WO2021018262A1 - 数据传输方法及其装置 - Google Patents

数据传输方法及其装置 Download PDF

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Publication number
WO2021018262A1
WO2021018262A1 PCT/CN2020/106020 CN2020106020W WO2021018262A1 WO 2021018262 A1 WO2021018262 A1 WO 2021018262A1 CN 2020106020 W CN2020106020 W CN 2020106020W WO 2021018262 A1 WO2021018262 A1 WO 2021018262A1
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WIPO (PCT)
Prior art keywords
time domain
downlink data
domain resource
data
resource
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PCT/CN2020/106020
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English (en)
French (fr)
Inventor
杭海存
施弘哲
纪刘榴
王明哲
毕晓艳
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华为技术有限公司
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Publication of WO2021018262A1 publication Critical patent/WO2021018262A1/zh

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • 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
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows

Definitions

  • the embodiments of the present application relate to the field of communication technology, and in particular to a data transmission method and device.
  • 5G fifth generation
  • 5G systems have higher requirements on system capacity, bandwidth, delay, peak rate and many other performance aspects.
  • bandwidth In order to achieve the performance goals of the 5G system, it is necessary to increase bandwidth, improve spectrum efficiency, and increase site density.
  • Increasing bandwidth means the need to use high frequency bands, which will reduce cell coverage, and thus need to increase the transmission reception point (TRP).
  • TRP transmission reception point
  • Multi-station coordinated transmission refers to multiple TRPs cooperating in the data transmission of one terminal device, such as cooperating in the transmission of physical downlink shared channel (PDSCH); or multiple TRPs jointly receiving data sent by a terminal device For example, joint reception of a physical uplink shared channel (PUSCH) sent by a certain terminal device.
  • Repeated transmission can be repeated transmission of the same data by one TRP, or repeated transmission of the same data by multiple TRPs.
  • TRP 1 transmits data 1 in time unit 1
  • TRP 2 transmits data 1 in time unit 2.
  • Time unit 1 and time unit 2 may be the same time unit or different time units.
  • Embodiments of the present application provide a data transmission method and device, which can avoid transmission conflicts in repeated transmission scenarios.
  • the first aspect of the embodiments of the present application provides a data transmission method, including: determining a pre-configured time domain resource of first downlink data, where the pre-configured time domain resource is used to repeatedly transmit the first downlink data; receiving configuration information, according to The configuration information determines the scheduling time domain resource; if the pre-configured time domain resource and the scheduling time domain resource overlap the time domain resource, data is transmitted on the scheduling time domain resource.
  • the data is first transmitted on the scheduled time domain resources, thereby avoiding repeated transmission scenarios Transmission conflict under.
  • the scheduled time domain resource is a time domain resource for transmitting the second downlink data
  • the priority of the second downlink data is higher than the priority of the first downlink data. Since the priority of the second downlink data is higher than the priority of the first downlink data, in the case of overlap, the second downlink data is preferentially transmitted on the scheduling time domain resource.
  • the second downlink data may be emergency service data or aperiodic reference signal.
  • the configuration information indicates that the time domain resource is scheduled to be used for uplink transmission, that is, used to carry uplink data. It can be understood that the scheduled time domain resource cannot be used to transmit the first downlink data.
  • the pre-configured time domain resource of the first downlink data is used to repeatedly transmit N first downlink data, and the i-th one of the pre-configured time domain resources of the first downlink data
  • the pre-configured time domain resources of the first downlink data overlap with the scheduled time domain resources, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N.
  • the i-th first downlink data can be received on the overlapping time domain resources in a puncturing manner.
  • This method provides that the i-th first downlink data is received in a punctured manner in the case of overlap, so that the interference calculated by the terminal device is more accurate, and the impact on performance is reduced.
  • the demodulation reference signal when the demodulation reference signal is not carried on the overlapping time domain resource, the i-th first downlink data is received on the overlapping time domain resource in a puncturing manner.
  • the overlapping time domain resource does not carry the demodulation reference signal, so the data carried by the scheduling time domain resource will not affect the channel estimation of the i-th first downlink data, so it can be received in a puncturing manner.
  • the method further includes: determining the actual receiving time domain resource of each first downlink data according to the overlapping time domain resources, and determining the actual receiving time domain resource of each first downlink data respectively
  • the first downlink data is received upward, and the actual received time domain resource of each first downlink data does not overlap with the above-mentioned scheduled time domain resource.
  • This method provides a scheme for transmitting the first downlink data under overlapping conditions. Based on the overlapping time domain resources, the pre-configured time domain resources of each first downlink data can be moved to determine the actual value of each first downlink data. Receive time domain resources. When moving, all pre-configured time-domain resources of the i-th first downlink data can be moved, or part of the pre-configured time-domain resources of the i-th first downlink data can be moved.
  • the pre-configured time domain resource of the first downlink data is used to repeatedly transmit N first downlink data, and the i-th one of the pre-configured time domain resources of the first downlink data
  • the pre-configured time domain resources of the first downlink data overlap with the scheduled time domain resources, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N.
  • the method further includes: determining the actual receiving time domain resource of the i-th first downlink data according to the overlapping time domain resources, and receiving the i-th first downlink data on the actual receiving time domain resource of the i-th first downlink data Downlink data. This method provides a scheme for transmitting the i-th first downlink data in the case of overlap.
  • the actual reception time domain resource of the i-th first downlink data does not overlap with the scheduled time domain resource.
  • the actual reception time domain of the i-th first downlink data Receiving the i-th first downlink data on the resource can avoid scheduling time domain resources, thereby avoiding transmission conflicts.
  • This method can be implemented by moving the pre-configured time-domain resource of the i-th first downlink data, and the moved time-domain resource is the actual received time-domain resource of the i-th first downlink data.
  • the actual received time-domain resource of the i-th first downlink data does not cross time domain units, That is, the actual received time domain resource of the i-th first downlink data and the overlapping time domain resource belong to the same time domain unit.
  • the time domain unit may be a slot.
  • the size of the domain resources is inconsistent with the size of the pre-configured time domain resources. For example, the number of actual received time domain resources of the i-th first downlink data is smaller than the number of configured time domain resources. If the number of time domain symbols is used to represent the time domain resources The number of time domain symbols of the actual received time domain resource of the i-th first downlink data is smaller than the number of time domain symbols of the configured time domain resource.
  • the modulation and coding strategy can be adjusted, and the i-th first downlink data is received on the actual receiving time domain resource of the i-th first downlink data according to the adjusted modulation and coding strategy.
  • the coding rate corresponding to the adjusted modulation coding strategy is different from the coding rate before adjustment, and the modulation mode is the same.
  • the method further includes: receiving transmission configuration indication information, where the transmission configuration indication information is used to indicate a plurality of activated transmission configuration indication states. According to multiple activated transmission configuration indication information, it can be determined that the first downlink data comes from multiple TRPs, and it is determined that it is in a scenario of multi-station coordinated transmission.
  • a second aspect of the embodiments of the present application provides a data transmission method, including: sending resource indication information, the resource indication information is used to indicate a pre-configured time domain resource of first downlink data, and the pre-configured time domain resource is used for repeated transmission First downlink data; sending configuration information, which is used to indicate the scheduling of time domain resources; if the pre-configured time domain resources and the scheduling time domain resources have overlapping time domain resources, data is transmitted on the scheduling time domain resources.
  • the data when the pre-configured time domain resource of the first downlink data that is repeatedly transmitted overlaps with the scheduled time domain resource, the data is preferentially transmitted on the scheduled time domain resource, thereby avoiding repeated transmission scenarios Transmission conflict under.
  • the scheduled time domain resource is a time domain resource for transmitting the second downlink data
  • the priority of the second downlink data is higher than the priority of the first downlink data. Since the priority of the second downlink data is higher than the priority of the first downlink data, in the case of overlap, the second downlink data is preferentially transmitted on the scheduling time domain resource.
  • the second downlink data may be emergency service data or aperiodic reference signal.
  • the configuration information indicates that the time domain resource is scheduled to be used for uplink transmission, that is, used to carry uplink data. It can be understood that the scheduled time domain resource cannot be used to transmit the first downlink data.
  • the pre-configured time domain resource of the first downlink data is used to repeatedly transmit N first downlink data, and the i-th one of the pre-configured time domain resources of the first downlink data
  • the pre-configured time domain resources of the first downlink data overlap with the scheduled time domain resources, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N.
  • the i-th first downlink data can be sent on the overlapping time domain resources in a puncturing manner.
  • This method provides that the i-th first downlink data is sent in a punctured manner in the case of overlap, so that the interference calculated by the terminal device is more accurate, and the impact on performance is reduced.
  • the i-th first downlink data is sent on the overlapping time domain resource in a puncturing manner.
  • the overlapping time domain resources do not carry the demodulation reference signal, so the data carried by the scheduling time domain resources will not affect the channel estimation of the i-th first downlink data, so the puncturing method can be used for transmission.
  • the method further includes: determining the actual sending time domain resource of each first downlink data according to the overlapping time domain resources, and setting the actual sending time domain resource of each first downlink data respectively
  • the first downlink data is sent upstream, and the actual sending time domain resource of each first downlink data does not overlap with the scheduling time domain resource.
  • This method provides a scheme for transmitting the first downlink data under overlapping conditions. Based on the overlapping time domain resources, the pre-configured time domain resources of each first downlink data can be moved to determine the actual value of each first downlink data. Send time domain resources. When moving, all pre-configured time-domain resources of the i-th first downlink data can be moved, or part of the pre-configured time-domain resources of the i-th first downlink data can be moved.
  • the pre-configured time domain resource of the first downlink data is used to repeatedly transmit N first downlink data, and the i-th one of the pre-configured time domain resources of the first downlink data
  • the pre-configured time domain resources of the first downlink data overlap with the scheduled time domain resources, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N.
  • the method further includes: determining the actual sending time domain resource of the i-th first downlink data according to the overlapping time domain resources, and sending the i-th first downlink data on the actual sending time domain resource of the i-th first downlink data.
  • This method provides a scheme for transmitting the i-th first downlink data in the case of overlap.
  • the actual transmission time domain resource of the i-th first downlink data does not overlap with the scheduled time domain resource.
  • the actual transmission time domain of the i-th first downlink data Sending the i-th first downlink data on the resource can avoid scheduling time domain resources, thereby avoiding transmission conflicts.
  • This method can be implemented by moving the pre-configured time-domain resource of the i-th first downlink data, and the moved time-domain resource is the actual sending time-domain resource of the i-th first downlink data.
  • the actual sending time domain resource of the i-th first downlink data does not cross time domain units, That is, the actual sending time domain resource of the i-th first downlink data and the overlapping time domain resource belong to the same time domain unit.
  • the time domain unit may be a slot.
  • the actual transmission time domain resource of the i-th first downlink data and the overlapping time domain resource belong to the same time domain unit, it may result in the actual transmission time of the i-th first downlink data
  • the size of the domain resources is inconsistent with the size of the pre-configured time domain resources. For example, the actual number of time domain resources sent for the i-th first downlink data is smaller than the number of configured time domain resources. , Then the number of time domain symbols of the actual sending time domain resource of the i-th first downlink data is less than the number of time domain symbols of the configured time domain resource.
  • the modulation and coding strategy can be adjusted, and the i-th first downlink data is sent on the actual transmission time domain resource of the i-th first downlink data according to the adjusted modulation and coding strategy.
  • the coding rate corresponding to the adjusted modulation coding strategy is different from the coding rate before adjustment, and the modulation mode is the same.
  • the pre-configured time domain resource of the first downlink data is used to repeatedly transmit N first downlink data, and the i-th one of the pre-configured time domain resources of the first downlink data
  • the pre-configured time domain resources of the first downlink data overlap with the scheduled time domain resources, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N.
  • the method further includes: determining the actual sending time domain resource of the i-th first downlink data according to the overlapping time domain resources, and the actual sending time domain resource of the i-th first downlink data and the scheduling time domain resource do not overlap; if The number of actual transmission time domain resources of the i-th first downlink data is less than the number of pre-configured time domain resources of the i-th first downlink data, then the actual transmission time-domain resources of the i-th first downlink data The i-th first downlink data is not sent on the uplink. That is, the configured i-th first downlink data is not sent. In the case that the first first downlink data is correctly transmitted, one less first downlink data is subsequently sent, which has less impact on the content of the first downlink data obtained by the terminal device.
  • the pre-configured time domain resource of the first downlink data is used to repeatedly transmit N first downlink data, and the i-th one of the pre-configured time domain resources of the first downlink data
  • the pre-configured time domain resources of the first downlink data overlap with the scheduled time domain resources, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N.
  • the method further includes: not sending the i-th first downlink data on the pre-configured time domain resource of the i-th first downlink data. That is, the configured i-th first downlink data is not sent. In the case that the first first downlink data is correctly transmitted, one less first downlink data is subsequently sent, which has less impact on the content of the first downlink data obtained by the terminal device.
  • transmission configuration indication information is sent, where the transmission configuration indication information is used to indicate multiple active transmission configuration indication states.
  • the terminal device may determine that the first downlink data comes from multiple TRPs according to multiple activated transmission configuration indication information, and determine that it is in a scenario of multi-station coordinated transmission.
  • a third aspect of the embodiments of the present application provides a data transmission device, which may be a terminal device, and the terminal device can implement part or all of the functions of the terminal device in the method example described in the first aspect, such as the function of the terminal device. It may have some or all of the functions in the embodiments of the present application, and may also have the function of independently implementing any of the embodiments of the present application.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above-mentioned functions.
  • the structure of the terminal device may include a processing unit and a communication unit, and the processing unit is configured to support the terminal device to perform corresponding functions in the foregoing method.
  • the communication unit is used to support communication between the terminal device and other devices.
  • the terminal device may also include a storage unit, which is used for coupling with the processing unit and the communication unit, and stores the necessary program instructions and data of the terminal device.
  • the terminal device includes a processing unit and a communication unit,
  • a processing unit configured to determine a pre-configured time domain resource of the first downlink data, where the pre-configured time domain resource is used to repeatedly transmit the first downlink data;
  • the communication unit is used to receive configuration information
  • the processing unit is further configured to determine the scheduling time domain resource according to the configuration information
  • the communication unit is further configured to transmit data on the scheduled time domain resource when the processing unit determines that the pre-configured time domain resource and the scheduled time domain resource overlap the time domain resource.
  • the processing unit may be a processor
  • the communication unit may be a transceiver
  • the storage unit may be a memory
  • the terminal device includes at least one processor and a transceiver
  • a processor configured to determine a pre-configured time domain resource of the first downlink data, where the pre-configured time domain resource is used to repeatedly transmit the first downlink data;
  • Transceiver for receiving configuration information
  • the transceiver is also used to transmit data on the scheduled time domain resource when the processing unit determines that the pre-configured time domain resource and the scheduled time domain resource overlap the time domain resource.
  • the processor used to determine the pre-configured time domain resource of the first downlink data may be the same or different from the processor used to determine the scheduling time domain resource according to the configuration information.
  • the fourth aspect of the embodiments of the present application provides a data transmission device.
  • the data transmission device may be a network device.
  • the network device can implement part or all of the functions of the network device in the method example described in the first aspect, such as the function of the network device. It may have some or all of the functions in the embodiments of the present application, and may also have the function of independently implementing any of the embodiments of the present application.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above-mentioned functions.
  • the structure of the network device may include a processing unit and a communication unit, and the processing unit is configured to support the network device to perform corresponding functions in the foregoing method.
  • the communication unit is used to support communication between network devices and other devices.
  • the network device may also include a storage unit, which is used for coupling with the processing unit and the communication unit, and stores the program instructions and data necessary for the network device.
  • the network device includes a processing unit and a communication unit,
  • the communication unit is configured to send resource indication information, where the resource indication information is used to indicate a pre-configured time domain resource of the first downlink data, and the pre-configured time domain resource is used to repeatedly transmit the first downlink data; sending configuration information, the Configuration information is used to indicate scheduling time domain resources;
  • the communication unit is further configured to transmit data on the scheduled time domain resource when the processing unit determines that the pre-configured time domain resource and the scheduled time domain resource overlap the time domain resource.
  • the processing unit may be a processor
  • the communication unit may be a transceiver
  • the storage unit may be a memory
  • the network device includes at least one processor and a transceiver
  • the transceiver is configured to send resource indication information, the resource indication information is used to indicate a pre-configured time domain resource of the first downlink data, the pre-configured time domain resource is used to repeatedly transmit the first downlink data; the configuration information is sent, the Configuration information is used to indicate scheduling time domain resources;
  • the transceiver is also used to transmit data on the scheduled time domain resource when the processor determines that the pre-configured time domain resource and the scheduled time domain resource overlap the time domain resource.
  • the processor can be used to perform, for example, but not limited to, baseband related processing
  • the transceiver can be used to perform, for example, but not limited to, radio frequency transceiving.
  • the above-mentioned devices may be respectively arranged on independent chips, or at least partly or fully arranged on the same chip.
  • the processor can be further divided into an analog baseband processor and a digital baseband processor.
  • the analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip.
  • a digital baseband processor can be combined with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) Integrated on the same chip.
  • application processors such as but not limited to graphics processors, multimedia processors, etc.
  • Such a chip can be called a system on chip. Whether each device is independently arranged on different chips or integrated on one or more chips often depends on the specific needs of product design. The embodiment of the present invention does not limit the specific implementation form of the foregoing device.
  • a fifth aspect of the embodiments of the present application provides a processor configured to execute the foregoing various methods.
  • the process of sending the above information or data and receiving the above information or data in the above methods can be understood as the process of outputting the above information or data by the processor, and the processor receiving the above information or data input. the process of.
  • the processor when outputting the above information or data, the processor outputs the above information or data to the transceiver for transmission by the transceiver.
  • other processing may be required before it reaches the transceiver.
  • the transceiver receives the aforementioned information or data and inputs it into the processor. Furthermore, after the transceiver receives the above information or data, the above information or data may need to undergo other processing before being input to the processor.
  • the sending configuration information mentioned in the foregoing method can be understood as the configuration information sent and output by the processor.
  • receiving configuration information may be understood as the processor receiving configuration information.
  • the processor outputs and receives, inputs and other operations, instead of transmitting, sending and receiving directly by the radio frequency circuit and antenna.
  • the foregoing processor may be a processor dedicated to executing these methods, or a processor that executes computer instructions in a memory to execute these methods, such as a general-purpose processor.
  • the above-mentioned memory may be a non-transitory memory, such as a read only memory (ROM), which may be integrated with the processor on the same chip, or may be arranged on different chips.
  • ROM read only memory
  • the present invention The embodiment does not limit the type of the memory and the setting mode of the memory and the processor.
  • a sixth aspect of the embodiments of the present application provides a chip system, which includes at least one processor and an interface, and is used to support terminal devices to implement the functions involved in the first aspect, such as determining the pre-configured time domain of the first downlink data Resources.
  • the chip system also includes a memory, which is used to store necessary program instructions and data for the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the seventh aspect of the embodiments of the present application provides a chip system.
  • the chip system includes at least one processor and an interface for supporting network devices to implement the functions involved in the first aspect, for example, determining the i-th based on overlapping time domain resources.
  • the chip system also includes a memory, which is used to store necessary program instructions and data for the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the eighth aspect of the embodiments of the present application provides a computer storage medium for storing computer software instructions used for the above-mentioned terminal device, which includes a program for executing any one of the first aspect to the sixth aspect of the foregoing method.
  • a ninth aspect of the embodiments of the present application provides a computer storage medium for storing computer software instructions used for the above-mentioned network device, which includes a program for executing the second aspect or the seventh aspect of the above-mentioned method.
  • the tenth aspect of the embodiments of the present application provides a computer program product including instructions, which when run on a computer, causes the computer to execute the method described in the first aspect.
  • the eleventh aspect of the embodiments of the present application provides a computer program product including instructions, which when run on a computer, causes the computer to execute the method described in the second aspect.
  • a twelfth aspect of the embodiments of the present application provides a computer program including instructions, which when run on a computer, causes the computer to execute the method described in the first aspect.
  • a thirteenth aspect of the embodiments of the present application provides a computer program including instructions, which when run on a computer, causes the computer to execute the method described in the second aspect.
  • a fourteenth aspect of the embodiments of the present application provides a data transmission system, which includes one or more terminal devices and one or more network devices.
  • Figure 1 shows three examples of repeated transmission in the time domain in a single-site scenario
  • Figure 2 is a diagram showing three examples of repeated transmission in the time domain in a multi-station scenario
  • FIG. 3 is an example diagram of time-domain resources that overlap pre-configured time-domain resources and time-domain resources for scheduling time-domain data
  • FIG. 4 is a schematic diagram of a network architecture applying an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another network architecture applying an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a data transmission method provided by an embodiment of this application.
  • Figure 7-1 is an example diagram of puncturing transmission on time-frequency resources provided by an embodiment of the application.
  • FIG. 7-2 is an example diagram of puncturing transmission on time domain resources provided by an embodiment of this application.
  • FIG. 8 is an example diagram of transmission in a collision-free manner provided by an embodiment of this application.
  • FIG. 9 is an example diagram of another collision-free transmission provided by an embodiment of the application.
  • FIG. 10 is an exemplary diagram of yet another collision-free transmission method provided by an embodiment of the application.
  • FIG. 11 is an example diagram of yet another collision-free transmission method provided by an embodiment of the application.
  • FIG. 12 is a diagram of an example of transmission in a special case provided by an embodiment of this application.
  • FIG. 13 is a diagram of another example of transmission in a special case provided by an embodiment of the application.
  • FIG. 14 is an example diagram of abandonment transmission provided by an embodiment of the application.
  • 15 is a schematic diagram of the logical structure of a data transmission device provided by an embodiment of the application.
  • 16 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • FIG. 17 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • a, b, or c can mean: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.
  • words such as “first” and “second” are used to distinguish technical features that have substantially the same or similar functions and functions. Those skilled in the art can understand that words such as “first” and “second” do not limit the quantity and order of execution, and words such as “first” and “second” do not limit the difference.
  • Repeated transmission can improve the reliability of data transmission, and can be divided into repeated transmission in the time domain, repeated transmission in the frequency domain, and repeated transmission in the space domain.
  • the embodiment of the present application takes repeated transmission in the time domain as an example for introduction, and the repeated transmission on other resources can refer to the repeated transmission in the time domain.
  • Single station refers to a transmission reception point (TRP) that provides services for data transmission of terminal devices.
  • TRP transmission reception point
  • TRP1 transmits the same data twice in the same time domain unit, which indicates repeated transmission in the time domain unit.
  • TRP1 transmits data in a time domain unit, and transmits the data again in an adjacent time domain unit, which indicates repeated transmission between time domain units.
  • TRP 1 transmits the same data twice in a time domain unit, and transmits the data twice in the adjacent time domain unit, indicating repeated transmission in the time domain unit + Repeated transmission between time domain units.
  • Multi-station means that multiple TRPs provide services for data transmission of terminal devices.
  • TRP 1 and TRP 2 transmit the same data in the same time domain unit, which represents repeated transmission in the time domain unit.
  • TRP 1 transmits data in a time domain unit
  • TRP 2 transmits the data in an adjacent time domain unit, which represents repeated transmission between time domain units.
  • TRP 1 and TRP 2 transmit the same data in the same time domain unit
  • TRP 1 and TRP 2 transmit the data in adjacent time domain units, indicating repeated transmission in the time domain unit + Repeated transmission between time domain units.
  • TRP 1 and TPR 2 can be deployed on the same base station or on different base stations.
  • the repeated transmission between time domain units does not limit the repeated transmission between adjacent time domain units, and may also be repeated transmission between non-adjacent time domain units.
  • repeated transmission between time domain units refers to repeated transmission between different time domain units.
  • the same data transmitted in different time-domain units may carry the same redundancy version (RV) number, or may also carry different RV numbers.
  • RV redundancy version
  • the time domain unit can be a slot or a mini-slot, etc.
  • a slot can include a positive integer number of symbols, such as 7, 14, 6, or 12.
  • the number of symbols included in the mini-slot is less than the number of symbols included in the slot.
  • slot includes 14 symbols
  • mini-slot includes 7 symbols.
  • the time unit in FIG. 1 and FIG. 2 takes a slot including 14 symbols as an example, and the time unit involved in this application also takes a slot including 14 symbols as an example.
  • the symbols can be orthogonal frequency division multiplexing (OFDM) symbols, discrete Fourier transform spreading orthogonal frequency division multiplexing (discrete Fourier transform spread spectrum orthogonal frequency division multiplexing, DFT-S- OFDM) symbols, etc.
  • OFDM symbols are taken as an example for description, and other symbols are similar.
  • the pre-configured time domain resources refer to the time domain resources that are configured or allocated by the network equipment for the terminal equipment, which are indicated or determined by the resource indication information, and may or may not be actual time domain resources used. If the pre-configured time domain resource does not overlap the time domain resource of other data, then the pre-configured time domain resource is the actual time domain resource used; if the pre-configured time domain resource overlaps with the time domain resource of other data Domain resources, the actual time domain resources used depend on the situation and the agreement.
  • the actual received time domain resource refers to the time domain resource actually used by the terminal device to receive data when the pre-configured time domain resource overlaps with the time domain resource of other data.
  • the actual sending time domain resource refers to the time domain resource actually used by the network device to send data in this case.
  • a TRP can also transmit other data. This may cause the time-frequency resources of the repeatedly transmitted data to overlap with the time-frequency resources of other data, and thus may As a result, overlapping time-frequency resources do not know whether to perform repeated transmission or to transmit other data, which affects the reliability of repeatedly transmitted data and affects the normal transmission of other data.
  • the pre-configured time domain resource is the time domain resource configured for repeated transmission of data, which is indicated or determined by the resource indication information, including the time domain resource of each data repeatedly transmitted; the scheduling time domain resource is configured for other data
  • the time domain resource of the, indicated or determined by the configuration information is the resource indication information.
  • the scheduled time domain resource indicated by the configuration information overlaps the pre-configured time domain resource, and the overlapping part of the time domain resource is called the overlapping time domain resource.
  • the overlap can be a partial overlap.
  • the pre-configured time domain resource and the scheduling time domain resource of the second data that are repeatedly transmitted are partially overlapped; the overlap can also be a complete overlap, such as Figure 3(b) In ), the time domain resource of the second data that is repeatedly transmitted and the scheduling time domain resource completely overlap.
  • the second data that is repeatedly transmitted is sent by TRP 2, and TRP 2 transmits other data on the scheduled time domain resource, that is, the second data and other data that are repeatedly transmitted are transmitted by the same TRP.
  • Two data and other data can be transmitted by different TRPs. It is understandable that the overlap can be the overlap of the pre-configured time-domain resources and the scheduled time-domain resources of the data repeatedly transmitted by the same TRP, or the pre-configured time-domain resources of the data repeatedly transmitted by the TRP and the TRP-2 scheduling time-domain resources. Overlap.
  • the resource indication information and the configuration information may be sent by the same TRP or different TRPs, for example, TRP1 sends resource indication information, and TRP2 sends configuration information.
  • overlapping time domain resources does not constitute a limitation to the embodiment of this application. For example, it can also be called conflict time domain resources. Other names used to describe the nature of overlapping time domain resources should also fall into the implementation of this application. The scope of protection of the case.
  • the data involved in the embodiments of the present application may include, but is not limited to, physical downlink shared channel (PDSCH) data, physical uplink shared channel (PUSCH) data, control information, reference signals, and the like. Other data can be understood as non-repetitive transmission data.
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • Other data can be understood as non-repetitive transmission data.
  • the network device sends data according to the configured resource, but when actually sending the data, it does not send data on some resources in the configured resource.
  • the data sending method is to send the data in the punching method, and the location where the data is sent in the punching method is Punch position.
  • the terminal device if the terminal device does not know that the network device sends data in a punching manner, the terminal device will transparently consider that there is data at the punching position, so as to obtain the data for decoding. If the terminal device knows that the network device sends data in a punching manner and the punching position, the terminal device will consider that the punching position carries data with zero power, that is, receiving the data in a punching manner.
  • the resources for sending or receiving data in a punctured manner may be time-frequency resources, time-domain resources, frequency-domain resources, space-domain resources, code-domain resources, and so on. This embodiment of the application takes time-frequency resources as an example.
  • a network device when a network device sends data to a terminal device through certain 10 OFDM symbols in the time domain resource, it transmits data in a punctured manner on the second OFDM symbol of the 10 OFDM symbols, that is, on the second OFDM symbol No data is sent on the network, and the second OFDM symbol is the puncture position.
  • the terminal device decodes the data carried by the 10 OFDM symbols, it considers that the data power carried on the second OFDM symbol is zero.
  • the pre-configured time domain resources and the scheduling time domain resources have overlapping time domain resources, resulting in a transmission conflict between the repeatedly transmitted data and other data. That is, the network equipment does not know whether to send the repeatedly transmitted data or the transmission on the overlapping time domain resources. For other data, the terminal device does not know whether the overlapping time domain resource bears repeated transmission data or other data.
  • the embodiments of the present application provide a data transmission method and device. When the time domain resources of repeatedly transmitted data and the time domain resources of other non-repetitive transmission data overlap, other non-repetitive transmissions can be transmitted preferentially Data, thereby avoiding transmission conflicts, so as to ensure the reliability and integrity of data transmission.
  • the embodiments of this application can be applied to various communication systems, such as 5G systems, can also be called new radio (NR) systems, or can be used in device-to-device (D2D) systems, machine-to-machine ( machine to machine, M2M) system, etc.
  • NR new radio
  • D2D device-to-device
  • M2M machine to machine
  • V2X vehicle to everything
  • X stands for anything
  • the communication methods in the V2X system are collectively referred to as V2X communication.
  • the V2X communication includes: vehicle-to-vehicle (V2V) communication, vehicle to roadside infrastructure (vehicle to infrastructure, V2I) communication, vehicle to pedestrian communication (vehicle to vehicle, V2V) pedestrian, V2P) or vehicle-to-network (V2N) communication, etc.
  • V2V vehicle-to-vehicle
  • V2I vehicle to roadside infrastructure
  • V2N vehicle-to-network
  • the communication between the terminal devices involved in the V2X system is widely referred to as slide link (SL) communication.
  • the embodiments of the present application may also be applied to the Internet of Vehicles, that is, the terminal device involved in the embodiments of the present application may also be a vehicle or a vehicle component applied to a vehicle, such as a vehicle-mounted terminal.
  • FIG. 4 is a schematic diagram of a network architecture to which an embodiment of the present application is applied, and the schematic diagram is a schematic diagram of a V2X system.
  • the diagram includes V2V communication, V2P communication, and V2I/N communication.
  • V2X communication is aimed at high-speed devices represented by vehicles. It is the basic technology and key technology applied in scenarios with very high communication delay requirements in the future, such as smart cars, autonomous driving, and intelligent transportation systems.
  • vehicles or vehicle components communicate via V2V.
  • Vehicles or vehicle components can broadcast their own speed, driving direction, specific location, whether emergency brakes are stepped on, and other information to surrounding vehicles.
  • Drivers of surrounding vehicles can better perceive traffic conditions outside the line of sight by obtaining such information , So as to make advance judgments of dangerous situations and make avoidance;
  • vehicles or vehicle components communicate with roadside infrastructure through V2I, and roadside infrastructure can provide various types of service information and data network access for vehicles or vehicle components .
  • non-stop charging, in-car entertainment and other functions have greatly improved traffic intelligence.
  • Roadside infrastructure for example, roadside unit (RSU) includes two types: one is a terminal equipment type RSU.
  • the RSU of this terminal equipment type is in a non-mobile state, and there is no need to consider mobility; the other is the RSU of network equipment type.
  • the RSU of this network device type can provide timing synchronization and resource scheduling for vehicles or vehicle components that communicate with network devices. Vehicles or vehicle components communicate with people through V2P; vehicles or vehicle components communicate with the network through V2N. V2N and the aforementioned V2I can be collectively referred to as V2I/N.
  • FIG. 5 is a schematic diagram of another network architecture to which an embodiment of the present application is applied.
  • the network architecture may include three network devices and one terminal device.
  • the number and form of the devices shown in FIG. 5 are used as examples and do not constitute a limitation to the embodiments of this application.
  • Actual applications may include one, two or more networks.
  • the network device can be used to communicate with the terminal device through a wireless interface under the control of a network device controller (not shown).
  • the network device controller may be a part of the core network, or it may be integrated into the network device.
  • the network device can be used to transmit control information or user data to the core network through a backhaul interface.
  • Network devices can also communicate with each other directly or indirectly through backhaul interfaces.
  • multiple network devices can schedule the same terminal device, that is, a multi-station coordinated transmission scenario.
  • the multiple TRPs that provide services for different terminal devices can be the same or different.
  • the TRPs that provide services for terminal device 1 are TRP1 and TRP2
  • the TRPs that provide services for terminal device 2 are TRP2 and TRP2.
  • TRP3 In the embodiment of this application, multiple network devices schedule the same terminal device to realize repeated transmission in the time domain.
  • the network equipment involved in the embodiments of the present application may be the basic equipment in FIG. 4, may also be a base station in an NR system, or a base station in a future communication system.
  • the base station may have many forms, such as macro base station, micro base station, relay station, access point and TRP.
  • TRP can be a network device such as a base station, or an antenna panel or panel of the base station.
  • the device used to implement the function of the network device may be a network device, or a device capable of supporting the network device to implement the function, such as a chip system.
  • the device for implementing the functions of the network equipment is the network equipment as an example to describe the technical solutions provided by the embodiments of the present application.
  • the terminal device involved in the embodiment of the present application may also be referred to as a terminal, and may be a device with a wireless transceiver function.
  • Terminal devices can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water (such as ships, etc.); they can also be deployed in the air (such as airplanes, balloons, and satellites, etc.).
  • the terminal equipment may be user equipment (UE).
  • the UE includes a handheld device, a vehicle-mounted device, a wearable device, or a computing device with wireless communication function.
  • the UE may be a mobile phone, a tablet computer, or a computer with wireless transceiver function.
  • Terminal equipment can also be virtual reality (VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, wireless terminals in industrial control, wireless terminals in unmanned driving, wireless terminals in telemedicine, and smart Wireless terminals in the power grid, wireless terminals in smart cities, wireless terminals in smart homes, wireless terminals in the Internet of things (IoT), wireless terminals in the Internet of Vehicles, etc. .
  • the device used to implement the function of the terminal device may be a terminal device, or a device capable of supporting the terminal device to implement the function, such as a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the device for realizing the functions of the terminal device is the terminal device as an example to describe the technical solutions provided by the embodiments of the present application.
  • the embodiments of the present application can be applied to the scenario of repeated transmission by multiple stations, and can also be applied to the scenario of repeated transmission by a single station. In the specific introduction, the scenario of repeated transmission by multiple stations is taken as an example.
  • the embodiments of the present application are applied in the time domain. When repeated transmission data and other non-repeated transmission data have overlapping time domain resources, other non-repeated transmission data is preferentially transmitted, and a solution for how to perform repeated transmission is given.
  • the embodiments of the present application can also be applied to frequency domain, spatial domain, code domain, and so on.
  • FIG. 6 is a schematic flowchart of a data transmission method provided by an embodiment of this application.
  • the process may include but is not limited to the following steps:
  • Step 601 The network device sends resource indication information to the terminal device.
  • the terminal device receives resource indication information from the network device.
  • the resource indication information is used to indicate a pre-configured time domain resource of the first downlink data, and the pre-configured time domain resource is used to repeatedly transmit the first downlink data.
  • the resource indication information may be understood as being used to indicate the time domain resource configured or allocated by the network device for the terminal device to repeatedly transmit the first downlink data.
  • the network device can periodically configure the pre-configured time domain resource of the first downlink data for the terminal device, or semi-statically configure the pre-configured time domain resource of the first downlink data for the terminal device, and then indicate it through the resource indication information .
  • the resource indication information is indicated by downlink control information (DCI) and high-layer signaling, and DCI is a kind of dynamic control signaling.
  • the DCI signaling includes a start and length indicator (SLIV).
  • SLIV is used to indicate that a slot is used to carry a physical downlink shared channel (PDSCH) or a physical uplink shared channel. (physical uplink shared channel, PUSCH)
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • the time domain resource symbol of data In the NR system, it specifically indicates the number of OFDM symbols from a slot to carry data, and how many consecutive OFDM symbols are occupied by the data since the beginning of the OFDM symbol symbol.
  • SLIV is used to indicate the initial OFDM symbol carrying the first first downlink data and the length of the OFDM symbol (or called the number of OFDM symbols) occupied by the first first downlink data.
  • One piece of first downlink data is specifically the first first downlink data among multiple first downlink data that are repeatedly transmitted.
  • the high-level signaling may also be described as repeated transmission parameters, etc.
  • the repeated transmission parameters may include, but are not limited to, the number of repetitions, the time domain interval between two adjacent first downlink data, and the like. In this way, according to the high-level signaling and the SLIV in the DCI, the pre-configured time domain resource for each first downlink data that is repeatedly transmitted can be determined.
  • PDSCH data can be described as data transmitted through PDSCH, or can be simply described as PDSCH.
  • PUSCH data can be described as data transmitted through PUSCH, or can be simply described as PUSCH.
  • the resource indication information is indicated by DCI signaling, and the DCI signaling includes SLIV and repeated transmission parameters.
  • SLIV and repeated transmission parameters refer to the description in the previous manner.
  • the pre-configured time domain resource of each first downlink data that is repeatedly transmitted can be determined according to the SLIV and the repeated transmission parameters included in the DCI.
  • the resource indication information may directly indicate the pre-configured time domain resource of each first downlink data that is repeatedly transmitted, that is, the network device configures time domain resources for each first downlink data that is repeatedly transmitted. Domain resources.
  • the pre-configured time-domain resource of the first downlink data is a time-domain resource set, including the pre-configured time-domain resource of each first downlink data that is repeatedly transmitted. Assuming that N first downlink data is repeatedly transmitted, N is a positive integer, the i-th first downlink data represents any one of the first downlink data repeatedly transmitted, and i is an integer greater than or equal to 1 and less than or equal to N, then the first The pre-configured time domain resources of the downlink data include the first time domain resource of the first downlink data, the second time domain resource of the first downlink data,..., the Nth time domain resource of the first downlink data .
  • the first downlink data is data sent by the network device to the terminal device, which can be described as PDSCH, PDSCH data, or data transmitted through PDSCH, etc.
  • the embodiment of the present application takes the description of the first downlink data as PDSCH as an example.
  • the first downlink data can also be described as a transport block (TB), the transport block carries data, and the data can be described as PDSCH, PDSCH data, or data transmitted through PDSCH.
  • TB transport block
  • step 601 is an optional step.
  • the network device may send resource indication information to the terminal device.
  • the terminal device may determine the pre-configured time domain resource of the first downlink data according to the resource indication information.
  • the terminal device may also use other methods Determine the pre-configured time domain resource of the first downlink data.
  • the network equipment can configure the pre-configured time domain resource of the first downlink data through one or more of dynamic signaling, periodic signaling or semi-static signaling, and send it to the terminal equipment Send resource indication information.
  • the network device can configure the pre-configured time domain resources of the first downlink data through one or more of dynamic signaling, periodic signaling, or semi-static signaling, and send it to the terminal device Resource indication information, each TRP in the multi-station repeated transmission scenario knows the pre-configured time domain resource for transmitting the first downlink data.
  • Step 602 The terminal device determines the pre-configured time domain resource of the first downlink data.
  • the terminal device may determine the pre-configured time domain resource of the first downlink data according to the resource indication information, and specifically may determine the pre-configured time domain resource of each first downlink data.
  • the terminal device determines the start OFDM symbol of the first first downlink data and the length of the OFDM symbol to be occupied according to the SLIV, that is, determines the first first Time domain resources of downlink data. After that, the terminal equipment can determine the time domain resource of the second first downlink data according to the number of repetitions included in the high-level signaling,..., the time domain resource of the last first downlink data, and then determine each first downlink The time domain resource of the data. For example, if N first downlink data is repeatedly transmitted, the number of repetitions can be N-1 times or N times.
  • the terminal device may determine the time domain resource of the second first downlink data according to the time domain interval between two adjacent first downlink data included in the high-level signaling,..., the last first downlink data And then determine the time domain resource of each first downlink data.
  • the time domain interval between two adjacent first downlink data may be represented by OFDM symbols, for example, the time domain interval between two adjacent first downlink data is two OFDM symbols.
  • the terminal device may determine the time domain resource of the second first downlink data according to the number of repetitions included in the high-level signaling and the time domain interval between two adjacent first downlink data,..., the last one first The time domain resource of the downlink data, and then the time domain resource of each first downlink data is determined.
  • the time domain interval here can mean the symbol interval between the start symbols of two adjacent first downlink data, or the end symbol of the i-th first downlink data and the i+1-th first symbol.
  • the symbol interval between the start symbols of the downlink data, i is less than or equal to N.
  • the terminal device determines the time domain resource of the first first downlink data according to SLIV, and then determines the second first downlink data according to the repeated transmission parameters.
  • Time domain resource ..., the last time domain resource of the first downlink data, and then determine the time domain resource of each first downlink data.
  • the terminal device can directly determine the pre-configured time domain resource of each first downlink data that is repeatedly transmitted according to the resource indication information .
  • Step 603 The network device sends configuration information to the terminal device.
  • the terminal device receives configuration information from the network device.
  • the network device After configuring the terminal device with the pre-configured time domain resource of the first downlink data, the network device configures the terminal device with the scheduling time domain resource, and indicates the scheduling time domain resource through the configuration information, that is, the configuration information is used to indicate the scheduling time domain Resources.
  • the network device may perform step 603 after performing step 601, or may perform step 603 before step 601.
  • the scheduling time domain resource may be dynamically configured by the network device for the terminal device, that is, the scheduling time domain resource is dynamically configured for the terminal device when needed, such as aperiodic configuration.
  • the scheduling time domain resource may also be configured by the network device through radio resource control (radio resource control, RRC) signaling, for example, the scheduling time domain resource is configured as uplink data according to the RRC signaling.
  • RRC radio resource control
  • the scheduled time domain resource is a time domain resource for transmitting the second downlink data, and the priority of the second downlink data is higher than the priority of the first downlink data.
  • the scheduling time domain resource is dynamically configured by the network device for the terminal device.
  • the second downlink data may be emergency service data.
  • the emergency service data of a certain emergency service needs to be sent to the terminal device immediately, and the network device configures the dispatch time domain resource for transmitting the emergency service data , And indicate through the configuration information. Since the emergency service data is more urgent than the first downlink data, it can be considered that the priority of the emergency service data is higher than the priority of the first downlink data.
  • the second downlink data may be an aperiodic reference signal, such as aperiodic (AP) channel state information reference signal (channel state information reference signal, CSI-RS), phase tracking reference signal (phase tracking reference signal, PT-RS), demodulation reference signal (demodulation reference signal, DMRS), etc.
  • aperiodic (AP) channel state information reference signal channel state information reference signal
  • CSI-RS phase tracking reference signal
  • PT-RS phase tracking reference signal
  • demodulation reference signal demodulation reference signal
  • DMRS demodulation reference signal
  • the channel state information may include a channel quality indicator (channel quality indicator, CQI), a precoding matrix indicator (precoding matrix indicator, PMI), a rank indication (rank indication, RI), and so on.
  • DMRS is used for relative demodulation of control channels and data channels.
  • PT-RS is used to correct the interference caused by crystal phase error.
  • an aperiodic reference signal is AP CSI-RS as an example.
  • scheduling time domain resources for uplink transmission can also be described as scheduling time domain resources for carrying uplink data.
  • the scheduling time domain resources are configured by the network equipment through RRC signaling.
  • the terminal device may transmit uplink data on the scheduled time domain resource, or may not transmit uplink data on the scheduled time domain resource.
  • the scheduling time domain resource overlaps with the pre-configured time domain resource of the first downlink data. It can be understood that the pre-configured time domain resource of the first downlink data includes the scheduling time domain configured to carry uplink data. Resource, the scheduling time domain resource is only used to carry uplink data, and cannot be used for transmission of first downlink data.
  • Step 604 The terminal device determines the scheduling time domain resource according to the configuration information.
  • the terminal device When the terminal device receives the configuration information, it determines the scheduling time domain resource according to the configuration information.
  • Step 605 The network device determines that the pre-configured time domain resource and the scheduled time domain resource overlap time domain resources.
  • the network device can determine whether the pre-configured time domain resource of the first downlink data overlaps with the scheduling time domain resource, and specifically determines whether the pre-configured time domain resource of a certain first downlink data overlaps with the scheduled time domain resource. Whether scheduling time domain resources overlap, overlap includes partial overlap and complete overlap. For partial overlap, refer to Figure 3(a), and complete overlap can be referred to Figure 3(b). If it is determined that the pre-configured time domain resources and the scheduling time domain resources overlap the time domain resources, optionally, since the priority of the second downlink data is higher than that of the first downlink data, the network device performs step 607 in the scheduling time domain. The second downlink data is sent on the resource.
  • the network device can be in the first The first downlink data is sent on the pre-configured time domain resources of the downlink data, and the second downlink data is sent on the scheduled time domain resources; or optionally, the first downlink data that is repeatedly transmitted does not conflict with the uplink data, Then the network device normally sends the first downlink data on the pre-configured time domain resource of the first downlink data.
  • Step 606 The terminal device determines that the pre-configured time domain resource and the scheduled time domain resource overlap time domain resources.
  • the terminal device After determining the pre-configured time domain resource of the first downlink data, the terminal device does not immediately receive the first downlink data on the pre-configured time domain resource of the first downlink data, and after determining the scheduling time domain resource, Nor does it immediately receive the second downlink data on the scheduled time domain resource, but instead determines whether the pre-configured time domain resource of the first downlink data overlaps with the scheduled time domain resource. If it is determined that the pre-configured time domain resources and the scheduled time domain resources overlap the time domain resources, optionally, since the priority of the second downlink data is higher than the first downlink data, the terminal device may perform step 608, and when scheduling The second downlink data is received on the domain resource.
  • the terminal device If it is determined that there is no overlapping time domain resource between the pre-configured time domain resource and the scheduled time domain resource, and optionally, there is no transmission conflict between the first downlink data and the second downlink data that are repeatedly transmitted, then the terminal device is in the first download
  • the first downlink data is received on the pre-configured time domain resource of the row data, and the second downlink data is received on the scheduled time domain resource; or alternatively, the first downlink data that is repeatedly transmitted does not conflict with the uplink data, then
  • the terminal device normally receives the first downlink data on the pre-configured time domain resource of the first downlink data.
  • Step 607 The network device sends data on the scheduling time domain resource.
  • the network device determines that there are overlapping time domain resources, optionally, when the scheduling time domain resources are used to transmit the second downlink data, and the priority of the second downlink data is higher than that of the first downlink data, the scheduling time On the domain resources, the second downlink data is sent to the terminal device.
  • Step 608 The terminal device receives data on the scheduling time domain resource.
  • the terminal device When determining that there are overlapping time domain resources, the terminal device receives the second downlink data from the network device on the scheduling time domain resources.
  • the second downlink data is preferably transmitted on the scheduled time domain resources, or on the scheduled time domain resources.
  • Carry upstream data How to transmit the first downlink data that is repeatedly transmitted will be described in the first to third embodiments.
  • the pre-configured time domain resource is used to repeatedly transmit N first downlink data
  • the pre-configured time domain resource of the i-th first downlink data overlaps with the scheduled time domain resource
  • N is a positive integer
  • i is greater than An integer equal to 1 and less than or equal to N.
  • the time domain unit can be slot or mini-slot, etc.
  • the time domain unit is taken as an example, and a slot includes 14 OFDM symbols as an example. example.
  • the first downlink data is transmitted on overlapping resources in a puncturing manner.
  • the network device sends the first downlink data on the overlapping resources in a puncturing manner.
  • the terminal device receives the first downlink data on the overlapping resources in a puncturing manner.
  • the overlapping resources may be overlapping time-domain resources, overlapping time-frequency resources, overlapping frequency-domain resources, overlapping code-domain resources, and so on.
  • FIG. 7-1 is an example diagram of puncturing transmission on time-frequency resources provided by an embodiment of this application.
  • the resource grid shown in Figure 7-1 includes a slot (including 14 OFDM symbols) in the time domain and 12 subcarriers in the frequency domain.
  • the basic unit of the resource grid is a resource element (RE). That is a small square.
  • One RE occupies one OFDM symbol in the time domain and one sub-carrier in the frequency domain.
  • One RE can be expressed as (k, l), k represents the sub-carrier index, and l represents the symbol index.
  • the pre-configured time-frequency resource of the first first downlink data is ⁇ (0,0), (1,0), (2,0), (3 ,0), (0,1), (1,1), (2,1), (3,1) ⁇
  • the pre-configured time-frequency resource of the second first downlink data is ⁇ (0,5) , (1,5), (2,5), (3,5), (0,6), (1,6), (2,6), (3,6) ⁇
  • the scheduling time domain resource is ⁇ (0,5), (1,5), (0,6), (1,6) ⁇
  • overlapping time domain resources are ⁇ (0,5), (1,5), (0,6), ( 1,6) ⁇ .
  • the time-frequency resource ⁇ (0,5), (1,5), (0,6) ), (1,6) ⁇ are sent in a punching manner, correspondingly, the terminal equipment is on the time-frequency resource ⁇ (0,5), (1,5), (0,6), (1,6) ⁇ Receive by punching.
  • the time-frequency resource ⁇ (0,5), (1,5), (0,6), (1,6) ⁇ is the puncturing position, or described as the punctured RE. If the terminal device does not know that the network device is transmitting in a punctured manner, the terminal device will think that the punctured RE carries data, so as to obtain the data for decoding. In fact, the punctured RE is interference, which affects the calculation interference. accuracy. If the terminal device knows that the network device is transmitting in a punctured manner, the terminal device will consider that the punctured RE carries data with zero power, so that there is no interference on the punctured RE, which makes the calculation of interference more accurate and makes the puncturing The impact on performance is small. If the scheduling time domain resource is the AP CSI-RS time domain resource, the scheduling time domain resource occupies fewer REs, so that the impact of puncturing on performance is smaller.
  • the protocol can stipulate that when the pre-configured resources of the first downlink data and the scheduled resources overlap resources, the first downlink data is transmitted in a puncture mode, then the terminal device can know that the network device transmits in the puncture mode, or according to the pre-configured resource. Configure resources and schedule resources to determine the punch position (that is, the position of overlapping resources).
  • the network device may also notify the terminal device through signaling (semi-static signaling or dynamic signaling) that when the pre-configured resource of the first downlink data and the scheduled resource overlap, the first downlink data is transmitted in a punctured manner.
  • signaling semi-static signaling or dynamic signaling
  • puncturing is RE-level puncturing.
  • puncturing is performed on both the time domain OFDM symbol and the frequency domain subcarriers.
  • the puncturing can also be time-domain OFDM symbol-level puncturing or frequency-domain subcarrier-level puncturing.
  • FIG. 7-2 is an example diagram of puncturing transmission on time domain resources provided in this embodiment of the application.
  • the actual sending time domain resource of the second first downlink data is determined, and the actual sending time domain resource of the second first downlink data is the second first downlink data.
  • the actual sending time domain resource of the second first downlink data includes overlapping time domain resources, and the network device sends the second first downlink data on the overlapping time domain resources in a puncturing manner.
  • the actual received time domain resource of the second first downlink data is determined, and the actual received time domain resource of the second first downlink data is the second first downlink data.
  • the actual received time domain resources of the second first downlink data include overlapping time domain resources, and the terminal device transmits the second first downlink data on the overlapping time domain resources in a puncturing manner. It can be understood that the second downlink data or the uplink data carried by the terminal device as a scheduling time domain resource has no effect on the second first downlink data, and it is decoded normally.
  • the protocol may stipulate that when the pre-configured time domain resources of the i-th first downlink data and the scheduled time domain resources overlap with the time-domain resources, the network equipment and the terminal equipment transmit the i-th first downlink data in a puncturing manner.
  • the network device can The hole mode sends the second first downlink data on overlapping time domain resources.
  • the terminal device receives the second first downlink data on the overlapping time domain resources in a puncturing manner.
  • the DMRS may be a DMRS corresponding to the PDSCH, and is used for downlink channel estimation for PDSCH coherent demodulation, that is, for downlink channel estimation for coherent demodulation of the first downlink data.
  • the DMRS may be embedded in the time domain resources of the PDSCH, that is, the DMRS may be carried on the pre-configured time domain resources of the first downlink data, or may not be embedded in the time domain resources of the PDSCH, depending on the specific situation.
  • the DMRS is not carried on the overlapping time domain resources, which means that the second downlink data will not affect the channel estimation of the second first downlink data, so it is transmitted on the overlapping time domain resources in a puncturing manner. If the DMRS is carried on the overlapping time domain resources, it means that the second downlink data will affect the channel estimation of the second first downlink data. In this case, the second embodiment or the third embodiment can be adopted.
  • the pre-configured time domain resource of the second first downlink data is the eighth and ninth OFDM symbols of the first slot
  • the scheduling time domain resource is the first slot.
  • the eighth OFDM symbol of a slot, then the eighth OFDM symbol of the first slot is the overlapping time domain resource.
  • the network device sends the second first downlink data on the eighth and ninth OFDM symbols of the first slot, it is sent in a punctured manner on the eighth OFDM symbol.
  • the terminal device receives the second first downlink data on the eighth and ninth OFDM symbols of the first slot, it receives the second first downlink data on the eighth OFDM symbol in a puncturing manner.
  • the pre-configured time domain resource of the second first downlink data is the eighth and ninth OFDM symbols of the first slot
  • the scheduling time domain resource is the first slot.
  • the eighth and ninth OFDM symbols of a slot, then the eighth and ninth OFDM symbols of the first slot are overlapping time domain resources.
  • the network device sends the second first downlink data on the eighth and ninth OFDM symbols of the first slot, it is sent in a punctured manner on the eighth and ninth OFDM symbols.
  • the terminal device receives the second first downlink data on the eighth and ninth OFDM symbols of the first slot, it is received in a puncturing manner on the eighth and ninth OFDM symbols.
  • Fig. 7-2(a) shows transmission in a perforated mode when partially overlapped
  • Fig. 7-2(b) shows transmission in perforated mode when completely overlapped.
  • the i-th first downlink data is transmitted in a punctured manner, so that the interference calculated by the terminal device is more accurate. Reduce the impact on performance.
  • the solution can be applied to a scenario of multi-station repeated transmission.
  • transmission configuration indication transmission configuration indication, TCI
  • TCI transmission configuration indication
  • QCL quasi co-located
  • multiple TRPs can communicate directly, so that the i-th first downlink data is transmitted.
  • TRP can communicate with other TRPs to learn whether pre-configured time-domain resources and scheduling time-domain resources of other TRPs have overlapping time-domain resources, for example, it can learn the pre-configured time-domain resources and scheduling time-domain of the i-th first downlink data Whether the resource has overlapping time domain resources and whether the i-th first downlink data is sent in a puncturing manner.
  • repeated transmissions of multiple TRPs can be scheduled through feedback from the terminal device.
  • TRP 1 configures TRP 2 to transmit the i-th first For downlink data, when the pre-configured time-domain resource of the i-th first downlink data and the scheduled time-domain resource overlap, the terminal device feeds back the time-domain resource for transmitting the i-th first downlink data to TRP 2 There is indication information that overlaps with the scheduling time domain resource.
  • TRP 2 receives the indication information, it sends the i-th first downlink data in a puncturing manner.
  • the processing in these two cases is also applicable to the following two embodiments.
  • the network device avoids scheduling time domain resources to transmit the first downlink data.
  • the terminal device avoids scheduling time domain resources to receive the first downlink data, so that the actual time domain resources of the first downlink data and the scheduling Time domain resources do not overlap to avoid resource conflicts.
  • the embodiment of the present application regards this method as the conflict-free method, and the conflict-free method can be divided into four conflict-free methods. The four conflict-free methods will be introduced below through FIGS. 8-11.
  • overlapping time domain resources determine the actual transmission time domain resource of each first downlink data, and send the second first downlink on the actual transmission time domain resource of each first downlink data. Row data. Wherein, the actual sending time domain resources of each first downlink data and the scheduling time domain resources do not overlap.
  • the network device may move the pre-configured time domain resource of each first downlink data, and determine the pre-configured time domain resource of each first downlink data after the movement as the actual transmission time domain of each first downlink data. Resources.
  • the actual receiving time domain resource of each first downlink data is determined, and on the actual receiving time domain resource of each first downlink data, the second first downlink is received. Row data. Wherein, the actual received time domain resource and the scheduled time domain resource of each first downlink data do not overlap.
  • the protocol may stipulate that when there are overlapping resources between the pre-configured resources of the first downlink data and the scheduled time-domain resources, the network device moves the pre-configured time-domain resources of each first downlink data based on the overlapping time-domain resources to obtain each An actual transmission time domain resource of downlink data, and the actual transmission time domain resource of each first downlink data and the scheduled time domain resource do not overlap.
  • the terminal device moves the pre-configured time domain resources of each first downlink data based on the overlapping time domain resources to obtain the actual reception time domain resources of each first downlink data, and the actual reception of each first downlink data Time domain resources and scheduling time domain resources do not overlap.
  • the network device and the terminal device need to determine the movement rule.
  • the movement rule is M symbols to move forward
  • the movement rule is M symbols to move backward.
  • the pre-configured time-domain resources of the i-th first downlink data and the scheduled time-domain resources overlap, the value of M and the moving direction, the position of the pre-configured time-domain resources of the i-th first downlink data It is related to the location of the scheduling time domain resources.
  • moving backward M is the symbol length from the start symbol of the pre-configured time domain resource of the i-th first downlink data to the last symbol of the scheduled time domain resource, and the symbol length is a positive integer.
  • moving forward M is the symbol length from the last symbol of the pre-configured time domain resource of the i-th first downlink data to the start symbol of the scheduled time domain resource, and the symbol length is a positive integer.
  • the jth first downlink data is any one of the N first downlink data.
  • the network equipment and terminal equipment can move the pre-configured time domain resources of each first downlink data, and ensure that the actual time domain resources of each first downlink data are neither the same as the scheduled time domain resources.
  • the overlap does not overlap with the time domain resources of other signals or data, and it also ensures that the actual time domain resources of two adjacent first downlink data do not overlap.
  • the protocol may also specify a movement rule, for example, moving backward by M symbols, then the network device and terminal device can move M symbols for each pre-configured time domain resource of each first downlink data according to the movement rule.
  • the first way of avoiding collisions is a way of moving the pre-configured time domain resources of the first downlink data as a whole to avoid overlapping with the scheduling time domain resources.
  • FIG. 8 is an example diagram of the conflict-free method one provided by the embodiment of this application.
  • the pre-configured time domain resources of each first downlink data are shifted back by two OFDM symbols to obtain the actual time domain resources of each first downlink data.
  • the time domain resources and the scheduling time domain resources do not overlap, and the actual time domain resources of two adjacent first downlink data do not overlap.
  • Fig. 8(a) takes two OFDM symbols backward as an example, and the movement rule is to move two OFDM symbols backward. If the moving direction is forward, then the whole moves forward by one OFDM symbol, and the movement rule is to move forward by one OFDM symbol.
  • the pre-configured time domain resource of the second first downlink data is the ninth and tenth OFDM symbols of the first slot, and the scheduling time domain resource is the first
  • the pre-configured time domain resources of each first downlink data are shifted back by one OFDM symbol to obtain the actual time domain resources of each first downlink data, and the actual time of each first downlink data
  • the domain resources and the scheduling time domain resources do not overlap, and the actual time domain resources of two adjacent first downlink data do not overlap.
  • 8(b) takes the overall backward movement of one OFDM symbol as an example, and the movement rule is to move backward one OFDM symbol. If the movement direction is forward movement, the overall movement is two OFDM symbols forward, and the movement rule is to move forward two OFDM symbols.
  • each first downlink data is transmitted in a conflict-free manner, so that the actual time of each first downlink data is The domain resources and the scheduling time domain resources do not overlap, thereby avoiding transmission conflicts between each first downlink data and the second downlink data.
  • FIG. 9 is an example diagram of the second conflict-free manner provided by the embodiment of this application.
  • the network equipment For network equipment, according to the overlapping time domain resources, determine the actual sending time domain resource of the second first downlink data, and send the second first downlink data on the actual sending time domain resource of the second first downlink data.
  • One downlink data wherein, the actual sending time domain resource of the second first downlink data does not overlap with the scheduling time domain resource.
  • the network device can move the pre-configured time domain resource of the second first downlink data to determine the pre-configured time domain resource of the moved second first downlink data as the actual second first downlink data. Send time domain resources.
  • the actual receiving time domain resource of the second first downlink data is determined, and the second first downlink data is received on the actual receiving time domain resource of the second first downlink data.
  • One downlink data is not overlap with the scheduling time domain resource.
  • the terminal device can search for available time domain resources before and after the overlapping time domain resources, and then determine the actual reception time domain resources of the second first downlink data.
  • the protocol can stipulate that when the pre-configured time domain resources of the i-th first downlink data and the scheduled time domain resources overlap, the network device moves the pre-configuration of the i-th first downlink data based on the overlapping time domain resources. Time domain resources, the actual sending time domain resources of the i-th first downlink data are obtained, and the actual sending time domain resources of the i-th first downlink data and the scheduled time domain resources do not overlap.
  • the terminal device moves the pre-configured time domain resource of the i-th first downlink data based on the overlapping time domain resources to obtain the actual received time-domain resource of the i-th first downlink data, and the i-th first downlink data
  • the actual receiving time domain resources and scheduling time domain resources do not overlap.
  • the protocol can also specify a movement rule for the pre-configured time domain resources for the i-th first downlink data.
  • the movement rule is to move backward M symbols, and M is the pre-configured time domain resource from the i-th first downlink data.
  • M is the pre-configured time domain resource from the i-th first downlink data.
  • the actual time-domain resource of the i-th first downlink data is not only the same as The scheduling time domain resource does not overlap, and it does not overlap with the i+1th time domain resource, and it does not overlap with the time domain resources of other signals or data.
  • the actual time domain resource of the i-th first downlink data should avoid crossing the slot boundary, because the terminal device does not expect to receive the first downlink data across the slot. If a certain first downlink data that is repeatedly transmitted encounters a slot boundary, the actual time domain resource size of the first downlink data is smaller than the pre-configured time domain resource of the first downlink data.
  • the second collision-free method is to move the pre-configured time domain resource of the i-th first downlink data corresponding to the overlapping time domain resource to avoid overlapping with the scheduled time domain resource. That is, move a pre-configured time domain resource of the first downlink data.
  • a pre-configured time domain resource of the first downlink data moves backward as an example.
  • the pre-configured time domain resources of the second first downlink data are shifted back by two OFDM symbols to obtain the actual time domain resources of the second first downlink data, which is the first slot of the first slot.
  • the eleventh and twelfth OFDM symbols do not overlap with scheduling time domain resources.
  • the pre-configured time domain resources of the second first downlink data are shifted back by one OFDM symbol to obtain the actual time domain resources of the second first downlink data, which is the tenth of the first slot
  • the first and eleventh OFDM symbols do not overlap with the scheduling time domain resources.
  • the pre-configured time domain resource of the second first downlink data is the ninth and tenth OFDM symbols of the first slot, and the scheduling time domain resource is the first
  • the pre-configured time domain resources of the second first downlink data are shifted back by two OFDM symbols to obtain the actual time domain resources of the second first downlink data, which is the first slot of the first slot.
  • the eleventh and twelfth OFDM symbols do not overlap with scheduling time domain resources.
  • Fig. 9(a) and Fig. 9(b) are transmission in a collision avoidance mode when partially overlapping
  • Fig. 9(c) is transmission in a collision avoidance mode when completely overlapping.
  • the size of the actual time domain resource of the second first downlink data is the same as the size of the pre-configured time domain resource of the second first downlink data, and both are two OFDM symbols.
  • the actual time-domain resource size of the i-th first downlink data may be inconsistent with the pre-configured time-domain resource size of the i-th first downlink data. For this case, please refer to the subsequent special cases description of.
  • the i-th first downlink data is transmitted in a conflict-free manner, so that the i-th first downlink data is The actual time domain resources and the scheduled time domain resources do not overlap, thereby avoiding a transmission conflict between the i-th first downlink data and the second downlink data.
  • FIG. 10 is an example diagram of the third conflict-free manner provided by this embodiment of the application.
  • the difference between the conflict-free mode 3 and the conflict-free mode 1 and the conflict-free mode 2 is that the conflict-free mode three is partial movement, the conflict-free mode one is overall movement, and the conflict-free mode two is movement.
  • the pre-configured time domain resource of the i-th first downlink data and the pre-configured time domain resource of the subsequent first downlink data are moved.
  • the subsequent first downlink data refers to the first downlink data after the i-th first downlink data.
  • the actual time domain resource of the i-th first downlink data and the actual time domain of the subsequent first downlink data Resources should avoid crossing the slot boundary, because the terminal device does not expect to receive the first downlink data across the slot. If a certain first downlink data that is repeatedly transmitted encounters a slot boundary, the actual time domain resource size of the first downlink data is smaller than the pre-configured time domain resource of the first downlink data.
  • the pre-configured time domain resources of the second first downlink data are shifted back by two OFDM symbols to obtain the actual time domain resources of the second first downlink data, which is the first slot of the first slot.
  • the eleventh and twelfth OFDM symbols do not overlap with scheduling time domain resources.
  • the pre-configured time domain resource of the third first downlink data is shifted back by two OFDM symbols to obtain the actual time domain resource of the third downlink data, which is the fifth and sixth of the second slot OFDM symbol; shift the pre-configured time domain resource of the fourth first downlink data by two OFDM symbols to get the actual time domain resource of the fourth first downlink data, which is the eleventh slot of the second slot And the twelfth OFDM symbol. If there is first downlink data after the fourth first downlink data, the pre-configured time domain resources of each subsequent first downlink data are also shifted back by two OFDM symbols.
  • the pre-configured time domain resources of the second first downlink data are shifted back by one OFDM symbol to obtain the actual time domain resources of the second first downlink data, which is the tenth of the first slot
  • the first and eleventh OFDM symbols do not overlap with the scheduling time domain resources.
  • the pre-configured time domain resource of the third first downlink data is moved back by two OFDM symbols to obtain the actual time domain resource of the third downlink data, which is the fourth and fifth of the second slot OFDM symbol; shift the pre-configured time domain resource of the fourth first downlink data by two OFDM symbols to get the actual time domain resource of the fourth first downlink data, which is the tenth sum of the second slot The eleventh OFDM symbol. If there is first downlink data after the fourth first downlink data, the pre-configured time domain resources of each subsequent first downlink data are also shifted back by one OFDM symbol.
  • the i-th first downlink data and subsequent first downlink data are transmitted in a conflict-free manner, so that the i-th The actual time domain resources of the first downlink data and the actual time domain resources of each subsequent first downlink data do not overlap with the scheduled time domain resources, thereby avoiding transmission between the first downlink data and the second downlink data conflict.
  • FIG. 11 is an example diagram of the fourth conflict-free manner provided by the embodiment of this application.
  • the difference between the collision-free mode 4 and the collision-free mode 2 is that the collision-free mode 2 moves all the pre-configured time domain resources of the second first downlink data, while the collision-free mode 4 moves the second first downlink data.
  • Part of the row data is pre-configured with time domain resources.
  • the movement rule in collision-free mode four is to move the pre-configured time-domain resources starting from the overlapping time-domain resources in the pre-configured time-domain resources of the second first downlink data and move backward by M symbols, where M means overlap
  • M means overlap
  • the symbol length is a positive integer.
  • the pre-configured time domain resource of the first first downlink data is the third to seventh OFDM symbols of the first slot, a total of five OFDM symbols, and the scheduling time domain resource is the first slot.
  • two symbols are moved locally based on the pre-configured time domain resources of the first first downlink data, and the actual time domain resources of the first first downlink data are obtained, which is the first slot
  • the third, sixth to ninth OFDM symbols of, do not overlap with scheduling time domain resources.
  • Figure 11 is to move a part of the pre-configured time domain resources of the first downlink data, and further can also move part of the pre-configured time domain resources of each first downlink data.
  • the second first one in Figure 11 can also be moved.
  • Part of the downlink data is pre-configured with time domain resources.
  • the pre-configured time-domain resources of the i-th first downlink data and the scheduled time-domain resources overlap the pre-configured time-domain resources of the first downlink data can be moved as a whole.
  • the pre-configured time domain resources of the i-th first downlink data can be moved, and part of the pre-configured time domain resources of the first downlink data can also be moved.
  • moving the pre-configured time domain resources of a certain first downlink data all the pre-configured time-domain resources of the first downlink data can be moved, and part of the pre-configured time-domain resources of the first downlink data can be moved.
  • a part of the pre-configured time domain resources of the first downlink data may be moved forward, and a part of the pre-configured time domain resources of the first downlink data may be moved back.
  • the actual time domain resource of the second first downlink data and the time domain resource of the scheduled transmission resource belong to the same slot, that is, belong to the same time domain unit, the actual time of the second first downlink data
  • the size of the domain resource is consistent with the size of its pre-configured time domain resource.
  • the special situation is that the actual time domain resource of a certain first downlink data crosses the slot boundary. Because the terminal device does not expect to receive the first downlink data across the slot, this The size of the actual time domain resource of the first downlink data is inconsistent with the size of the pre-configured time domain resource.
  • the embodiments of the present application provide the following two solutions.
  • Manner 1 Adjust modulation and coding scheme (MCS), and transmit the i-th first downlink data on the actual time domain resource of the i-th first downlink data according to the MCS.
  • MCS modulation and coding scheme
  • the MCS before adjustment may be called the first MCS
  • the MCS after adjustment may be called the second MCS
  • the first MCS is different from the second MCS.
  • the index of the first MCS may be included in the DCI, or the index of the first MCS may be indicated by the DCI.
  • Table 1 for the correspondence between MCS index, modulation order and code rate. Table 1 is only an MCS table in the protocol, and the present invention is not limited to this table, and only takes this table as an example.
  • FIG. 12 is a diagram of a transmission example in a special case provided in this embodiment of the application.
  • the scheduling time domain resource is the thirteenth OFDM symbol of the first slot, then the thirteenth OFDM symbol of the first slot is the overlapping time domain resource.
  • the occupied time domain resources are the fourteenth OFDM symbol of the first slot and the second slot
  • the terminal device does not expect to receive the first downlink data across the slot, so the actual time domain resource of the second first downlink data is the fourteenth OFDM symbol of the first slot.
  • the actual number of time domain resources (one OFDM symbol) of the second first downlink data is smaller than the number of pre-configured time domain resources (two OFDM symbols) of the second first downlink data.
  • adjust the MCS For network equipment, adjust the MCS, use the first MCS to send the first first downlink data on the pre-configured time domain resource of the first first downlink data, and use the second MCS to send the first downlink data on the second first downlink.
  • the second first downlink data is sent on the actual time domain resource of the row data, and the first MCS is different from the second MCS.
  • the agreement can stipulate that the modulation mode of the first MCS and the second MCS are the same, and the coding rate is different. Because it is repeated transmission, the transmission block size of each first downlink data transmitted is the same.
  • the network device determines the size of the first first downlink data according to the modulation mode corresponding to the first MCS, the coding rate of the first MCS, and the time-frequency resource occupied by the first downlink data.
  • the transport block size of the first first downlink data is the same as the transport block size of the second first downlink data, then the transport block size of the second first downlink data is determined.
  • the coding rate of the second first downlink data is determined according to the transport block size of the second first downlink data, the modulation mode corresponding to the second MCS, and the time-frequency resource occupied by the second first downlink data.
  • the first MCS is determined according to the DCI, and the transmission block size of the first first downlink data is determined according to the modulation mode corresponding to the first MCS, the coding rate of the first MCS, and the resource indication information. Due to repeated transmission, the transport block size of the first first downlink data is the transport block size of the second first downlink data. If the modulation mode remains unchanged, the modulation mode corresponding to the first MCS is the modulation mode corresponding to the second MCS.
  • the coding rate of the second MCS is determined according to the actual reception time domain resources of the second first downlink data, the transport block size of the second first downlink data, and the modulation mode corresponding to the second MCS.
  • the terminal device decodes the second first downlink data received on the actual reception time domain resource of the second first downlink data according to the modulation mode corresponding to the second MCS and the coding rate of the second MCS.
  • the first first downlink data received on the pre-configured time domain resource of the first first downlink data is decoded according to the modulation mode corresponding to the first MCS and the coding rate of the first MCS.
  • the protocol may specify a coding rate threshold, for example, the threshold may be 0.75, 0.93, or 1, etc. If the coding rate of the i-th first downlink data calculated by the network device according to the above method exceeds the threshold, the network device does not send the configured i-th first downlink data, or the terminal device does not receive the configured i-th downlink data The first downlink data, or the network device does not send the configured i-th first downlink data, and the terminal device does not receive the configured i-th first downlink data.
  • the threshold may be 0.75, 0.93, or 1, etc.
  • modulation methods may include, but are not limited to, quadrature phase shift keying (QPSK) modulation, binary phase shift keying (BPSK) modulation, pulse-amplitude modulation (PAM) ) Or quadrature amplitude modulation (quadrature amplitude modulation, QAM), etc.
  • QPSK quadrature phase shift keying
  • BPSK binary phase shift keying
  • PAM pulse-amplitude modulation
  • QAM quadrature amplitude modulation
  • the modulation mode of the first MCS and the second MCS are the same, and the coding rate is different as an example, and the modulation mode and the coding rate may be different, depending on the specific situation.
  • the protocol may specify that in this special case, network equipment and terminal equipment adjust the MCS to transmit the i-th first downlink data, and the protocol may also specify the manner of adjusting the MCS, for example, specifying that the modulation mode remains unchanged and the coding rate is changed.
  • the protocol may also specify that when the actual time domain resource size of any one of the first downlink data is inconsistent with the pre-configured time domain resource size, the network device and the terminal device adjust the MCS to transmit the first downlink data.
  • Manner 2 Discard the i-th first downlink data.
  • the i-th first downlink data when the actual number of time domain resources of the i-th first downlink data is less than the pre-configured time-domain resources of the i-th first downlink data, the i-th first downlink data is not sent. If it is configured to repeatedly transmit N first downlink data, then the actual number of first downlink data sent by the network device is less than N. It is understandable that the network device actually sends N-1 first downlinks on the pre-configured time-domain resources other than the pre-configured time-domain resources of the i-th first downlink data in the configured pre-configured time-domain resources data.
  • the terminal device when the number of actual time domain resources of the i-th first downlink data is less than the pre-configured time domain resources of the i-th first downlink data, it is not the actual time of the i-th first downlink data.
  • the i-th first downlink data is received on the domain resource. If it is configured to repeatedly transmit N first downlink data, then the actual terminal device receives N-1 first downlink data. It can be understood that the terminal device actually receives N-1 first downlinks on the pre-configured time-domain resources other than the pre-configured time-domain resources of the i-th first downlink data among the configured pre-configured time-domain resources data.
  • the protocol may specify that in this special case, the network device does not send the i-th first downlink data, and the terminal device ignores the pre-configured time domain resources of the i-th first downlink data.
  • FIG. 13 is a diagram of another example of transmission in a special case provided in this embodiment of the application.
  • the scheduling time domain resource is the thirteenth OFDM symbol of the first slot, then the thirteenth OFDM symbol of the first slot is the overlapping time domain resource.
  • the occupied time domain resources are the fourteenth OFDM symbol of the first slot and the first OFDM symbol of the second slot.
  • the second first downlink data is sent on the pre-configured time domain resource of the downlink data.
  • the configured pre-configured time domain resources are used to transmit 4 first downlink data, and the actual network device transmits 3 first downlink data, and the corresponding terminal device actually receives 3 first downlink data.
  • the network device does not send the configured i-th first downlink data.
  • the embodiments of the present application refer to this method as the discarding method.
  • FIG. 14 is an example diagram of transmission in a discarding manner provided in an embodiment of this application.
  • the configured i-th first downlink data is not sent. If it is configured to repeatedly transmit N first downlink data, then the actual number of first downlink data sent by the network device is less than N. It is understandable that the network device actually sends N-1 first downlinks on the pre-configured time-domain resources other than the pre-configured time-domain resources of the i-th first downlink data in the configured pre-configured time-domain resources data.
  • the i-th first downlink data is not received on the pre-configured time domain resource of the i-th first downlink data. If it is configured to repeatedly transmit N first downlink data, then the actual terminal device receives N-1 first downlink data. It can be understood that the terminal device actually receives N-1 first downlinks on the pre-configured time-domain resources other than the pre-configured time-domain resources of the i-th first downlink data among the configured pre-configured time-domain resources data.
  • the protocol may stipulate that when the pre-configured time-domain resources of the i-th first downlink data and the scheduled time-domain resources overlap, the network device does not send the configured i-th first downlink data, and the terminal device ignores the first downlink data. i pre-configured time domain resources of the first downlink data.
  • the pre-configured time domain resource of the second first downlink data is the eighth and ninth OFDM symbols of the first slot, and the scheduling time domain resource is the eighth of the first slot. OFDM symbols, then the eighth OFDM symbol of the first slot is the overlapping time domain resource.
  • the network device does not send the second first downlink data on the pre-configured time domain resources of the second first downlink data, that is, does not send the second first downlink data on the eighth and ninth OFDM symbols of the first slot.
  • the configured pre-configured time domain resources are used to transmit 4 first downlink data, and the actual network device transmits 3 first downlink data, and the corresponding terminal device actually receives 3 first downlink data.
  • actual time domain resources in FIGS. 8 to 14 are actual sending time domain resources for the network device, and actual reception time domain resources for the terminal device.
  • the network device may send TCI information to the terminal device, and the TCI information is used to indicate multiple activated TCI states.
  • Multiple activated TCI states means that multiple TRPs cooperate to participate in the repeated transmission of the terminal device, and there are several activated TCI states that indicate that there are several TRPs.
  • the terminal device receives the TCI information, it can determine that the first downlink data comes from multiple TRPs according to multiple activated TCI states, that is, it is determined that it is in a scenario of multi-station repeated transmission.
  • the network device configures multiple QCL states for the terminal device, and the terminal device can determine that it is in a multi-station repeated transmission scenario according to the multiple QCL states.
  • the second downlink data is transmitted preferentially or the uplink data is preferentially carried by
  • the first embodiment, the second embodiment, or the third embodiment can prevent the actual time domain resources of the i-th first downlink data from overlapping with the scheduled time domain resources, thereby avoiding transmission conflicts in repeated transmission scenarios.
  • the methods provided in the embodiments of the present application are respectively introduced from the perspective of network equipment, terminal equipment, and interaction between the network equipment and the terminal equipment.
  • the network device and the terminal device may include a hardware structure and/or software module, and the above functions are implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module . Whether one of the above-mentioned functions is executed in a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraint conditions of the technical solution.
  • FIG. 15 is a schematic diagram of the logical structure of a data transmission device provided in an embodiment of this application.
  • the data transmission device 70 includes a processing unit 701 and a communication unit 702.
  • the data transmission apparatus can realize the function of the terminal device in the embodiment of this application, and can also realize the function of the network device in the embodiment of this application.
  • the data transmission device 70 is used to implement the function of a terminal device:
  • the processing unit 701 is configured to determine a pre-configured time domain resource of the first downlink data, where the pre-configured time domain resource is used to repeatedly transmit the first downlink data;
  • the communication unit 702 is configured to receive configuration information
  • the processing unit 701 is configured to determine scheduling time domain resources according to configuration information
  • the communication unit 702 is further configured to transmit data on the scheduled time domain resource when the processing unit determines that the pre-configured time domain resource and the scheduled time domain resource have overlapping time domain resources.
  • the scheduling time domain resource is a time domain resource for transmitting the second downlink data, and the priority of the second downlink data is higher than the priority of the first downlink data.
  • the configuration information indicates that the time domain resources are scheduled for uplink transmission.
  • the pre-configured time domain resource is used to repeatedly transmit N first downlink data, and the processing unit 701 determines the pre-configured time domain resource and scheduling time of the i-th first downlink data in the pre-configured time domain resource Domain resources overlap, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N;
  • the processing unit 701 is further configured to determine the actual receiving time domain resource of the i-th first downlink data according to the overlapping time domain resource;
  • the communication unit 702 is further configured to receive the i-th first downlink data on the actual receiving time domain resource of the i-th first downlink data.
  • the pre-configured time domain resource is used to repeatedly transmit N first downlink data
  • the processing unit 701 determines the pre-configured time domain resource and scheduling time of the i-th first downlink data in the pre-configured time domain resource
  • the domain resources overlap N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N; the overlapping time domain resources do not carry demodulation reference signals; the communication unit 702 is also used to receive on the overlapping time domain resources in a puncturing manner The i-th first downlink data.
  • the processing unit 701 determines that the actual received time domain resource of the i-th first downlink data does not overlap with the scheduled time domain resource.
  • the processing unit 701 determines that the actual received time domain resource of the i-th first downlink data and the overlapping time domain resource belong to the same time domain unit.
  • the processing unit 701 is further configured to adjust the modulation and coding strategy; the communication unit 702 is specifically configured to receive the i-th first downlink data on the actual receiving time domain resource of the i-th first downlink data according to the adjusted modulation and coding strategy.
  • the first downlink data is further configured to adjust the modulation and coding strategy;
  • the communication unit 702 is further configured to receive transmission configuration indication information, and the transmission configuration indication information is used to indicate multiple activated transmission configuration indication states.
  • the data transmission device 70 is used to implement the function of a network device:
  • the communication unit 702 is configured to send resource indication information, where the resource indication information is used to indicate a pre-configured time domain resource of the first downlink data, and the pre-configured time domain resource is used to repeatedly transmit the first downlink data; sending configuration information, The configuration information is used to indicate scheduling time domain resources;
  • the communication unit 702 is further configured to transmit data on the scheduled time domain resource when the processing unit 701 determines that the pre-configured time domain resource and the scheduled time domain resource overlap the time domain resource.
  • the scheduling time domain resource is a time domain resource for transmitting the second downlink data, and the priority of the second downlink data is higher than the priority of the first downlink data.
  • the configuration information indicates that the time domain resources are scheduled for uplink transmission.
  • the processing unit 701 is configured to determine the actual sending time domain resource of the first downlink data according to the overlapping time domain resources, and the actual sending time domain resource of the first downlink data and the scheduling time domain resource do not overlap; the communication unit 702. It is also configured to send the first downlink data on the actual sending time domain resource of the first downlink data.
  • the pre-configured time domain resource is used to repeatedly transmit N first downlink data
  • the processor determines the pre-configured time domain resource and the scheduling time domain of the i-th first downlink data in the pre-configured time domain resource Resources overlap
  • N is a positive integer
  • i is an integer greater than or equal to 1 and less than or equal to N
  • the processing unit 701 is configured to determine the actual transmission time domain resource of the i-th first downlink data according to the overlapping time domain resource
  • the communication unit 702 Is also used to send the i-th first downlink data on the actual sending time domain resource of the i-th first downlink data.
  • the pre-configured time domain resource is used to repeatedly transmit N first downlink data
  • the processor determines the pre-configured time domain resource and the scheduling time domain of the i-th first downlink data in the pre-configured time domain resource
  • the processing unit 701 determines that the actual sending time domain resource of the i-th first downlink data does not overlap with the scheduled time domain resource.
  • the processing unit 701 determines that the actual sending time domain resource of the i-th first downlink data and the overlapping time domain resource belong to the same time domain unit.
  • the processing unit 701 is configured to adjust the modulation and coding strategy; the communication unit 702 is specifically configured to send the i-th first downlink data on the actual transmission time domain resource of the i-th first downlink data according to the adjusted modulation and coding strategy.
  • the first downlink data is configured to adjust the modulation and coding strategy;
  • the pre-configured time domain resource is used to repeatedly transmit N first downlink data, and the processor determines the pre-configured time domain resource and the scheduling time domain of the i-th first downlink data in the pre-configured time domain resource Resources overlap, N is a positive integer, i is an integer greater than or equal to 1 and less than or equal to N;
  • the processing unit 701 is configured to determine the actual sending time domain resource of the i-th first downlink data according to the overlapping time domain resources, and the actual sending time domain resource of the i-th first downlink data and the scheduling time domain resource do not overlap;
  • the communication unit 702 is further configured to: when the processor determines that the actual number of time domain resources for sending the i-th first downlink data is less than the number of pre-configured time domain resources for the i-th first downlink data, The i-th first downlink data is not sent on the actual sending time domain resource of the i-th first downlink data.
  • the pre-configured time domain resource is used to repeatedly transmit N first downlink data
  • the processor determines the pre-configured time domain resource and the scheduling time domain of the i-th first downlink data in the pre-configured time domain resource Resources overlap
  • N is a positive integer
  • i is a positive integer greater than or equal to 1 and less than or equal to N
  • the communication unit 702 is also configured to not send the i-th first downlink data on the pre-configured time domain resource of the i-th first downlink data Downlink data.
  • the communication unit 702 is further configured to send transmission configuration indication information, and the transmission configuration indication information is used to indicate multiple activated transmission configuration indication states.
  • the division of units in the embodiments of this application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods.
  • the functional units in the various embodiments of this application can be integrated into one process. In the device, it can also exist alone physically, or two or more units can be integrated into a module.
  • the above-mentioned integrated unit can be realized in the form of hardware or software function module.
  • FIG. 16 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • the structure shown in Figure 16 is one possible structure.
  • the terminal device 80 includes a transceiver 801 and one or more controllers/processors 802.
  • the processor 802 is configured to determine a pre-configured time domain resource of the first downlink data, where the pre-configured time domain resource is used to repeatedly transmit the first downlink data;
  • the transceiver 801 is used to receive configuration information
  • the processor 802 is configured to determine scheduling time domain resources according to the configuration information
  • the transceiver 801 is further configured to transmit data on the scheduled time domain resource when the processor 802 determines that the pre-configured time domain resource overlaps with the scheduled time domain resource.
  • the processor used to determine the scheduling time domain resource according to the configuration information and the processor used to determine the pre-configured time domain resource of the first downlink data may be the same processor or different processors.
  • the processor used to determine the existence of overlapping time-domain resources and the processor used to determine the scheduling of time-domain resources according to the configuration information may be the same processor or different processors.
  • the processor used to determine the pre-configured time domain resources of the first downlink data and the processor used to determine the existence of overlapping time domain resources may be the same processor, or may be different processors.
  • the processor 802 determines the pre-configured time domain resource of the first downlink data, and the processor 802 determines that there is an overlapping time domain resource, please refer to the description in the previous method embodiment.
  • controller/processor 802 can be realized by circuits or by general-purpose hardware executing software codes.
  • the terminal device may not only include the aforementioned transceiver 801 and controller/processor 802, but also A memory 803 is included, and the memory 803 is used to store program codes that can be executed by the controller/processor 802.
  • the controller/processor 802 runs the program code stored in the memory 803, the aforementioned functions are executed.
  • the terminal device may also include an encoder 8041, a modulator 8042, a demodulator 8044, and a decoder 8043.
  • the encoder 8041 is used to obtain data/signaling that the terminal device will send to the network device or other terminals, and encode the data/signaling.
  • the modulator 8042 modulates the data/signaling encoded by the encoder 8041 and transmits it to the transceiver 801, and the transceiver 801 sends it to a network device or other terminal.
  • the demodulator 8044 is used to obtain and demodulate the data/signaling sent by the network device or other terminal to the terminal.
  • the decoder 8043 is used to decode the data/signaling demodulated by the demodulator 8044.
  • the aforementioned encoder 8041, modulator 8042, demodulator 8044, and decoder 8043 can be implemented by a synthesized modem processor 804. These units are processed according to the wireless access technology adopted by the wireless access network (for example, the access technology of LTE and other evolved systems).
  • the controller/processor 802 controls and manages the actions of the terminal device, so that each device cooperates to implement the steps executed by the terminal device in the foregoing method embodiment.
  • the controller/processor 802 is used to support the terminal device to execute the content related to the terminal device processing in FIG. 6.
  • FIG. 17 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • the structure shown in Figure 17 is a possible structure.
  • the network device 90 includes a transceiver 901 and one or more processors 902.
  • One or more processors 902 are used for the functions of the network device in the foregoing embodiment, for example, execute 605 in the embodiment shown in FIG. 6 and control the transceiver 901 to send data or information.
  • the network device 90 may also include at least one memory 1030 for storing program instructions and/or data.
  • the memory 903 and the processor 902 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 902 may cooperate with the memory 903 to operate.
  • the processor 902 may execute program instructions stored in the memory 903. At least one of the at least one memory may be included in the processor.
  • the transceiver 901 is used to communicate with other devices through a transmission medium, so that the network device 90 can communicate with other devices, and the other devices may be terminal devices or core network devices.
  • the transceiver may be a communication interface, interface, bus, circuit, or a device capable of implementing the transceiver function.
  • the processor 902 uses the transceiver 901 to send resource indication information, configuration information, and data.
  • the embodiment of the present application does not limit the specific connection medium between the transceiver 901, the processor 902, and the memory 903.
  • the memory 903, the processor 902, and the transceiver 901 are connected by a bus 904 in FIG. 17.
  • the bus is represented by a thick line in FIG. 17, and the connection modes between other components are only for schematic illustration. , Is not limited.
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in FIG. 17, but it does not mean that there is only one bus or one type of bus.
  • An embodiment of the present application also provides a data transmission system, which includes one or more terminal devices and one or more network devices.
  • the processor may be a central processing unit (Central Processing Unit, referred to as "CPU"), and the processor may also be other general-purpose processors, digital signal processors (DSP), and dedicated integration Circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory may include read-only memory and random access memory, and provides instructions and data to the processor.
  • a part of the memory may also include a non-volatile random access memory.
  • the bus system may also include a power bus, a control bus, and a status signal bus.
  • a power bus may also include a power bus, a control bus, and a status signal bus.
  • various buses are marked as bus systems in the figure.
  • the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

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Abstract

本申请实施例提供一种数据传输方法及其装置。在重复传输场景下，重复传输数据所占的时频资源可能会与非重复传输数据所占的时频资源发生冲突，为避免这种冲突，本申请实施例提供的方法包括：确定第一下行数据的预配置时域资源，该预配置时域资源用于重复传输第一下行数据；接收配置信息，根据配置信息确定调度时域资源，该调度时频资源上传输的是非重复传输数据；若预配置时域资源与调度时域资源存在重叠时域资源，在调度时域资源上，传输非重复传输数据。采用本申请实施例，无论是单站点还是多站协作传输的重复传输场景下，都可以可避免重复传输数据与非重复传输数据之间的传输冲突。

Description

数据传输方法及其装置
本申请要求于2019年07月31日提交中国专利局、申请号为201910704681.2、申请名称为“数据传输方法及其装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域，具体涉及一种数据传输方法及其装置。
背景技术
随着通信技术的发展，第五代(5 th-generation，5G)移动通信技术应运而生。5G系统在系统容量、带宽、时延、峰值速率等诸多性能方面上有更高的要求。为了实现5G系统的性能目标，需要增加带宽、提高频谱效率以及增加站址密度等。增加带宽意味着需要采用高频段，而这会降低小区覆盖，从而需要增加传输接收点(transmission reception point，TRP)。
多站协作传输，指的是多个TRP协同参与一个终端设备的数据发送，例如协同参与物理下行共享信道(physical downlink shared channel，PDSCH)的发送；或者多个TRP联合接收一个终端设备发送的数据，例如联合接收某个终端设备发送的物理上行共享信道(physical uplink shared channel，PUSCH)。重复传输，可以是一个TRP对同一数据进行重复传输，也可以是多个TRP对同一数据进行重复传输，例如TRP 1在时间单元1内传输数据1，TRP 2在时间单元2内传输数据1，时间单元1与时间单元2可以是同一时间单元，也可以是不同时间单元。
在重复传输场景中，可能会存在传输冲突，如何避免传输冲突是亟待解决的技术问题。
发明内容
本申请实施例提供一种数据传输方法及其装置，可以避免重复传输场景下的传输冲突。
本申请实施例第一方面提供一种数据传输方法，包括：确定第一下行数据的预配置时域资源，该预配置时域资源用于重复传输第一下行数据；接收配置信息，根据该配置信息确定调度时域资源；若该预配置时域资源与调度时域资源存在重叠时域资源，在该调度时域资源上，传输数据。
本申请实施例第一方面，在重复传输的第一下行数据的预配置时域资源与调度时域资源存在重叠的情况下，优先在调度时域资源上传输数据，从而可避免重复传输场景下的传输冲突。
在一种可能的实现方式中，该调度时域资源为传输第二下行数据的时域资源，第二下行数据的优先级高于第一下行数据的优先级。由于第二下行数据的优先级高于第一下行数据的优先级，因此在重叠的情况下，优先在调度时域资源上传输第二下行数据。第二下行数据可以是紧急业务数据，也可以是非周期的参考信号。
在一种可能的实现方式中，配置信息指示调度时域资源用于上行传输，即用于承载上行数据。可以理解为该调度时域资源不能用于传输第一下行数据。
在一种可能的实现方式中，假设上述第一下行数据的预配置时域资源用于重复传输N个第一下行数据，第一下行数据的预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1且小于等于N的整数。那么可以打孔方式在重叠时域资源上接收第i个第一下行数据。该方式给出在重叠的情况下以打孔方式接收第i个第一下行数据，使得终端设备计算的干扰更加准确，减少对性能的影响。
进一步的，重叠时域资源上未承载解调参考信号的情况下，以打孔方式在重叠时域资源上接收第i个第一下行数据。重叠时域资源未承载解调参考信号，那么调度时域资源承载的数据不会影响第i个第一下行数据的信道估计，因此可采用打孔方式接收。
在一种可能的实现方式中，该方法还包括：根据重叠时域资源，确定每个第一下行数据的实际接收时域资源，分别在每个第一下行数据的实际接收时域资源上接收第一下行数据，每个第一下行数据的实际接收时域资源与上述调度时域资源均不重叠。该方式给出在重叠的情况下传输第一下行数据的方案，可以基于重叠时域资源，移动每个第一下行数据的预配置时域资源来确定每个第一下行数据的实际接收时域资源。移动时，可以移动第i个第一下行数据的全部预配置时域资源，也可以移动第i个第一下行数据的部分预配置时域资源。
在一种可能的实现方式中，假设上述第一下行数据的预配置时域资源用于重复传输N个第一下行数据，第一下行数据的预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1且小于等于N的整数。该方法还包括：根据重叠时域资源，确定第i个第一下行数据的实际接收时域资源，在第i个第一下行数据的实际接收时域资源上，接收第i个第一下行数据。该方式给出在重叠的情况下传输第i个第一下行数据的方案。
在一种可能的实现方式中，第i个第一下行数据的实际接收时域资源与调度时域资源不重叠，该种方式下，在第i个第一下行数据的实际接收时域资源上接收第i个第一下行数据，可以避开调度时域资源，从而避免传输冲突。该种方式可通过移动第i个第一下行数据的预配置时域资源实现，移动后的时域资源即为第i个第一下行数据的实际接收时域资源。
在一种可能的实现方式中，在移动第i个第一下行数据的预配置时域资源的过程中，第i个第一下行数据的实际接收时域资源不会跨时域单元，即第i个第一下行数据的实际接收时域资源与重叠时域资源属于同一时域单元。时域单元可以是时隙(slot)。
在一种可能的实现方式中，为了确保第i个第一下行数据的实际接收时域资源与重叠时域资源属于同一时域单元，可能导致第i个第一下行数据的实际接收时域资源的大小与其预配置时域资源的大小不一致，例如第i个第一下行数据的实际接收时域资源的数目比其配置时域资源的数目小，若用时域符号数目表示时域资源的大小，那么第i个第一下行数据的实际接收时域资源的时域符号数小于其配置时域资源的时域符号数。该种情况下，可调整调制编码策略，根据调整后的调制编码策略在第i个第一下行数据的实际接收时域资源上，接收第i个第一下行数据。例如，调整后的调制编码策略对应的编码速率与调整前的编码速率不同，调制方式相同。
在一种可能的实现方式中，该方法还包括：接收传输配置指示信息，该传输配置指示 信息用于指示多个激活的传输配置指示状态。根据多个激活的传输配置指示信息可以确定第一下行数据来自多个TRP，确定处于多站协作传输的场景。
本申请实施例第二方面提供一种数据传输方法，包括：发送资源指示信息，该资源指示信息用于指示第一下行数据的预配置时域资源，该预配置时域资源用于重复传输第一下行数据；发送配置信息，该配置信息用于指示调度时域资源；若预配置时域资源与调度时域资源存在重叠时域资源，在调度时域资源上，传输数据。
本申请实施例第二方面，在重复传输的第一下行数据的预配置时域资源与调度时域资源存在重叠的情况下，优先在调度时域资源上传输数据，从而可避免重复传输场景下的传输冲突。
在一种可能的实现方式中，该调度时域资源为传输第二下行数据的时域资源，第二下行数据的优先级高于第一下行数据的优先级。由于第二下行数据的优先级高于第一下行数据的优先级，因此在重叠的情况下，优先在调度时域资源上传输第二下行数据。第二下行数据可以是紧急业务数据，也可以是非周期的参考信号。
在一种可能的实现方式中，配置信息指示调度时域资源用于上行传输，即用于承载上行数据。可以理解为该调度时域资源不能用于传输第一下行数据。
在一种可能的实现方式中，假设上述第一下行数据的预配置时域资源用于重复传输N个第一下行数据，第一下行数据的预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1且小于等于N的整数。那么可以打孔方式在重叠时域资源上发送第i个第一下行数据。该方式给出在重叠的情况下以打孔方式发送第i个第一下行数据，以使终端设备计算的干扰更加准确，减少对性能的影响。
进一步的，重叠时域资源上未承载解调参考信号的情况下，以打孔方式在重叠时域资源上发送第i个第一下行数据。重叠时域资源未承载解调参考信号，那么调度时域资源承载的数据不会影响第i个第一下行数据的信道估计，因此可采用打孔方式发送。
在一种可能的实现方式中，该方法还包括：根据重叠时域资源，确定每个第一下行数据的实际发送时域资源，分别在每个第一下行数据的实际发送时域资源上发送第一下行数据，每个第一下行数据的实际发送时域资源与上述调度时域资源均不重叠。该方式给出在重叠的情况下传输第一下行数据的方案，可以基于重叠时域资源，移动每个第一下行数据的预配置时域资源来确定每个第一下行数据的实际发送时域资源。移动时，可以移动第i个第一下行数据的全部预配置时域资源，也可以移动第i个第一下行数据的部分预配置时域资源。
在一种可能的实现方式中，假设上述第一下行数据的预配置时域资源用于重复传输N个第一下行数据，第一下行数据的预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1且小于等于N的整数。该方法还包括：可根据重叠时域资源，确定第i个第一下行数据的实际发送时域资源，在第i个第一下行数据的实际发送时域资源上，发送第i个第一下行数据。该方式给出在重叠的情况下传输第i个第一下行数据的方案。
在一种可能的实现方式中，第i个第一下行数据的实际发送时域资源与调度时域资源不重叠，该种方式下，在第i个第一下行数据的实际发送时域资源上发送第i个第一下行数 据，可以避开调度时域资源，从而避免传输冲突。该种方式可通过移动第i个第一下行数据的预配置时域资源实现，移动后的时域资源即为第i个第一下行数据的实际发送时域资源。
在一种可能的实现方式中，在移动第i个第一下行数据的预配置时域资源的过程中，第i个第一下行数据的实际发送时域资源不会跨时域单元，即第i个第一下行数据的实际发送时域资源与重叠时域资源属于同一时域单元。时域单元可以是时隙(slot)。
在一种可能的实现方式中，为了确保第i个第一下行数据的实际发送时域资源与重叠时域资源属于同一时域单元，可能导致第i个第一下行数据的实际发送时域资源的大小与其预配置时域资源的大小不一致，例如第i个第一下行数据的实际发送时域资源的数目比其配置时域资源的数目小，若用时域符号数目表示时域资源的大小，那么第i个第一下行数据的实际发送时域资源的时域符号数小于其配置时域资源的时域符号数。该种情况下，可调整调制编码策略，根据调整后的调制编码策略在第i个第一下行数据的实际发送时域资源上，发送第i个第一下行数据。例如，调整后的调制编码策略对应的编码速率与调整前的编码速率不同，调制方式相同。
在一种可能的实现方式中，假设上述第一下行数据的预配置时域资源用于重复传输N个第一下行数据，第一下行数据的预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1且小于等于N的整数。该方法还包括：根据重叠时域资源，确定第i个第一下行数据的实际发送时域资源，第i个第一下行数据的实际发送时域资源与调度时域资源不重叠；若第i个第一下行数据的实际发送时域资源的数目小于第i个第一下行数据的预配置时域资源的数目，则在第i个第一下行数据的实际发送时域资源上不发送第i个第一下行数据。即不发送配置的第i个第一下行数据。在第一个第一下行数据正确传输的情况下，后续少发一个第一下行数据，对终端设备获取第一下行数据的内容影响较小。
在一种可能的实现方式中，假设上述第一下行数据的预配置时域资源用于重复传输N个第一下行数据，第一下行数据的预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1且小于等于N的整数。该方法还包括：在第i个第一下行数据的预配置时域资源上不发送第i个第一下行数据。即不发送配置的第i个第一下行数据。在第一个第一下行数据正确传输的情况下，后续少发一个第一下行数据，对终端设备获取第一下行数据的内容影响较小。
在一种可能的实现方式中，发送传输配置指示信息，该传输配置指示信息用于指示多个激活的传输配置指示状态。终端设备可根据多个激活的传输配置指示信息可以确定第一下行数据来自多个TRP，确定处于多站协作传输的场景。
本申请实施例第三方面提供一种数据传输装置，该数据传输装置可以是终端设备，该终端设备具有实现上述第一方面所述方法示例中终端设备的部分或全部功能，例如终端设备的功能可具备本申请中的部分或全部实施例中的功能，也可以具备单独实施本申请中的任一个实施例的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种可能的设计中，终端设备的结构中可包括处理单元和通信单元，处理单元被配 置为支持终端设备执行上述方法中相应的功能。通信单元用于支持终端设备与其他设备之间的通信。终端设备还可以包括存储单元，存储单元用于与处理单元和通信单元耦合，其保存终端设备必要的程序指令和数据。
一种实施方式中，终端设备包括处理单元和通信单元，
处理单元，用于确定第一下行数据的预配置时域资源，该预配置时域资源用于重复传输第一下行数据；
通信单元，用于接收配置信息；
处理单元，还用于根据配置信息确定调度时域资源；
通信单元，还用于在处理单元确定出预配置时域资源与调度时域资源存在重叠时域资源的情况下，在调度时域资源上，传输数据。
作为示例，处理单元可以为处理器，通信单元可以为收发器，存储单元可以为存储器。
一种实施方式中，终端设备包括至少一个处理器和收发器，
处理器，用于确定第一下行数据的预配置时域资源，该预配置时域资源用于重复传输第一下行数据；
收发器，用于接收配置信息；
处理器，用于根据配置信息确定调度时域资源；
收发器，还用于在处理单元确定出预配置时域资源与调度时域资源存在重叠时域资源的情况下，在调度时域资源上，传输数据。
用于确定第一下行数据的预配置时域资源的处理器与用于根据配置信息确定调度时域资源的处理器可以相同，也可以不相同。
本申请实施例第四方面提供一种数据传输装置，该数据传输装置可以是网络设备，该网络设备具有实现上述第一方面所述方法示例中网络设备的部分或全部功能，例如网络设备的功能可具备本申请中的部分或全部实施例中的功能，也可以具备单独实施本申请中的任一个实施例的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种可能的设计中，网络设备的结构中可包括处理单元和通信单元，处理单元被配置为支持网络设备执行上述方法中相应的功能。通信单元用于支持网络设备与其他设备之间的通信。网络设备还可以包括存储单元，存储单元用于与处理单元和通信单元耦合，其保存网络设备必要的程序指令和数据。
一种实施方式中，网络设备包括处理单元和通信单元，
通信单元，用于发送资源指示信息，该资源指示信息用于指示第一下行数据的预配置时域资源，该预配置时域资源用于重复传输第一下行数据；发送配置信息，该配置信息用于指示调度时域资源；
通信单元，还用于在处理单元确定出预配置时域资源与调度时域资源存在重叠时域资源的情况下，在调度时域资源上，传输数据。
作为示例，处理单元可以为处理器，通信单元可以为收发器，存储单元可以为存储器。
一种实施方式中，网络设备包括至少一个处理器和收发器，
收发器，用于发送资源指示信息，该资源指示信息用于指示第一下行数据的预配置时 域资源，该预配置时域资源用于重复传输第一下行数据；发送配置信息，该配置信息用于指示调度时域资源；
收发器，还用于在处理器确定出预配置时域资源与调度时域资源存在重叠时域资源的情况下，在调度时域资源上，传输数据。
在具体实现过程中，处理器可用于进行，例如但不限于，基带相关处理，收发器可用于进行，例如但不限于，射频收发。上述器件可以分别设置在彼此独立的芯片上，也可以至少部分的或者全部的设置在同一块芯片上。例如，处理器可以进一步划分为模拟基带处理器和数字基带处理器。其中，模拟基带处理器可以与收发器集成在同一块芯片上，数字基带处理器可以设置在独立的芯片上。随着集成电路技术的不断发展，可以在同一块芯片上集成的器件越来越多，例如，数字基带处理器可以与多种应用处理器(例如但不限于图形处理器，多媒体处理器等)集成在同一块芯片之上。这样的芯片可以称为系统芯片(system on chip)。将各个器件独立设置在不同的芯片上，还是整合设置在一个或者多个芯片上，往往取决于产品设计的具体需要。本发明实施例对上述器件的具体实现形式不做限定。
本申请实施例第五方面提供一种处理器，用于执行上述各种方法。在执行这些方法的过程中，上述方法中有关发送上述信息或数据和接收上述信息或数据的过程，可以理解为由处理器输出上述信息或数据的过程，以及处理器接收输入的上述信息或数据的过程。具体来说，在输出上述信息或数据时，处理器将上述信息或数据输出给收发器，以便由收发器进行发射。更进一步的，上述信息或数据在由处理器输出之后，还可能需要进行其他的处理，然后才到达收发器。类似的，处理器接收输入的上述信息或数据时，收发器接收上述信息或数据，并将其输入处理器。更进一步的，在收发器收到上述信息或数据之后，上述信息或数据可能需要进行其他的处理，然后才输入处理器。
基于上述原理，举例来说，前述方法中提及的发送配置信息可以理解为处理器发送输出的配置信息。又例如，接收配置信息可以理解为处理器接收配置信息。
如此一来，对于处理器所涉及的发射、发送和接收等操作，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则均可以更加一般性的理解为处理器输出和接收、输入等操作，而不是直接由射频电路和天线所进行的发射、发送和接收操作。
在具体实现过程中，上述处理器可以是专门用于执行这些方法的处理器，也可以是执行存储器中的计算机指令来执行这些方法的处理器，例如通用处理器。上述存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本发明实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
本申请实施例第六方面提供一种芯片系统，该芯片系统包括至少一个处理器和接口，用于支持终端设备实现第一方面所涉及的功能，例如确定第一下行数据的预配置时域资源。在一种可能的设计中，该芯片系统还包括存储器，存储器用于保存终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
本申请实施例第七方面提供一种芯片系统，该芯片系统包括至少一个处理器和接口，用于支持网络设备实现第一方面所涉及的功能，例如根据重叠时域资源，确定第i个第一 下行数据的实际发送时域资源。在一种可能的设计中，该芯片系统还包括存储器，存储器用于保存终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
本申请实施例第八方面提供一种计算机存储介质，用于储存为上述终端设备所用的计算机软件指令，其包括用于执行上述方法的第一方面至第六方面任一方面所涉及的程序。
本申请实施例第九方面提供一种计算机存储介质，用于储存为上述网络设备所用的计算机软件指令，其包括用于执行上述方法的第二方面或第七方面所涉及的程序。
本申请实施例第十方面提供一种包括指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面所述的方法。
本申请实施例第十一方面提供一种包括指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第二方面所述的方法。
本申请实施例第十二方面提供一种包括指令的计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面所述的方法。
本申请实施例第十三方面提供一种包括指令的计算机程序，当其在计算机上运行时，使得计算机执行上述第二方面所述的方法。
本申请实施例第十四方面提供一种数据传输系统，该系统包括一个或多个终端设备，以及一个或多个网络设备。
附图说明
图1为单站场景下在时域上重复传输的三种示例图；
图2为多站场景下在时域上重复传输的三种示例图；
图3为预配置时域资源与调度时域数据的时域资源存在重叠时域资源的示例图；
图4为应用本申请实施例的一种网络架构示意图；
图5为应用本申请实施例的另一种网络架构示意图；
图6为本申请实施例提供的一种数据传输方法的流程示意图；
图7-1为本申请实施例提供的在时频资源上以打孔方式传输的示例图；
图7-2为本申请实施例提供的在时域资源上以打孔方式传输的示例图；
图8为本申请实施例提供的一种免冲突方式传输的示例图；
图9为本申请实施例提供的另一种免冲突方式传输的示例图；
图10为本申请实施例提供的又一种免冲突方式传输的示例图；
图11为本申请实施例提供的又一种免冲突方式传输的示例图；
图12为本申请实施例提供的特殊情况下的一种传输示例图；
图13为本申请实施例提供的特殊情况下的另一种传输示例图；
图14为本申请实施例提供的舍弃方式传输的示例图；
图15为本申请实施例提供的数据传输装置的逻辑结构示意图；
图16为本申请实施例提供的一种终端设备的结构示意图；
图17为本申请实施例提供的一种网络设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。其中，在本申请实施例的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B。在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a和b，a和c，b和c，或a和b和c，其中a，b，c可以是单个，也可以是多个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同或相似的技术特征进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
下面先将对本申请实施例涉及的名词或术语进行介绍。
(1)重复传输
重复传输可以提高数据传输的可靠性，可以分为时域上的重复传输、频域上的重复传输、空域上的重复传输等。本申请实施例以时域上的重复传输为例进行介绍，其他资源上的重复传输可参考时域上的重复传输。
请参见图1，为单站场景下在时域上重复传输的三种示例图。单站指的是一个传输接收点(transmission reception point，TRP)为终端设备的数据传输提供服务。
图1的(a)中，TRP 1在同一时域单元内对同一数据传输了两次，表示时域单元内的重复传输。图1的(b)中，TRP 1在一个时域单元内传输数据，在相邻的时域单元内再次传输该数据，表示时域单元间的重复传输。图1的(c)中，TRP 1在一个时域单元内对同一数据传输了两次，在相邻的时域单元内对该数据也传输了两次，表示时域单元内的重复传输+时域单元间的重复传输。
请参见图2，为多站场景下在时域上重复传输的三种示例图。多站指的是多个TRP为终端设备的数据传输提供服务。
图2的(a)中，TRP 1和TRP 2在同一时域单元对同一数据进行传输，表示时域单元内的重复传输。图2的(b)中，TRP 1在一个时域单元内传输数据，TRP 2在相邻的时域单元内传输该数据，表示时域单元间的重复传输。图2的(c)中，TRP 1和TRP 2在同一时域单元对同一数据进行传输，TRP 1和TRP 2在相邻的时域单元内传输该数据，表示时域单元内的重复传输+时域单元间的重复传输。
多站场景下的重复传输，TRP 1和TPR 2可以部署在同一基站上，也可以部署在不同的基站上。
图1和图2中，时域单元间的重复传输不限定相邻时域单元间的重复传输，还可以是不相邻时域单元间的重复传输。换言之，时域单元间的重复传输，指的是不同时域单元间的重复传输。对于时域单元间的重复传输，不同时域单元内传输的同一数据可以携带相同的冗余版本(redundancy version，RV)号，也可以携带不同的RV号。
其中，时域单元可以是时隙(slot)或mini-slot等，一个slot可以包括正整数个符号，例如7个、14个、6个或12个，mini-slot包括的符号数小于slot包括的符号数，例如slot包括14个符号，mini-slot包括7个符号。图1和图2中时间单元以包括14个符号的slot 为例，本申请所涉及的时间单元也以包括14个符号的slot为例。其中，符号可以是正交频分复用(orthogonal frequency division multiplexing，OFDM)符号、离散傅里叶变换扩频的正交频分复用(discrete Fourier transform spread spectrum orthogonal frequency division multiplexing，DFT-S-OFDM)符号等。本申请实施例中以OFDM符号为例进行说明，其他符号与之类似。
(2)预配置时域资源、实际接收时域资源、实际发送时域资源
预配置时域资源指的是网络设备为终端设备配置或分配的，通过资源指示信息进行指示或确定的，可能是实际使用的时域资源，也可能不是实际使用的时域资源。若预配置时域资源与其他数据的时域资源不存在重叠时域资源，那么预配置时域资源为实际使用的时域资源；若预配置时域资源与其他数据的时域资源存在重叠时域资源，实际使用的时域资源视情况以及协议约定而定。
实际接收时域资源，指的是在预配置时域资源与其他数据的时域资源存在重叠时域资源的情况下，终端设备接收数据实际使用的时域资源。同理，实际发送时域资源指的是该情况下，网络设备发送数据实际使用的时域资源。
(3)重叠(overlap)时域资源
在重复传输场景中，一个TRP除了可以对同一数据进行重复传输外，还可以传输其他数据，那么可能导致重复传输的数据的时频资源与其他数据的时频资源存在重叠时频资源，进而可能导致重叠时频资源上不知是进行重复传输还是传输其他数据，影响重复传输的数据的可靠性，影响其他数据的正常传输。
示例性的，可参见图3，为预配置时域资源与调度时域资源存在重叠时域资源的示例图。图3中，预配置时域资源是为重复传输的数据配置的时域资源，由资源指示信息指示或确定，包括重复传输的每个数据的时域资源；调度时域资源是为其他数据配置的时域资源，由配置信息指示或确定。在资源指示信息指示预配置时域资源之后，配置信息指示的调度时域资源与预配置时域资源存在重叠，将重叠的这部分时域资源称为重叠时域资源。重叠可以是部分重叠，例如图3的(a)中，重复传输的第二个数据的预配置时域资源与调度时域资源是部分重叠；重叠也可以是完全重叠，例如图3的(b)中，重复传输的第二个数据的时域资源与调度时域资源是完全重叠。
图3中，重复传输的第二个数据由TRP 2发送，TRP 2在调度时域资源上传输其他数据，即重复传输的第二个数据以及其他数据由同一个TRP传输，实际重复传输的第二个数据与其他数据可以由不同的TRP传输。可以理解的是，重叠可以是同一TRP重复传输的数据的预配置时域资源与调度时域资源的重叠，也可以是TRP 1重复传输的数据的预配置时域资源与TRP 2调度时域资源的重叠。
资源指示信息与配置信息可以由同一TRP发送，也可以由不同TRP发送，例如TRP1发送资源指示信息，TRP2发送配置信息。
需要说明的是，重叠时域资源这个名称并不构成对本申请实施例的限定，例如还可以称为冲突时域资源等，其他用于描述重叠时域资源本质的名称也应落入本申请实施例的保护范围。
本申请实施例所涉及的数据可以包括但不限于物理下行共享信道(physical downlink  shared channel，PDSCH)数据、物理上行共享信道(physical uplink shared channel，PUSCH)数据、控制信息、参考信号等。其他数据可以理解为非重复传输数据。
(4)打孔方式
网络设备按照配置资源发送数据，但是实际发送数据时，在配置资源中的某些资源上不发送数据，该数据发送方式即为以打孔方式发送数据，以打孔方式发送数据的位置即为打孔位置。对终端设备而言，若终端设备不知晓网络设备以打孔方式发送数据，则终端设备会透明的认为打孔位置上有数据，从而获取数据进行译码。若终端设备知晓网络设备以打孔方式发送数据以及打孔位置，则终端设备会认为打孔位置上承载功率为零的数据，即以打孔方式接收数据。
因为打孔位置通常是有限的，数据经过编码后，存在一定的冗余，同时数据有循环冗余校验(cyclic redundancy check，CRC)，因此少量的打孔不会影响数据译码的正确率。
以打孔方式发送数据或接收数据的资源可以是时频资源、时域资源、频域资源、空域资源、码域资源等。本申请实施例以时频资源为例。
示例性的，网络设备通过时域资源中的某10个OFDM符号向终端设备发送数据时，在这10个OFDM符号的第二个OFDM符号上以打孔方式发送，即在第二个OFDM符号上不发送数据，第二个OFDM符号即为打孔位置。终端设备在对这10个OFDM符号承载的数据进行解码时，认为第二个OFDM符号上承载的数据功率为零。
图3中，预配置时域资源与调度时域资源存在重叠时域资源，导致重复传输的数据与其他数据存在传输冲突，即网络设备在重叠时域资源上不知是发送重复传输的数据还是发送其他数据，终端设备不知重叠时域资源上承载的是重复传输的数据还是其他数据。鉴于此，本申请实施例提供一种数据传输方法及其装置，在重复传输的数据的时域资源与其他非重复传输数据的时域资源存在重叠时域资源时，可优先传输其他非重复传输数据，进而避免传输冲突，从而可以确保数据传输的可靠性、完整性。
本申请实施例可应用于各种通信系统中，例如5G系统，也可以称为新空口(new radio，NR)系统，或者可用于设备到设备(device to device，D2D)系统，机器到机器(machine to machine，M2M)系统等。随着通信技术的不断发展，本申请实施例还可用于未来通信系统，例如未来网络等。
在第三代合作伙伴计划(the 3rd generation partnership project，3GPP)中，车与任何事物通信的车联网(vehicle to everything，V2X)技术(X代表任何事物)被提出。V2X系统中的通信方式统称为V2X通信。例如，该V2X通信包括：车辆与车辆(vehicle to vehicle，V2V)之间的通信，车辆与路边基础设施(vehicle to infrastructure，V2I)之间的通信、车辆与行人之间的通信(vehicle to pedestrian，V2P)或车辆与网络(vehicle to network，V2N)之间的通信等。V2X系统中所涉及的终端设备之间进行的通信被广泛称为侧行链路(slidelink，SL)通信。本申请实施例还可应用到车联网中，也就是说，本申请实施例所涉及的终端设备也可以为车辆或应用于车辆中的车辆组件，例如车载终端。
目前，车辆或车辆组件可以通过V2V、V2I、V2P或者V2N通信方式，及时获取路况信息或接收服务信息，这些通信方式可以统称为V2X通信。图4为应用本申请实施例的一种网络架构示意图，该示意图为一种V2X系统的示意图。该示意图包括V2V通信、V2P 通信以及V2I/N通信。V2X通信针对以车辆为代表的高速设备，是未来对通信时延要求非常高的场景下应用的基础技术和关键技术，如智能汽车、自动驾驶、智能交通运输系统等场景。
如图4所示，车辆或车辆组件之间通过V2V通信。车辆或车辆组件可以将自身的车速、行驶方向、具体位置、是否踩了紧急刹车等信息广播给周围车辆，周围车辆的驾驶员通过获取该类信息，可以更好的感知视距外的交通状况，从而对危险状况做出提前预判进而做出避让；车辆或车辆组件与路侧基础设施通过V2I通信，路边基础设施，可以为车辆或车辆组件提供各类服务信息和数据网络的接入。其中，不停车收费、车内娱乐等功能都极大的提高了交通智能化。路边基础设施，例如，路侧单元(road side unit，RSU)包括两种类型：一种是终端设备类型的RSU。由于RSU分布在路边，该终端设备类型的RSU处于非移动状态，不需要考虑移动性；另一种是网络设备类型的RSU。该网络设备类型的RSU可以给与网络设备通信的车辆或车辆组件提供定时同步及资源调度。车辆或车辆组件与人通过V2P通信；车辆或车辆组件与网络通过V2N通信，V2N可以与上述的V2I统称为V2I/N。
请参见图5，为应用本申请实施例的另一种网络架构示意图。该网络架构可包括三个网络设备和一个终端设备，图5所示的设备数量和形态用于举例并不构成对本申请实施例的限定，实际应用中可以包括一个、两个或更多个网络设备，两个或更多个终端设备。其中：网络设备可用于在网络设备控制器(未示出)的控制下，通过无线接口与终端设备通信。在一些实施例中，网络设备控制器可以是核心网的一部分，也可以集成到网络设备中。网络设备可用于通过回传(backhaul)接口向核心网传输控制信息或者用户数据。网络设备之间也可以通过回传(backhaul)接口，直接地或者间接地，相互通信。另外，多个网络设备可以调度同一个终端设备，即多站协作传输场景。在多站协作传输场景，为不同终端设备提供服务的多个TRP可以相同，也可以不相同，例如为终端设备1提供服务的TRP为TRP1和TRP2，为终端设备2提供服务的TRP为TRP2和TRP3。应用在本申请实施例中，多个网络设备调度同一个终端设备，实现时域上的重复传输。
本申请实施例涉及的网络设备可以是图4中的基础设备，也可以是NR系统中的基站，还可以是未来通信系统中的基站。基站可能有多种形式，比如宏基站、微基站、中继站、接入点和TRP等。TRP在一种实现中，可以是网络设备例如基站，还可以是基站的天线面板、面板等。5G系统中，可以部署一个或多个TRP。应用在本申请实施例中，用于实现网络设备的功能的装置可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统。在本申请实施例中，以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的技术方案。
本申请实施例涉及的终端设备还可以称为终端，可以是一种具有无线收发功能的设备。终端设备可以被部署在陆地上，包括室内或室外、手持或车载；也可以被部署在水面上(如轮船等)；还可以被部署在空中(例如飞机、气球和卫星上等)。终端设备可以是用户设备(user equipment，UE)。其中，UE包括具有无线通信功能的手持式设备、车载设备、可穿戴设备或计算设备。示例性地，UE可以是手机(mobile phone)、平板电脑或带无线收发功能的电脑。终端设备还可以是虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程医疗中的 无线终端、智能电网中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、物联网(Internet of things，IoT)中的无线终端、车联网中的无线终端等等。本申请实施例中，用于实现终端设备的功能的装置可以是终端设备，也可以是能够支持终端设备实现该功能的装置，例如芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例中，以用于实现终端设备的功能的装置是终端设备为例，描述本申请实施例提供的技术方案。
本申请实施例可以应用于多站重复传输的场景，也可以应用于单站重复传输的场景，在具体介绍时以多站重复传输场景为例。本申请实施例应用在时域，在重复传输的数据与其他非重复传输数据存在重叠时域资源时，优先传输其他非重复传输数据，同时给出如何进行重复传输的解决方案。本申请实施例也可以应用于频域、空域、码域等。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
基于图4或图5所示的网络架构，下面将结合图6-图14对本申请实施例提供的数据传输方法进行详细介绍。需要说明的是，介绍过程中，终端设备与网络设备之间交互的信息或数据的名称用于举例，预配置资源、调度资源、实际接收资源、实际发送资源等名称也用于举例，并不构成对本申请实施例的限定。
请参见图6，为本申请实施例提供的一种数据传输方法的流程示意图，该流程可以包括但不限于如下步骤：
步骤601，网络设备向终端设备发送资源指示信息。相应的，终端设备从网络设备接收资源指示信息。
其中，资源指示信息用于指示第一下行数据的预配置时域资源，该预配置时域资源用于重复传输第一下行数据。资源指示信息可以理解为，用于指示网络设备为终端设备重复传输第一下行数据所配置或分配的时域资源。网络设备可周期性地为终端设备配置第一下行数据的预配置时域资源，也可以半静态地为终端设备配置第一下行数据的预配置时域资源，然后通过资源指示信息进行指示。
在一种可能的实现方式中，该资源指示信息通过下行控制信息(downlink control information，DCI)和高层信令来指示，DCI是一种动态控制信令。该DCI信令中包括开始和长度指示(start and length indicator，SLIV)，SLIV用于指示一个时隙(slot)上用于承载物理下行共享信道(physical downlink shared channel，PDSCH)或物理上行共享信道(physical uplink shared channel，PUSCH)数据的时域资源符号，在NR系统中具体指示的是从一个slot的第几个OFDM符号开始承载数据，从开始OFDM符号算起数据一共占用多少个连续的OFDM符号。应用在本申请实施例中，SLIV用于指示承载第一个第一下行数据的起始OFDM符号以及第一个第一下行数据占用的OFDM符号长度(或称为OFDM符号数量)，第一个第一下行数据具体为重复传输的多个第一下行数据中的第一个第一下行数据。该高层信令也可以描述为重复传输参数等，重复传输参数可以包括但不限于重复次数、相邻两个第一下行数据之间的时域间隔等。该方式下，根据高层信令和DCI中的SLIV，可以确定 重复传输的每个第一下行数据的预配置时域资源。
其中，PDSCH数据可以描述为通过PDSCH传输的数据，或可以简单地描述为PDSCH。同理，PUSCH数据可以描述为通过PUSCH传输的数据，或可以简单地描述为PUSCH。
在一种可能的实现方式中，该资源指示信息通过DCI信令来指示，该DCI信令中包括SLIV和重复传输参数，SLIV和重复传输参数可参见上一种方式中的描述。该方式下，根据DCI所包括的SLIV和重复传输参数可以确定重复传输的每个第一下行数据的预配置时域资源。
在一种可能的实现方式中，该资源指示信息可直接指示重复传输的每个第一下行数据的预配置时域资源，即网络设备针对重复传输的每个第一下行数据均配置时域资源。
上述三种资源指示信息的实现方式用于举例，并不构成对本申请实施例的限定，实际应用中可能还存在其他实现方式。
第一下行数据的预配置时域资源是一个时域资源集合，包括重复传输的每个第一下行数据的预配置时域资源。假设重复传输N个第一下行数据，N为正整数，第i个第一下行数据表示重复传输的任意一个第一下行数据，i为大于等于1小于等于N的整数，那么第一下行数据的预配置时域资源包括第一个第一下行数据的时域资源，第二个第一下行数据的时域资源，…，第N个第一下行数据的时域资源。
其中，第一下行数据为网络设备向终端设备发送的数据，可以描述为PDSCH、PDSCH数据或通过PDSCH传输的数据等，本申请实施例以第一下行数据描述为PDSCH为例。第一下行数据还可以描述为传输块(transport block，TB)，传输块承载数据，数据可以描述为PDSCH、PDSCH数据或通过PDSCH传输的数据等。
需要说明的是，步骤601为可选步骤，网络设备可以向终端设备发送资源指示信息，终端设备可以根据资源指示信息确定第一下行数据的预配置时域资源，终端设备也可以通过其他方式确定第一下行数据的预配置时域资源。
对于单站重复传输的场景，网络设备可通过动态信令、周期性信令或半静态信令中的一种或多种，配置第一下行数据的预配置时域资源，并向终端设备发送资源指示信息。
对于多站重复传输的场景，网络设备可以通过动态信令、周期性信令或半静态信令中的一种或多种，配置第一下行数据的预配置时域资源，向终端设备发送资源指示信息，多站重复传输场景中的各个TRP都知道传输第一下行数据的预配置时域资源。
步骤602，终端设备确定第一下行数据的预配置时域资源。
终端设备可根据资源指示信息确定第一下行数据的预配置时域资源，具体可确定每个第一下行数据的预配置时域资源。
若资源指示信息通过DCI和高层信令指示，DCI包括SLIV，那么终端设备根据SLIV确定第一个第一下行数据的起始OFDM符号以及需要占用的OFDM符号长度，即确定第一个第一下行数据的时域资源。之后，终端设备可根据高层信令所包括的重复次数确定第二个第一下行数据的时域资源，…，最后一个第一下行数据的时域资源，进而确定每个第一下行数据的时域资源。例如，重复传输N个第一下行数据，重复次数可为N-1次或N次，若定义重复传输1次为传输两个第一下行数据，那么重复次数为N-1次；若定义重复传输1次为传输1个第一下行数据，那么重复次数为N次。或者，终端设备可根据高层信令所 包括的相邻两个第一下行数据之间的时域间隔确定第二个第一下行数据的时域资源，…，最后一个第一下行数据的时域资源，进而确定每个第一下行数据的时域资源。相邻两个第一下行数据之间的时域间隔可通过OFDM符号表示，例如相邻两个第一下行数据之间的时域间隔为两个OFDM符号。或者，终端设备可根据高层信令所包括的重复次数和相邻两个第一下行数据之间的时域间隔确定第二个第一下行数据的时域资源，…，最后一个第一下行数据的时域资源，进而确定每个第一下行数据的时域资源。此处的时域间隔可以表示相邻两个第一下行数据之间起始符号之间的符号间隔，也可以表示第i个第一下行数据的结束符号与第i+1个第一下行数据的起始符号之间的符号间隔，i小于等于N。
若资源指示信息通过DCI指示，DCI包括SLIV和重复传输参数，那么终端设备根据SLIV确定第一个第一下行数据的时域资源，之后根据重复传输参数确定第二个第一下行数据的时域资源，…，最后一个第一下行数据的时域资源，进而确定每个第一下行数据的时域资源。
若资源指示信息直接指示重复传输的每个第一下行数据的预配置时域资源，那么终端设备根据资源指示信息可直接确定出重复传输的每个第一下行数据的预配置时域资源。
步骤603，网络设备向终端设备发送配置信息。相应的，终端设备从网络设备接收配置信息。
网络设备在为终端设备配置第一下行数据的预配置时域资源之后，为终端设备配置调度时域资源，并通过配置信息对调度时域资源进行指示，即配置信息用于指示调度时域资源。可选的，网络设备可在执行步骤601之后执行步骤603，也可在步骤601之前执行步骤603。
可选的，调度时域资源可以是网络设备为终端设备动态配置的，即在需要时动态为终端设备配置调度时域资源，例如非周期配置等。调度时域资源也可以是网络设备通过无线资源控制(radio resource control，RRC)信令配置的，例如根据RRC信令将该调度时域资源配置为上行数据。
在一种可能的实现方式中，调度时域资源为传输第二下行数据的时域资源，第二下行数据的优先级高于第一下行数据的优先级。该方式下，调度时域资源是网络设备为终端设备动态配置的。
示例性的，第二下行数据可以是紧急业务数据。例如网络设备在为终端设备配置第一下行数据的预配置时域资源之后，某个紧急业务的紧急业务数据需要立即发送至终端设备，网络设备便配置传输该紧急业务数据的调度时域资源，并通过配置信息进行指示。由于紧急业务数据较第一下行数据更为紧急，因此可以认为紧急业务数据的优先级高于第一下行数据的优先级。
示例性的，第二下行数据可以是非周期的参考信号，例如非周期(aperiodic，AP)信道状态信息参考信号(channel state information reference signal，CSI-RS)、相位跟踪参考信号(phase tracking reference signal，PT-RS)、解调参考信号(demodulation reference signal，DMRS)等。其中，CSI-RS是用于终端设备测量信道状态信息的下行参考信号，终端设备可将测量的信道状态信息上报至网络设备。信道状态信息可以包括信道质量指示符(channel quality indicator，CQI)、预编码矩阵指示符(precoding matrix indicator，PMI)和秩指示(rank  indication，RI)等。DMRS用于控制信道和数据信道的相关解调。PT-RS用于校正由于晶振相位误差引起的干扰。本申请实施例以非周期的参考信号为AP CSI-RS为例。
在一种可能的实现方式中，调度时域资源用于上行传输，也可以描述为调度时域资源用于承载上行数据。该方式下，调度时域资源是网络设备通过RRC信令配置的。终端设备可以在该调度时域资源上传输上行数据，也可以不在该调度时域资源上传输上行数据。调度时域资源与第一下行数据的预配置时域资源存在重叠时域资源，可以理解为，在第一下行数据的预配置时域资源上包含了配置成承载上行数据的调度时域资源，该调度时域资源仅用于承载上行数据，不能用于第一下行数据的传输。
步骤604，终端设备根据配置信息确定调度时域资源。
终端设备在接收到配置信息的情况下，根据配置信息确定调度时域资源。
步骤605，网络设备确定出预配置时域资源与调度时域资源存在重叠时域资源。
网络设备在配置调度时域资源之后，可判断第一下行数据的预配置时域资源与调度时域资源是否重叠(overlap)，具体判断某个第一下行数据的预配置时域资源与调度时域资源是否重叠，重叠包括部分重叠和完全重叠，部分重叠可参见图3的(a)所示，完成重叠可参见图3的(b)所示。若确定出预配置时域资源与调度时域资源存在重叠时域资源，可选的，由于第二下行数据的优先级高于第一下行数据，那么网络设备执行步骤607，在调度时域资源上发送第二下行数据。若确定出预配置时域资源与调度时域资源不存在重叠时域资源，可选的，重复传输的第一下行数据与第二下行数据不会存在传输冲突，那么网络设备可在第一下行数据的预配置时域资源上发送第一下行数据，在调度时域资源上发送第二下行数据；或可选的，重复传输的第一下行数据与上行数据不会存在冲突，那么网络设备在第一下行数据的预配置时域资源上正常发送第一下行数据。
步骤606，终端设备确定出预配置时域资源与调度时域资源存在重叠时域资源。
终端设备在确定出第一下行数据的预配置时域资源之后，并没有立即在第一下行数据的预配置时域资源上接收第一下行数据，在确定出调度时域资源之后，也没有立即在调度时域资源上接收第二下行数据，而是判断第一下行数据的预配置时域资源与调度时域资源是否重叠。若确定出预配置时域资源与调度时域资源存在重叠时域资源，可选的，由于第二下行数据的优先级高于第一下行数据，那么终端设备可执行步骤608，在调度时域资源上接收第二下行数据。若确定出预配置时域资源与调度时域资源不存在重叠时域资源，可选的，重复传输的第一下行数据与第二下行数据不会存在传输冲突，那么终端设备在第一下行数据的预配置时域资源上接收第一下行数据，在调度时域资源上接收第二下行数据；或可选的，重复传输的第一下行数据与上行数据不会存在冲突，那么终端设备在第一下行数据的预配置时域资源上正常接收第一下行数据。
步骤607，网络设备在调度时域资源上，发送数据。
网络设备在确定出存在重叠时域资源的情况下，可选的，在调度时域资源用于传输第二下行数据，第二下行数据的优先级高于第一下行数据时，在调度时域资源上，向终端设备发送第二下行数据。
步骤608，终端设备在调度时域资源上，接收数据。
终端设备在确定出存在重叠时域资源的情况下，在调度时域资源上，从网络设备接收 第二下行数据。
在图6所示的实施例中，在预配置时域资源与调度时域资源存在重叠时域资源的情况下，优先在调度时域资源上传输第二下行数据，或在调度时域资源上承载上行数据。至于重复传输的第一下行数据如何传输将在实施例一至实施例三进行介绍。
示例性的，预配置时域资源用于重复传输N个第一下行数据，第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数。假设第一下行数据在两个时域单元内重复传输，时域单元可以是slot或mini-slot等，本申请实施例中时域单元以slot为例，以一个slot包括14个OFDM符号为例。
实施例一，以打孔方式在重叠资源上传输第一下行数据。网络设备以打孔方式在重叠资源上发送第一下行数据。相应的，终端设备以打孔方式在重叠资源上接收第一下行数据。其中，重叠资源除了可以是重叠时域资源外，还可以是重叠时频资源、重叠频域资源、重叠码域资源等。
请参见图7-1，为本申请实施例提供的在时频资源上以打孔方式传输的示例图。图7-1所示资源栅格在时域上包括一个slot(包括14个OFDM符号)，在频域上包括12个子载波，该资源栅格的基本单元为资源元素(resource element，RE)，即一个小方格。一个RE在时域上占用一个OFDM符号，在频域上占用一个子载波，一个RE可表示为(k，l)，k表示子载波索引，l表示符号索引。假设OFDM符号索引和子载波索引均从“0”开始，第一个第一下行数据的预配置时频资源为{(0,0)，(1,0)，(2,0)，(3,0)，(0,1)，(1,1)，(2,1)，(3,1)}，第二个第一下行数据的预配置时频资源为{(0,5)，(1,5)，(2,5)，(3,5)，(0,6)，(1,6)，(2,6)，(3,6)}，调度时域资源为{(0,5)，(1,5)，(0,6)，(1,6)}，重叠时域资源为{(0,5)，(1,5)，(0,6)，(1,6)}。网络设备在第二个第一下行数据的预配置时域资源上发送第二个第一下行数据时，在时频资源{(0,5)，(1,5)，(0,6)，(1,6)}上以打孔方式发送，相应的，终端设备在时频资源{(0,5)，(1,5)，(0,6)，(1,6)}上以打孔方式接收。
其中，时频资源{(0,5)，(1,5)，(0,6)，(1,6)}即为打孔位置，或描述为被打孔的RE。若终端设备不知晓网络设备以打孔方式发送，那么终端设备会认为被打孔的RE上承载有数据，从而获取数据进行译码，实际上被打孔的RE是干扰，从而影响计算干扰的准确性。若终端设备知晓网络设备以打孔方式发送，那么终端设备会认为被打孔的RE上承载功率为零的数据，这样被打孔的RE上无干扰，从而使得计算干扰更加准确，使得打孔对性能的影响较小。若调度时域资源为AP CSI-RS的时域资源，调度时域资源占用的RE更少，使得打孔对性能的影响更小。
协议中可以规定在第一下行数据的预配置资源与调度资源存在重叠资源时，以打孔方式传输第一下行数据，那么终端设备可知晓网络设备以打孔方式发送，也可根据预配置资源和调度资源确定打孔位置(即重叠资源的位置)。
可选的，网络设备也可以通过信令(半静态信令或者动态信令)通知终端设备，当第一下行数据的预配置资源与调度资源存在重叠资源时，采用打孔方式传输第一下行数据。
一般来说，打孔是RE级的打孔，例如图7-1所示，在时域OFDM符号和频域子载波上均打孔。打孔也可以是时域OFDM符号级的打孔或频域子载波级的打孔。
请参见图7-2，为本申请实施例提供的在时域资源上以打孔方式传输的示例图。图7-2 中，第二个第一下行数据的预配置时域资源与调度时域资源重叠，即i＝2。
对网络设备而言，根据重叠时域资源，确定第二个第一下行数据的实际发送时域资源，第二个第一下行数据的实际发送时域资源即为第二个第一下行数据的预配置时域资源。第二个第一下行数据的实际发送时域资源包括重叠时域资源，网络设备以打孔方式在重叠时域资源上发送第二个第一下行数据。
对终端设备而言，根据重叠时域资源，确定第二个第一下行数据的实际接收时域资源，第二个第一下行数据的实际接收时域资源即为第二个第一下行数据的预配置时域资源。第二个第一下行数据的实际接收时域资源包括重叠时域资源，终端设备以打孔方式在重叠时域资源上发送第二个第一下行数据。可以理解的是，终端设备当做调度时域资源传输的第二下行数据或承载的上行数据对第二个第一下行数据没有影响，正常译码。
协议中可以规定在第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源时，网络设备和终端设备以打孔方式传输第i个第一下行数据。
可选的，如果第二个第一下行数据的实际发送时域资源包括重叠时域资源，且重叠时域资源上未承载解调参考信号(demodulation reference signal，DMRS)，那么网络设备以打孔方式在重叠时域资源上发送第二个第一下行数据。相应的，终端设备以打孔方式在重叠时域资源上接收第二个第一下行数据。其中，DMRS可以是PDSCH对应的DMRS，用于PDSCH相干解调的下行信道估计，即用于第一下行数据相干解调的下行信道估计。DMRS可以内嵌在PDSCH的时域资源中，即第一下行数据的预配置时域资源上可以承载DMRS，也可以未内嵌在PDSCH的时域资源中，视具体情况而定。重叠时域资源上未承载DMRS，意味着第二下行数据不会影响第二个第一下行数据的信道估计，因此以打孔方式在重叠时域资源上传输。若重叠时域资源上承载有DMRS，意味着第二下行数据会影响第二个第一下行数据的信道估计，该种情况下可采用实施例二或实施例三。
示例性的，图7-2的(a)中，第二个第一下行数据的预配置时域资源为第一个slot的第八个和第九个OFDM符号，调度时域资源为第一个slot的第八个OFDM符号，那么第一个slot的第八个OFDM符号即为重叠时域资源。网络设备在第一个slot的第八个和第九个OFDM符号上发送第二个第一下行数据时，在第八个OFDM符号上以打孔方式发送。相应的，终端设备在第一个slot的第八个和第九个OFDM符号上接收第二个第一下行数据时，在第八个OFDM符号上以打孔方式接收。
示例性的，图7-2的(b)中，第二个第一下行数据的预配置时域资源为第一个slot的第八个和第九个OFDM符号，调度时域资源为第一个slot的第八个和第九个OFDM符号，那么第一个slot的第八个和第九个OFDM符号即为重叠时域资源。网络设备在第一个slot的第八个和第九个OFDM符号上发送第二个第一下行数据时，在第八个和第九个OFDM符号上以打孔方式发送。相应的，终端设备在第一个slot的第八个和第九个OFDM符号上接收第二个第一下行数据时，在第八个和第九个OFDM符号上以打孔方式接收。
图7-2的(a)为部分重叠时以打孔方式传输，图7-2的(b)为完全重叠时以打孔方式传输。
在第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源时，以打孔方式传输第i个第一下行数据，使得终端设备计算的干扰更加准确，减少对性能的影响。
对于重复传输的场景，假设第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源时，以打孔方式传输第i个第一下行数据。进一步可选的，该方案可以应用于多站重复传输的场景中，例如针对当前重复传输激活的传输配置指示(transmission configuration indication，TCI)状态超过1个，可以认为是多站重复传输场景；再例如针对当前重复传输有多个准共址(quasi co-located，QCL)状态，可以认为是多站重复传输场景。
在多站重复传输的场景中，在多个TRP之间存在理想回传(ideal backhaul)链路的情况下，多个TRP之间可直接进行通信，这样传输第i个第一下行数据的TRP可以与其他TRP进行通信，获知预配置时域资源与其他TRP的调度时域资源是否存在重叠时域资源，例如可以获知第i个第一下行数据的预配置时域资源与调度时域资源是否存在重叠时域资源，是否以打孔方式发送第i个第一下行数据。在多个TRP之间存在非理想回传(non ideal backhaul)链路的情况下，多个TRP进行重复传输时可通过终端设备的反馈进行调度，例如TRP 1配置TRP 2传输第i个第一下行数据，在第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源时，终端设备向TRP 2反馈传输第i个第一下行数据的时域资源与调度时域资源存在重叠的指示信息，TRP 2在接收到该指示信息时，以打孔方式发送第i个第一下行数据。这两种情况下的处理对于后续两种实施例也适用。
实施例二，网络设备避开调度时域资源传输第一下行数据，相应的，终端设备避开调度时域资源接收第一下行数据，使得第一下行数据的实际时域资源与调度时域资源不重叠，避免资源冲突。本申请实施例将这种方式作为免冲突方式，免冲突方式可分为四种免冲突方式，下面将通过图8-图11对四种免冲突方式进行介绍。
免冲突方式一
对网络设备而言，根据重叠时域资源，确定每个第一下行数据的实际发送时域资源，在每个第一下行数据的实际发送时域资源上，发送第二个第一下行数据。其中，每个第一下行数据的实际发送时域资源与调度时域资源均不重叠。网络设备可通过移动每个第一下行数据的预配置时域资源，将移动后的每个第一下行数据的预配置时域资源确定为每个第一下行数据的实际发送时域资源。
对终端设备而言，根据重叠时域资源，确定每个第一下行数据的实际接收时域资源，在每个第一下行数据的实际接收时域资源上，接收第二个第一下行数据。其中，每个第一下行数据的实际接收时域资源与调度时域资源均不重叠。
协议中可以规定在第一下行数据的预配置资源与调度时域资源存在重叠资源时，网络设备基于重叠时域资源移动每个第一下行数据的预配置时域资源，得到每个第一下行数据的实际发送时域资源，每个第一下行数据的实际发送时域资源与调度时域资源均不重叠。相应的，终端设备基于重叠时域资源移动每个第一下行数据的预配置时域资源，得到每个第一下行数据的实际接收时域资源，每个第一下行数据的实际接收时域资源与调度时域资源均不重叠。
移动之前，网络设备和终端设备需确定移动规则，例如移动规则为向前移动M个符号，再例如移动规则为向后移动M个符号。假设第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源，M的取值与移动方向、第i个第一下行数据的预配置时域资源的位置以及调度时域资源的位置有关。例如，向后移动，M为从第i个第一下行数据的 预配置时域资源的起始符号至调度时域资源的最后一个符号所占的符号长度，符号长度正整数。再例如，向前移动，M为从第i个第一下行数据的预配置时域资源的最后一个符号至调度时域资源的起始符号所占的符号长度，符号长度为正整数。
网络设备和终端设备在确定移动规则时，需要避免移动后的第j个第一下行数据的预配置时域资源与移动后的第j-1个第一下行数据的预配置时域资源存在重叠，与移动后的第j+1个第一下行数据的预配置时域资源存在重叠，与调度时域资源存在重叠，与其他信号或数据的时域资源存在重叠。第j个第一下行数据为N个第一下行数据中的任意一个。在确定移动规则时，还需避免移动后的第j个第一下行数据的预配置时域资源跨slot边界，因为终端设备不期望跨slot接收第一下行数据。
在确定移动规则之后，网络设备和终端设备可对每个第一下行数据的预配置时域资源进行移动，并保证每个第一下行数据的实际时域资源既不与调度时域资源重叠，也不与其他信号或数据的时域资源重叠，还保证相邻两个第一下行数据的实际时域资源之间不重叠。协议中也可以规定一种移动规则，例如向后移动M个符号，那么网络设备和终端设备可按照该移动规则对每个第一下行数据的预配置时域资源移动M个符号。
可以理解的是，免冲突方式一是整体移动第一下行数据的预配置时域资源，以避免与调度时域资源重叠的方式。
以整体后移为例。请参见图8，为本申请实施例提供的免冲突方式一的示例图。图8中，第二个第一下行数据的预配置时域资源与调度时域资源重叠，即i＝2。
示例性的，图8的(a)中，第二个第一下行数据的预配置时域资源为第一个slot的第九个和第十个OFDM符号，调度时域资源为第一个slot的第十个OFDM符号，那么第一个slot的第十个OFDM符号即为重叠时域资源，M＝2。基于重叠时域资源，将每个第一下行数据的预配置时域资源后移两个OFDM符号，得到每个第一下行数据的实际时域资源，每个第一下行数据的实际时域资源与调度时域资源均不重叠，相邻两个第一下行数据的实际时域资源也不重叠。图8的(a)以整体后移两个OFDM符号为例，移动规则为向后移动两个OFDM符号。若移动方向为向前移动，则整体向前移动一个OFDM符号，移动规则为向前移动一个OFDM符号。
示例性的，图8的(b)中，第二个第一下行数据的预配置时域资源为第一个slot的第九个和第十个OFDM符号，调度时域资源为第一个slot的第九个OFDM符号，那么第一个slot的第九个OFDM符号即为重叠时域资源，M＝1。基于重叠时域资源，将每个第一下行数据的预配置时域资源后移一个OFDM符号，得到每个第一下行数据的实际时域资源，每个第一下行数据的实际时域资源与调度时域资源均不重叠，相邻两个第一下行数据的实际时域资源也不重叠。图8的(b)以整体后移一个OFDM符号为例，移动规则为向后移动一个OFDM符号。若移动方向为向前移动，则整体向前移动两个OFDM符号，移动规则为向前移动两个OFDM符号。
在第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源时，以免冲突方式传输每个第一下行数据，使得每个第一下行数据的实际时域资源与调度时域资源均不重叠，从而避免每个第一下行数据与第二下行数据之间的传输冲突。
免冲突方式二
请参见图9，为本申请实施例提供的免冲突方式二的示例图。图9中，第二个第一下行数据的预配置时域资源与调度时域资源重叠，即i＝2。
对网络设备而言，根据重叠时域资源，确定第二个第一下行数据的实际发送时域资源，在第二个第一下行数据的实际发送时域资源上，发送第二个第一下行数据。其中，第二个第一下行数据的实际发送时域资源与调度时域资源不重叠。网络设备可通过移动第二个第一下行数据的预配置时域资源，将移动后的第二个第一下行数据的预配置时域资源确定为第二个第一下行数据的实际发送时域资源。
对终端设备而言，根据重叠时域资源，确定第二个第一下行数据的实际接收时域资源，在第二个第一下行数据的实际接收时域资源上，接收第二个第一下行数据。其中，第二个第一下行数据的实际接收时域资源与调度时域资源不重叠。终端设备可在重叠时域资源的前后查找可用的时域资源，进而确定第二个第一下行数据的实际接收时域资源。
协议中可以规定在第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源时，网络设备基于重叠时域资源移动第i个第一下行数据的预配置时域资源，得到第i个第一下行数据的实际发送时域资源，第i个第一下行数据的实际发送时域资源与调度时域资源不重叠。相应的，终端设备基于重叠时域资源移动第i个第一下行数据的预配置时域资源，得到第i个第一下行数据的实际接收时域资源，第i个第一下行数据的实际接收时域资源与调度时域资源不重叠。协议中还可以规定针对第i个第一下行数据的预配置时域资源的移动规则，例如该移动规则为向后移动M个符号，M即为从第i个第一下行数据的预配置时域资源的起始符号至调度时域资源的最后一个符号所占的符号长度，该符号长度为正整数。将第i个第一下行数据的预配置时域资源后移M个符号得到第i个第一下行数据的实际时域资源，第i个第一下行数据的实际时域资源不仅与调度时域资源不重叠，还与第i+1个时域资源不重叠，还与其他信号或数据的时域资源不重叠。并且，第i个第一下行数据的实际时域资源应避免跨slot边界，因为终端设备不期望跨slot接收第一下行数据。如果重复传输的某个第一下行数据遇到slot边界，则该第一下行数据的实际时域资源的大小比该第一下行数据的预配置时域资源小。
可以理解的是，免冲突方式二是移动重叠时域资源对应的第i个第一下行数据的预配置时域资源，以避免与调度时域资源重叠的方式。即移动一个第一下行数据的预配置时域资源。
以下以一个第一下行数据的预配置时域资源向后移动为例。
示例性的，图9的(a)中，第二个第一下行数据的预配置时域资源为第一个slot的第九个和第十个OFDM符号，调度时域资源为第一个slot的第十个OFDM符号，那么第一个slot的第十个OFDM符号即为重叠时域资源，M＝2。基于重叠时域资源，将第二个第一下行数据的预配置时域资源后移两个OFDM符号，得到第二个第一下行数据的实际时域资源，为第一个slot的第十一个和第十二个OFDM符号，与调度时域资源不重叠。
示例性的，图9的(b)中，第二个第一下行数据的预配置时域资源为第一个slot的第九个和第十个OFDM符号，调度时域资源为第一个slot的第九个OFDM符号，那么第一个slot的第九个OFDM符号即为重叠时域资源，M＝1。基于重叠时域资源，将第二个第一下行数据的预配置时域资源后移一个OFDM符号，得到第二个第一下行数据的实际时域资 源，为第一个slot的第十个和第十一个OFDM符号，与调度时域资源不重叠。
示例性的，图9的(c)中，第二个第一下行数据的预配置时域资源为第一个slot的第九个和第十个OFDM符号，调度时域资源为第一个slot的第九个和第十个OFDM符号，那么第一个slot的第九个和第十个OFDM符号即为重叠时域资源，M＝2。基于重叠时域资源，将第二个第一下行数据的预配置时域资源后移两个OFDM符号，得到第二个第一下行数据的实际时域资源，为第一个slot的第十一个和第十二个OFDM符号，与调度时域资源不重叠。
图9的(a)和图9的(b)为部分重叠时以免冲突方式传输，图9的(c)为完全重叠时以免冲突方式传输。
图9中，第二个第一下行数据的实际时域资源的大小与第二个第一下行数据的预配置时域资源的大小一致，均为两个OFDM符号。在确定M后，可能导致第i个第一下行数据的实际时域资源的大小与第i个第一下行数据的预配置时域资源的大小不一致，这种情况可参见后续对特殊情况的描述。
在第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源时，以免冲突方式传输第i个第一下行数据，使得第i个第一下行数据的实际时域资源与调度时域资源不重叠，从而避免第i个第一下行数据与第二下行数据之间的传输冲突。
免冲突方式三
请参见图10，为本申请实施例提供的免冲突方式三的示例图。图10中，第二个第一下行数据的预配置时域资源与调度时域资源重叠，即i＝2。免冲突方式三与免冲突方式一和免冲突方式二的不同之处在于，免冲突方式三是局部移动，免冲突方式一是整体移动，免冲突方式二是移动一个。免冲突方式三中，对第i个第一下行数据的预配置时域资源以及后续第一下行数据的预配置时域资源进行移动。后续第一下行数据指的是第i个第一下行数据之后的第一下行数据。免冲突方式三中的移动规则可参见免冲突方式一和免冲突方式二中的移动规则，并且，第i个第一下行数据的实际时域资源以及后续第一下行数据的实际时域资源应避免跨slot边界，因为终端设备不期望跨slot接收第一下行数据。如果重复传输的某个第一下行数据遇到slot边界，则该第一下行数据的实际时域资源的大小比该第一下行数据的预配置时域资源小。
示例性的，图10的(a)中，第二个第一下行数据的预配置时域资源为第一个slot的第九个和第十个OFDM符号，调度时域资源为第一个slot的第十个OFDM符号，那么第一个slot的第十个OFDM符号即为重叠时域资源，M＝2。基于重叠时域资源，将第二个第一下行数据的预配置时域资源后移两个OFDM符号，得到第二个第一下行数据的实际时域资源，为第一个slot的第十一个和第十二个OFDM符号，与调度时域资源不重叠。同时，还将第三个第一下行数据的预配置时域资源后移两个OFDM符号，得到第三个下行数据的实际时域资源，为第二个slot的第五个和第六个OFDM符号；将第四个第一下行数据的预配置时域资源后移两个OFDM符号，得到第四个第一下行数据的实际时域资源，为第二个slot的第十一个和第十二个OFDM符号。若第四个第一下行数据之后还有第一下行数据，则还将后续每个第一下行数据的预配置时域资源均后移两个OFDM符号。
示例性的，图10的(b)中，第二个第一下行数据的预配置时域资源为第一个slot的 第九个和第十个OFDM符号，调度时域资源为第一个slot的第九个OFDM符号，那么第一个slot的第九个OFDM符号即为重叠时域资源，M＝1。基于重叠时域资源，将第二个第一下行数据的预配置时域资源后移一个OFDM符号，得到第二个第一下行数据的实际时域资源，为第一个slot的第十个和第十一个OFDM符号，与调度时域资源不重叠。同时，还将第三个第一下行数据的预配置时域资源后移两个OFDM符号，得到第三个下行数据的实际时域资源，为第二个slot的第四个和第五个OFDM符号；将第四个第一下行数据的预配置时域资源后移两个OFDM符号，得到第四个第一下行数据的实际时域资源，为第二个slot的第十个和第十一个OFDM符号。若第四个第一下行数据之后还有第一下行数据，则还将后续每个第一下行数据的预配置时域资源均后移一个OFDM符号。
在第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源时，以免冲突方式传输第i个第一下行数据以及后续第一下行数据，使得第i个第一下行数据的实际时域资源以及后续每个第一下行数据的实际时域资源与调度时域资源均不重叠，从而避免第一下行数据与第二下行数据之间的传输冲突。
免冲突方式四
请参见图11，为本申请实施例提供的免冲突方式四的示例图。图11中，第二个第一下行数据的预配置时域资源与调度时域资源重叠，即i＝2。免冲突方式四与免冲突方式二的不同之处在于，免冲突方式二是移动第二个第一下行数据的全部预配置时域资源，而免冲突方式四是移动第二个第一下行数据的部分预配置时域资源。免冲突方式四中的移动规则，例如为将第二个第一下行数据的预配置时域资源中从重叠时域资源开始的预配置时域资源，向后移动M个符号，M表示重叠时域资源的符号长度，该符号长度为正整数。
示例性的，图11中，第一个第一下行数据的预配置时域资源为第一个slot的第三个至第七个OFDM符号，共五个OFDM符号，调度时域资源为第一个slot的第四个和第五个OFDM符号，那么第一个slot的第四个和第五个OFDM符号即为重叠时域资源，M＝2。基于重叠时域资源，在第一个第一下行数据的预配置时域资源的基础上局部移动2个符号，得到第一个第一下行数据的实际时域资源，为第一个slot的第三个、第六个至第九个OFDM符号，与调度时域资源不重叠。
图11是移动一个第一下行数据的部分预配置时域资源，进一步的还可以移动每个第一下行数据的部分预配置时域资源，例如还可以移动图11中第二个第一下行数据的部分预配置时域资源。
综合图8-图11可知，在第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源时，可以整体移动第一下行数据的预配置时域资源，可以移动第i个第一下行数据的预配置时域资源，还可以移动部分第一下行数据的预配置时域资源。在移动某个第一下行数据的预配置时域资源时，可以移动该第一下行数据的全部预配置时域资源，可以移动该第一下行数据的部分预配置时域资源，还可以前移该第一下行数据的一部分预配置时域资源，后移该第一下行数据的一部分预配置时域资源。
图8-图11中，第二个第一下行数据的实际时域资源与调度传输资源的时域资源属于同一slot，即属于同一时域单元，第二个第一下行数据的实际时域资源的大小与其预配置时域资源的大小一致。不过以免冲突方式传输时可能会出现一种特殊情况，该特殊情况为某个 第一下行数据的实际时域资源跨越slot边界，由于终端设备不期望跨slot接收第一下行数据，导致该第一下行数据的实际时域资源的大小与其预配置时域资源的大小不一致。鉴于此，本申请实施例提供如下两种解决方式。
方式一，调整调制编码策略(modulation and coding scheme，MCS)，根据该MCS在第i个第一下行数据的实际时域资源上传输第i个第一下行数据。本申请实施例中可将调整前的MCS称为第一MCS，将调整后的MCS称为第二MCS，第一MCS与第二MCS不同。第一MCS的索引可包括在DCI中，或由DCI指示第一MCS的索引。MCS的索引、调制阶数与码率之间的对应关系可参见表1。表1仅仅是协议中的一个MCS表格，本发明不限制于此表格，仅以该表格为例。
表1
Figure PCTCN2020106020-appb-000001
Figure PCTCN2020106020-appb-000002
示例性的，可参见图12，为本申请实施例提供的特殊情况下的一种传输示例图。图12中，第二个第一下行数据的预配置时域资源与调度时域资源重叠，即i＝2；第二个第一下行数据的预配置时域资源为第一个slot的第十三个和第十四个OFDM符号，调度时域资源为第一个slot的第十三个OFDM符号，那么第一个slot的第十三个OFDM符号即为重叠时域资源。基于重叠时域资源，将第二个第一下行数据的预配置时域资源后移一个OFDM符号后，占用的时域资源为第一个slot的第十四个OFDM符号以及第二个slot的第一个OFDM符号，不过终端设备不期望跨slot接收第一下行数据，因此第二个第一下行数据的实际时域资源为第一slot的第十四个OFDM符号。此时第二个第一下行数据的实际时域资源的数目(一个OFDM符号)小于第二个第一下行数据的预配置时域资源的数目(两个OFDM符号)。
对网络设备而言，调整MCS，采用第一MCS在第一个第一下行数据的预配置时域资源上发送第一个第一下行数据，采用第二MCS在第二个第一下行数据的实际时域资源上发送第二个第一下行数据，第一MCS与第二MCS不同。协议可以规定第一MCS与第二MCS的调制方式相同，编码速率不同。因为是重复传输，所以传输的每个第一下行数据的传输块大小都是相同的。网络设备根据第一MCS对应的调制方式、第一MCS的编码速率以及第一个下行数据所占的时频资源确定第一个第一下行数据的大小。第一个第一下行数据的传输块大小与第二个第一下行数据的传输块大小相同，那么便确定了第二个第一下行数据的传输块大小。根据第二个第一下行数据的传输块大小、第二MCS对应的调制方式以及第二个第一下行数据所占的时频资源确定第二个第一下行数据的编码速率。
对终端设备而言，根据DCI确定第一MCS，根据第一MCS对应的调制方式、第一MCS的编码速率和资源指示信息确定第一个第一下行数据的传输块大小。由于重复传输，那么第一个第一下行数据的传输块大小即为第二个第一下行数据的传输块大小。调制方式不变，那么第一MCS对应的调制方式即为第二MCS对应的调制方式。根据第二个第一下行数据的实际接收时域资源、第二个第一下行数据的传输块大小以及第二MCS对应的调制方式确定第二MCS的编码速率。最后，终端设备根据第二MCS对应的调制方式和第二MCS的编码速率对在第二个第一下行数据的实际接收时域资源上接收的第二个第一下行数据进行译码，根据第一MCS对应的调制方式和第一MCS的编码速率对在第一个第一下行数据的预配置时域资源上接收的第一个第一下行数据进行译码。
可选的，协议可以规定一个编码速率的阈值，例如该阈值可以是0.75、0.93或者1等。如果网络设备根据上述方法计算得到的第i个第一下行数据的编码码率超过阈值，则网络 设备不发送配置的第i个第一下行数据，或终端设备不接收配置的第i个第一下行数据，或网络设备不发送配置的第i个第一下行数据，终端设备不接收配置的第i个第一下行数据。
其中，调制方式可以包括但不限于正交相移键控(quadrature phase shift keying，QPSK)调制、二进制相移键控(binary phase shift keying，BPSK)调制、脉冲幅度调制(pulse-amplitude modulation，PAM)或正交幅度调制(quadrature amplitude modulation，QAM)等。
上述以第一MCS与第二MCS的调制方式相同，编码速率不同为例，也可以调制方式和编码速率均不相同，视具体情况而定。
协议中可规定该特殊情况下，网络设备和终端设备调整MCS以传输第i个第一下行数据，协议也可以规定调整MCS的方式，例如规定调制方式不变，改变编码速率。协议中还可以规定当任意一个第一下行数据的实际时域资源的大小与其预配置时域资源的大小不一致时，网络设备和终端设备调整MCS以传输该第一下行数据。
方式二，丢弃第i个第一下行数据。
对网络设备而言，第i个第一下行数据的实际时域资源的数目小于第i个第一下行数据的预配置时域资源时，不发送第i个第一下行数据。若配置重复传输N个第一下行数据，那么网络设备实际发送第一下行数据的数量小于N。可以理解的是，网络设备实际在配置的预配置时域资源中除第i个第一下行数据的预配置时域资源之外的预配置时域资源上发送N-1个第一下行数据。
对终端设备而言，第i个第一下行数据的实际时域资源的数目小于第i个第一下行数据的预配置时域资源时，不在第i个第一下行数据的实际时域资源上接收第i个第一下行数据。若配置重复传输N个第一下行数据，那么实际终端设备接收N-1个第一下行数据。可以理解的是，终端设备实际在配置的预配置时域资源中除第i个第一下行数据的预配置时域资源之外的预配置时域资源上接收N-1个第一下行数据。
协议中可规定该特殊情况下，网络设备不发送第i个第一下行数据，终端设备忽视第i个第一下行数据的预配置时域资源。
示例性的，可参见图13，为本申请实施例提供的特殊情况下的另一种传输示例图。图13中，第二个第一下行数据的预配置时域资源与调度时域资源重叠，即i＝2；第二个第一下行数据的预配置时域资源为第一个slot的第十三个和第十四个OFDM符号，调度时域资源为第一个slot的第十三个OFDM符号，那么第一个slot的第十三个OFDM符号即为重叠时域资源。基于重叠时域资源和第一下行数据的时域大小(例如两个OFDM符号)，在第二个第一下行数据的预配置时域资源的基础上后移一个OFDM符号后，占用的时域资源为第一个slot的第十四个OFDM符号以及第二个slot的第一个OFDM符号，不过终端设备不期望跨slot接收第一下行数据，因此网络设备不在第二个第一下行数据的预配置时域资源上发送第二个第一下行数据。图13中，配置的预配置时域资源用于传输4个第一下行数据，而实际网络设备传输了3个第一下行数据，对应的终端设备实际接收3个第一下行数据。
实施例三，网络设备不发送配置的第i个第一下行数据。本申请实施例将这种方式称为舍弃方式。
请参见图14，为本申请实施例提供的舍弃方式传输的示例图。图14中，第二个第一下行数据的预配置时域资源与调度时域资源重叠，即i＝2。
对网络设备而言，不发送配置的第i个第一下行数据。若配置重复传输N个第一下行数据，那么网络设备实际发送第一下行数据的数量小于N。可以理解的是，网络设备实际在配置的预配置时域资源中除第i个第一下行数据的预配置时域资源之外的预配置时域资源上发送N-1个第一下行数据。
对终端设备而言，不在第i个第一下行数据的预配置时域资源上接收第i个第一下行数据。若配置重复传输N个第一下行数据，那么实际终端设备接收N-1个第一下行数据。可以理解的是，终端设备实际在配置的预配置时域资源中除第i个第一下行数据的预配置时域资源之外的预配置时域资源上接收N-1个第一下行数据。
协议中可规定在第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源时，网络设备不发送配置的第i个第一下行数据，终端设备忽视第i个第一下行数据的预配置时域资源。
示例性的，图14中，第二个第一下行数据的预配置时域资源为第一个slot的第八个和第九个OFDM符号，调度时域资源为第一个slot的第八个OFDM符号，那么第一个slot的第八个OFDM符号即为重叠时域资源。网络设备不在第二个第一下行数据的预配置时域资源上发送第二个第一下行数据，即不在第一slot的第八个和第九个OFDM符号上发送第二个第一下行数据。图14中，配置的预配置时域资源用于传输4个第一下行数据，而实际网络设备传输了3个第一下行数据，对应的终端设备实际接收3个第一下行数据。
需要说明的是，图8-图14中的实际时域资源，对网络设备而言是实际发送时域资源，对终端设备而言是实际接收时域资源。
本申请实施例应用在多站重复传输场景时，在执行图6所示实施例之前，网络设备可向终端设备发送TCI信息，该TCI信息用于指示多个激活的TCI状态。多个激活的TCI状态意味着多个TRP协同参与终端设备的重复传输，有几个激活的TCI状态便表明有几个TRP。终端设备在接收到该TCI信息时，可根据多个激活的TCI状态，确定出第一下行数据来自多个TRP，即确定处于多站重复传输的场景。
可选的，网络设备为终端设备配置多个QCL状态，终端设备可根据多个QCL状态确定处于多站重复传输的场景。
结合图6-图14，本申请实施例在第i个第一下行数据的预配置时域资源与调度时域资源存在重叠时域资源，优先传输第二下行数据或优先承载上行数据，通过实施例一、实施例二或实施例三可避免第i个第一下行数据的实际时域资源与调度时域资源重叠，从而避免重复传输场景下的传输冲突。
上述本申请提供的实施例中，分别从网络设备、终端设备、以及网络设备和终端设备之间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，网络设备和终端设备可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
请参见图15，为本申请实施例提供的数据传输装置的逻辑结构示意图。图15中，数据传输装置70包括处理单元701和通信单元702。该数据传输装置可以实现本申请实施例 中的终端设备的功能，也可以实现本申请实施例中的网络设备的功能。
对于数据传输装置70用于实现终端设备的功能的情况：
处理单元701，用于确定第一下行数据的预配置时域资源，该预配置时域资源用于重复传输第一下行数据；
通信单元702，用于接收配置信息；
处理单元701，用于根据配置信息确定调度时域资源；
通信单元702，还用于在处理单元确定出预配置时域资源与调度时域资源存在重叠时域资源的情况下，在调度时域资源上，传输数据。
可选的，调度时域资源为传输第二下行数据的时域资源，第二下行数据的优先级高于第一下行数据的优先级。
可选的，配置信息指示调度时域资源用于上行传输。
可选的，处理单元701，还用于根据重叠时域资源，确定第一下行数据的实际接收时域资源；通信单元702，还用于在第一下行数据的实际接收时域资源上，接收第一下行数据，第一下行数据的实际接收时域资源与调度时域资源不重叠。
可选的，预配置时域资源用于重复传输N个第一下行数据，处理单元701确定出预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；
处理单元701，还用于根据重叠时域资源，确定第i个第一下行数据的实际接收时域资源；
通信单元702，还用于在第i个第一下行数据的实际接收时域资源上，接收第i个第一下行数据。
可选的，预配置时域资源用于重复传输N个第一下行数据，处理单元701确定出预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；重叠时域资源未承载解调参考信号；通信单元702，还用于以打孔方式，在重叠时域资源上接收第i个第一下行数据。
可选的，处理单元701确定出第i个第一下行数据的实际接收时域资源与调度时域资源不重叠。
可选的，处理单元701确定出第i个第一下行数据的实际接收时域资源与重叠时域资源属于同一时域单元。
可选的，处理单元701，还用于调整调制编码策略；通信单元702，具体用于根据调整后的调制编码策略在第i个第一下行数据的实际接收时域资源上，接收第i个第一下行数据。
可选的，通信单元702，还用于接收传输配置指示信息，传输配置指示信息用于指示多个激活的传输配置指示状态。
对于数据传输装置70用于实现网络设备的功能的情况：
通信单元702，用于发送资源指示信息，该资源指示信息用于指示第一下行数据的预配置时域资源，该预配置时域资源用于重复传输第一下行数据；发送配置信息，该配置信息用于指示调度时域资源；
通信单元702，还用于在处理单元701确定出预配置时域资源与调度时域资源存在重 叠时域资源的情况下，在调度时域资源上，传输数据。
可选的，调度时域资源为传输第二下行数据的时域资源，第二下行数据的优先级高于第一下行数据的优先级。
可选的，配置信息指示调度时域资源用于上行传输。
可选的，处理单元701，用于根据重叠时域资源，确定第一下行数据的实际发送时域资源，第一下行数据的实际发送时域资源与调度时域资源不重叠；通信单元702，还用于在第一下行数据的实际发送时域资源上，发送第一下行数据。
可选的，预配置时域资源用于重复传输N个第一下行数据，处理器确定出预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；处理单元701，用于根据重叠时域资源，确定第i个第一下行数据的实际发送时域资源；通信单元702，还用于在第i个第一下行数据的实际发送时域资源上，发送第i个第一下行数据。
可选的，预配置时域资源用于重复传输N个第一下行数据，处理器确定出预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，重叠时域资源未承载解调参考信号，N为正整数，i为大于等于1小于等于N的整数；通信单元702，还用于以打孔方式，在重叠时域资源上发送第i个第一下行数据。
可选的，处理单元701确定出第i个第一下行数据的实际发送时域资源与调度时域资源不重叠。
可选的，处理单元701确定出第i个第一下行数据的实际发送时域资源与重叠时域资源属于同一时域单元。
可选的，处理单元701，用于调整调制编码策略；通信单元702，具体用于根据调整后的调制编码策略在第i个第一下行数据的实际发送时域资源上，发送第i个第一下行数据。
可选的，预配置时域资源用于重复传输N个第一下行数据，处理器确定出预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；
处理单元701，用于根据重叠时域资源，确定第i个第一下行数据的实际发送时域资源，第i个第一下行数据的实际发送时域资源与调度时域资源不重叠；
通信单元702，还用于在处理器确定出第i个第一下行数据的实际发送时域资源的数目小于第i个第一下行数据的预配置时域资源的数目的情况下，在第i个第一下行数据的实际发送时域资源上不发送第i个第一下行数据。
可选的，预配置时域资源用于重复传输N个第一下行数据，处理器确定出预配置时域资源中的第i个第一下行数据的预配置时域资源与调度时域资源重叠，N为正整数，i为大于等于1小于等于N的正整数；通信单元702，还用于在第i个第一下行数据的预配置时域资源上不发送第i个第一下行数据。
可选的，通信单元702，还用于发送传输配置指示信息，传输配置指示信息用于指示多个激活的传输配置指示状态。
本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，另外，在本申请各个实施例中的各功能单元可以集成在一个处理器 中，也可以是单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
请参见图16，为本申请实施例提供的一种终端设备的结构示意图。图16所示的结构为一种可能的结构。该终端设备80包括收发器801和一个或多个控制器/处理器802。
处理器802，用于确定第一下行数据的预配置时域资源，该预配置时域资源用于重复传输第一下行数据；
收发器801，用于接收配置信息；
处理器802，用于根据配置信息确定调度时域资源；
收发器801，还用于在处理器802确定出预配置时域资源与调度时域资源存在重叠时域资源的情况下，在调度时域资源上，传输数据。
用于根据配置信息确定调度时域资源的处理器与用于确定第一下行数据的预配置时域资源的处理器可以是同一个处理器，也可以是不同的处理器。用于确定存在重叠时域资源的处理器与用于根据配置信息确定调度时域资源的处理器可以是同一个处理器，也可以是不同的处理器。用于确定第一下行数据的预配置时域资源的处理器与用于确定存在重叠时域资源的处理器可以是同一个处理器，也可以是不同的处理器。
关于收发器801在调度时域资源上传输数据，处理器802确定第一下行数据的预配置时域资源，以及处理器802确定存在重叠时域资源可以参见前面方法实施例中的描述。
上述控制器/处理器802的功能可以通过电路实现也可以通过通用硬件执行软件代码实现，当采用后者实现时，终端设备除了包括前述的收发器801和控制器/处理器802外，还可以包括存储器803，该存储器803用于存储可被控制器/处理器802执行的程序代码。当控制器/处理器802运行存储器803存储的程序代码时就执行前述功能。
进一步地，终端设备还可以包括编码器8041、调制器8042、解调器8044和解码器8043。编码器8041用于获取终端设备将要发给网络设备或者其他终端的数据/信令，并对该数据/信令进行编码。调制器8042对编码器8041编码后的数据/信令进行调制后传递给收发器801，由收发器801发送给网络设备或者其他终端。
解调器8044用于获取网络设备或者其他终端发送给终端的数据/信令，并进行解调。解码器8043用于对解调器8044解调后的数据/信令进行解码。
上述编码器8041、调制器8042、解调器8044和解码器8043可以由合成的调制解调处理器804来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进系统的接入技术)来进行处理。
控制器/处理器802对终端设备的动作进行控制管理，以使各个器件配合实现上述方法实施例中终端设备执行的步骤。作为示例，控制器/处理器802用于支持终端设备执行图6中涉及终端设备处理的内容。
请参见图17，为本申请实施例提供的一种网络设备的结构示意图。图17所示的结构为一种可能的结构。该网络设备90包括收发器901和一个或多个处理器902。
一个或多个处理器902用于前述实施例中网络设备的功能，例如执行图6所示实施例中的605，控制收发器901发送数据或信息。
网络设备90还可以包括至少一个存储器1030，用于存储程序指令和/或数据。存储器 903和处理器902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902可能和存储器903协同操作。处理器902可能执行存储器903中存储的程序指令。所述至少一个存储器中的至少一个可以包括于处理器中。
收发器901，用于通过传输介质和其它设备进行通信，从而用于网络设备90可以和其它设备进行通信，其他设备可以是终端设备或核心网设备。收发器可以是通信接口、接口、总线、电路或者能够实现收发功能的装置。示例性的，处理器902利用收发器901发送资源指示信息、配置信息和数据。
本申请实施例中不限定上述收发器901、处理器902以及存储器903之间的具体连接介质。本申请实施例在图17中以存储器903、处理器902以及收发器901之间通过总线904连接，总线在图17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。所述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17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。
本申请实施例还提供一种数据传输系统，该系统包括一个或多个终端设备，以及一个或多个网络设备。
应理解，在本申请实施例中，处理器可以是中央处理单元(Central Processing Unit，简称为“CPU”)，该处理器还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。
该总线系统除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。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。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
还应理解，本文中涉及的第一、第二、第三、第四以及各种数字编号仅为描述方便进行的区分，并不用来限制本发明实施例的范围。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各种说明性逻辑块(illustrative logical block)和步骤(step)，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用 和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
以上所述，仅为本发明的具体实施方式，但本发明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发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (57)

  1. 一种数据传输方法，其特征在于，包括：
    确定第一下行数据的预配置时域资源，所述预配置时域资源用于重复传输所述第一下行数据；
    接收配置信息，根据所述配置信息确定调度时域资源；
    若所述预配置时域资源与所述调度时域资源存在重叠时域资源，在所述调度时域资源上，传输数据。
  2. 根据权利要求1所述的方法，其特征在于，所述调度时域资源为传输第二下行数据的时域资源，所述第二下行数据的优先级高于所述第一下行数据的优先级。
  3. 根据权利要求1所述的方法，其特征在于，所述配置信息指示所述调度时域资源用于上行传输。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；所述重叠时域资源未承载解调参考信号；
    所述方法还包括：
    以打孔方式，在所述重叠时域资源上接收所述第i个第一下行数据。
  5. 根据权利要求1-3任一项所述的方法，其特征在于，所述方法还包括：
    根据所述重叠时域资源，确定所述第一下行数据的实际接收时域资源，在所述第一下行数据的实际接收时域资源上，接收所述第一下行数据，所述第一下行数据的实际接收时域资源与所述调度时域资源不重叠。
  6. 根据权利要求1-3任一项所述的方法，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；
    所述方法还包括：
    根据所述重叠时域资源，确定所述第i个第一下行数据的实际接收时域资源，在所述第i个第一下行数据的实际接收时域资源上，接收所述第i个第一下行数据。
  7. 根据权利要求6所述的方法，其特征在于，所述第i个第一下行数据的实际接收时域资源与所述调度时域资源不重叠。
  8. 根据权利要求6所述的方法，其特征在于，所述第i个第一下行数据的实际接收时 域资源与所述重叠时域资源属于同一时域单元。
  9. 根据权利要求8所述的方法，其特征在于，所述在所述第i个第一下行数据的实际接收时域资源上，接收所述第i个第一下行数据，包括：
    调整调制编码策略，根据所述调整后的调制编码策略在所述第i个第一下行数据的实际接收时域资源上，接收所述第i个第一下行数据。
  10. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    接收传输配置指示信息，所述传输配置指示信息用于指示多个激活的传输配置指示状态。
  11. 一种数据传输方法，其特征在于，包括：
    发送资源指示信息，所述资源指示信息用于指示第一下行数据的预配置时域资源，所述预配置时域资源用于重复传输所述第一下行数据；
    发送配置信息，所述配置信息用于指示调度时域资源；
    若所述预配置时域资源与所述调度时域资源存在重叠时域资源，在所述调度时域资源上，传输数据。
  12. 根据权利要求11所述的方法，其特征在于，所述调度时域资源为传输第二下行数据的时域资源，所述第二下行数据的优先级高于所述第一下行数据的优先级。
  13. 根据权利要求11所述的方法，其特征在于，所述配置信息指示所述调度时域资源用于上行传输。
  14. 根据权利要求11-13任一项所述的方法，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；所述重叠时域资源未承载解调参考信号；
    所述方法还包括：
    以打孔方式，在所述重叠时域资源上发送所述第i个第一下行数据。
  15. 根据权利要求11-13任一项所述的方法，其特征在于，所述方法还包括：
    根据所述重叠时域资源，确定所述第一下行数据的实际发送时域资源，在所述第一下行数据的实际发送时域资源上，发送所述第一下行数据，所述第一下行数据的实际发送时域资源与所述调度时域资源不重叠。
  16. 根据权利要求11-13任一项所述的方法，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述预配置时域资源中的第i个第一下行数据的预配置时域 资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；
    所述方法还包括：
    根据所述重叠时域资源，确定所述第i个第一下行数据的实际发送时域资源，在所述第i个第一下行数据的实际发送时域资源上，发送所述第i个第一下行数据。
  17. 根据权利要求16所述的方法，其特征在于，所述第i个第一下行数据的实际发送时域资源与所述调度时域资源不重叠。
  18. 根据权利要求16所述的方法，其特征在于，所述第i个第一下行数据的实际发送时域资源与所述重叠时域资源属于同一时域单元。
  19. 根据权利要求18所述的方法，其特征在于，所述在所述第i个第一下行数据的实际发送时域资源上，发送所述第i个第一下行数据，包括：
    调整调制编码策略，根据所述调整后的调制编码策略在所述第i个第一下行数据的实际发送时域资源上，发送所述第i个第一下行数据。
  20. 根据权利要求11-13任一项所述的方法，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；
    所述方法还包括：
    根据所述重叠时域资源，确定所述第i个第一下行数据的实际发送时域资源，所述第i个第一下行数据的实际发送时域资源与所述调度时域资源不重叠；
    若所述第i个第一下行数据的实际发送时域资源的数目小于所述第i个第一下行数据的预配置时域资源的数目，则在所述第i个第一下行数据的实际发送时域资源上不发送所述第i个第一下行数据。
  21. 根据权利要求11-13任一项所述的方法，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的正整数；
    所述方法还包括：
    在所述第i个第一下行数据的预配置时域资源上不发送所述第i个第一下行数据。
  22. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    发送传输配置指示信息，所述传输配置指示信息用于指示多个激活的传输配置指示状态。
  23. 一种数据传输装置，其特征在于，包括至少一个处理器和收发器；
    所述处理器，用于确定第一下行数据的预配置时频资源，所述预配置时域资源用于重 复传输所述第一下行数据；
    所述收发器，用于接收配置信息；
    所述处理器，还用于根据所述配置信息确定调度时域资源；
    所述收发器，还用于在所述处理器确定出所述预配置时域资源与所述调度时域资源存在重叠时域资源的情况下，在所述调度时域资源上，传输数据。
  24. 根据权利要求23所述的装置，其特征在于，所述调度时域资源为传输第二下行数据的时域资源，所述第二下行数据的优先级高于所述第一下行数据的优先级。
  25. 根据权利要求23所述的装置，其特征在于，所述配置信息指示所述调度时域资源用于上行传输。
  26. 根据权利要求23-25任一项所述的装置，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述处理器确定出所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，所述重叠时域资源未承载解调参考信号，N为正整数，i为大于等于1小于等于N的整数；
    所述收发器，还用于以打孔方式，在所述重叠时域资源上接收所述第i个第一下行数据。
  27. 根据权利要求23-25任一项所述的装置，其特征在于，
    所述处理器，用于根据所述重叠时域资源，确定所述第一下行数据的实际接收时域资源，所述第一下行数据的实际接收时域资源与所述调度时域资源不重叠；
    所述收发器，还用于在所述第一下行数据的实际接收时域资源上，接收所述第一下行数据。
  28. 根据权利要求23-25任一项所述的装置，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述处理器确定出所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；
    所述处理器，用于根据所述重叠时域资源，确定所述第i个第一下行数据的实际接收时域资源；
    所述收发器，还用于在所述第i个第一下行数据的实际接收时域资源上，接收所述第i个第一下行数据。
  29. 根据权利要求28所述的装置，其特征在于，所述处理器确定出所述第i个第一下行数据的实际接收时域资源与所述调度时域资源不重叠。
  30. 根据权利要求28所述的装置，其特征在于，所述处理器确定出所述第i个第一下 行数据的实际接收时域资源与所述重叠时域资源属于同一时域单元。
  31. 根据权利要求30所述的装置，其特征在于，
    所述处理器，用于调整调制编码策略；
    所述收发器，具体用于根据所述调整后的调制编码策略在所述第i个第一下行数据的实际接收时域资源上，接收所述第i个第一下行数据。
  32. 根据权利要求23所述的装置，其特征在于，
    所述收发器，还用于接收传输配置指示信息，所述传输配置指示信息用于指示多个激活的传输配置指示状态。
  33. 一种数据传输装置，其特征在于，包括至少一个处理器和收发器；
    所述收发器，用于发送资源指示信息，所述资源指示信息用于指示第一下行数据的预配置时域资源，所述预配置时域资源用于重复传输所述第一下行数据；发送配置信息，所述配置信息用于指示调度时域资源；
    所述收发器，还用于在所述处理器确定出所述预配置时域资源与所述调度时域资源存在重叠时域资源的情况下，在所述调度时域资源上，传输数据。
  34. 根据权利要求33所述的装置，其特征在于，所述调度时域资源为传输第二下行数据的时域资源，所述第二下行数据的优先级高于所述第一下行数据的优先级。
  35. 根据权利要求33所述的装置，其特征在于，所述配置信息指示所述调度时域资源用于上行传输。
  36. 根据权利要求33-35任一项所述的装置，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述处理器确定出所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，所述重叠时域资源未承载解调参考信号，N为正整数，i为大于等于1小于等于N的整数；
    所述收发器，还用于以打孔方式，在所述重叠时域资源上发送所述第i个第一下行数据。
  37. 根据权利要求33-35任一项所述的装置，其特征在于，
    所述处理器，用于根据所述重叠时域资源，确定所述第一下行数据的实际发送时域资源，所述第一下行数据的实际发送时域资源与所述调度时域资源不重叠；
    所述收发器，还用于在所述第一下行数据的实际发送时域资源上，发送所述第一下行数据。
  38. 根据权利要求33-35任一项所述的装置，其特征在于，所述预配置时域资源用于 重复传输N个第一下行数据，所述处理器确定出所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；
    所述处理器，用于根据所述重叠时域资源，确定所述第i个第一下行数据的实际发送时域资源；
    所述收发器，还用于在所述第i个第一下行数据的实际发送时域资源上，发送所述第i个第一下行数据。
  39. 根据权利要求38所述的装置，其特征在于，所述处理器确定出所述第i个第一下行数据的实际发送时域资源与所述调度时域资源不重叠。
  40. 根据权利要求38所述的装置，其特征在于，所述处理器确定出所述第i个第一下行数据的实际发送时域资源与所述重叠时域资源属于同一时域单元。
  41. 根据权利要求40所述的装置，其特征在于，
    所述处理器，用于调整调制编码策略；
    所述收发器，具体用于根据所述调整后的调制编码策略在所述第i个第一下行数据的实际发送时域资源上，发送所述第i个第一下行数据。
  42. 根据权利要求33-35任一项所述的装置，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述处理器确定出所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；
    所述处理器，用于根据所述重叠时域资源，确定所述第i个第一下行数据的实际发送时域资源，所述第i个第一下行数据的实际发送时域资源与所述调度时域资源不重叠；
    所述收发器，还用于在所述处理器确定出所述第i个第一下行数据的实际发送时域资源的数目小于所述第i个第一下行数据的预配置时域资源的数目的情况下，在所述第i个第一下行数据的实际发送时域资源上不发送所述第i个第一下行数据。
  43. 根据权利要求33-35任一项所述的装置，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述处理器确定出所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的正整数；
    所述收发器，还用于在所述第i个第一下行数据的预配置时域资源上不发送所述第i个第一下行数据。
  44. 根据权利要求33所述的装置，其特征在于，
    所述收发器，还用于发送传输配置指示信息，所述传输配置指示信息用于指示多个激 活的传输配置指示状态。
  45. 一种芯片系统，其特征在于，包括至少一个处理器和接口；
    所述处理器，用于确定第一下行数据的预配置时频资源，所述预配置时域资源用于重复传输所述第一下行数据；
    所述接口，用于向所述处理器输入经过处理的配置信息；
    所述处理器，还用于根据所述配置信息确定调度时域资源；
    所述接口，还用于在所述处理器确定出所述预配置时域资源与所述调度时域资源存在重叠时域资源的情况下，将数据输出，以在所述调度时域资源上传输所述数据。
  46. 根据权利要求45所述的芯片系统，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述处理器确定出所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；
    所述处理器，还用于根据所述重叠时域资源，确定所述第i个第一下行数据的实际接收时域资源；
    所述接口，还用于向所述处理器输入经过处理的所述第i个第一下行数据，所述第i个第一下行数据为在其对应的实际接收时域资源上接收的。
  47. 根据权利要求45所述的芯片系统，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述处理器确定出所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，所述重叠时域资源未承载解调参考信号，N为正整数，i为大于等于1小于等于N的整数；所述第i个第一下行数据为以打孔方式在其对应的实际接收时域资源上接收的。
  48. 一种芯片系统，其特征在于，包括至少一个处理器和接口；
    所述接口，用于将资源指示信息输出，以发送所述资源指示信息，所述资源指示信息用于指示第一下行数据的预配置时域资源，所述预配置时域资源用于重复传输所述第一下行数据；将配置信息输出，以发送所述配置信息，所述配置信息用于指示调度时域资源；
    所述接口，还用于在所述处理器确定出所述预配置时域资源与所述调度时域资源存在重叠时域资源的情况下，将数据输出，以在所述调度时域资源上传输所述数据。
  49. 根据权利要求48所述的芯片系统，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述处理器确定出所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，N为正整数，i为大于等于1小于等于N的整数；
    所述处理器，用于根据所述重叠时域资源，确定所述第i个第一下行数据的实际发送时域资源；
    所述接口，还用于将所述第i个第一下行数据输出，以在所述第i个第一下行数据的实 际发送时域资源上发送所述第i个第一下行数据。
  50. 根据权利要求48所述的芯片系统，其特征在于，所述预配置时域资源用于重复传输N个第一下行数据，所述处理器确定出所述预配置时域资源中的第i个第一下行数据的预配置时域资源与所述调度时域资源重叠，所述重叠时域资源未承载解调参考信号，N为正整数，i为大于等于1小于等于N的整数；
    所述接口，具体用于将所述第i个第一下行数据输出，以在所述重叠时域资源上，以打孔方式，发送所述第i个第一下行数据。
  51. 一种数据传输装置，其特征在于，所述装置包括用于实现如权利要求1至10中任一项所述方法的单元。
  52. 一种数据传输装置，其特征在于，所述装置包括用于实现如权利要求11至22中任一项所述方法的单元。
  53. 一种数据传输装置，其特征在于，包括：处理器，所述处理器和存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求1至10中任一项所述的方法。
  54. 一种数据传输装置，其特征在于，包括：处理器，所述处理器和存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求11至22中任一项所述的方法。
  55. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被执行时使得计算机执行如权利要求1至10中任一项所述的方法。
  56. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被执行时使得计算机执行如权利要求11至22中任一项所述的方法。
  57. 一种计算机程序产品，其特征在于包括计算机程序，当所述计算机程序被执行时使得计算机执行如权利要求1至22中任一项所述的方法。
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