置与该第一上行传输资源的开始时域位置之间的时间间隔等于该偏移量与该第一时长值之间的差值。
可选地，发送单元1501，具体用于在该第一时域位置与该第二时域位置之间，不通过PDCCH和/或下行半持续调度的方式发送针对该终端设备的数据。
在第二种实现方式中：
发送单元1501，用于向终端设备发送的第一配置信息，该第一配置信息用于指示偏移量；
发送单元1501，还用于向该终端设备发送下行控制信息DCI，该DCI用于调度第一上行传输资源，该第一上行传输资源为该终端设备用于发送上行数据的资源；
确定单元1502，用于确定在该第一时域位置与该第二时域位置之间不发送针对该终端设备的下行数据；其中，该第一时域位置早于该第二时域位置，该第一时域位置根据该DCI的传输资源的结束位置所在的子帧或者时隙确定；该第二时域位置根据该偏移量确定。
可选地，该DCI用于指示调度时延值，该调度时延值和该偏移量用于确定该第一上行传输资源的开始时域位置。
可选地，该第一时域位置为该DCI的传输资源的结束位置所在的子帧或者时隙；该第二时域位置与该第一时域位置之间的时间间隔为该调度时延值和该偏移量的时间和。
可选地，在于，该DCI的传输资源的结束位置所在的子帧或者时隙早于该第一时域位置；该第一时域位置与该DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为该调度时延值；该第二时域位置与该第一时域位置之间的时间间隔为该偏移量。
可选地，发送单元1501，具体用于在该第一时域位置与该第二时域位置之间，不通过下行半持续调度的方式发送针对该终端设备的数据。
在第三种实现方式中：
发送单元1501，用于向终端设备发送第二配置信息，该第二配置信息用于指示第一时长值，该第一时长不小于该终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
发送单元1501，还用于向该终端设备发送下行控制信息DCI，该DCI用于该终端设备确定第一上行传输资源，该第一上行传输资源为该终端设备用于发送上行数据的资源；
确定单元1502，用于确定用于在该第一时域位置与该第二时域位置之间不发送针对该终端设备的下行数据；该DCI的传输资源的结束位置所在的子帧或者时隙早于该第一时域位置；该第一时域位置与该DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为该DCI指示的调度时延值；该第二时域位置与该第一时域位置之间的之间间隔为该第一时长值。
请参阅图16，图16是本申请实施例提供的一种通信装置的结构示意图。图16所示的通信装置160可以是上述终端设备140，也可以是上述网络设备150。
如图16所示。该通信装置160包括至少一个处理器1602，用于实现本申请实施例提供的方法中终端设备的功能；或者，用于实现本申请实施例提供的方法中网络设备的功能。该通信装置160还可以包括收发器1601。收发器1601用于通过传输介质和其他设备/装置进行通信。处理器1602利用收发器1601收发数据和/或信令，并用于实现上述方法实施例中的方法。
可选地，通信装置160还可以包括至少一个存储器1603，用于存储程序指令和/或数据。存储器1603和处理器1602耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器1602可能和存储器1603协同操作。处理器1602可能执行存储器1603中存储的程序指令。该至少一个存储器中的至少一个可以包括于处理器中。
本申请实施例中不限定上述收发器1601、处理器1602以及存储器1603之间的具体连接介质。本申请实施例在图16中以存储器1603、处理器1602以及收发器1601之间通过总线1604连接，总线在图16中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图16中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
可理解，在通信装置160为上述终端设备140时，接收单元1401执行的动作可以由收发器1601执行，确定单元1402执行的动作可以由处理器1602执行。或者，在通信装置160为上述网络设备150时，发送单元1501执行的动作可以由收发器1601执行，确定单元1502执行的动作可以由处理器1602执行。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机代码，当计算机代码在计算机上运行时，使得计算机执行上述实施例的方法。
本申请还提供一种计算机程序产品，该计算机程序产品包括计算机代码或计算机程序，当该计算机代码或计算机程序在计算机上运行时，使得上述实施例中的方法被执行。
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。因此，本申请的保护范围应以上述权利要求的保护范围为准。

Claims (24)

  1. 一种数据传输方法，其特征在于，所述方法包括：
    终端设备接收网络设备发送的第一配置信息，所述第一配置信息用于指示偏移量；
    所述终端设备确定在第一时域位置与第二时域位置之间不接收所述网络设备发送的下行数据；
    其中，所述第一时域位置早于所述第二时域位置，所述第一时域位置根据所述偏移量确定，所述第二时域位置根据第一上行传输资源的开始时域位置确定，所述第一上行传输资源为所述终端设备用于发送上行数据的资源。
  2. 根据权利要求1所述的方法，其特征在于，所述第一时域位置与所述第二时域位置之间的时间间隔为所述偏移量；所述第二时域位置为所述第一上行传输资源的开始时域位置。
  3. 根据权利要求1所述的方法，其特征在于，所述第一配置信息还用于指示第一时长值，所述第一时长值不小于所述终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
    所述第一时域位置和所述第二时域位置早于所述第一上行传输资源的开始时域位置；
    所述第一时域位置与所述第一上行传输资源的开始时域位置之间的时间间隔等于所述偏移量；所述第二时域位置与所述第一上行传输资源的开始时域位置之间的时间间隔等于所述偏移量与所述第一时长值之间的差值。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述网络设备发送的下行数据包括所述网络设备通过物理下行控制信道PDCCH发送的数据和/或所述网络设备通过下行半持续调度的方式发送的数据。
  5. 一种数据传输方法，其特征在于，所述方法包括：
    终端设备接收网络设备发送的第一配置信息，所述第一配置信息用于指示偏移量；
    所述终端设备接收下行控制信息DCI，所述DCI用于调度第一上行传输资源，所述第一上行传输资源为所述终端设备用于发送上行数据的资源；
    所述终端设备确定在第一时域位置与第二时域位置之间不接收所述网络设备通过下行半持续调度的方式发送的数据；其中，所述第一时域位置早于所述第二时域位置，所述第一时域位置根据所述DCI的传输资源的结束位置所在的子帧或者时隙确定；所述第二时域位置根据所述偏移量确定。
  6. 根据权利要求5所述的方法，其特征在于，所述DCI用于指示调度时延值，所述调度时延值和所述偏移量用于确定所述第一上行传输资源的开始时域位置。
  7. 根据权利要求6所述的方法，其特征在于，所述第一时域位置为所述DCI的传输资源的结束位置所在的子帧或者时隙；所述第二时域位置与所述第一时域位置之间的时间间隔为所述调度时延值和所述偏移量的时间和。
  8. 根据权利要求6所述的方法，其特征在于，所述DCI的传输资源的结束位置所在的子帧或者时隙早于所述第一时域位置；所述第一时域位置与所述DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为所述调度时延值；所述第二时域位置与所述第一时域位置之间的时间间隔为所述偏移量。
  9. 一种数据传输方法，其特征在于，所述方法包括：
    终端设备接收网络设备发送的第二配置信息，所述第二配置信息用于指示第一时长值，所述第一时长值不小于所述终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
    所述终端设备接收下行控制信息DCI，所述DCI用于调度第一上行传输资源，所述第一上行传输资源为所述终端设备用于发送上行数据的资源；
    所述终端设备确定在第一时域位置与第二时域位置之间不接收所述网络设备通过下行半持续调度的方式发送的下行数据；
    所述DCI的传输资源的结束位置所在的子帧或者时隙早于所述第一时域位置；所述第一时域位置与所述DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为所述DCI指示的调度时延值；所述第二时域位置与所述第一时域位置之间的之间间隔为所述第一时长值。
  10. 一种数据传输方法，其特征在于，所述方法包括：
    网络设备向终端设备发送第一配置信息，所述第一配置信息用于指示偏移量；
    所述网络设备确定在第一时域位置与第二时域位置之间不发送针对所述终端设备的下行数据；其中，所述第一时域位置早于所述第二时域位置，所述第一时域位置根据所述偏移量确定，所述第二时域位置根据第一上行传输资源的开始时域位置确定，所述第一上行传输资源为所述终端设备用于发送上行数据的资源。
  11. 根据权利要求10所述的方法，其特征在于，所述第一时域位置与所述第二时域位置之间的时间间隔为所述偏移量；所述第二时域位置为所述第一上行传输资源的开始时域位置。
  12. 根据权利要求10所述的方法，其特征在于，所述第一配置信息还用于指示第一时长值，所述第一时长值不小于所述终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
    所述第一时域位置和所述第二时域位置早于所述第一上行传输资源的开始时域位置；
    所述第一时域位置与所述第一上行传输资源的开始时域位置之间的时间间隔等于所述偏移量；所述第二时域位置与所述第一上行传输资源的开始时域位置之间的时间间隔等于所述偏移量与所述第一时长值之间的差值。
  13. 根据权利要求10-12任一项所述的方法，其特征在于，所述网络设备确定在第一时域位置与第二时域位置之间不发送针对所述终端设备的下行数据，包括：
    所述网络设备确定在所述第一时域位置与所述第二时域位置之间，不通过物理下行控制信道PDCCH和/或下行半持续调度的方式发送针对所述终端设备的数据。
  14. 一种数据传输方法，其特征在于，所述方法包括：
    网络设备向终端设备发送的第一配置信息，所述第一配置信息用于指示偏移量；
    所述网络设备向所述终端设备发送下行控制信息DCI，所述DCI用于调度第一上行传输资源，所述第一上行传输资源为所述终端设备用于发送上行数据的资源；
    所述网络设备确定在第一时域位置与第二时域位置之间不通过下行半持续调度的方式发送针对所述终端设备的数据；其中，所述第一时域位置早于所述第二时域位置，所述第 一时域位置根据所述DCI的传输资源的结束位置所在的子帧或者时隙确定；所述第二时域位置根据所述偏移量确定。
  15. 根据权利要求14所述的方法，其特征在于，所述DCI用于指示调度时延值，所述调度时延值和所述偏移量用于确定所述第一上行传输资源的开始时域位置。
  16. 根据权利要求15所述的方法，其特征在于，所述第一时域位置为所述DCI的传输资源的结束位置所在的子帧或者时隙；所述第二时域位置与所述第一时域位置之间的时间间隔为所述调度时延值和所述偏移量的时间和。
  17. 根据权利要求15所述的方法，其特征在于，所述DCI的传输资源的结束位置所在的子帧或者时隙早于所述第一时域位置；所述第一时域位置与所述DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为所述调度时延值；所述第二时域位置与所述第一时域位置之间的时间间隔为所述偏移量。
  18. 一种数据传输方法，其特征在于，所述方法包括：
    网络设备向终端设备发送第二配置信息，所述第二配置信息用于指示第一时长值，所述第一时长值不小于所述终端设备所在服务小区或者服务波束覆盖区域对应的最大差分时延的两倍；
    网络设备向所述终端设备发送下行控制信息DCI，所述DCI用于调度第一上行传输资源，所述第一上行传输资源为所述终端设备用于发送上行数据的资源；
    所述网络设备确定在第一时域位置与第二时域位置之间不通过下行半持续调度的方式向所述终端设备发送数据；所述DCI的传输资源的结束位置所在的子帧或者时隙早于所述第一时域位置；所述第一时域位置与所述DCI的传输资源的结束位置所在的子帧或者时隙之间的时间间隔为所述DCI指示的调度时延值；所述第二时域位置与所述第一时域位置之间的之间间隔为所述第一时长值。
  19. 一种数据传输装置，其特征在于，所述装置包括：
    接收单元，用于接收网络设备发送的第一配置信息，所述第一配置信息用于指示偏移量；
    确定单元，用于确定在所述第一时域位置与所述第二时域位置之间不接收所述网络设备发送的数据；其中，所述第一时域位置早于所述第二时域位置，所述第一时域位置根据所述偏移量确定，所述第二时域位置根据第一上行传输资源的开始时域位置确定，所述第一上行传输资源为所述终端设备用于发送上行数据的资源。
  20. 一种数据传输装置，其特征在于，所述装置包括：
    发送单元，用于向终端设备发送第一配置信息，所述第一配置信息用于指示偏移量；
    确定单元，用于确定在所述第一时域位置与所述第二时域位置之间不向所述终端设备发送下行数据；其中，所述第一时域位置早于所述第二时域位置，所述第一时域位置根据所述偏移量确定，所述第二时域位置根据第一上行传输资源的开始时域位置确定，所述第一上行传输资源为所述终端设备用于发送上行数据的资源。
  21. 一种终端设备，其特征在于，包括：处理器和收发器；
    所述收发器，用于接收信号或者发送信号；所述处理器，用于执行存储器所存储的计算机执行指令，以使所述终端设备执行如权利要求1-10任一项所述的方法。
  22. 一种网络设备，其特征在于，包括：处理器和收发器；
    所述收发器，用于接收信号或者发送信号；所述处理器，用于执行存储器所存储的计算机执行指令，以使所述网络设备执行如权利要求11-20任一项所述的方法。
  23. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序，当所述计算机程序在一个或多个处理器上运行时，使得如权利要求1-10中任一项所述的方法或如权利要求11-20中任一项所述的方法被执行。
  24. 一种芯片，其特征在于，包括逻辑电路和接口，所述逻辑电路和所述接口耦合；所述接口用于输入和/或输出代码指令，所述逻辑电路用于执行所述代码指令，以使权利要求1-10中任一项所述的方法被执行，或者，以使权利要求11-20中任一项所述的方法被执行。
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