WO2019238014A1 - 反馈信息的传输方法和装置 - Google Patents

反馈信息的传输方法和装置 Download PDF

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Publication number
WO2019238014A1
WO2019238014A1 PCT/CN2019/090593 CN2019090593W WO2019238014A1 WO 2019238014 A1 WO2019238014 A1 WO 2019238014A1 CN 2019090593 W CN2019090593 W CN 2019090593W WO 2019238014 A1 WO2019238014 A1 WO 2019238014A1
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Prior art keywords
time unit
time
transmission block
feedback information
unit
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PCT/CN2019/090593
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English (en)
French (fr)
Inventor
杜白
焦淑蓉
张鹏
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华为技术有限公司
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Publication of WO2019238014A1 publication Critical patent/WO2019238014A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • 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
    • 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
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams

Definitions

  • the present application relates to the field of communications, and more specifically, to a method and apparatus for transmitting feedback information in the field of communications.
  • the fifth generation (5G) mobile communications system supports enhanced mobile broadband (eMBB) services, ultra-reliable and low-latency communications (URLLC) services, and mass machine classes Communications (massive machine type communications) (mMTC) services.
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable and low-latency communications
  • mMTC massive machine type communications
  • typical eMBB services may include: ultra-high-definition video, augmented reality (AR), virtual reality (VR), etc.
  • the main characteristics of these services are large amount of data transmitted and high transmission rate.
  • typical URLLC services may include: wireless control in industrial manufacturing or production processes, motion control of drone cars and drones, and haptic interaction applications such as remote repair and remote surgery.
  • the main characteristics of these services are Ultra-high reliability, low latency, small amount of transmitted data, and burstiness.
  • typical mMTC services can include: smart grid power distribution automation, smart cities, etc. The main characteristics are the huge number of connected devices, the small amount of data transmitted, and the data not sensitive to transmission delay. These mMTC terminals need to meet low cost and Demand for very long standby times.
  • the URLLC service requires extremely high delay. Without considering reliability, the transmission delay must be within 0.5 milliseconds (millisecond, ms); under the premise of achieving 99.999% reliability, the transmission delay must be 1ms Within. In order to meet the requirements for data transmission in the URLLC scenario, reduce the delay of the data transmission process, and improve the data transmission performance in the 5G mobile communication system, which is an urgent problem for the industry.
  • the present application provides a method and a device for transmitting feedback information, which can reduce the delay of retransmission and improve the reliability of data transmission.
  • a method for transmitting feedback information including: determining a first time unit from N time units corresponding to a transmission block, where the first time unit is a time unit among the N time units, N Is a positive integer; on the first time unit, feedback information of the transmission block is sent.
  • the method for transmitting feedback information determines the time when the data receiving device sends feedback information in advance, that is, determines the first time unit, so that the data receiving device sends the feedback information in the first time unit, and the data sending device
  • the feedback information is received in a time unit, such as NACK. Therefore, the data sending device can perform data retransmission in advance, thereby reducing the data retransmission delay.
  • reducing the retransmission delay of the data means that under certain delay requirements, the number of retransmissions can be increased, thereby improving the reliability of data transmission.
  • the first time unit is an n-th time unit of the N time units, n is a positive integer less than or equal to N, and n is based on The value of N and the first proportionality coefficient K 1 are determined.
  • n is determined according to any one of the following formulas:
  • n ceil (N ⁇ K 1 ), where ceil represents rounding up; or,
  • n floor (N ⁇ K 1 ), where floor means round down.
  • the terminal device may determine the first time unit according to the foregoing formula. Assuming that the first time unit is the nth time unit of the N time units, the nth time unit is determined as the first time unit by calculating the value of n.
  • the first time unit is an n-th time unit of the N time units, and n is a preset positive less than or equal to N. Integer.
  • the transmission block includes M code blocks, and the first time unit corresponds to an m-th code block of the M code blocks.
  • the m is determined according to any one of the following formulas:
  • the terminal device determines an m-th code block according to a preset value of m, thereby determining a first time unit, where m is a positive integer and m is less than M.
  • the first time unit is an L-th time unit after a second time unit, and the second time unit is used for transmitting
  • L is a positive integer.
  • the method before determining the first time unit among the N time units corresponding to the slave transmission block, the method further includes: determining the N The value is greater than or equal to a preset first threshold; and / or it is determined that the number of code blocks M included in the transmission block is greater than or equal to a preset second threshold; and / or it is determined that the transmission block is not configured with an additional demodulation reference signal.
  • any one of a variety of methods can be used to determine whether the feedback information needs to be transmitted in advance, or any two of the multiple methods can be used to determine whether the feedback information needs to be transmitted in advance.
  • This method is used to determine whether feedback information needs to be transmitted in advance, which is not limited in this application.
  • the terminal device may also default to transmitting feedback information in advance.
  • the terminal device and the base station can determine whether the feedback information needs to be transmitted in advance by combining the transmission resources of the transmission block and / or the number of code blocks included in the transmission block, so that transmitting the feedback information in advance can reduce the delay of data retransmission.
  • the feedback information is transmitted in advance to reduce the data transmission delay and improve the reliability of data transmission.
  • the transmission resources of the transmission block here may include the number of time units, the number of symbols, and the configuration of the DMRS for transmitting the transmission block.
  • a method for transmitting feedback information including: determining a first time unit from N time units corresponding to a transmission block, where the first time unit is a time unit among the N time units N is a positive integer; on the first time unit, feedback information of the transmission block is received.
  • the method for transmitting feedback information determines the time when the data receiving device sends feedback information in advance, that is, determines the first time unit, so that the data receiving device sends the feedback information in the first time unit, and the data sending device
  • the feedback information is received in a time unit, such as NACK. Therefore, the data sending device can perform data retransmission in advance, thereby reducing the data retransmission delay.
  • reducing the retransmission delay of the data means that under certain delay requirements, the number of retransmissions can be increased, thereby improving the reliability of data transmission.
  • the first time unit is an n-th time unit of the N time units, n is a positive integer less than or equal to N, and n is based on The value of N and the first proportionality coefficient K 1 are determined.
  • n is determined according to any one of the following formulas:
  • n ceil (N ⁇ K 1 ), where ceil represents rounding up; or,
  • n floor (N ⁇ K 1 ), where floor means round down.
  • the first time unit is an n-th time unit of the N time units, and n is a preset positive less than or equal to N Integer.
  • the transmission block includes M code blocks, and the first time unit corresponds to an m-th code block of the M code blocks.
  • the m is determined according to any one of the following formulas:
  • the first time unit is an L-th time unit after the second time unit, and the second time unit is used for transmitting
  • L is a positive integer.
  • the method before determining a first time unit among the N time units corresponding to the slave transmission block, the method further includes: determining the N The value is greater than or equal to a preset first threshold; and / or it is determined that the number of code blocks M included in the transmission block is greater than or equal to a preset second threshold; and / or it is determined that the transmission block is not configured with an additional demodulation reference signal.
  • a communication device has a function of implementing a terminal device in the method design of the first aspect. These functions can be implemented by hardware, or they can be implemented by hardware to execute corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • a communication device has a function of implementing a network device (for example, a base station) in the method design of the second aspect.
  • a network device for example, a base station
  • These functions can be implemented by hardware, or they can be implemented by hardware to execute corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • a terminal device including a transceiver and a processor.
  • the terminal device further includes a memory.
  • the processor is used to control the transceiver to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program from the memory, so that the terminal device executes the first aspect or any of the first aspect Method in implementation.
  • a network device including a transceiver and a processor.
  • the terminal device further includes a memory.
  • the processor is used to control the transceiver to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program from the memory, so that the terminal device executes the second aspect or any one of the second aspect.
  • a communication system includes the terminal device of the third aspect and the network device of the fourth aspect; or the system includes the terminal device of the fifth aspect and the network device of the sixth aspect.
  • a communication device may be a terminal device designed in the foregoing method, or a chip provided in the terminal device.
  • the communication device includes a processor, which is coupled to the memory and can be used to execute instructions in the memory to implement the method described by the terminal device in the first aspect or any possible implementation manner of the first aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input / output interface.
  • the communication interface may be an input / output interface.
  • the transceiver may be a transceiver circuit.
  • the input / output interface may be an input / output circuit.
  • a communication device may be a network device designed in the foregoing method, or a chip provided in the network device.
  • the communication device includes a processor coupled to the memory, and may be configured to execute instructions in the memory to implement the method described by the network device in the second aspect or any one of the possible implementation manners of the second aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input / output interface.
  • the communication interface may be an input / output interface.
  • the transceiver may be a transceiver circuit.
  • the input / output interface may be an input / output circuit.
  • a computer program product includes: computer program code that, when the computer program code runs on a computer, causes the computer to execute the methods in the above aspects.
  • a computer-readable medium stores program code, and when the computer program code runs on a computer, the computer causes the computer to execute the methods in the foregoing aspects.
  • FIG. 1 is a schematic architecture diagram of a mobile communication system applicable to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an example of a transmission block and a code block according to an embodiment of the present application.
  • FIG. 3 is a schematic configuration diagram of an example of DMRS provided by an embodiment of the present application.
  • FIG. 4 is a schematic interaction diagram of an example of a method for transmitting feedback information according to an embodiment of the present application.
  • FIG. 5 is another schematic diagram of dividing a transmission block according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of an example of an apparatus for transmitting feedback information according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another example of an apparatus for transmitting feedback information according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another example of an apparatus for transmitting feedback information according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another example of an apparatus for transmitting feedback information according to an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • LTE time division duplex LTE time division duplex
  • 5G 5th generation
  • NR new wireless
  • FIG. 1 is a schematic architecture diagram of a mobile communication system applicable to an embodiment of the present application.
  • the mobile communication system 100 may include a core network device 110, a radio access network device 120, and at least one terminal device (such as the terminal device 130 and the terminal device 140 in FIG. 1).
  • the terminal device is connected to the wireless access network device in a wireless manner, and the wireless access network device is connected to the core network device in a wireless or wired manner.
  • the core network device and the wireless access network device may be separate physical devices, or the functions of the core network device and the wireless access network device's logical functions may be integrated on the same physical device, or they may be a physical device It integrates some functions of core network equipment and some functions of wireless access network equipment.
  • Terminal equipment can be fixed or removable.
  • FIG. 1 is only a schematic diagram.
  • the communication system may further include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1.
  • the embodiments of the present application do not limit the number of core network devices, radio access network devices, and terminal devices included in the mobile communication system.
  • the wireless access network device 120 is an access device in which the terminal device accesses the mobile communication system wirelessly.
  • the radio access network device 120 may be: a base station, an evolved base station (base station), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, and A relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc., can also be a gNB in an NR system, or it can be a component or part of a base station.
  • Equipment such as a central unit (CU), a distributed unit (DU), or a baseband unit (BBU).
  • the wireless access network device is referred to as a network device.
  • the network device refers to a wireless access network device.
  • a network device may refer to the network device itself, or a chip applied to a network device to perform a wireless communication processing function.
  • the terminal equipment in the mobile communication system 100 may also be referred to as a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), and the like.
  • the terminal device in the embodiment of the present application may be a mobile phone, a tablet, a computer with a wireless transmitting and receiving function, or may be applied to virtual reality (VR), augmented reality (AR) ), Industrial control (industrial control), driverless (self driving), remote medical (remote medical), smart grid (grid), transportation safety (transportation safety), smart city (smart city) and smart home (smart home) ) And other scenarios.
  • the aforementioned terminal devices and chips applicable to the aforementioned terminal devices are collectively referred to as terminal devices. It should be understood that the embodiment of the present application does not limit the specific technology and specific device form used by the terminal device.
  • the embodiments of the present application may be applicable to downlink data transmission, uplink data transmission, or device-to-device (D2D) data transmission.
  • the data sending device is a network device
  • the data receiving device is a terminal device.
  • the terminal device After receiving the downlink data, the terminal device sends feedback information to the network device to notify the network device whether the downlink data is correct by the terminal device.
  • receive. For uplink data transmission, the data sending device is a terminal device, and the data receiving device is a network device. After receiving the uplink data, the network device sends feedback information to the terminal device to notify the terminal device whether the uplink data is correct by the network device. receive.
  • the data sending device is a terminal device, and the data receiving device is also a terminal device.
  • the data transmission direction in the embodiments of the present application is not limited.
  • the “first”, “second”, and “third” in the embodiments of the present application are only for distinction, and should not constitute any limitation to the present application.
  • the “first time unit” in the embodiment of the present application indicates the time when the feedback information is transmitted.
  • the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not deal with the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • pre-set and pre-defined can be achieved by pre-storing corresponding codes, forms, or other relevant codes in a device (for example, a terminal device and a network device).
  • a device for example, a terminal device and a network device.
  • This application is not limited to specific implementation methods, such as preset values, preset constants, preset first thresholds, preset second thresholds, and the like in the embodiments of this application.
  • the “feedback information” includes an acknowledgement (ACKnowledgement, ACK) and a “negative acknowledgement (NACK)”.
  • ACK acknowledgement
  • NACK negative acknowledgement
  • the transmission of feedback information is also It can be understood as the transmission of ACK / NACK.
  • ACK / NACK can be sent through the physical uplink channel.
  • the time domain resources used by the base station and the terminal device for wireless communication can be divided into multiple time units.
  • multiple time units may be continuous or a preset interval may be set between some adjacent time units, which is not specifically limited in the embodiment of the present application.
  • the length of a time unit is not limited.
  • one time unit may be one or more subframes; or, it may be one or more time slots; or, it may be one or more symbols.
  • the symbol is also referred to as a time-domain symbol, and may be an orthogonal frequency division multiple (OFDM) symbol, or a single carrier frequency division multiple access. (SC-FDMA) symbol, of which SC-FDMA is also known as orthogonal frequency division multiplexing (transformation precoding, OFDM with TP).
  • OFDM orthogonal frequency division multiple
  • SC-FDMA single carrier frequency division multiple access
  • multiple time units have a time series relationship in the time domain, and the time lengths corresponding to any two time units may be the same or different.
  • the physical layer provides data services to higher layers in the form of transmission channels.
  • the MAC layer sends data to the physical layer in units of one terabyte.
  • the physical layer can first add cyclic redundancy check (CRC), code block partition, channel coding, rate matching and code block concatenation according to the TB data from the MAC layer and the control information of the physical layer. Wait for the process to process, and then perform operations such as scrambling, modulation, layer mapping, and precoding. Finally, it can be sent through the air interface.
  • CRC cyclic redundancy check
  • K max can be 6144bits, 8448bits or 3840bits, etc. This application does not limit this. K max can choose a value from different pre-configured values according to the configuration of the encoding. If the length of the bit sequence of the transmission block to which the CRC bits have been added is greater than K max , the transmission block needs to be divided to meet the requirements of channel coding.
  • the bit sequence input to the encoder for encoding once can be called a CB.
  • the physical layer of the base station splits a TB into multiple CBs, and then encodes each CB.
  • the terminal device decodes each CB separately. If all the CBs of a TB are received correctly, the TB is considered to be received correctly, and if any CB of a TB is received incorrectly, the TB is considered to be received incorrectly.
  • the terminal device sends feedback information to the base station according to whether the received TB is correct or not. If the TB receives an error, the terminal device feeds back a NACK to the base station; if the TB receives correctly, the terminal device feeds back an ACK to the base station. When the base station receives the NACK feedback, it will resend the TB until it receives the ACK feedback or reaches the configured maximum number of retransmissions.
  • FIG. 2 is a schematic diagram of an example in which a TB is divided into a plurality of CBs.
  • a TB is divided into five CBs: CB1, CB2, CB3, CB4, and CB5.
  • the terminal device sends an ACK to the base station.
  • the earliest feedback time of ACK is the time when CB 5 reception ends.
  • NACK can feedback at an earlier time.
  • CB1 receives an error, it can immediately perform NACK feedback, because no matter whether the next 4 CBs are received correctly or not, if there is a CB error, NACK needs to be fed back.
  • the base station receives the NACK, it can immediately retransmit the wrong TB until the transmission is successful. It can be seen that feedback NACK in advance can reduce the delay of retransmission. Therefore, by adopting the technical solution in the embodiment of the present application, the delay of the URLLC service can be effectively reduced; at the same time, before the URLLC service times out, the retransmission opportunity of the URLLC service can be increased, thereby improving the transmission reliability of the URLLC service.
  • early feedback of NACK is not suitable for all data transmission processes, in other words, not all cases, early feedback of NACK is meaningful. If the number of symbols occupied by the TB is small, for example, there are only 2 symbols, then it is meaningless to advance the feedback, and at most 1 symbol is advanced. Even if the TB has only 1 symbol, the feedback cannot be advanced.
  • the base station sends downlink control information (downlink control information, DCI), demodulation reference signal (DMRS), and downlink data to the terminal device.
  • the terminal device may determine information such as a time-frequency resource used to send the downlink data, a time-frequency resource used to send feedback information of the downlink data, and a coding and modulation mode used by the downlink data according to the DCI.
  • the terminal device can perform channel estimation according to the DMRS, and demodulate and decode the downlink data based on the channel estimation result and the information in the DCI.
  • the terminal equipment After receiving the DMRS, the terminal equipment can perform channel estimation and then demodulate the downlink data.
  • a physical downlink shared channel PDSCH
  • multiple DMRS may be configured.
  • a terminal device needs to receive all DMRSs in a PDSCH to complete channel estimation.
  • the terminal device If the terminal device successfully decodes and decodes the downlink data, it indicates that the terminal device successfully received the downlink data, the terminal device generates an ACK, and sends an ACK on the time-frequency resource indicated in the DCI; if the terminal If the device fails to demodulate and decode the downlink data, it indicates that the terminal device fails to receive the downlink data, the terminal device generates a NACK, and sends a NACK on the time-frequency resource indicated in the DCI.
  • Figure 3 is a schematic diagram of a possible DMRS configuration.
  • the terminal device is configured with additional DMRS (such as DMRS1 and DMRS2)
  • the earliest feedback time of NACK is at the time when DMRS2 reception is completed, that is, the feedback can start after the last symbol occupied by DMRS2 ends. NACK.
  • the feedback time of the NACK is already close to the time when all the transmission blocks are received, which is not significant.
  • the terminal device is configured with only one DMRS, such as DMRS 3, the earliest feedback time of NACK is at the time when DMRS 3 reception is completed. If NACK is fed back in advance, the delay of data retransmission can be reduced.
  • an embodiment of the present application provides a method for transmitting feedback information.
  • the data receiving device determines the time when the data receiving device sends the feedback information in advance, that is, determining the first time unit.
  • the data receiving device is implemented at the first time unit.
  • Send the feedback information, and the data sending device receives the feedback information, such as NACK, in the first time unit. Therefore, the data sending device can perform data retransmission in advance, thereby reducing the data retransmission delay.
  • reducing the retransmission delay of the data means that under certain delay requirements, the number of retransmissions can be increased, thereby improving the reliability of data transmission.
  • the following data transmission is used as an example for description, that is, the base station is used as the sending device for data, and the terminal device is used as the receiving device for data.
  • the embodiment of the present application can also be It is applied to uplink data transmission and can also be applied to D2D data transmission.
  • a method for determining whether feedback information needs to be transmitted in advance is provided in the embodiment of the present application.
  • the method is described in detail from the perspective of a terminal device. It can be understood that the method is also applicable to a base station as a data transmitting device.
  • a transmission block corresponds to N time units, where the N time units are used to transmit the transmission block.
  • a time unit is a symbol.
  • the terminal device determines that feedback information needs to be transmitted in advance.
  • a preset first threshold n 1 early transmission is enabled only when N is greater than or equal to n 1 ; otherwise, early transmission is not enabled.
  • the terminal device can accurately know the information of the transmission block through DCI, for example, it includes the number of time units or the number of symbols N of the transmission block.
  • the first threshold n 1 5, when the number of time units N corresponding to the transmission block is greater than or equal to 5, for example, corresponding to 8 time units, the terminal device determines that the feedback information needs to be transmitted in advance.
  • the first threshold may be a preset constant, a constant configured by higher layer signaling, or a constant configured by physical layer signaling.
  • the high-level signaling may be radio resource control (RRC) signaling or MAC layer signaling;
  • the physical layer signaling may be DCI.
  • the terminal device determines that the value of the number M of code blocks included in the transmission block is greater than or equal to a preset second threshold, it determines that feedback information needs to be transmitted in advance.
  • the second threshold may be a preset constant or a constant configured by higher layer signaling, and the second threshold may also be notified to the terminal device through physical layer signaling, such as DCI. This application does not limit this.
  • the terminal device determines that no additional demodulation reference signal is configured for this data transmission, it determines that feedback information needs to be transmitted in advance.
  • the terminal device in the process of receiving downlink data by the terminal device, the terminal device must first receive the DMRS before decoding.
  • the DMRS configuration of the terminal device can be divided into two cases as shown in FIG. 3. One is a case where an additional DMRS is configured. In this case, when the DMRS is received, the time unit corresponding to the TB is almost received, and it is not significant to transmit the feedback information in advance. The other is that only the front DMRS is configured. At this time, after the DMRS is successfully received, there is still a period of time before the TB is completely received, and early transmission can be started.
  • the terminal device can know the configuration of the DMRS in advance. For example, the terminal device can learn whether the additional DMRS is configured for the current data transmission through high-level signaling or through DCI. This application does not limit the specific method for the terminal device to learn the DMRS configuration.
  • the terminal device determines whether the feedback information needs to be transmitted in advance according to the configuration of the base station.
  • the base station can also determine whether the terminal equipment has enabled the advance transmission of feedback information. For example, the base station may send an instruction message to the terminal device to instruct the terminal device to transmit feedback information in advance.
  • the base station may instruct the terminal device to transmit feedback information in advance through high-level signaling; the base station may also notify the terminal device to transmit feedback information in advance through physical layer signaling.
  • the terminal device may also default to transmitting feedback information in advance.
  • any one of the above methods can be used to determine whether the terminal device needs to transmit feedback information in advance. It is also possible to use any two of the above methods in combination to determine whether feedback information needs to be transmitted in advance, or use three methods in combination to determine whether feedback information needs to be transmitted in advance, which is not limited in this application.
  • the terminal device and the base station can determine whether the feedback information needs to be transmitted in advance by combining the transmission resources of the transmission block and / or the number of code blocks included in the transmission block, so that transmitting the feedback information in advance can reduce the data retransmission delay
  • the feedback information is transmitted in advance to reduce the data transmission delay and improve the reliability of data transmission.
  • the transmission resources of the transmission block here may include the number of time units, the number of symbols, and the configuration of the DMRS for transmitting the transmission block.
  • FIG. 4 is a schematic interaction diagram of an example of a method 400 for transmitting feedback information according to an embodiment of the present application. Each step of the method 400 is described in detail below.
  • the terminal 400 and the base station are taken as the execution subjects of the execution method 400 as an example to describe the method 400.
  • the execution body of the execution method 400 may also be a chip applied to a terminal device and a chip applied to a base station.
  • a transport block corresponds to N time units, where N is a positive integer.
  • a transmission block corresponds to N time units, and it can be understood that the time domain resources used to transmit the transmission block are N time units.
  • the first time unit is a time unit among the N time units, and N is a positive integer.
  • the time domain resource used to transmit the transport block is N time units.
  • the time point at which the terminal device sends the feedback information is after the transmission block is completely received, for example, after the end position of the time unit N in FIG. 5.
  • feedback information can be sent in advance, but the timing of sending feedback information in advance is not clear.
  • the time when the feedback information is sent is referred to as a first time unit, that is, the feedback information is sent within the first time unit.
  • the first time unit may be determined by any one of the following three methods.
  • the first time unit is the nth time unit of the N time units, and n is a positive integer less than or equal to N.
  • the value of n can be determined by the following method, thereby determining the nth time unit as the first time unit. Wherein, n is determined according to the value of the number of time units N corresponding to the transport block.
  • the embodiment of this application does not limit the execution subject that determines the value of n.
  • the terminal device may determine the value of the time unit number N corresponding to the transmission block, and then notify the base station of the value of n; or the base station may determine the value of the time unit number N corresponding to the transmission block, and then The terminal device is notified of the value; the terminal device and the base station both determine the value of n according to the agreed method, thereby ensuring that the terminal device and the base station determine that the value of n is equal.
  • n is determined according to the value of the number of time units N corresponding to the transmission block and the first scaling factor K 1 .
  • K 1 may be a preset value.
  • K 1 is 0.5, 0.75, and the like.
  • n may be determined according to the following formula, and the nth time unit may be further determined as the first time unit.
  • This calculation method can be used under certain circumstances so that the calculation result n obtained is a positive integer.
  • n may be a preset value, may also be configured through high-level signaling, or may be configured through physical layer signaling, where n is a positive integer less than or equal to N .
  • the application does not limit the configuration method of n.
  • the first time unit is the last time unit corresponding to the mth code block in the M code blocks, where the value of m is based on the code blocks included in the transmission block.
  • the value of the quantity M is determined.
  • the embodiment of this application does not limit the execution subject that determines the value of m.
  • the terminal device may determine the value of the number of code blocks M included in the transmission block, and then notify the base station of the value of m; or the base station may determine the value of the number of code blocks M included in the transmission block, and then The value of m is notified to the terminal device; the terminal device and the base station may both determine the value of m according to the agreed method, thereby ensuring that the terminal device and the base station determine that the value of m is equal.
  • m is determined according to the value of the number M of code blocks included in the transmission block and the second scaling factor K 2 .
  • K 2 may be a preset value.
  • K 2 is 0.5, 0.75, and the like.
  • the value of m can be determined according to the following formula, and the last time unit corresponding to the mth code block is further determined as the first time unit.
  • m may be a preset value, may also be configured through high-level signaling, or may be configured through physical layer signaling, where m is a positive integer less than M.
  • the application does not limit the configuration method of m.
  • the first time unit is the L-th time unit after the second time unit, where the second time unit is the last time unit for transmitting the demodulation reference signal corresponding to the transmission block, and L is a positive integer.
  • the embodiment of the present application does not limit the determination of the execution subject of the second time unit.
  • the terminal device may determine the second time unit according to the demodulation reference signal corresponding to the transmission block, and then notify the base station of the second time unit; or the base station may determine the second time unit according to the demodulation reference signal corresponding to the transmission block, and then Notify the terminal device of the second time unit; or both the terminal device and the base station determine the second time unit according to an agreed method, thereby ensuring that the second time unit determined by the terminal device and the base station are the same.
  • the terminal device determines that the L 0th time unit corresponding to the last symbol occupied by the DMRS of the transmission block is the second time unit, and the first time unit may be the Lth time unit after the L 0th time unit , The moment when the feedback information is sent is located in the L 0 + L time unit.
  • the L time units may correspond to a period during which the terminal device processes downlink data.
  • the terminal equipment can perform channel estimation only after receiving the DMRS. Furthermore, the terminal equipment demodulates and decodes the downlink data based on the channel estimation result and the DCI information.
  • the specific meaning can be any of the following definitions:
  • the period of processing downlink data includes the period occupied by the terminal device for channel estimation and demodulation and decoding of the downlink data.
  • the period for processing downlink data includes the period occupied by the terminal device for demodulating and decoding the downlink data.
  • the embodiment of the present application does not limit the processing period of the terminal device for processing downlink data.
  • L may be a preset constant, may be configured by high-level signaling, or may be configured by physical layer signaling.
  • the terminal device and the base station can transmit feedback information through one time unit, and can also transmit feedback information through multiple time units.
  • the first time unit may be any time unit among the multiple time units, and the terminal device may determine a time period for sending the feedback information according to the first time unit.
  • the first time unit may be the first time unit of the plurality of time units; or the first time unit may be the last time unit of the plurality of time units; or the first time unit may be In a certain time unit among the multiple time units, the terminal device and the base station may determine a period corresponding to the multiple time units according to the determined first time unit.
  • S430 The terminal device sends feedback information of the transmission block on the first time unit.
  • the base station receives feedback information of the transmission block on the first time unit.
  • the first time unit for sending the feedback information of the transmission block is determined through S420.
  • the terminal device sends the feedback information on the first time unit, and the base station correspondingly determines the first time unit and receives the feedback information on the first time unit. After receiving the feedback information, the base station retransmits the transmission block.
  • the terminal device does not need to wait for the entire transmission block to be received before sending the feedback information, but can determine the time of transmitting the feedback information in advance, that is, the first time unit.
  • the first time unit may be a time unit among the N time units used to transmit the transmission block, that is, the feedback information may also be sent while receiving the transmission block.
  • the terminal device and the base station can determine whether the feedback information needs to be transmitted in advance by combining the transmission resources of the transmission block and / or the number of code blocks included in the transmission block, transmitting the feedback information in advance can reduce the delay of data retransmission.
  • feedback information is transmitted in advance to reduce data transmission delay and improve data transmission reliability.
  • the transmission resources of the transmission block here may include the number of time units, the number of symbols, and the configuration of the DMRS for transmitting the transmission block.
  • the above-mentioned moments of determining whether to send feedback information in advance and determining whether to send feedback information in advance may be applied to the data transmission process alone, or may be applied in combination to the same data transmission process.
  • the feedback information is transmitted in advance, and only the method 400 for determining the time for sending the feedback information in advance is applied; or, the method for determining whether to send the feedback information in advance is used only to determine whether to enable the advance transmission; and
  • the process of transmitting data first determine whether to enable early transmission through the method of sending feedback information in advance, and when the feedback information needs to be transmitted in advance, determine the sending and receiving through the method 400 for determining the timing of sending the feedback information in advance as described above.
  • Moment of feedback This application does not limit this.
  • FIG. 6 shows a schematic block diagram of an apparatus 600 for transmitting feedback information according to an embodiment of the present application.
  • the apparatus 600 may correspond to the terminal device described in the foregoing method 400, and may also be a chip or component applied to the terminal device.
  • Each module or unit in the apparatus 600 is configured to perform each action or processing performed by the terminal device in the above method 400.
  • the communication apparatus 600 may include a determining unit 610 and a communication unit 620.
  • the determining unit 610 is configured to determine a first time unit from the N time units corresponding to the transmission block, where the first time unit is a time unit among the N time units, and N is a positive integer.
  • the communication unit 620 is configured to receive feedback information of the transmission block on the first time unit.
  • the determining unit 610 is configured to perform S420 in method 400
  • the communication unit 620 is configured to perform S410 and S430 in method 400.
  • the specific process of each unit performing the foregoing corresponding steps has been described in detail in method 400. For the sake of brevity , I won't go into details here.
  • FIG. 7 shows a schematic block diagram of an apparatus 700 for transmitting feedback information according to an embodiment of the present application.
  • the apparatus 700 may correspond to (for example, be applicable to or be itself) the base station described in the method 400, and the apparatus 700 Each module or unit in the method is used to perform each action or processing performed by the base station in the foregoing method 400.
  • the communication device 700 may include a determining unit 710 and a communication unit 720.
  • the determining unit 710 is configured to determine a first time unit from the N time units corresponding to the transmission block, where the first time unit is a time unit among the N time units, and N is a positive integer.
  • the communication unit 720 is configured to receive feedback information of the transmission block on the first time unit.
  • the determining unit 710 is configured to perform S420 in method 400
  • the communication unit 720 is configured to perform S410 and S430 in method 400.
  • the specific process of each unit performing the foregoing corresponding steps has been described in detail in method 400. For the sake of brevity I will not repeat them here.
  • FIG. 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the present application.
  • the terminal device 800 includes a processor 810 and a transceiver 820.
  • the terminal device 800 further includes a memory 830.
  • the processor 810, the transceiver 820, and the memory 830 communicate with each other through an internal connection path, and transfer control and / or data signals.
  • the memory 830 is used to store a computer program, and the processor 810 is used to call from the memory 830.
  • the computer program is run to control the transceiver 820 to send and receive signals.
  • the processor 810 and the memory 830 may be combined into a processing device, and the processor 810 is configured to execute program codes stored in the memory 830 to implement functions of the terminal device in the foregoing method embodiment.
  • the memory 830 may also be integrated in the processor 810, or be independent of the processor 810.
  • the transceiver 820 may be implemented by means of a transceiver circuit.
  • the above terminal device may further include an antenna 840 for sending uplink data or uplink control signaling output by the transceiver 820 through a wireless signal, or sending downlink data or downlink control signaling to the transceiver 820 for further processing after receiving.
  • the apparatus 800 may correspond to a terminal device in the method 400 according to the embodiment of the present application, and the apparatus 800 may also be a chip or a component applied to a terminal device.
  • each module in the device 800 implements a corresponding process in the method 400 in FIG. 4.
  • the memory 830 is configured to store program code, so that the processor 810 controls the processor 810 to execute the program code when the program code is executed.
  • the method S420 is performed, and the transceiver 820 is used to perform S410 and S430 in the method 400.
  • the specific process of each unit performing the foregoing corresponding steps has been described in detail in the method 400. For the sake of brevity, details are not described herein.
  • FIG. 9 is a schematic structural diagram of a network device 900 according to an embodiment of the present application.
  • the network device 900 (for example, a base station) includes a processor 910 and a transceiver 920.
  • the network device 900 further includes a memory 930.
  • the processor 910, the transceiver 920, and the memory 930 communicate with each other through an internal connection path, and transfer control and / or data signals.
  • the memory 930 is used to store a computer program, and the processor 910 is used to call from the memory 930.
  • the computer program is run to control the transceiver 920 to send and receive signals.
  • the processor 910 and the memory 930 may be combined into a processing device, and the processor 910 is configured to execute program codes stored in the memory 930 to implement functions of the base station in the foregoing method embodiment.
  • the memory 930 may also be integrated in the processor 910, or be independent of the processor 910.
  • the transceiver 920 may be implemented by means of a transceiver circuit.
  • the above network device may further include an antenna 940 for sending downlink data or downlink control signaling output by the transceiver 920 through a wireless signal, or sending uplink data or uplink control signaling to the transceiver 820 for further processing after receiving.
  • the apparatus 900 may correspond to a base station in the method 400 according to the embodiment of the present application, and the apparatus 900 may also be a chip or a component applied to a base station.
  • each module in the device 900 implements a corresponding process in the method 400 in FIG. 4.
  • the memory 930 is used to store program code, so that the processor 910 controls the processor 910 to execute the program code when the program code is executed.
  • the method S420 is performed, and the transceiver 920 is used to perform S410 and S430 in the method 400.
  • the specific process of each unit performing the foregoing corresponding steps has been described in detail in the method 400. For the sake of brevity, it will not be repeated here.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic, and the division of the units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined.
  • the displayed or discussed mutual coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices, or units.
  • the functional units in the embodiments of the present application may be integrated into one physical entity, or each unit may correspond to a physical entity, or two or more units may be integrated into one physical entity.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application.
  • the aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks, and other media that can store program codes .

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Abstract

本申请提供了一种反馈信息的传输方法和装置，该方法包括：终端设备和基站可以结合传输块的传输资源和/或该传输块中包括的码块数确定提前传输反馈信息的时刻，即实现从传输块对应的N个时间单元中，确定第一时间单元；在该第一时间单元上，传输该传输块的反馈信息；此外，终端设备和基站还可以确定是否需要提前传输反馈信息，该方法能够降低重传的时延，提高数据传输的可靠性。

Description

反馈信息的传输方法和装置
本申请要求于2018年06月14日提交中国专利局、申请号为201810611517.2、申请名称为“反馈信息的传输方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并且更具体地，涉及通信领域中反馈信息的传输方法和装置。
背景技术
第五代(the fifth generation，5G)移动通信系统支持增强型移动宽带(enhanced mobile broadband，eMBB)业务、高可靠低时延通信(ultra-reliable and low-latency communications，URLLC)业务以及海量机器类通信(massive machine type communications，mMTC)业务。
例如，典型的eMBB业务可以有：超高清视频、增强现实(augmented reality，AR)、虚拟现实(virtual reality，VR)等，这些业务的主要特点是传输数据量大、传输速率很高。再例如，典型的URLLC业务可以有：工业制造或生产流程中的无线控制、无人驾驶汽车和无人驾驶飞机的运动控制以及远程修理、远程手术等触觉交互类应用，这些业务的主要特点是超高可靠性、低延时，传输数据量较少以及具有突发性。再例如，典型的mMTC业务可以有：智能电网配电自动化、智慧城市等，主要特点是联网设备数量巨大、传输数据量较小、数据对传输时延不敏感，这些mMTC终端需要满足低成本和非常长的待机时间的需求。
其中，URLLC业务对时延要求极高，不考虑可靠性的情况下，传输时延要求在0.5毫秒(millisecond，ms)以内；在达到99.999％的可靠性的前提下，传输时延要求在1ms以内。为了满足URLLC场景对数据传输的要求，降低数据传输过程的时延，提高5G移动通信系统中数据的传输性能，是业界亟需解决的问题。
发明内容
本申请提供了一种反馈信息的传输方法和装置，可以降低重传的时延，提高数据传输的可靠性。
第一方面，提供了一种反馈信息的传输方法，包括：从传输块对应的N个时间单元中，确定第一时间单元，该第一时间单元是该N个时间单元中的时间单元，N为正整数；在该第一时间单元上，发送该传输块的反馈信息。
本申请实施例提供的反馈信息的传输方法，通过确定数据接收设备提前发送反馈信息的时刻，即确定第一时间单元，实现数据接收设备在第一时间单元发送该反馈信息，数据发送设备在第一时间单元接收该反馈信息，例如NACK。从而使得数据发送设备可以提前进行数据重传，进而降低了数据的重传时延。对于要求在一定时间内传输正确的业务数据 来说，降低了数据的重传时延，也就意味着在一定的时延要求下，可以增加重传次数，进而提高了数据传输的可靠性。
结合第一方面，在第一方面的某些实现方式中，所述第一时间单元是所述N个时间单元中的第n个时间单元，n为小于或等于N的正整数，n是根据所述N的值和第一比例系数K 1确定的。
结合第一方面和上述实现方式，在某些可能的实现方式中，所述n是根据以下公式中的任意一种确定的：
n＝ceil(N×K 1)，其中，ceil表示向上取整；或者，
n＝floor(N×K 1)，其中，floor表示向下取整。
具体地，终端设备根据传输块所包括的时间单元数N的值，确定第一时间单元的过程中，可以根据以上公式，确定第一时间单元。假设第一时间单元是N个时间单元中的第n个时间单元，则通过计算n的值，从而将第n个时间单元确定为该第一时间单元。
结合第一方面和上述实现方式，在某些可能的实现方式中，所述第一时间单元是所述N个时间单元中的第n个时间单元，n为小于或等于N的预设的正整数。
结合第一方面和上述实现方式，在某些可能的实现方式中，所述传输块包括M个码块，所述第一时间单元是所述M个码块中的第m个码块所对应的最后一个时间单元，其中，所述m的取值是根据所述M的值和第二比例系数K 2确定的。
结合第一方面和上述实现方式，在某些可能的实现方式中，所述m是根据以下公式中的任意一种确定的：
m＝ceil(M×K 2)，其中，ceil表示向上取整；或者，
m＝floor(M×K 2)，其中，floor表示向下取整。
在另一种可能的实现方式中，终端设备根据预设的m的值，确定第m个码块，从而确定第一时间单元，m为正整数且m小于M。
结合第一方面和上述实现方式，在某些可能的实现方式中，所述第一时间单元是第二时间单元之后的第L个时间单元，其中，所述第二时间单元为用于传输所述传输块对应的解调参考信号的最后一个时间单元，L为正整数。
结合第一方面和上述实现方式，在某些可能的实现方式中，在所述从传输块对应的N个时间单元中，确定第一时间单元之前，所述方法还包括：确定所述N的值大于或等于预设的第一门限；和/或确定传输块包括的码块的数量M大于或等于预设的第二门限；和/或确定所述传输块没有配置额外解调参考信号。
在实际处理过程中，可以运用多种方法中的任意一种方法确定是否需要提前传输反馈信息，也可以运用多种方法中的任意两种方法确定是否需要提前传输反馈信息，也可以同时使用三种方法来确定是否需要提前传输反馈信息，本申请对此不做限定。
在另一种可能的实现方式中，终端设备还可以默认为提前传输反馈信息。
通过上述方案，终端设备和基站可以结合传输块的传输资源和/或该传输块中包括的码块数确定是否需要提前传输反馈信息，从而在提前传输反馈信息能够起到降低数据重传时延的情况下，提前传输反馈信息，降低数据传输时延、提高数据传输的可靠性。这里的传输块的传输资源可以包括传输该传输块的时间单元数、符号数以及DMRS的配置。
第二方面，提供了一种反馈信息的传输方法，包括：从传输块对应的N个时间单元中， 确定第一时间单元，所述第一时间单元是所述N个时间单元中的时间单元，N为正整数；在所述第一时间单元上，接收所述传输块的反馈信息。
本申请实施例提供的反馈信息的传输方法，通过确定数据接收设备提前发送反馈信息的时刻，即确定第一时间单元，实现数据接收设备在第一时间单元发送该反馈信息，数据发送设备在第一时间单元接收该反馈信息，例如NACK。从而使得数据发送设备可以提前进行数据重传，进而降低了数据的重传时延。对于要求在一定时间内传输正确的业务数据来说，降低了数据的重传时延，也就意味着在一定的时延要求下，可以增加重传次数，进而提高了数据传输的可靠性。
结合第二方面，在第二方面的某些实现方式中，所述第一时间单元是所述N个时间单元中的第n个时间单元，n为小于或等于N的正整数，n是根据所述N的值和第一比例系数K 1确定的。
结合第二方面和上述实现方式，在某些可能的实现方式中，所述n是根据以下公式中的任意一种确定的：
n＝ceil(N×K 1)，其中，ceil表示向上取整；或者，
n＝floor(N×K 1)，其中，floor表示向下取整。
结合第二方面和上述实现方式，在某些可能的实现方式中，所述第一时间单元是所述N个时间单元中的第n个时间单元，n为小于或等于N的预设的正整数。
结合第二方面和上述实现方式，在某些可能的实现方式中，所述传输块包括M个码块，所述第一时间单元是所述M个码块中的第m个码块所对应的最后一个时间单元，其中，所述m的取值是根据所述M的值和第二比例系数K 2确定的。
结合第二方面和上述实现方式，在某些可能的实现方式中，所述m是根据以下公式中的任意一种确定的：
m＝ceil(M×K 2)，其中，ceil表示向上取整；或者，
m＝floor(M×K 2)，其中，floor表示向下取整。
结合第二方面和上述实现方式，在某些可能的实现方式中，所述第一时间单元是第二时间单元之后的第L个时间单元，其中，所述第二时间单元为用于传输所述传输块对应的解调参考信号的最后一个时间单元，L为正整数。
结合第二方面和上述实现方式，在某些可能的实现方式中，在所述从传输块对应的N个时间单元中，确定第一时间单元之前，所述方法还包括：确定所述N的值大于或等于预设的第一门限；和/或确定传输块包括的码块的数量M大于或等于预设的第二门限；和/或确定所述传输块没有配置额外解调参考信号。
第三方面，提供了一种通信装置，该通信装置具有实现上述第一方面的方法设计中的终端设备的功能。这些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。
第四方面，提供了一种通信装置，该通信装置具有实现上述第二方面的方法设计中的网络设备(例如基站)的功能。这些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。
第五方面，提供一种终端设备，包括收发器和处理器。可选地，该终端设备还包括存储器。该处理器用于控制收发器收发信号，该存储器用于存储计算机程序，该处理器用于 从存储器中调用并运行该计算机程序，使得该终端设备执行上述第一方面或第一方面任意一种可能的实现方式中的方法。
第六方面，提供一种网络设备，包括收发器和处理器。可选地，该终端设备还包括存储器。该处理器用于控制收发器收发信号，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该终端设备执行上述第二方面或第二方面任意一种可能的实现方式中的方法。
第七方面，提供了一种通信系统，该系统包括上述第三方面的终端设备以及第四方面的网络设备；或者，该系统包括上述第五方面的终端设备以及第六方面的网络设备。
第八方面，提供一种通信装置，该通信装置可以为上述方法设计中的终端设备，或者为设置在终端设备中的芯片。该通信装置包括：处理器，与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面或第一方面任意一种可能的实现方式中终端设备所执行的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
当该通信装置为终端设备时，该通信接口可以是收发器，或，输入/输出接口。
当该通信装置为配置于终端设备中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第九方面，提供了一种通信装置，该通信装置可以为上述方法设计中的网络设备，或者为设置在网络设备中的芯片。该通信装置包括：处理器，与存储器耦合，可用于执行存储器中的指令，以实现上述第二方面或第二方面任意一种可能的实现方式中网络设备所执行的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
当该通信装置为网络设备时，该通信接口可以是收发器，或，输入/输出接口。
当该通信装置为配置于网络设备中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第十方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述各方面中的方法。
第十一方面，提供了一种计算机可读介质，所述计算机可读介质存储有程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述各方面中的方法。
附图说明
图1是适用于本申请实施例的移动通信系统的架构示意图。
图2是本申请实施例提供的一例传输块与码块的示意图。
图3是本申请实施例提供的一例DMRS的配置示意图。
图4是本申请实施例提供的一例反馈信息的传输方法的示意性交互图。
图5是本申请实施例提供的又一例传输块划分示意图。
图6是本申请实施例提供的一例反馈信息的传输装置的示意图。
图7是本申请实施例提供的又一例反馈信息的传输装置的示意图。
图8是本申请实施例提供的又一例反馈信息的传输装置的示意图。
图9是本申请实施例提供的又一例反馈信息的传输装置的示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、第五代(5th generation，5G)移动通信系统或新无线(new radio，NR)通信系统以及未来的移动通信系统等。
图1是适用于本申请实施例的移动通信系统的架构示意图。如图1所示，该移动通信系统100可以包括核心网设备110、无线接入网设备120和至少一个终端设备(如图1中的终端设备130和终端设备140)。终端设备通过无线的方式与无线接入网设备相连，无线接入网设备通过无线或有线方式与核心网设备连接。核心网设备与无线接入网设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端设备可以是固定位置的，也可以是可移动的。图1只是示意图，该通信系统中还可以包括其它网络设备，如还可以包括无线中继设备和无线回传设备，在图1中未画出。本申请的实施例对该移动通信系统中包括的核心网设备、无线接入网设备和终端设备的数量不做限定。
在移动通信系统100中，无线接入网设备120是终端设备通过无线方式接入到该移动通信系统中的接入设备。该无线接入网设备120可以是：基站、演进型基站(evolved node B，基站)、家庭基站、无线保真(wireless fidelity，WIFI)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为NR系统中的gNB，或者，还可以是构成基站的组件或一部分设备，如汇聚单元(central unit，CU)、分布式单元(distributed unit，DU)或基带单元(baseband unit，BBU)等。应理解，本申请的实施例中，对无线接入网设备所采用的具体技术和具体设备形态不做限定。在本申请中，无线接入网设备简称网络设备，如果无特殊说明，在本申请中，网络设备均指无线接入网设备。在本申请中，网络设备可以是指网络设备本身，也可以是应用于网络设备中完成无线通信处理功能的芯片。
该移动通信系统100中的终端设备也可以称为终端、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等。本申请实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑，还可以是应用于虚拟现实(virtual reality，VR)、增强现实(augmented reality，AR)、工业控制(industrial control)、无人驾驶(self driving)、远程医疗(remote medical)、智能电网(smart grid)、运输安全(transportation safety)、智慧城市(smart city)以及智慧家庭(smart home)等场景中的无线终端。本申请中将前述终端设备及可应用于前述终端设备的芯片统称为终端设备。应理解，本申请实施例对终端设备所采用的具体技术和具体设备形态不做限定。
本申请的实施例可以适用于下行数据传输，也可以适用于上行数据传输，还可以适用于设备到设备(device to device，D2D)的数据传输。对于下行数据传输，数据的发送设备是网络设备，数据的接收设备是终端设备，终端设备接收到下行数据后，会向网络设备 发送反馈信息，用于通知网络设备该下行数据是否被终端设备正确接收。对于上行数据传输，数据的发送设备是终端设备，数据的接收设备是网络设备，网络设备接收到上行数据后，会向终端设备发送反馈信息，用于通知终端设备该上行数据是否被网络设备正确接收。对于D2D的信号传输，数据的发送设备是终端设备，数据的接收设备也是终端设备。本申请的实施例数据的传输方向不做限定。
应理解，本申请实施例中的方式、情况、类别以及实施例的划分仅是为了描述的方便，不应构成特别的限定，各种方式、类别、情况以及实施例中的特征在不矛盾的情况下可以相结合。
还应理解，本申请实施例中的“第一”、“第二”以及“第三”仅为了区分，不应对本申请构成任何限定。例如，本申请实施例中的“第一时间单元”，表示传输反馈信息的时刻。
还应理解，在本申请的各种实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
还需要说明的是，本申请实施例中，“预先设定”、“预先定义”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定，例如本申请实施例中预设值、预先设定的常数、预设的第一门限、预设的第二门限等。
还需要说明的是，在本申请实施例中，“反馈信息”包括肯定应答(acknowledgement，ACK)和“否定应答(negative acknowledgement，NACK)”,例如，对于终端设备来说，反馈信息的传输也可以理解为ACK/NACK的传输。此外，ACK/NACK可以通过物理上行信道发送。
还需要说明的是，“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。下面将结合附图详细说明本申请提供的技术方案。
为便于理解本申请实施例，下面先对本申请涉及到的几个概念进行简单介绍。
1、时间单元和时域符号
基站和终端设备用于无线通信的时域资源可以划分为多个时间单元。并且，在本申请实施例中，多个时间单元可以是连续的，也可以是某些相邻的时间单元之间设有预设的间隔，本申请实施例并未特别限定。
在本申请实施例中，对一个时间单元的长度不做限定。例如，1个时间单元可以是一个或多个子帧；或者，也可以是一个或多个时隙；或者，也可以是一个或多个符号。
在本申请的实施例中，符号也称为时域符号，可以是正交频分复用(orthogonal frequency division multiplexing，OFDM)符号，也可以是单载波频分多址(single carrier frequency division multiple access，SC-FDMA)符号，其中SC-FDMA又称为带有转换预编码的正交频分复用(orthogonal frequency division multiplexing with transform precoding，OFDM with TP)。
在本申请实施例中，多个时间单元在时域上存在时序关系，且任意两个时间单元对应的时间长度可以相同也可以不同。
2、传输块(transport block，TB)与码块(code block，CB)
媒体接入控制(medium access control，MAC)层和物理层之间有传输信道，物理层以传输信道的形式向高层提供数据服务。通常，MAC层向物理层发送数据是以一个TB为单位。物理层对来自MAC层的TB数据以及物理层的控制信息，可以先按照增加循环冗余校验(cyclic redundancy check，CRC)、码块分割、信道编码、速率匹配和码块级联(concatenation)等流程处理，然后再进行加扰、调制、层映射、预编码等操作，最后可通过空口发送出去。
当TB中的数据量比较大时，物理层会对TB进行分段，形成多个CB。具体地，从编码效率、编码器限制和处理时延等各方面考虑，确定信道编码时可以处理的最大编码长度K max。K max可以为6144bits，也可以是8448bits或者3840bits等，本申请对此不做限制。K max可以根据编码的配置，从不同的预配值中选取一个值。添加过CRC比特的传输块比特序列的长度如果大于K max，就需要对传输块进行分割，以满足信道编码的要求。输入给编码器进行一次编码的比特序列可以称为一个CB。
在数据传输的过程中，基站的物理层将一个TB拆分成多个CB，然后对每个CB进行编码。终端设备在收到数据后，分别对每个CB进行解码。如果一个TB的所有CB都接收正确，则认为这个TB接收正确，如果一个TB中有任何一个CB接收错误，则认为此TB接收错误。终端设备会根据接收TB的正确与否，来给基站发送反馈信息。如果TB接收错误，则终端设备向基站反馈NACK；如果TB接收正确，则终端设备向基站反馈ACK。当基站收到NACK反馈时，会重新发送该TB直到收到ACK反馈，或者达到配置的最大重传次数。
图2是TB切分为多个CB的一例示意图。如图2所示，一个TB被切分成了5个CB：CB 1、CB 2、CB 3、CB 4和CB 5。在现有的ACK/NACK反馈信息的传输过程中，如果终端设备的1个TB包括的5个CB全部正确接收，则终端设备向基站发送ACK。换句话说，如果要反馈ACK，则必须等整个TB包括的5个CB全部正确接收才能反馈。因此，ACK的最早反馈时间为CB 5接收结束的时间。而NACK可以在更早的时间进行反馈，例如，如果CB 1接收错误，则立刻可以进行NACK的反馈，因为不管后面的4个CB接收正确与否，有一个CB错误，就需要反馈NACK。当基站接收到NACK，可以立即重传错误的TB直到传输成功。可见，提前反馈NACK能够降低重传的时延。因此，通过采用本申请实施例中的技术方案可以有效降低URLLC业务的时延；同时，在URLLC业务超时前，可以增加URLLC业务的重传机会，从而可以提高URLLC业务的传输可靠性。
但是，提前反馈NACK并不适用于所有数据传输过程，换言之，并不是所有的情况，提前反馈NACK都是有意义的。如果TB占用的符号很少，例如只有2个符号，那么提前反馈就没有意义，最多提前1个符号，甚至如果TB只有1个符号，那么就无法提前反馈。
此外，对于反馈NACK的时间点，目前并没有一种方案来详细记载，在本申请实施例中，将提供一种提前传输反馈信息的方法，确定当前传输的情况是否需要提前反馈NACK，以及提前反馈NACK的时间点。
3、下行数据的传输
基站向终端设备发送下行控制信息(downlink control information，DCI)，解调参考信号(demodulation reference signal，DMRS)和下行数据。终端设备根据该DCI可以确定 用于发送该下行数据的时频资源、用于发送该下行数据的反馈信息的时频资源以及该下行数据采用的编码调制方式等信息。终端设备根据DMRS可以进行信道估计，并基于信道估计的结果和DCI中的信息对该下行数据进行解调译码。
终端设备在接收到DMRS后，才可以进行信道估计，进而对下行数据进行解调。在一个物理下行共享信道(physical downlink shared channel，PDSCH)中，可能会配置多个DMRS，终端设备一般需要将一个PDSCH中的所有DMRS全部接收完成，才能完成信道估计。
若终端设备针对该下行数据解调译码成功，则表示该终端设备成功接收该下行数据，该终端设备会生成ACK，并且，在该DCI中所指示的时频资源上发送ACK；若该终端设备针对该下行数据解调译码失败，则表示该终端设备未成功接收该下行数据，该终端设备会生成NACK，并且，在该DCI中所指示的时频资源上发送NACK。
图3是一种可能的DMRS的配置示意图。图3中，若终端设备配置了额外DMRS(additional DMRS)，如DMRS 1和DMRS 2，那么NACK的最早反馈时间在DMRS 2接收完成的时刻，即DMRS 2占用的最后一个符号结束后可以开始反馈NACK。此种情况下，即使提前反馈NACK，NACK的反馈时刻也已经接近传输块全部接收完成的时刻，意义不大。若终端设备只配置了一个DMRS，如DMRS 3，那么NACK的最早反馈时间在DMRS 3接收完成的时刻，此时如果提前反馈NACK，可以降低数据重传的时延。
为了降低数据重传的时延，本申请实施例提供一种反馈信息的传输方法，通过确定数据接收设备提前发送反馈信息的时刻，即确定第一时间单元，实现数据接收设备在第一时间单元发送该反馈信息，数据发送设备在第一时间单元接收该反馈信息，例如NACK。从而使得数据发送设备可以提前进行数据重传，进而降低了数据的重传时延。对于要求在一定时间内传输正确的业务数据来说，降低了数据的重传时延，也就意味着在一定的时延要求下，可以增加重传次数，进而提高了数据传输的可靠性。在本申请的实施例中，以下行数据传输为例进行描述，即以基站作为数据的发送设备、终端设备作为数据的接收设备为例进行描述，可以理解的是，本申请的实施例也可以应用于上行数据传输，也可以应用于D2D的数据传输。
首先，介绍本申请实施例提供的确定是否需要提前传输反馈信息的方法，下面从终端设备的角度来对该方法进行详细的介绍。可以理解的是，该方法同样适用于作为数据的发送设备的基站。
方法一
终端设备确定传输块的传输资源所包括的时间单元数N的值大于或等于预设的第一门限时，确定需要提前传输反馈信息。一个传输块对应N个时间单元，这里的N个时间单元用于传输该传输块。
可选地，一个时间单元为一个符号。当传输块所包括的符号数N的值大于或等于预设的第一门限时，终端设备确定需要提前传输反馈信息。具体地，通过预设的第一门限n 1，当N大于或等于n 1时，才开启提前传输，否则，不开启提前传输。应理解，终端设备可以通过DCI准确获知传输块的信息，例如包括传输该传输块的时间单元数或者符号数N。例如，第一门限n 1＝5，当传输块所对应的时间单元数N大于或等于5时，如对应8个时间单元，终端设备确定需要提前传输反馈信息。
应理解，第一门限可以是预设的常数，也可以是由高层信令配置的常数，或者是通过物理层信令配置的常数。在本申请的实施例中，高层信令可以是无线资源控制(radio resource control，RRC)信令，也可以是MAC层信令；物理层信令可以是DCI。
方法二
终端设备确定传输块所包括的码块的数量M的值大于或等于预设的第二门限时，确定需要提前传输反馈信息。
当M大于或等于预设的第二门限m 1时，开启提前传输NACK，否则，不开启提前传输。应理解，终端设备可以通过DCI准确获知传输块的信息，例如终端设备可以明确知道传输块包括的码块数M。例如，第二门限m 1＝5，当传输块所包括的码块数M大于或等于5时，如包括7个码块，终端设备确定需要提前传输反馈信息。
应理解，第二门限可以是预设的常数，或由高层信令配置的常数，第二门限也可以通过物理层信令通知终端设备，例如DCI。本申请对此不做限定。
方法三
终端设备确定本次数据传输没有配置额外解调参考信号时，确定需要提前传输反馈信息。
如前述，在终端设备接收下行数据的过程中，终端设备必须先接收完DMRS才能进行解码。目前，终端设备的DMRS配置可以分为如图3所示的两种情况，一种是配置了额外DMRS的情况。对于这种情况，在接收完DMRS的时候，已经接近全部接收完该TB对应的时间单元，提前传输反馈信息的意义不大。还有一种是只配置了前置DMRS，这时DMRS接收成功后，距离全部接收完该TB还有一段时间，可以开启提前传输。
此外，终端设备可以预先获知DMRS的配置情况，例如，终端设备可以高层信令或通过DCI来获知本次数据传输是否配置了额外DMRS。本申请对于终端设备获知DMRS配置情况的具体方法不做限定。
方法四
终端设备根据基站的配置，确定是否需要提前传输反馈信息。
除了上述三种用来判断终端设备是否需要提前传输反馈信息的方法之外，还可以由基站确定终端设备是否开启提前传输反馈信息。例如，基站可以向终端设备发送一个指示信息，用于指示该终端设备提前传输反馈信息。
具体地，基站可以通过高层信令指示终端设备提前传输反馈信息；基站也可以通过物理层信令通知终端设备提前传输反馈信息。
可选地，终端设备还可以默认为提前传输反馈信息。
以上列举了多种用来判断终端设备是否需要提前传输反馈信息的方法，应理解，在实际处理过程中，可以运用以上多种方法中的任意一种方法确定终端设备是否需要提前传输反馈信息，也可以结合运用以上方法中的任意两种方法确定是否需要提前传输反馈信息，也可以结合使用三种方法来确定是否需要提前传输反馈信息，本申请对此不做限定。
通过上述方案，终端设备和基站可以结合传输块的传输资源和/或该传输块中包括的码块数确定是否需要提前传输反馈信息，从而在提前传输反馈信息能够起到降低数据重传时延的情况下，提前传输反馈信息，降低数据传输时延、提高数据传输的可靠性。这里的传输块的传输资源可以包括传输该传输块的时间单元数、符号数以及DMRS的配置。
图4是本申请实施例提供的一例反馈信息的传输方法400的示意性交互图。下面，对方法400的每个步骤进行详细说明。
应理解，在本申请实施例中，以终端设备和基站作为执行方法400的执行主体为例，对方法400进行说明。作为示例而非限定，执行方法400的执行主体也可以是应用于终端设备的芯片和应用于基站的芯片。
S410，基站向终端设备发送传输块。传输块对应N个时间单元，N为正整数。
传输块对应N个时间单元，可以理解为用于传输该传输块的时域资源为N个时间单元。
S420，从传输块对应的N个时间单元中，确定第一时间单元，该第一时间单元是N个时间单元中的时间单元，N为正整数。
如图5所示，用于传输该传输块的时域资源为N个时间单元。现有的方案中，终端设备发送反馈信息的时间点在传输块全部接收完成之后，例如在图5中时间单元N的结束位置之后。为了降低传输数据的时延，可以提前发送反馈信息，但是并没有明确提前发送反馈信息的时刻。在本申请实施例中，将发送反馈信息的时刻称为第一时间单元，即在第一时间单元内发送反馈信息。在S420中，可以通过以下三种方法中的任意一种来确定该第一时间单元。
方法一
当传输块对应N个时间单元，假设该第一时间单元是N个时间单元中的第n个时间单元，n为小于或等于N的正整数。可以通过以下方法确定n的值，从而将第n个时间单元确定为第一时间单元。其中，n是根据传输块所对应的时间单元数N的值确定的。
应理解，本申请实施例对确定n的值的执行主体不做限定。例如，可以是终端设备根据传输块所对应的时间单元数N的值确定，再将n的值通知基站；也可以是基站根据传输块所对应的时间单元数N的值确定，再将n的值通知终端设备；也可以是终端设备和基站都根据约定的方法确定n的值，从而确保终端设备和基站确定的n值相等。
可选地，n是根据传输块所对应的时间单元数N的值和第一比例系数K 1确定的。
可选地，K 1可以是预设值。例如，K 1为0.5、0.75等。
具体地，可以根据以下公式，确定n的值，并进一步将第n个时间单元确定为第一时间单元。
(1)n＝N×K 1，例如，K 1＝0.5，N＝12，那么n＝N×K 1＝12×0.5＝6，则在传输块的起始符号后第6个符号发送反馈信息。可以在一定情况下使用该计算方法，使得得到的计算结果n为正整数。
(2)n＝ceil(N×K 1)，其中，ceil表示向上取整，或者表示为
Figure PCTCN2019090593-appb-000001
例如，K 1＝0.5，N＝13，那么n＝ceil(N×K 1)＝ceil(13×0.5)＝7，则在传输该传输块的第7个符号发送反馈信息。
(3)n＝floor(N×K 1)，其中，floor表示向下取整，或者表示为
Figure PCTCN2019090593-appb-000002
例如，K 1＝0.5，N＝13，那么n＝ceil(N×K 1)＝ceil(13×0.5)＝6，则在传输该传输块的第6个符号发送反馈信息。
在另一种可能的实现方式中，n可以是预设的值，也可以是通过高层信令配置的，还可以是通过物理层信令配置的，其中，n为小于或等于N的正整数。本申请对于n的配置 方法不做限定。
方法二
当传输块包括M个码块，第一时间单元是该M个码块中的第m个码块所对应的最后一个时间单元，其中，m的取值是根据传输块所包括的码块的数量M的值确定的。
应理解，本申请实施例对确定m的值的执行主体不做限定。例如，可以是终端设备根据传输块所包括的码块的数量M的值确定，再将m的值通知基站；也可以是基站根据传输块所包括的码块的数量M的值确定，再将m的值通知终端设备；也可以是终端设备和基站都根据约定的方法确定m的值，从而确保终端设备和基站确定的m值相等。
可选地，m是根据传输块所包括的码块的数量M的值和第二比例系数K 2确定的。
可选地，K 2可以是预设值。例如，K 2为0.5、0.75等。
具体地，可以根据以下公式，确定m的值，并进一步将第m个码块对应的最后一个时间单元确定为该第一时间单元。
(1)m＝M×K 2，例如，K 2＝0.5，M＝12，那么m＝M×K 2＝12×0.5＝6，则对于该传输块，在第6个码块的结束位置所对应的最后一个时间单元发送反馈信息。可以在一定情况下使用该计算方法，使得得到的计算结果m为正整数。
(2)m＝ceil(M×K 2)，其中，ceil表示向上取整，或者表示为
Figure PCTCN2019090593-appb-000003
例如，K 2＝0.5，M＝13，那么m＝ceil(M×K 2)＝ceil(13×0.5)＝7，则对于该传输块，在第7个码块的结束位置所对应的最后一个时间单元发送反馈信息。
(3)m＝floor(M×K 2)，其中，floor表示向下取整，或者表示为
Figure PCTCN2019090593-appb-000004
例如，K 2＝0.5，M＝13，那么m＝ceil(M×K 2)＝ceil(13×0.5)＝6，则对于该传输块，在第6个码块的结束位置所对应的最后一个时间单元发送反馈信息。
在另一种可能的实现方式中，m可以是预设的值，也可以是通过高层信令配置的，还可以是通过物理层信令配置的，其中，m为小于M的正整数。本申请对于m的配置方法不做限定。
方法三
第一时间单元是第二时间单元之后的第L个时间单元，其中，第二时间单元为用于传输该传输块对应的解调参考信号的最后一个时间单元，L为正整数。
还应理解，本申请实施例对确定第二时间单元的执行主体不做限定。例如，可以是终端设备根据传输块对应的解调参考信号确定第二时间单元，再将第二时间单元通知基站；也可以是基站根据传输块对应的解调参考信号确定第二时间单元，再将第二时间单元通知终端设备；也可以是终端设备和基站都根据约定的方法确定第二时间单元，从而确保终端设备和基站确定的第二时间单元是相同的。
例如，终端设备确定了传输块的DMRS占用的最后一个符号所对应的第L 0个时间单元为第二时间单元，则第一时间单元可以是第L 0个时间单元之后的第L个时间单元，发送反馈信息的时刻位于第L 0+L个时间单元。
可选地，L个时间单元可以对应于终端设备处理下行数据的时段。终端设备在接收下行数据过程中，接收到DMRS后，才可以进行信道估计，进而，终端设备再基于信道估计的结果和DCI的信息对该下行数据进行解调译码，因此L个时间单元的具体含义可以是以下任一种定义：
定义1、处理下行数据的时段包括终端设备进行信道估计和对下行数据进行解调译码占用的时段。
定义2、处理下行数据的时段包括终端设备对下行数据进行解调译码占用的时段。
本申请实施例对终端设备处理下行数据的处理时段不做任何限定。
可选地，L可以是预设的常数，也可以是由高层信令配置的，还可以是通过物理层信令配置的。
应理解，上文中为便于理解，以第一时间单元为一个时间单元为例详细说明了确定第一时间单元的几种可能的实现方式，但这不应对本申请构成任何限定。终端设备和基站可以通过一个时间单元传输反馈信息，也可以通过多个时间单元传输反馈信息。具体地，当终端设备通过多个时间单元发送反馈信息时，该第一时间单元可以是多个时间单元中的任意一个时间单元，终端设备可以根据该第一时间单元确定发送反馈信息的时段。例如，该第一时间单元可以是该多个时间单元中的第一个时间单元；或者该第一时间单元可以是该多个时间单元中的最后一个时间单元；或者该第一时间单元可以是该多个时间单元中的中间的某个时间单元，终端设备和基站可以根据确定的该第一时间单元来确定多个时间单元所对应的时段。
S430，终端设备在该第一时间单元上，发送该传输块的反馈信息。相应地，基站在该第一时间单元上接收该传输块的反馈信息。
通过S420确定了发送传输块的反馈信息的第一时间单元，终端设备在该第一时间单元上发送反馈信息，基站也对应地确定第一时间单元，在该第一时间单元上接收反馈信息。基站接收到反馈信息后，对该传输块进行重传。
通过上述方案，终端设备不需要等到整个传输块被全部接收之后才发送反馈信息，而可以预先确定传输反馈信息的时刻，即，第一时间单元。该第一时间单元可以是用于传输该传输块的N个时间单元中的某一个时间单元，也就是在接收该传输块的同时，也可以发送该反馈信息。相比于现有技术而言，可以降低由于等待整个传输块传输完成才发送反馈信息可能带来的时延。从整体上说，可以降低数据重传的时延，提高数据传输的可靠性。
此外，由于终端设备和基站可以结合传输块的传输资源和/或该传输块中包括的码块数确定是否需要提前传输反馈信息，从而在提前传输反馈信息能够起到降低数据重传时延的情况下，提前传输反馈信息，降低数据传输时延、提高数据传输的可靠性。这里的传输块的传输资源可以包括传输该传输块的时间单元数、符号数以及DMRS的配置。
应理解，上述介绍的确定是否需要提前发送反馈信息和确定提前发送反馈信息的时刻可以单独应用于数据传输过程，也可以组合应用于同一个数据传输过程。例如，在任何传输数据的过程中，都提前传输反馈信息，只应用上述确定提前发送反馈信息的时刻的方法400；或者，仅仅应用上述是否需要提前发送反馈信息的方法判断是否开启提前传输；又或者，在传输数据的过程中，先通过是否需要提前发送反馈信息的方法判断是否开启提前传输，当需要提前传输反馈信息时，通过上述确定提前发送反馈信息的时刻的方法400来确定发送和接收反馈信息的时刻。本申请对此不做限定。
以上结合图2至图5对本申请实施例的反馈信息的传输方法做了详细说明。以下，结合图6至图9对本申请实施例的反馈信息的传输装置进行详细说明。
图6示出了本申请实施例的传输反馈信息的装置600的示意性框图，该装置600可以 对应上述方法400中描述的终端设备，也可以是应用于终端设备的芯片或组件，并且，该装置600中各模块或单元分别用于执行上述方法400中终端设备所执行的各动作或处理过程，如图6所示，该通信装置600可以包括：确定单元610和通信单元620。
该确定单元610用于从传输块对应的N个时间单元中，确定第一时间单元，该第一时间单元是该N个时间单元中的时间单元，N为正整数。
该通信单元620用于在该第一时间单元上，接收该传输块的反馈信息。
具体地，该确定单元610用于执行方法400中的S420，该通信单元620用于执行方法400中的S410和S430，各单元执行上述相应步骤的具体过程在方法400中已经详细说明，为了简洁，此处不加赘述。
图7示出了本申请实施例的传输反馈信息的装置700的示意性框图，该装置700可以对应(例如，可以应用于或本身即为)上述方法400中描述的基站，并且，该装置700中各模块或单元分别用于执行上述方法400中基站所执行的各动作或处理过程，如图7所示，该通信装置700可以包括：确定单元710和通信单元720。
该确定单元710用于从传输块对应的N个时间单元中，确定第一时间单元，该第一时间单元是该N个时间单元中的时间单元，N为正整数。
该通信单元720用于在该第一时间单元上，接收该传输块的反馈信息。
具体地，该确定单元710用于执行方法400中的S420，该通信单元720用于执行方法400中的S410和S430，各单元执行上述相应步骤的具体过程在方法400中已经详细说明，为了简洁，在此不加赘述。
图8是本申请实施例提供的终端设备800的结构示意图。如图8所示，该终端设备800包括处理器810和收发器820。可选地，该终端设备800还包括存储器830。其中，处理器810、收发器820和存储器830之间通过内部连接通路互相通信，传递控制和/或数据信号，该存储器830用于存储计算机程序，该处理器810用于从该存储器830中调用并运行该计算机程序，以控制该收发器820收发信号。
上述处理器810和存储器830可以合成一个处理装置，处理器810用于执行存储器830中存储的程序代码来实现上述方法实施例中终端设备的功能。具体实现时，该存储器830也可以集成在处理器810中，或者独立于处理器810。收发器820可以通过收发电路的方式来实现。
上述终端设备还可以包括天线840，用于将收发器820输出的上行数据或上行控制信令通过无线信号发送出去，或者将下行数据或下行控制信令接收后发送给收发器820进一步处理。
应理解，该装置800可对应于根据本申请实施例的方法400中的终端设备，该装置800也可以是应用于终端设备的芯片或组件。并且，该装置800中的各模块实现图4中方法400中的相应流程，具体地，该存储器830用于存储程序代码，使得处理器810在执行该程序代码时，控制该处理器810用于执行方法400中的S420，该收发器820用于执行方法400中的S410和S430，各单元执行上述相应步骤的具体过程在方法400中已经详细说明，为了简洁，在此不加赘述。
图9是本申请实施例提供的网络设备900的结构示意图。如图9所示，该网络设备900(例如基站)包括处理器910和收发器920。可选地，该网络设备900还包括存储器 930。其中，处理器910、收发器920和存储器930之间通过内部连接通路互相通信，传递控制和/或数据信号，该存储器930用于存储计算机程序，该处理器910用于从该存储器930中调用并运行该计算机程序，以控制该收发器920收发信号。
上述处理器910和存储器930可以合成一个处理装置，处理器910用于执行存储器930中存储的程序代码来实现上述方法实施例中基站的功能。具体实现时，该存储器930也可以集成在处理器910中，或者独立于处理器910。收发器920可以通过收发电路的方式来实现。
上述网络设备还可以包括天线940，用于将收发器920输出的下行数据或下行控制信令通过无线信号发送出去，或者将上行数据或上行控制信令接收后发送给收发器820进一步处理。
应理解，该装置900可对应于根据本申请实施例的方法400中的基站，该装置900也可以是应用于基站的芯片或组件。并且，该装置900中的各模块实现图4中方法400中的相应流程，具体地，该存储器930用于存储程序代码，使得处理器910在执行该程序代码时，控制该处理器910用于执行方法400中的S420，该收发器920用于执行方法400中的S410和S430，各单元执行上述相应步骤的具体过程在方法400中已经详细说明，为了简洁，在此不再赘述。
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示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合的方式来实现。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申请的范围。
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，在此不加赘述。
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，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。另一点，所显示或讨论的相互之间的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。
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物理实体中，也可以是各个单元单独对应一个物理实体，也可以两个或两个以上单元集成在一个物理实体中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (20)

  1. 一种反馈信息的传输方法，其特征在于，包括：
    从传输块对应的N个时间单元中，确定第一时间单元，所述第一时间单元是所述N个时间单元中的时间单元，N为正整数；
    在所述第一时间单元上，发送所述传输块的反馈信息。
  2. 一种反馈信息的传输方法，其特征在于，包括：
    从传输块对应的N个时间单元中，确定第一时间单元，所述第一时间单元是所述N个时间单元中的时间单元，N为正整数；
    在所述第一时间单元上，接收所述传输块的反馈信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一时间单元是所述N个时间单元中的第n个时间单元，n为小于或等于N的正整数，n是根据所述N的值和第一比例系数K 1确定的。
  4. 根据权利要求3所述的方法，其特征在于，所述n是根据以下公式中的任意一种确定的：
    n＝ceil(N×K 1)，其中，ceil表示向上取整；或者，
    n＝floor(N×K 1)，其中，floor表示向下取整。
  5. 根据权利要求1或2所述的方法，其特征在于，所述第一时间单元是所述N个时间单元中的第n个时间单元，其中，n为小于或等于N的预设的正整数。
  6. 根据权利要求1或2所述的方法，其特征在于，所述传输块包括M个码块，所述第一时间单元是所述M个码块中的第m个码块所对应的最后一个时间单元，其中，所述m的取值是根据所述M的值和第二比例系数K 2确定的。
  7. 根据权利要求6所述的方法，其特征在于，所述m是根据以下公式中的任意一种确定的：
    m＝ceil(M×K 2)，其中，ceil表示向上取整；或者，
    m＝floor(M×K 2)，其中，floor表示向下取整。
  8. 根据权利要求1或2所述的方法，其特征在于，所述第一时间单元是第二时间单元之后的第L个时间单元，其中，所述第二时间单元为用于传输所述传输块对应的解调参考信号的最后一个时间单元，L为正整数。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，在所述从传输块对应的N个时间单元中，确定第一时间单元之前，所述方法还包括：
    确定所述N的值大于或等于预设的第一门限；和/或
    确定传输块包括的码块的数量M大于或等于预设的第二门限；和/或
    确定所述传输块没有配置额外解调参考信号。
  10. 一种通信装置，其特征在于，包括：
    确定单元，用于从传输块对应的N个时间单元中，确定第一时间单元，所述第一时间单元是所述N个时间单元中的时间单元，N为正整数；
    通信单元，用于在所述第一时间单元上，发送所述传输块的反馈信息。
  11. 一种通信装置，其特征在于，包括：
    确定单元，用于从传输块对应的N个时间单元中，确定第一时间单元，所述第一时间单元是所述N个时间单元中的时间单元，N为正整数；
    通信单元，用于在所述第一时间单元上，接收所述传输块的反馈信息。
  12. 根据权利要求10或11所述的装置，其特征在于，所述第一时间单元是所述N个时间单元中的第n个时间单元，n为小于或等于N的正整数，n是根据所述N的值和第一比例系数K 1确定的。
  13. 根据权利要求12所述的装置，其特征在于，所述n是根据以下公式中的任意一种确定的：
    n＝ceil(N×K 1)，其中，ceil表示向上取整；或者，
    n＝floor(N×K 1)，其中，floor表示向下取整。
  14. 根据权利要求10或11所述的装置，其特征在于，所述第一时间单元是所述N个时间单元中的第n个时间单元，其中，n为小于或等于N的预设的正整数。
  15. 根据权利要求10或11述的装置，其特征在于，所述传输块包括M个码块，所述第一时间单元是所述M个码块中的第m个码块所对应的最后一个时间单元，其中，所述m的取值是根据所述M的值和第二比例系数K 2确定的。
  16. 根据权利要求15所述的装置，其特征在于，所述m是根据以下公式中的任意一种确定的：
    m＝ceil(M×K 2)，其中，ceil表示向上取整；或者，
    m＝floor(M×K 2)，其中，floor表示向下取整。
  17. 根据权利要求10或11所述的装置，其特征在于，所述第一时间单元是第二时间单元之后的第L个时间单元，其中，所述第二时间单元为用于传输所述传输块对应的解调参考信号的最后一个时间单元，L为正整数。
  18. 根据权利要求10至17中任一项所述的装置，其特征在于，所述确定单元在从传输块对应的N个时间单元中，确定第一时间单元之前，还用于：
    确定所述N的值大于或等于预设的第一门限；和/或
    确定传输块包括的码块的数量M大于或等于预设的第二门限；和/或
    确定所述传输块没有配置额外解调参考信号。
  19. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，当所述计算机程序被执行时，实现如权利要求1至9中任意一项所述的方法。
  20. 一种芯片系统，其特征在于，所述芯片系统包括：
    存储器，用于存储指令；
    处理器，用于从所述存储器中调用并运行所述指令，使得安装有所述芯片系统的通信设备执行如权利要求1至9中任意一项所述的方法。
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