WO2019028916A1 - Data transmission method and device - Google Patents

Data transmission method and device Download PDF

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Publication number
WO2019028916A1
WO2019028916A1 PCT/CN2017/097272 CN2017097272W WO2019028916A1 WO 2019028916 A1 WO2019028916 A1 WO 2019028916A1 CN 2017097272 W CN2017097272 W CN 2017097272W WO 2019028916 A1 WO2019028916 A1 WO 2019028916A1
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WO
WIPO (PCT)
Prior art keywords
control information
downlink control
bit
bits
uplink data
Prior art date
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PCT/CN2017/097272
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French (fr)
Chinese (zh)
Inventor
南方
余政
赵越
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201780093613.6A priority Critical patent/CN110999153B/en
Priority to PCT/CN2017/097272 priority patent/WO2019028916A1/en
Publication of WO2019028916A1 publication Critical patent/WO2019028916A1/en

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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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems

Definitions

  • the present application relates to the field of communications, and in particular, to a data transmission method and apparatus in the field of communications.
  • LTE long term evolution
  • the downlink data is carried by a physical downlink shared channel (PDSCH)
  • the uplink data is carried by a physical uplink shared channel (PUSCH).
  • the network device indicates information such as resource allocation and modulation and coding mode of the PDSCH and the PUSCH to the terminal device by using downlink control information (DCI).
  • DCI can be carried by a physical downlink control channel (PDCCH).
  • the uplink and downlink data transmission of the LTE system adopts a hybrid automatic repeat request (HARQ) technology
  • HARQ hybrid automatic repeat request
  • the specific processing flow is: Each time the data is sent contains error correction and error detection bits. If the number of error bits in the received data is within the error correction capability, the error is corrected by itself; when the error is serious and the error correction capability is exceeded, then Let the sender resend the data.
  • LTE adopts the multi-process stop-and-wait HARQ implementation mode.
  • the receiving end feeds back an acknowledgement (ACK) to the transmitting end, otherwise the feedback is negative.
  • a negative acknowledgment (NACK) indicates a retransmission.
  • the sender waits for ACK/NACK feedback, the process temporarily suspends the transmission.
  • the feedback selects whether to send new data or retransmit the last data sent by the process according to whether the ACK or NACK is fed back.
  • the ACK/NACK feedback of the uplink data is carried by a physical hybrid ARQ indicator channel (PHICH).
  • PHICH physical hybrid ARQ indicator channel
  • the PDCCH and PHICH occupied by the LTE system may have a frequency width of the entire system and may reach a maximum of 20 MHz.
  • the receiving bandwidth of the terminal device is smaller than the system bandwidth, the DCI carried by the PDCCH and the ACK/NACK carried by the PHICH cannot be received.
  • the DCI can be carried by the MPDCCH because the bandwidth occupied by the physical downlink control channel (MPDCCH) of the machine type communication is not more than one narrowband.
  • MPDCCH physical downlink control channel
  • NDI new data indicator
  • the function of the ACK/NACK feedback in the DCI carried by the MPDCCH can be implemented by the NDI bit in the DCI carried by the MPDCCH, so that the terminal device does not need to receive the ACK/NACK of the PHICH bearer.
  • the method for implicitly receiving the uplink data of the PUSCH by the NDI in the DCI is implicitly fed back.
  • the base station needs to wait until the next uplink data of the terminal device.
  • the NDI indicates new uplink data.
  • the terminal device may need to wait for a period of time before the next uplink data needs to be sent. Therefore, the network device also needs to wait for a period of time.
  • the NDI feedback in the DCI can be correctly received, so that the terminal device may not be able to know in time whether the uplink data is correctly received by the network device, that is, the network device has a large delay in the feedback of the uplink data.
  • the present application provides a data transmission method and apparatus, in order to reduce the feedback delay of network equipment to uplink data.
  • the first aspect provides a data transmission method, where the method includes: the network device receives the uplink data, and sends the first downlink control information, where the first bit of the first downlink control information has a value of 1, the first The number of one bit is greater than or equal to 1. The first bit is used to indicate that the first downlink control information is used to indicate that the network device acknowledges or negatively acknowledges the uplink data.
  • the terminal device sends uplink data, and receives the first downlink control information.
  • the terminal device may determine, according to the first downlink control information, whether the uplink data is correctly received by the network device.
  • the network device may send the first downlink control information to the terminal device, and feedback the receiving condition of the uplink data, without The technology waits until the next time the terminal device needs to send uplink data, so that it is beneficial to reduce the feedback delay of the network device to the uplink data, thereby improving system performance.
  • the method before the network device receives the uplink data sent by the terminal device, the method further includes:
  • the network device sends the second downlink control information to the terminal device.
  • the value of the at least one bit is 0, and the second downlink control information is used by the network device to schedule the physical uplink. Shared channel
  • the terminal device receives the second downlink control information that is sent by the network device, where the value of the at least one bit is 0 in the first bit of the second downlink control information, and the second downlink control information is used to schedule the physics.
  • Uplink shared channel ;
  • the terminal device sends the uplink data to the network device according to the second downlink control information.
  • the downlink control information that is sent by the network device to the terminal device may be divided into the first downlink control information and the second downlink control information.
  • the first downlink control information is used by the network device to feed back whether the uplink data sent by the terminal device is correctly received.
  • the first downlink control information may not be used by the network device to schedule a physical uplink shared channel.
  • the first downlink control information may also be used for the physical uplink shared channel that the network device schedules retransmission.
  • the second downlink control information is used by the network device to schedule a physical uplink shared channel.
  • the first downlink control information may be sent at any time after the network device determines whether the uplink data is correctly received.
  • the second downlink control information can only be sent when the network device schedules the terminal device for data transmission.
  • the value of the first bit in the first control information is set to 1 by using the first bit in the second downlink control information, and the value of the first bit is not 1. Therefore, the terminal device can distinguish the first downlink control information and the second downlink control information.
  • the terminal device may determine that the received downlink control information is feedback control information, where the value of the first bit is not all 1, that is, at least one bit of the first bit.
  • the terminal device may determine that the downlink control information is the second downlink control information of the data scheduling.
  • the network device may send the first downlink control information to the terminal device, and feedback the receiving condition of the uplink data, without As in the prior art, the next time the terminal device needs to send uplink data, the feedback is delayed, which is beneficial to reducing the feedback delay of the network device to the uplink data, thereby improving system performance.
  • the first downlink control information is only used to indicate a positive response to the uplink data, where the first downlink control information further includes a hybrid automatic repeat request (HARQ process).
  • HARQ process hybrid automatic repeat request
  • the number indication bit, the HARQ process number indication bit is used to indicate the HARQ process corresponding to the uplink data.
  • the bits of the first downlink control information in addition to the existing padding bits, the first bit, and downlink control information used to distinguish the scheduled physical downlink shared channel
  • the format and the flag of the downlink control information format of the physical uplink shared channel and the HARQ process number indication bit are used, and the remaining bits are reserved bits, or all values are 1, or all values are 0.
  • the network device when the network device needs to feed back the ACK for the correct reception of the uplink data, the first DCI is sent, and the first DCI is only used to indicate that the uplink data is correctly received, that is, an acknowledgement of the network device.
  • the network device may retransmit the uplink data by using the NDI bit in the existing manner, that is, implicitly feedback the uplink data error receiving through the NDI bit, at this time in the DCI.
  • the first bit is not all ones.
  • the terminal device When the terminal device receives the DCI, if the first bit in the DCI is detected to be 1, the UE considers that the DCI indicates an ACK, that is, the uplink data of the HARQ process for which the UE is correctly received by the network device.
  • the first downlink control information may include, in addition to the first bit, a downlink control information format for scheduling the physical downlink shared channel and a downlink control information format for scheduling the physical uplink shared channel, and the HARQ.
  • the process number indicates the bit.
  • padding bits may or may not be included.
  • the padding bit is used to expand the number of bits included in the first downlink control information, so that the number of bits included in the first downlink control information reaches a target value.
  • the first downlink control information includes padding bits, the number of padding bits existing in the bits of the first downlink control information is greater than zero.
  • the first downlink control information does not include padding bits, the number of padding bits existing in the bits of the first downlink control information is 0.
  • the flag of the downlink control information format for scheduling the physical downlink shared channel and the downlink control information format for scheduling the physical uplink shared channel are 0, which generally indicates that the format of the downlink control information is a scheduling physical uplink shared channel.
  • the downlink control information format is used to distinguish between the downlink control information format for scheduling the physical downlink shared channel and the downlink control information format for scheduling the physical uplink shared channel, and the flag of the downlink control information format is 1, which generally indicates that the format of the downlink control information is a scheduled physical downlink shared channel.
  • the downlink control information format. In the first downlink control information, the flag of the downlink control information format for scheduling the physical downlink shared channel and the downlink control information format for scheduling the physical uplink shared channel are 0.
  • the remaining bits included in the first downlink control information may be reserved bits, and may all have a value of 1 or a value of 0, which is not limited in this embodiment of the present application.
  • the embodiment of the present application does not limit this.
  • the first downlink control information further includes a feedback indication bit, where the feedback indication bit is used to indicate that the network device acknowledges or negatively acknowledges the uplink data.
  • the uplink data includes uplink data corresponding to N HARQ processes, where the number of the feedback indication bits is N, and N bits of the feedback indication bit are used respectively. Instructing the network device to acknowledge or negatively acknowledge the uplink data corresponding to the N HARQ processes, and N is an integer greater than 1.
  • the foregoing first downlink control information may be correct for uplink data corresponding to one HARQ process.
  • the feedback is received, and the uplink data corresponding to the multiple HARQ processes may be fed back.
  • the number of the feedback indication bits included in the first downlink control information is N, and one bit corresponds to one HARQ process. .
  • the network device can feed back the uplink data corresponding to the multiple HARQ processes to the terminal device in a downlink control information, so as to reduce the feedback overhead of the network device and improve the feedback efficiency of the network device.
  • the remaining bits are reserved except for the existing padding bits, the first bit, the downlink control information format for distinguishing the physical downlink shared channel, and the flag of the downlink control information format for scheduling the physical uplink shared channel, and the feedback indication bit. Bit, or a value of 1, or a value of 0; or
  • the first bit a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel, the feedback indication bit, and the indication for retransmission
  • the bits of the scheduling information of the uplink data are the reserved bits, or the values are all 1, or the value is 0.
  • the bits of the scheduling information for indicating the retransmitted uplink data are included to indicate the following. At least one bit of information:
  • Resource allocation modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
  • the N is equal to two.
  • the number of the feedback indication bits is 2, and the 2 bits of the feedback indication bit are respectively used to indicate an acknowledgement or a negative response of the network device to the uplink data corresponding to the two HARQ processes.
  • the number of the feedback indication bits is 1, and the first downlink control information further includes a HARQ process number indication bit, where the HARQ process number indication bit is used to indicate the The HARQ process corresponding to the uplink data.
  • the first downlink control information when the first downlink control information is used to feed back the uplink data corresponding to the one HARQ process, the first downlink control information may further carry a HARQ process number indication bit, which is used to indicate the current feedback. The corresponding HARQ process.
  • the network device and the terminal device may determine, according to a predetermined rule, each feedback indication bit in the first control information. One-to-one correspondence between the uplink data of each HARQ process in the HARQ process, or the network device allocates the one-to-one correspondence to the terminal device.
  • the terminal device may directly determine, according to the one-to-one correspondence, a feedback indication bit corresponding to uplink data of each HARQ process in the multiple HARQ processes, and according to the feedback The indication bit determines whether the corresponding uplink data is correctly received by the network device.
  • the first bit a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel, the feedback indication bit, and the HARQ process number indication bit
  • the remaining bits are reserved bits, or all values are 1, or the value is 0; or
  • the first bit a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel, the feedback indication bit, and the indication for retransmission
  • the bits of the scheduling information of the uplink data and the HARQ process number indication bits, the remaining bits are reserved bits, or all of the values are 1, or the value is 0, wherein the scheduling of the uplink data for indicating retransmission is used.
  • the bits include bits for indicating at least one of the following:
  • Resource allocation modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
  • the foregoing first downlink control information may be used only for the network device to feed back whether the uplink data is correctly received, or may be used for the network device to feed back whether the uplink data is correctly received, and the network device feeds back the NACK.
  • the method is further configured to schedule the terminal device to retransmit the uplink data. Therefore, the first downlink control information may further include a bit for indicating scheduling information of the retransmitted uplink data, but the embodiment of the present application does not limit this.
  • the feedback indication bit is in a bit of the first downlink control information, except for a padding bit that exists, the first bit, a downlink control information format used to distinguish the scheduled physical downlink shared channel, and A flag of a downlink control information format of the physical uplink shared channel and a plurality of bits other than the hybrid automatic repeat request HARQ process number indication bit are scheduled.
  • the multiple bits are in the bits of the first downlink control information, except for the existing padding bits, the first bit, the downlink control information format used to distinguish the scheduled physical downlink shared channel, and the scheduling of the physical uplink shared channel.
  • the HARQ process number indication bit is used to indicate the HARQ process corresponding to the uplink data.
  • the value of the feedback indication bit is 1 for indicating a positive response to the uplink data
  • the value of the feedback indication bit is 0 for indicating a negative response to the uplink data.
  • the value of the feedback indication bit is 0 to indicate an acknowledgement to the uplink data
  • the value of the feedback indication bit is 1 to indicate a negative response to the uplink data.
  • the number of the feedback indication bits is greater than one, and is used to indicate an acknowledgement or a negative acknowledgement of the uplink data corresponding to the HARQ process indicated by the HARQ process number indication bit.
  • the values of the bits of the feedback indication bit are the same.
  • the number of bits of the first downlink control information is equal to the number of bits of the second downlink control information, and the first bit of the first downlink control information is The location is the same as the location of the first bit of the second downlink control information; and/or,
  • the first downlink control information has the same format as the second downlink control information.
  • the terminal device by setting the number of bits of the first downlink control information to be the same as the bit data of the DCI of the scheduling data, or the format is the same, the terminal device does not increase the blind detection of the first downlink control information. Degree, achieve compatibility with the DCI of the scheduled data.
  • the first bit of the second downlink control information is a bit used to indicate a modulation and coding mode; and/or the number of the first bit is 4.
  • the first bit of the second downlink control information is all bits or partial bits of the domain used to indicate resource allocation;
  • the first bit of the second downlink control information is all bits or partial bits of a field for indicating resource allocation and modulation and coding mode.
  • the resource of the physical uplink shared channel indicated by the first bit first state of the second downlink control information is a resource of less than 12 subcarriers.
  • the number of the first bits is 9 or 11; or
  • the number of the first bits is greater than or,
  • the number of the first bits is among them, Indicates the number of physical resource blocks included in the uplink system bandwidth.
  • the downlink control information format for scheduling the physical downlink shared channel and the downlink control information for scheduling the physical uplink shared channel are used in the bit of the first downlink control information.
  • the format flag has a value of 0.
  • the downlink control information format used to distinguish the physical downlink shared channel and the downlink control information format of the physical uplink shared channel are used to distinguish the control information format. 0B and the flag of control information format 6-1B.
  • the network device may send the first downlink control information to the terminal device, and feed back the uplink data.
  • the receiving situation does not need to wait until the next time the terminal device needs to send uplink data as in the prior art, which is beneficial to reduce the feedback delay of the network device to the uplink data, thereby improving system performance.
  • a network device in a third aspect, has a function of implementing network device behavior in the foregoing method aspect, and includes a component corresponding to the step or function described in the foregoing method aspect.
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the network device described above includes one or more processors and transceiver units.
  • the one or more processors are configured to support the network device to perform corresponding functions in the above methods. For example, generate a DCI.
  • the transceiver unit is configured to support the network device to communicate with other devices to implement a receiving/transmitting function. For example, the DCI generated by the processor is transmitted.
  • the base station may further include one or more memories, where the memory is coupled to the processor, which stores necessary program instructions and data of the base station.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the network device may be a base station or a TRP
  • the transceiver unit may be a transceiver or a transceiver circuit.
  • the network device can also be a communication chip.
  • the transceiver unit may be an input/output circuit or interface of a communication chip.
  • the above network device includes a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the network device performs the first aspect, any one of the first aspects The method of completing the network device in the mode.
  • a terminal device is provided.
  • the terminal device provided by the present application has a function for implementing the behavior of the terminal device in the foregoing method aspect, and includes a component corresponding to the step or function described in the foregoing method aspect.
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the above terminal device includes one or more processors and transceiver units.
  • the transceiver unit is configured to support the terminal device to communicate with other devices to implement a receiving/transmitting function. For example, receive DCI.
  • the one or more processors are configured to support the terminal device to perform a corresponding function in the above method. For example, according to The DCI determines the feedback of the uplink data.
  • the terminal device may further include one or more memories, and the memory is configured to be coupled to the processor, which stores necessary program instructions and data of the base station.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the terminal device may be a UE or the like, and the transceiver unit may be a transceiver or a transceiver circuit.
  • the terminal device can also be a communication chip.
  • the transceiver unit may be an input/output circuit or interface of a communication chip.
  • the above terminal device includes a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the terminal device performs any of the possible implementations of the first aspect of the first aspect The method in which the terminal device is completed.
  • a system comprising the above terminal device and a network device.
  • a computer program product comprising: a computer program (which may also be referred to as a code, or an instruction), when the computer program is executed, causing the computer to perform the first aspect of the first aspect described above Any of the possible implementations.
  • a computer readable medium storing a computer program (which may also be referred to as a code, or an instruction), when executed on a computer, causes the computer to perform the first aspect, first Any of the possible implementations of the aspect.
  • the present application provides a chip system including a processor for supporting a network device to implement the functions involved in the above aspects, such as, for example, receiving or processing data and/or processing involved in the above method. information.
  • the chip system further includes a memory for storing necessary program instructions and data of the network device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a chip system including a processor for a terminal device to implement the functions involved in the above aspects, such as, for example, transmitting or processing data and/or information involved in the above method.
  • the chip system further comprises a memory for storing necessary program instructions and data of the terminal device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • FIG. 1 is a schematic diagram of a system scenario applicable to an embodiment of the present application.
  • FIG. 2 is a schematic flow chart of a method of data transmission according to another embodiment of the present application.
  • FIG. 3 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a network device in accordance with one embodiment of the present application.
  • FIG. 5 is a schematic block diagram of an apparatus in accordance with one embodiment of the present application.
  • the embodiments of the present application are applicable to various communication systems, and therefore, the following description is not limited to a specific communication system.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • Code division multiple access (WCDMA) system general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division double Time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, and future fifth generation (5th generation, 5G) ) System or new radio (NR), etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD LTE frequency division duplex
  • TDD LTE time division double Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the embodiment of the present application is applicable, as long as one device (for example, a terminal device) transmits uplink data, another device (for example, a network device) needs to receive the uplink data, and the corresponding method is used.
  • the uplink data is correctly received for feedback, and the embodiment of the present application is not limited to the communication system described above.
  • FIG. 1 shows a schematic block diagram of a wireless communication system 100 suitable for use with embodiments of the present application.
  • the wireless communication system 100 can include a network device 110 and at least one terminal device.
  • FIG. 1 shows a case where the at least one terminal device is three devices, which are the case of the terminal devices 120, 130, and 140, respectively. The example is not limited to this.
  • the network device 110 in the embodiment of the present application may receive uplink data sent by the terminal device, where the network device may be global system of mobile communication (GSM) or code division multiple access (CDMA).
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • the base transceiver station (BTS) may also be a base station (nodeB, NB) in wideband code division multiple access (WCDMA), or may be long term evolution (LTE).
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • the base transceiver station (BTS) may also be a base station (nodeB, NB) in wideband code division multiple access (WCDMA), or may be long term evolution (LTE).
  • NB base station
  • WCDMA wideband code division multiple access
  • LTE long term evolution
  • Evolved base station eNB/eNodeB
  • a relay station or access point or an in-vehicle device, a wearable device, and a network-side device in a future 5G network or a public land mobile communication network in the future (public land)
  • a network device or the like in a mobile network for example, a transmission point (TRP or TP) in an NR system, a base station (gNB) in an NR system, or one or a group of base stations in a 5G system (including a plurality of antenna panels)
  • TRP or TP transmission point
  • gNB base station
  • the antenna panel and the like are not particularly limited in this embodiment of the present application.
  • the terminal device in the embodiment of the present application may send uplink data to the network device.
  • the terminal device may be a device that performs a machine type communication (MTC) service, and the terminal device may also be referred to as a user device.
  • MTC machine type communication
  • UE for example, Bandwidth-reduced Low-complexity UE (BL UE), Coverage Enhancement UE (CE UE);
  • the terminal device may also be referred to as an access terminal, Subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • the access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication.
  • the terminal device 120 is a user device
  • the terminal device 130 is an in-vehicle device
  • the terminal device 140 is a printer
  • the network device 110 in the embodiment of the present application may also be a terminal device as described above.
  • the communication between the network device and the terminal device may be evolved into communication between the terminal devices.
  • It may also be referred to as machine to machine (M2M), or inter-device communication (D2D).
  • M2M machine to machine
  • D2D inter-device communication
  • the network device needs to feed back whether the uplink data is correctly received, so that in case of feedback error reception, the terminal device needs to retransmit the data, and if the feedback is correctly received, No terminal device is required to retransmit data.
  • the network device can indicate whether the uplink data scheduled by the DCI is newly transmitted data or the data transmitted last time by the process through the NDI of 1 bit in the DCI.
  • the DCI is used to schedule data, that is, the network device sends the DCI only when there is data scheduling, and the network device can be scheduled by the network device if the network device incorrectly receives the uplink data.
  • the network device correctly receives the uplink data sent by the terminal device
  • the network device does not have a new uplink data scheduling
  • the network device does not send a DCI scheduling new transmission, thereby feeding back the correct reception of the uplink data
  • the network device sends the DCI that schedules the new uplink data to implicitly receive the correct reception of the uplink data, so that the terminal device may not be able to know in time whether the uplink data is correctly received by the network device. That is, there is a large delay in the feedback of the network device to the uplink data.
  • the embodiment of the present application subtly proposes a data transmission method, which can provide timely feedback of uplink data by sending control information (for example, DCI), and can send control information without waiting for data scheduling, thereby reducing network equipment's uplink data. Feedback delay.
  • control information for example, DCI
  • the method shown in FIG. 2 includes:
  • the terminal device sends uplink data.
  • the network device receives the uplink data.
  • the network device first generates downlink control information for uplink data scheduling, for example, second downlink control information, where the second downlink control information is used by the network device to schedule a physical uplink shared channel. Then, the network device sends the second downlink control information to the terminal device, and after acquiring the second downlink control information, the terminal device sends the uplink data to the network device according to the second downlink control information.
  • second downlink control information for uplink data scheduling
  • the network device sends first downlink control information to the terminal device.
  • the first bit of the first downlink control information has a value of 1, and the number of the first bit is greater than or equal to 1.
  • the first bit is used to indicate that the first downlink control information is used. Instructing the network device to acknowledge or negatively acknowledge the uplink data.
  • the terminal device receives the first downlink control information.
  • the terminal device may determine, according to the first downlink control information, whether the uplink data is correctly received by the network device.
  • the terminal device sends uplink data to the network device, and the network device receives the uplink data, and sends, to the terminal device, first downlink control information with a first bit value of 1.
  • the terminal device receives the downlink control information sent by the network device, and determines that the downlink control information is the first downlink control information according to the first bit of the downlink control information, and further determines the first downlink control according to the first downlink control.
  • the information determines whether the network device correctly receives the uplink data.
  • the network device may send the first downlink control information by using a physical downlink channel, where the physical downlink channel may be a PDCCH or an MPDCCH, and the embodiment of the present application is not limited thereto.
  • the first downlink control information may also be referred to as downlink control information for feedback, where the first downlink control information indicates that the first downlink control is performed by using a first bit value of 1.
  • the information is used to indicate a positive response or a negative response of the network device to the uplink data.
  • the second downlink control information is control information of the data scheduling, and the value of the at least one bit of the first bit in the second downlink control information is 0.
  • the downlink control information that is sent by the network device to the terminal device may be divided into the first downlink control information and the second downlink control information.
  • the first downlink control information is used by the network device to feed back whether the uplink data sent by the terminal device is correctly received.
  • the first downlink control information may not be used by the network device to schedule a physical uplink shared channel.
  • the first downlink control information may also be used for the physical uplink shared channel that the network device schedules retransmission.
  • the second downlink control information is used by the network device to schedule a physical uplink shared channel.
  • the first downlink control information may be sent at any time after the network device determines whether the uplink data is correctly received.
  • the second downlink control information can only be sent when the network device schedules the terminal device for data transmission.
  • the value of the first bit in the first control information is set to 1 by using the first bit in the second downlink control information, and the value of the first bit is not 1. Therefore, the terminal device can distinguish the first downlink control information and the second downlink control information.
  • the terminal device may determine that the received downlink control information is the first downlink control information for feedback, where the value of the first bit is not all one, that is, the first When the value of at least one bit in the bit is 0, the terminal device may determine that the downlink control information is the second downlink control information used for data scheduling.
  • the network device may send the first downlink control information to the terminal device, and feedback the receiving condition of the uplink data, without As in the prior art, the next time the terminal device needs to send uplink data, the feedback is delayed, which is beneficial to reducing the feedback delay of the network device to the uplink data, thereby improving system performance.
  • the format of the first downlink control information may be the same as the format of the second downlink control information, for example, 6-0B.
  • the number of bits of the first downlink control information is equal to the number of bits of the second DCI, and the location of the first bit of the first downlink control information and the DCI of the scheduling data. The position of the first bit is the same.
  • the terminal device by setting the number of bits of the first downlink control information to be the same as the bit data of the DCI of the scheduling data, or the format is the same, the terminal device does not increase the blind detection of the first downlink control information. Degree, achieve compatibility with the DCI of the scheduled data.
  • the terminal device needs to distinguish whether the acquired control information is feedback control information or data scheduling control information.
  • the terminal device may determine that the received downlink control information is the first downlink control information for feedback, where the value of the first bit is not all one, that is, the first When the value of at least one bit in the bit is 0, the terminal device may determine that the downlink control information is the second downlink control information used for data scheduling.
  • the format of the downlink control information of the scheduling data that is, the format of the second downlink control information DCI in the embodiment of the present application is first introduced in conjunction with Table 1 to Table 3. It should be understood that, in this document, DCI is used as an abbreviation of downlink control information, but the downlink control information of the present application is not limited thereto.
  • the information included in the second DCI is as shown in Tables 1 to 3.
  • the format of the second DCI of Table 1 is 6-0B.
  • the format of the second DCI of Table 2 and Table 3 may be 6-0B, or may not be 6-0B.
  • Table 1 shows the DCI format 6-0B a second DCI containing domain and the number of bits contained in each domain.
  • the field included in the DCI format 6-0B includes the distinguishing flag bits of 6-0B and 6-1B, and the field for indicating resource block allocation, modulation and coding mode MCS, repetition number, HARQ process number, NDI, and DCI subframe repetition number. .
  • Table 2 shows the fields contained in another second DCI and the number of bits contained in each field.
  • the domain included in the DCI includes a DCI format for scheduling the PDSCH and a flag for the DCI format for scheduling the PUSCH, and a field for indicating the MCS and resource allocation, the number of repetitions, the HARQ process number, the NDI, and the number of DCI subframe repetitions.
  • M is a positive integer.
  • Optional M is greater than Optional, or
  • the DCI includes a domain that includes a DCI format for scheduling a PDSCH and a flag for a DCI format for scheduling a PUSCH, a resource allocation for a narrowband indication and a narrowband, an MCS, a repetition number, a HARQ process number, an NDI, and a DCI subframe repetition number.
  • N is a positive integer.
  • N is greater than
  • the granularity of resources allocated by resource block allocation in Table 1 is PRB, where, in Table 1, The bits are used to indicate the assigned narrowband and 3 bits are used to indicate the physical resource blocks allocated in the narrowband.
  • the MCS and resources are assigned as one domain.
  • the value of the MCS and the resource allocation bit indicates the MCS used by the PUSCH and the allocated resource.
  • the value of the MCS and the allocated bits of the resource may be jointly encoded by the MCS used by the PUSCH and the allocated resources.
  • the resources allocated by the MCS and the resource allocation bits for the PUSCH may be resources of S subcarriers, and S is a positive integer of ⁇ 12.
  • the MCS and resource allocated bits may indicate resources allocated for the PUSCH in units of PRBs, and may also indicate resources allocated for the PUSCH in units of one or more subcarriers.
  • the resources allocated by the MCS and the resource allocation bits for the PUSCH may be resources allocated within the entire system bandwidth; or may be included in the MCS and resource allocation bits.
  • the bits are used for the narrow band of indication, and the remaining bits indicate the resources allocated within the narrow band.
  • the number of bits in the resource allocation field is N, where the number of Ns may be pre-configured by the system or calculated.
  • the embodiment of the present application does not limit the value of N.
  • N may be and many more.
  • the resource allocated for the PUSCH indicated by the bit of the resource allocation in the DCI may be a resource of S subcarriers, and S is a positive integer of ⁇ 12.
  • the resource allocation bits in the DCI may indicate resources allocated for the PUSCH in units of PRBs, and may also indicate resources allocated for the PUSCH in units of one or more subcarriers.
  • the resource allocated bits are bits that only support the allocation of resources for the PUSCH in units of one or more subcarriers.
  • the resource allocated for the PUSCH indicated by the bit of the resource allocation may be a resource allocated within the entire system bandwidth, or may be included in the bit allocated by the resource.
  • the bits are used for the narrow band of indication, and the remaining bits indicate the resources allocated within the narrow band. .
  • the values of the bits have invalid values.
  • a value of a bit is an invalid value.
  • the value of the bit is not the value.
  • the value of the bit is the binary value of the bit, or the value of the bit.
  • the 4-digit representation of the MCS is the index I MCS of the MCS .
  • I MCS >10 is an invalid value for the BL/CE UE of CE mode B.
  • the value of the bit allocated by the resource is all "1", which is a meaningless invalid value state.
  • the embodiment of the present application proposes that the bit is used as the first bit, so that the value of the first bit of the first DCI is all one, and the value of the first bit in the second DCI is all the value of the invalid value. .
  • the terminal device determines that the acquired DCI is the first DCI by using all the first bits, and the first bit is not all 1, and then determines that the acquired DCI is the second DCI.
  • the first bit may be all bits or partial bits of the domain of the DCI.
  • the first bit of the second downlink control information may be part or all of the bits used to indicate the modulation and coding mode.
  • the second downlink control information is used to indicate the 4 bits or partial bits of the MCS as the first bit. As long as the value of the first bit is 1, the value of the 4 bits of the MCS may be greater than 10.
  • the value of the 4 bits of the MCS is 1011, 1100, 1101, 1110, and 1111
  • the value is invalid, that is, in the second downlink control information of the data scheduling
  • the 4 bits of the MCS are taken.
  • the value will not equal the above value. Therefore, in the embodiment of the present application, when the first bit is taken as 1, the value of the four bits can be ensured to be greater than 10.
  • the first bit can be used to indicate that the downlink control information is used to indicate the positive response to the uplink data. Or negating the first downlink control information received by the response.
  • the first bit includes 4 bits, in this case, in the first DCI, the first bit takes a value of 1111; in the second DCI, the second DCI The first bit is used to indicate the MCS.
  • the first bit may include a part of the bits in the second DCI for indicating the MCS, for example, the first bit includes the first two bits in the second DCI for indicating the MCS (also It can be referred to as two bits of the upper bit, that is, in the case where the first two bits are 1, the value of 11 bits of the bit for indicating the MCS is 11xx, where x can take 0 or 1 .
  • the first bit may comprise three bits, for example comprising the first two of the four bits of the second DCI for indicating the bits of the MCS, and any one of the remaining bits.
  • the first bit includes a first bit and a third and fourth bit of the second DCI for indicating the MCS.
  • the first bit of the second downlink control information may be all bits or partial bits of a field for indicating resource allocation and modulation and coding mode.
  • the first bit of the second downlink control information is all bits or partial bits of the domain used to indicate resource allocation.
  • the number of the first bits is 9 or 11; or, the number of the first bits is greater than Or, the number of the first bits is
  • the first downlink control information is only used to indicate a positive response to the uplink data, and the first downlink control information further includes a hybrid automatic repeat request (HARQ process).
  • HARQ process hybrid automatic repeat request
  • the number indication bit, the HARQ process number indication bit is used to indicate a HARQ process corresponding to the uplink data.
  • the first bit in the bits of the first downlink control information, except for the existing padding bits, the first bit, a downlink control information format used to distinguish the scheduled physical downlink shared channel, and a downlink for scheduling the physical uplink shared channel.
  • the remaining bits are reserved bits, or all values are 1, or the values are all 0.
  • the first DCI is used to indicate that the uplink data is correctly received, that is, an acknowledgement of the network device.
  • the network device may retransmit the uplink data by using the NDI bit in the existing manner, that is, implicitly feedback the uplink data error receiving through the NDI bit, at this time in the DCI.
  • the first bit is not all ones.
  • the first downlink control information may include, in addition to the first bit, a downlink control information format for scheduling the physical downlink shared channel and a downlink control information format for scheduling the physical uplink shared channel, and the HARQ.
  • the process number indicates the bit.
  • padding bits may or may not be included.
  • the padding bit is used to expand the number of bits included in the first downlink control information, so that the number of bits included in the first downlink control information reaches a target value.
  • the first downlink control information includes padding bits, the number of padding bits existing in the bits of the first downlink control information is greater than zero.
  • the first downlink control information does not include padding bits, the number of padding bits existing in the bits of the first downlink control information is 0.
  • the format of the downlink control information format for scheduling the physical downlink shared channel and the downlink control information format for scheduling the physical uplink shared channel are 0, which generally indicates that the format of the downlink control information is scheduling physical uplink sharing.
  • the downlink control information format of the channel; the downlink control information format used to distinguish the physical downlink shared channel and the downlink control information format of the physical uplink shared channel are set to 1, which generally indicates that the format of the downlink control information is the scheduling physical downlink.
  • the downlink control information format of the shared channel In the first downlink control information, a flag for distinguishing between a downlink control information format for scheduling the physical downlink shared channel and a downlink control information format for scheduling the physical uplink shared channel is 0.
  • the remaining bits included in the first downlink control information may be reserved bits, and may all have a value of 1 or a value of 0, which is not limited in this embodiment of the present application.
  • the embodiment of the present application does not limit this.
  • Table 4 - Table 6 is a possible implementation manner of the first DCI and the second DCI in the embodiment of the present application.
  • the first DCI is used to indicate a positive response of the network device to the uplink data.
  • the domain included in the first DCI may be the same as the domain included in the second DCI, or may be different from the domain included in the second DCI or have a different name.
  • the number of bits of the second DCI is the same as the number of bits of the first DCI.
  • the bits of the second DCI correspond to the bits of the first DCI.
  • Table 4 - Table 6 shows the values of the bits of each field in the second DCI in the first DCI.
  • the distinguishing flag bit of the DCI formats 6-0B and 6-1B is 0, indicating that the format of the DCI is 6-0B. Or distinguish between the DCI format for scheduling the PDSCH and the flag for the DCI format for scheduling the PUSCH to be 0.
  • the case where the first bit is the MCS field is shown in Table 4, and the case where the first bit is the all bits or partial bits of the MCS and the resource allocation field is shown in Table 5, and the first bit is shown as a resource in Table 6.
  • the first bit all ones.
  • the field for indicating the HARQ process number includes one HARQ process number indication bit.
  • the terminal device may first determine that the distinguishing flag bits of 6-0B and 6-1B in the DCI are 0 or distinguish the DCI format and the scheduling PUSCH of the scheduling PDSCH.
  • the flag bit of the DCI format is 0, and according to the first bit being 1, the DCI is determined to be the first DCI, that is, the DCI used for feedback, because the first DCI is sent by the network device when the uplink data is correctly received.
  • the terminal device can directly determine, according to the first DCI, that the network device has correctly received the uplink data, and does not need to indicate by using the feedback indication bit.
  • the remaining bits in one of the embodiments DCI take a value of '1'.
  • Another embodiment is that the remaining bits are set to all '0'.
  • the embodiments of the present application are not limited thereto.
  • the first downlink control information further includes a feedback indication bit, where the feedback indication bit is used to indicate that the network device acknowledges or negatively responds to the uplink data.
  • the first downlink control information may not carry a feedback indication bit, or feedback exists in the first downlink control information. Indication bit, However, the feedback indication bits have a value of 0 or both.
  • the first downlink control information needs to include a feedback indication bit, where the first downlink control information is used to indicate a positive response or a negative response to the uplink data, where the feedback indication bit is specifically used to indicate a location of the network device.
  • the feedback of the uplink data is a positive acknowledgement ACK or a negative acknowledgement NACK.
  • the uplink data includes uplink data corresponding to N HARQ processes, the number of the feedback indication bits is N, and the N bits of the feedback indication bit are used to indicate The network device acknowledges or negatively acknowledges the uplink data corresponding to the N HARQ processes, and N is an integer greater than 1.
  • the first downlink control information may be used for feedback whether the uplink data corresponding to one HARQ process is correctly received, or may be fed back for whether the uplink data corresponding to multiple HARQ processes is correctly received.
  • the number of the feedback indication bits included in the first downlink control information is N, and one bit corresponds to one HARQ process. .
  • the network device can feed back the uplink data corresponding to the multiple HARQ processes to the terminal device in a downlink control information, so as to reduce the feedback overhead of the network device and improve the feedback efficiency of the network device.
  • N 2.
  • CE mode B there are at most two HARQ processes corresponding to the uplink data.
  • the number of the feedback indication bits is 2, and the 2 bits of the feedback indication bit are respectively used to indicate an acknowledgement or a negative response of the network device to the uplink data corresponding to the 2 HARQ processes.
  • the remaining bits are included in addition to the padding bits, the first bit, the downlink control information format for scheduling the physical downlink shared channel, and the flag of the downlink control information format for scheduling the physical uplink shared channel, and the feedback indication bit. Is a reserved bit, or a value of 1, or a value of 0; or
  • the remaining bits are reserved bits, or all of the values are 1, or all values are 0, wherein the bits for indicating the scheduling information of the retransmitted uplink data include A bit indicating at least one of the following information:
  • Resource allocation modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
  • the number of the feedback indication bits is 1, the first downlink control information further includes a HARQ process number indication bit, and the HARQ process number indication bit is used to indicate that the uplink data corresponds to The HARQ process.
  • the first downlink control information when the first downlink control information is used to feed back the uplink data corresponding to the one HARQ process, the first downlink control information may further carry a HARQ process number indication bit, which is used to indicate the current feedback. The corresponding HARQ process.
  • the network device and the terminal device may determine, according to a predetermined rule, each feedback indication bit in the first control information and the The one-to-one correspondence between the uplink data of each of the plurality of HARQ processes, or the one-to-one correspondence between the network devices and the terminal device.
  • the terminal device may directly determine the feedback indication bit corresponding to the uplink data of each HARQ process in the multiple HARQ processes according to the one-to-one correspondence, and according to the The feedback indication bit determines the corresponding number of uplinks According to whether it is correctly received by the network device.
  • the remaining bits are reserved bits, or all values are 1, or the value is 0; or
  • the first bit a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel
  • the feedback indication bit for indicating
  • the bits of the scheduling information of the transmitted uplink data and the HARQ process number indication bits, the remaining bits are reserved bits, or all values are 1, or all values are 0, wherein the information is used to indicate retransmission.
  • the bits of the scheduling information of the uplink data include bits for indicating at least one of the following:
  • Resource allocation modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
  • the foregoing first downlink control information may be used only for the network device to feed back whether the uplink data is correctly received, or may be used for the network device to feed back whether the uplink data is correctly received, and the network device feeds back the NACK.
  • the method is further configured to schedule the terminal device to retransmit the uplink data. Therefore, the first downlink control information may further include a bit for indicating scheduling information of the retransmitted uplink data, but the embodiment of the present application does not limit this.
  • the feedback indication bit is in the bit of the first downlink control information, except for the existing padding bit, the first bit, and downlink control for distinguishing the scheduled physical downlink shared channel.
  • the multiple bits are in the bits of the first downlink control information, except for the existing padding bits, the first bit, and the downlink control information format and scheduling used to distinguish the scheduled physical downlink shared channel.
  • the HARQ process number indication bit is used to indicate a HARQ process corresponding to the uplink data.
  • the value of the feedback indication bit is 1 for indicating a positive response to the uplink data
  • the value of the feedback indication bit is 0 for indicating a negative response to the uplink data.
  • the value of the feedback indication bit is 0 to indicate a positive response to the uplink data
  • the value of the feedback indication bit is 1 to indicate a negative response to the uplink data.
  • the number of the feedback indication bits is greater than one, and is used to indicate an acknowledgement or a negative response to the uplink data corresponding to the HARQ process indicated by the HARQ process number indication bit.
  • the values of the respective bits of the feedback indication bit are the same.
  • the bit values of the first DCI for indicating ACK or NACK are described in conjunction with Tables 7 to 10, wherein the feedback is included in Tables 7 to 10. Indicates a bit, and the feedback indication bit is 1 bit, that is, a case corresponding to uplink data feedback for one HARQ process.
  • Table 7 - Table 10 is a possible implementation manner of the first DCI and the second DCI in the embodiment of the present application.
  • the first DCI is used to indicate a positive or negative response of the network device to the uplink data.
  • the domain included in the first DCI may be the same as the domain included in the second DCI, or may be different from the domain included in the second DCI or have a different name.
  • the number of bits of the second DCI is the same as the number of bits of the first DCI.
  • the bits of the second DCI correspond to the bits of the first DCI.
  • Table 7 - Table 10 shows the values of the bits of each field in the second DCI in the first DCI.
  • the distinguishing flag bit of the DCI formats 6-0B and 6-1B is 0, indicating that the format of the DCI is 6-0B. Or distinguish between the DCI format for scheduling the PDSCH and the flag for the DCI format for scheduling the PUSCH to be 0.
  • Table 7 and Table 8 show the case where the first bit is the MCS field, and Table 9 shows the case where the first bit is the all bits or partial bits of the MCS and the resource allocation field, and the first table is shown in Table 10.
  • the bit is the case where all bits or partial bits of the domain are allocated to the resource. And the first bit, all ones.
  • the field for indicating the HARQ process number includes one HARQ process number indication bit.
  • Table 7 to Table 10 further include a bit feedback indication bit, and the feedback indication bit may be a padding bit existing, a first bit, a downlink control information format used to distinguish the scheduled physical downlink shared channel, and a scheduling physical uplink.
  • the feedback indication bit in Table 7 is the upper one bit in the resource block allocation field, and one bit in the NDI field in Table 8 to Table 10.
  • the remaining bits are reserved bits, or all values are 1, or all values are 0.
  • the remaining bits in the DCI take a value of '1'.
  • the remaining bits in the DCI take a value of '0'.
  • the first DCI in the embodiment of the present application may be used to schedule the terminal device to retransmit the uplink data, when the feedback bit of the first DCI is fed back to the NACK. Therefore, the first downlink control information may further include a bit for indicating scheduling information of the retransmitted uplink data, but the embodiment of the present application does not limit this.
  • the padding bits existing in the first DCI, the first bit, the downlink control information format used to distinguish the scheduled physical downlink shared channel, and the downlink control information for scheduling the physical uplink shared channel The flag of the format, the feedback indication bit, the bit indicating the HARQ process number, and the bit of the scheduling information for indicating the retransmitted uplink data, the remaining bits are reserved bits, or the values are all 1, or values All are 0, wherein the bit of the scheduling information for indicating the retransmitted uplink data includes a bit for indicating at least one of the following information:
  • Resource allocation modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
  • the scheduling retransmission may be further indicated, and the DCI that schedules retransmission is avoided from being sent again, which can save signaling overhead.
  • the terminal device may first determine the distinguishing flag bits of 6-0B and 6-1B in the DCI or distinguish the DCI format of the scheduled PDSCH and the DCI of the scheduled PUSCH.
  • the flag of the format is 0, and according to the first bit is 1, the DCI is determined to be the first DCI, that is, the DCI used for feedback, and finally, the feedback of the network device is determined according to the 1-bit indication corresponding to the feedback indication bit. Is ACK or NACK.
  • the bit values of the first DCI for indicating ACK or NACK are described in conjunction with Tables 11 to 13, wherein the feedback is included in Tables 11 to 13. Indicates a bit, and the feedback indication bit is 2 bits, that is, a case corresponding to feedback of uplink data of 2 HARQ processes.
  • Table 11 - Table 13 are a possible implementation manner of the first DCI and the second DCI in the embodiment of the present application.
  • the first DCI Used to indicate a positive or negative response from the network device to the upstream data.
  • the domain included in the first DCI may be the same as the domain included in the second DCI, or may be different from the domain included in the second DCI or have a different name.
  • the number of bits of the second DCI is the same as the number of bits of the first DCI.
  • the bits of the second DCI correspond to the bits of the first DCI.
  • Table 11 - Table 13 shows the values of the bits of each field in the second DCI in the first DCI.
  • the distinguishing flag bit of the DCI formats 6-0B and 6-1B is 0, indicating that the format of the DCI is 6-0B. Or distinguish between the DCI format for scheduling the PDSCH and the flag for the DCI format for scheduling the PUSCH to be 0.
  • the case where the first bit is the MCS field is shown in Table 11, and the case where the first bit is the all bits or partial bits of the MCS and the resource allocation field is shown in Table 12, and the first bit is shown as a resource in Table 13.
  • the feedback indication bit includes 2 bits, corresponding to two HARQ process numbers, and the 2 bits of the feedback indication bit are respectively used to indicate the uplink data corresponding to the 2 HARQ processes by the network device. A positive response or a negative response.
  • the feedback indication bits in Tables 11 to 13 may be a flag other than the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a downlink control information format for scheduling the physical uplink shared channel. Any two of the bits outside the bit.
  • the feedback indication bits in Table 11 are the upper and the next highest bits in the resource block allocation domain, where the upper 1 bit indicates the ACK feedback or the NACK feedback of the uplink data of the HARQ process #0, and the 1st bit of the next highest bit indicates the HARQ process #1. ACK feedback or NACK feedback of the uplink data.
  • the feedback indication bit is the high order and the next highest bit in the repetition number indication field, wherein the upper 1 bit indicates the ACK feedback or the NACK feedback of the uplink data of the HARQ process #0, and the 1st bit of the next highest bit indicates the HARQ process #1.
  • ACK feedback or NACK feedback of uplink data indicates the HARQ process #1.
  • the feedback indication bit is the upper and the next highest bit in the DCI subframe repetition number field, wherein the upper 1 bit indicates the ACK feedback or the NACK feedback of the uplink data of the HARQ process #0, and the 1st bit of the next highest bit indicates the HARQ process# 1 ACK feedback or NACK feedback of uplink data.
  • the remaining bits are reserved bits, or all values are 1, or all values are 0.
  • the remaining bits in the DCI take a value of '1'.
  • the remaining bits in the DCI take a value of '0'.
  • the first DCI in the embodiment of the present application may be used to schedule the terminal device to retransmit the uplink data, when the feedback bit of the first DCI is fed back to the NACK. Therefore, the first downlink control information may further include a bit for indicating scheduling information of the retransmitted uplink data, but the embodiment of the present application does not limit this.
  • the padding bits existing in the first DCI, the first bit, the downlink control information format used to distinguish the scheduled physical downlink shared channel, and the downlink control information for scheduling the physical uplink shared channel The flag of the format, the feedback indication bit, and the bit of the scheduling information for indicating the retransmitted uplink data, the remaining bits are reserved bits, or all values are 1, or the value is 0, wherein the The bits of the scheduling information for indicating the retransmitted uplink data include bits for indicating at least one of the following:
  • Resource allocation modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
  • the scheduling retransmission may be further indicated, and the DCI that schedules retransmission is avoided from being sent again, which can save signaling overhead.
  • the terminal device may first determine the The distinguishing flag bits of 6-0B and 6-1B in the DCI or the DCI format of the scheduling PDSCH and the DCI format of the scheduling PUSCH are 0, and then the DCI is determined to be the first DCI according to the first bit being 1. That is, the DCI used for the feedback, and finally, according to the 2-bit indication corresponding to the feedback indication bit, it is determined that the feedback of the uplink data corresponding to the two HARQs by the network device is ACK or NACK.
  • the content of the bit value when the first DCI is used to indicate ACK or NACK is described below with reference to Tables 14 to 16 for the contents of the second DCI shown in Tables 1 to 3 above.
  • the reference indication bits are included in the table 14 to the table, and the feedback indication bits are multiple bits, and the values of the multiple bits are the same, and the uplink data of one HARQ process is fed back.
  • Table 14 - Table 16 is a possible implementation manner of the first DCI and the second DCI in the embodiment of the present application.
  • the first DCI is used to indicate a positive or negative response of the network device to the uplink data.
  • the domain included in the first DCI may be the same as the domain included in the second DCI, or may be different from the domain included in the second DCI or have a different name.
  • the number of bits of the second DCI is the same as the number of bits of the first DCI.
  • the bits of the second DCI correspond to the bits of the first DCI.
  • Table 14 - Table 16 shows the values of the bits of each field in the second DCI in the first DCI.
  • the distinguishing flag bit of the DCI formats 6-0B and 6-1B is 0, indicating that the format of the DCI is 6-0B. Or distinguish between the DCI format for scheduling the PDSCH and the flag for the DCI format for scheduling the PUSCH to be 0.
  • the case where the first bit is the MCS field is shown in Table 14, and the case where the first bit is the all bits or partial bits of the MCS and the resource allocation field is shown in Table 15, and the first bit is shown as a resource in Table 16.
  • the first bit all ones.
  • the field for indicating the HARQ process number includes one HARQ process number indication bit.
  • the feedback indication bit is a flag bit in addition to the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a downlink control information format for scheduling the physical uplink shared channel, and
  • the hybrid automatic repeat request requests all bits except the HARQ process number indication bit.
  • the value of the feedback indication bit is 1 for indicating a positive response to the uplink data
  • the value of the feedback indication bit is 0 for indicating a negative response to the uplink data.
  • the value of the feedback indication bit is 0 to indicate a positive response to the uplink data
  • the value of the feedback indication bit is 1 to indicate a negative response to the uplink data.
  • the number of the feedback indication bits is greater than one, and is used to indicate an acknowledgement or a negative response to the uplink data corresponding to the HARQ process indicated by the HARQ process number indication bit.
  • the values of the respective bits of the feedback indication bit are the same.
  • the terminal device may first determine the distinguishing flag bits of 6-0B and 6-1B in the DCI or distinguish the DCI format of the scheduled PDSCH and the DCI of the scheduled PUSCH.
  • the flag of the format is 0, and according to the first bit is 1, the DCI is determined to be the first DCI, that is, the DCI used for feedback, and finally, according to the indication of the feedback indication bit, it is determined that the network device feedback is ACK or NACK.
  • FIG. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • the terminal device can be adapted for use in the system shown in FIG.
  • FIG. 3 shows only the main components of the terminal device.
  • the terminal device 10 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used for processing the communication protocol and the communication data, and controlling the entire terminal device, executing the software program, and processing the data of the software program, for example, for supporting the terminal device to perform the actions described in the foregoing method embodiments, such as And determining, according to the received downlink control information DCI, a feedback state of the uplink data.
  • Memory is primarily used to store software programs and data.
  • the control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals.
  • the control circuit together with the antenna can also be called a transceiver, and is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 3 shows only one memory and processor for ease of illustration. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, and the like.
  • the processor may include a baseband processor and a central processing unit, and the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control and execute the entire terminal device.
  • the processor in FIG. 3 can integrate the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit can also be independent processors and interconnected by technologies such as a bus.
  • the terminal device may include a plurality of baseband processors to accommodate different network standards, and the terminal device may include a plurality of central processors to enhance its processing capabilities, and various components of the terminal devices may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the functions of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • the antenna and control circuitry having the transceiving function can be considered as the transceiving unit 101 of the terminal device 10, for example, for supporting the terminal device to perform the receiving function as described in the portion of FIG.
  • the processor having the processing function is regarded as the processing unit 102 of the terminal device 10.
  • the terminal device 10 includes a transceiver unit 101 and a processing unit 102.
  • the transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver, and the like.
  • the device for implementing the receiving function in the transceiver unit 101 can be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 101 is regarded as a sending unit, that is, the transceiver unit 101 includes a receiving unit and a sending unit.
  • the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc.
  • the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit or the like.
  • the processor 102 can be configured to execute instructions stored in the memory to control the transceiver unit 101 to receive signals and/or transmit signals to perform the functions of the terminal device in the foregoing method embodiments.
  • the function of the transceiver unit 101 can be implemented by a dedicated chip through a transceiver circuit or a transceiver.
  • FIG. 4 is a schematic structural diagram of a network device according to an embodiment of the present disclosure, which may be a schematic structural diagram of a base station.
  • the base station can be applied to the system shown in FIG. 1 to perform the functions of the network device in the foregoing method embodiment.
  • the base station 20 includes one or more radio frequency units, such as a remote radio unit (RRU) 201 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 202.
  • RRU 201 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 2011 and a radio frequency unit 2012.
  • the RRU 201 part is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for transmitting DCI to a terminal device.
  • the BBU 202 part is mainly used for performing baseband processing, controlling a base station, and the like.
  • the RRU 201 and the BBU 202 may be physically disposed together or physically separated, that is, distributed base stations.
  • the BBU 202 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spread spectrum, and the like.
  • the BBU processing unit
  • the BBU can be used to control the base station to perform an operation procedure about the network device in the foregoing method embodiment.
  • the BBU 202 may be composed of one or more boards, and multiple boards may jointly support a single access standard radio access network (such as an LTE network), or may separately support different access modes of wireless. Access network (such as LTE network, 5G network or other network).
  • the BBU 202 also includes a memory 2021 and a processor 2022.
  • the memory 2021 is used to store necessary instructions and data.
  • the memory 2021 stores the correspondence relationship between the indication information and the combination information in the above embodiment and the like.
  • the processor 2022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform an operation procedure about the network device in the foregoing method embodiment.
  • the memory 2021 and the processor 2022 can serve one or more boards. That is, the memory and processor can be individually set on each board. It is also possible that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.
  • FIG. 5 is a schematic structural diagram of a communication device 500.
  • the device 500 can be used to implement the method described in the foregoing method embodiments. For details, refer to the description in the foregoing method embodiments.
  • the communication device 500 can be a chip, a network device (such as a base station), a terminal device or other network device, and the like.
  • the communication device 500 includes one or more processors 501.
  • the processor 501 can be a general purpose processor or a dedicated processor or the like. For example, it can be a baseband processor, or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (eg, base stations, terminals, or chips, etc.), execute software programs, and process data of the software programs.
  • the communication device may include a transceiver unit for implementing input (reception) and output (transmission) of signals.
  • the communication device can be a chip, and the transceiver unit can be an input and/or output circuit of the chip, or a communication interface.
  • the chip can be used for a terminal or base station or other network device.
  • the communication device may be a terminal or a base station or other network device
  • the transceiver unit may be a transceiver, a radio frequency chip, or the like.
  • the communication device 500 includes one or more of the processors 501, and the one or more processors 501 can implement the method of the network device or the terminal device in the embodiments shown in FIG. 2.
  • the communication device 500 includes means for generating downlink control information DCI, and means for transmitting DCI.
  • the function of generating the DCI and the function of transmitting the DCI may be implemented by one or more processors.
  • one or more processors can be generated
  • the DCI is transmitted through a transceiver, or an input/output circuit, or an interface of a chip.
  • DCI refer to the related description in the foregoing method embodiment.
  • the communication device 500 includes means for receiving downlink control information DCI and means for determining a feedback status of the uplink data based on the DCI.
  • the DCI and how to determine the receiving state of the uplink data are described in the related description in the foregoing method embodiments.
  • the DCI may be received, for example, by a transceiver, or an input/output circuit, or an interface of a chip, and the reception status of the uplink data is determined based on the DCI by one or more processors.
  • the processor 501 can implement other functions in addition to the methods of the embodiments shown in FIG. 2 .
  • the processor 501 may also include instructions 503 that may be executed on the processor such that the communication device 500 performs the methods described in the above method embodiments.
  • the communication device 500 can also include circuitry that can implement the functions of the foregoing method embodiments.
  • the communication device 500 can include one or more memories 502 having instructions 504 stored thereon that can be executed on the processor such that the communication device 500 executes The method described in the above method embodiments.
  • data may also be stored in the memory.
  • Instructions and/or data can also be stored in the optional processor.
  • the processor and the memory may be provided separately or integrated.
  • the communication device 500 may further include a transceiver unit 505 and an antenna 506.
  • the processor 501 may be referred to as a processing unit to control a communication device (terminal or base station).
  • the transceiver unit 505 can be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., for implementing the transceiver function of the communication device through the antenna 506.
  • the embodiment of the present application further provides a communication system including the foregoing network device and one or more terminal devices.
  • the processor may be a central processing unit (“CPU"), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration. Circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory can include read only memory and random access memory and provides instructions and data to the processor.
  • a portion of the memory may also include a non-volatile random access memory.
  • the bus system may include a power bus, a control bus, and a status signal bus in addition to the data bus.
  • a power bus may include a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the various buses are labeled as bus systems in the figure.
  • each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • 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, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the computer program product includes one or more computer instructions (programs).
  • programs When the computer program instructions (programs) are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium eg, a solid state disk (SSD)

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Abstract

Provided in the present application are a data transmission method and device. The method comprises: a network device receiving uplink data transmitted by a terminal device; and the network device transmitting first downlink control information to the terminal device, wherein a value of a first bit of the first downlink control information is 1, the number of the first bit is greater than or equal to 1, and the first bit is used to indicate whether the first downlink control information indicates a positive acknowledgment or a negative acknowledgment to the uplink data by the network device. The embodiments of the present application can reduce delay on the feedback to uplink data.

Description

数据传输方法和装置Data transmission method and device 技术领域Technical field
本申请涉及通信领域，特别涉及通信领域中的数据传输方法和装置。The present application relates to the field of communications, and in particular, to a data transmission method and apparatus in the field of communications.
背景技术Background technique
在长期演进(long term evolution，LTE)系统中，终端设备和网络设备之间交互的信息通过物理信道进行承载。其中，下行数据通过物理下行共享信道(physical downlink shared channel，PDSCH)进行承载，上行数据通过物理上行共享信道(physical uplink shared channel，PUSCH)进行承载。网络设备通过下行控制信息(downlink control information，DCI)为终端设备指示PDSCH和PUSCH的资源分配、调制编码方式等信息。该DCI可以通过物理下行控制信道(physical downlink control channel，PDCCH)进行承载。In a long term evolution (LTE) system, information exchanged between a terminal device and a network device is carried over a physical channel. The downlink data is carried by a physical downlink shared channel (PDSCH), and the uplink data is carried by a physical uplink shared channel (PUSCH). The network device indicates information such as resource allocation and modulation and coding mode of the PDSCH and the PUSCH to the terminal device by using downlink control information (DCI). The DCI can be carried by a physical downlink control channel (PDCCH).
LTE系统的上下行数据传输采用混合自动重传请求(hybrid automatic repeat request，HARQ)技术，HARQ技术是将向前纠错和检错重发相结合的一种技术，其具体处理流程为：在每次发送的数据中含有纠错和检错的校验比特，如果接收的数据中的出错比特数目在纠错能力之内，则错误被自行纠正；当差错严重，超出纠错能力时，则让发送端重发该数据。LTE采用多进程的停止等待HARQ实现方式，即对于某一个HARQ进程，若接收端接收到的数据正确，不需要重传，则接收端向发送端反馈肯定应答(acknowledgement，ACK)，否则反馈否定应答(negative acknowledgment，NACK)指示重传。发送端在等待ACK/NACK反馈时，此进程暂时中止传输，当收到反馈后，再根据反馈的是ACK还是NACK选择发送新的数据还是重传此进程上一次发送的数据。上行数据的ACK/NACK反馈通过物理HARQ指示信道(physical hybrid ARQ indicator channel，PHICH)进行承载。LTE系统的PDCCH和PHICH占用的频率宽度可以是整个系统带宽，最大可达到20MHz。当终端设备的接收带宽小于系统带宽时，就无法接收PDCCH承载的DCI，以及PHICH承载的ACK/NACK。The uplink and downlink data transmission of the LTE system adopts a hybrid automatic repeat request (HARQ) technology, and the HARQ technology is a technology that combines forward error correction and error detection retransmission. The specific processing flow is: Each time the data is sent contains error correction and error detection bits. If the number of error bits in the received data is within the error correction capability, the error is corrected by itself; when the error is serious and the error correction capability is exceeded, then Let the sender resend the data. LTE adopts the multi-process stop-and-wait HARQ implementation mode. That is, for a certain HARQ process, if the data received by the receiving end is correct and does not need to be retransmitted, the receiving end feeds back an acknowledgement (ACK) to the transmitting end, otherwise the feedback is negative. A negative acknowledgment (NACK) indicates a retransmission. When the sender waits for ACK/NACK feedback, the process temporarily suspends the transmission. When the feedback is received, it selects whether to send new data or retransmit the last data sent by the process according to whether the ACK or NACK is fed back. The ACK/NACK feedback of the uplink data is carried by a physical hybrid ARQ indicator channel (PHICH). The PDCCH and PHICH occupied by the LTE system may have a frequency width of the entire system and may reach a maximum of 20 MHz. When the receiving bandwidth of the terminal device is smaller than the system bandwidth, the DCI carried by the PDCCH and the ACK/NACK carried by the PHICH cannot be received.
由于机器类型通信的物理下行控制信道(MTC Physical Downlink Control Channel，MPDCCH)占用的带宽不大于一个窄带，可以将DCI通过MPDCCH来承载。在现有的一种传输方法中，通过在DCI中包含1个比特的新数据指示(new data indicator，NDI)，用于指示该DCI调度的上行数据是新发送的数据，还是重传此进程上一次发送的数据，使得网络设备对于PUSCH承载的上行数据是否正确接收的ACK/NACK反馈的功能可以通过MPDCCH承载的DCI中的NDI比特来实现，使得终端设备不用再接收PHICH承载的ACK/NACK。The DCI can be carried by the MPDCCH because the bandwidth occupied by the physical downlink control channel (MPDCCH) of the machine type communication is not more than one narrowband. In an existing transmission method, a new data indicator (NDI) containing 1 bit in the DCI is used to indicate whether the uplink data scheduled by the DCI is newly transmitted data, or is the process retransmitted. The function of the ACK/NACK feedback in the DCI carried by the MPDCCH can be implemented by the NDI bit in the DCI carried by the MPDCCH, so that the terminal device does not need to receive the ACK/NACK of the PHICH bearer. .
但是，通过DCI中的NDI对PUSCH承载的上行数据是否正确接收进行隐式反馈的方法，基站为了表明终端设备一次发送的数据是正确接收了，需要等到下一次有终端设备的上行数据时才能通过NDI指示新传上行数据。而终端设备在一次上行数据发送完成后，可能需要等一段时间才有下一次需要发送的上行数据，因此，网络设备也需要等一段时间 才能通过DCI中的NDI反馈正确接收，使得终端设备可能无法及时获知上行数据是否被网络设备正确接收，即网络设备对上行数据的反馈存在较大延迟。However, the method for implicitly receiving the uplink data of the PUSCH by the NDI in the DCI is implicitly fed back. In order to indicate that the data sent by the terminal device is correctly received, the base station needs to wait until the next uplink data of the terminal device. The NDI indicates new uplink data. After the uplink data transmission is completed, the terminal device may need to wait for a period of time before the next uplink data needs to be sent. Therefore, the network device also needs to wait for a period of time. The NDI feedback in the DCI can be correctly received, so that the terminal device may not be able to know in time whether the uplink data is correctly received by the network device, that is, the network device has a large delay in the feedback of the uplink data.
发明内容Summary of the invention
本申请提供一种数据传输方法和装置，以期能够降低网络设备对上行数据的反馈延迟。The present application provides a data transmission method and apparatus, in order to reduce the feedback delay of network equipment to uplink data.
第一方面，提供了一种数据传输的方法，该方法包括网络设备接收上行数据，发送第一下行控制信息，该第一下行控制信息的第一比特的取值均为1，该第一比特的个数大于或等于1，该第一比特用于表示该第一下行控制信息用于指示该网络设备对该上行数据的肯定应答或者否定应答。The first aspect provides a data transmission method, where the method includes: the network device receives the uplink data, and sends the first downlink control information, where the first bit of the first downlink control information has a value of 1, the first The number of one bit is greater than or equal to 1. The first bit is used to indicate that the first downlink control information is used to indicate that the network device acknowledges or negatively acknowledges the uplink data.
相应地，终端设备发送上行数据，接收该第一下行控制信息。Correspondingly, the terminal device sends uplink data, and receives the first downlink control information.
可选地，该终端设备可以根据该第一下行控制信息，确定该上行数据是否被该网络设备正确接收。Optionally, the terminal device may determine, according to the first downlink control information, whether the uplink data is correctly received by the network device.
因此，本申请实施例中，网络设备一旦确定了是否正确接收终端设备发送的上行数据，即可向该终端设备发送上述第一下行控制信息，反馈该上行数据的接收情况，无需像现有技术那样等到下一次终端设备需要发送上行数据的时候才反馈，这样，有利于降低网络设备对上行数据的反馈时延，从而提高系统性能。Therefore, in the embodiment of the present application, after determining whether the network device correctly receives the uplink data sent by the terminal device, the network device may send the first downlink control information to the terminal device, and feedback the receiving condition of the uplink data, without The technology waits until the next time the terminal device needs to send uplink data, so that it is beneficial to reduce the feedback delay of the network device to the uplink data, thereby improving system performance.
可选地，在第一方面的一种实现方式中，在该网络设备接收终端设备发送的上行数据之前，该方法还包括：Optionally, in an implementation manner of the first aspect, before the network device receives the uplink data sent by the terminal device, the method further includes:
该网络设备向该终端设备发送第二下行控制信息，在该第二下行控制信息的第一比特中，至少一个比特的取值是0，该第二下行控制信息用于该网络设备调度物理上行共享信道；The network device sends the second downlink control information to the terminal device. In the first bit of the second downlink control information, the value of the at least one bit is 0, and the second downlink control information is used by the network device to schedule the physical uplink. Shared channel
相应地，该终端设备接收该网络设备发送的第二下行控制信息，在该第二下行控制信息的第一比特中，至少一个比特的取值是0，该第二下行控制信息用于调度物理上行共享信道；Correspondingly, the terminal device receives the second downlink control information that is sent by the network device, where the value of the at least one bit is 0 in the first bit of the second downlink control information, and the second downlink control information is used to schedule the physics. Uplink shared channel;
该终端设备根据该第二下行控制信息，向该网络设备发送该上行数据。The terminal device sends the uplink data to the network device according to the second downlink control information.
具体地，在本申请实施例中，网络设备发送给终端设备的下行控制信息可以分为第一下行控制信息和第二下行控制信息。其中，第一下行控制信息是用于网络设备对终端设备发送的上行数据是否正确接收进行反馈的。第一下行控制信息可以不用于该网络设备调度物理上行共享信道。第一下行控制信息也可以用于该网络设备调度重传的物理上行共享信道。第二下行控制信息用于该网络设备调度物理上行共享信道。有鉴于此，第一下行控制信息可以在网络设备确定了是否正确接收上行数据之后的任意时刻发送。第二下行控制信息只能在该网络设备调度该终端设备进行数据传输的时候发送。由于在第二下行控制信息中，存在第一比特，该第一比特的取值不均为1，因此，本申请实施例将第一控制信息中的第一比特的取值均设置为1，以便于终端设备能够区分第一下行控制信息和第二下行控制信息。Specifically, in the embodiment of the present application, the downlink control information that is sent by the network device to the terminal device may be divided into the first downlink control information and the second downlink control information. The first downlink control information is used by the network device to feed back whether the uplink data sent by the terminal device is correctly received. The first downlink control information may not be used by the network device to schedule a physical uplink shared channel. The first downlink control information may also be used for the physical uplink shared channel that the network device schedules retransmission. The second downlink control information is used by the network device to schedule a physical uplink shared channel. In view of this, the first downlink control information may be sent at any time after the network device determines whether the uplink data is correctly received. The second downlink control information can only be sent when the network device schedules the terminal device for data transmission. The value of the first bit in the first control information is set to 1 by using the first bit in the second downlink control information, and the value of the first bit is not 1. Therefore, the terminal device can distinguish the first downlink control information and the second downlink control information.
具体的，当第一比特的取值均为1时，终端设备可以确定接收到的下行控制信息为反馈的控制信息，在第一比特的取值不全为1即第一比特中至少一个比特的取值是0时，终端设备可以确定下行控制信息为数据调度的第二下行控制信息。 Specifically, when the value of the first bit is 1, the terminal device may determine that the received downlink control information is feedback control information, where the value of the first bit is not all 1, that is, at least one bit of the first bit. When the value is 0, the terminal device may determine that the downlink control information is the second downlink control information of the data scheduling.
因此，本申请实施例的数据传输方法，网络设备一旦确定了是否正确接收终端设备发送的上行数据，即可向该终端设备发送上述第一下行控制信息，反馈该上行数据的接收情况，无需像现有技术那样等到下一次终端设备需要发送上行数据的时候才反馈，这样，有利于降低网络设备对上行数据的反馈时延，从而提高系统性能。Therefore, in the data transmission method of the embodiment of the present application, once the network device determines whether the uplink data sent by the terminal device is correctly received, the network device may send the first downlink control information to the terminal device, and feedback the receiving condition of the uplink data, without As in the prior art, the next time the terminal device needs to send uplink data, the feedback is delayed, which is beneficial to reducing the feedback delay of the network device to the uplink data, thereby improving system performance.
可选地，在第一方面的一种实现方式中，该第一下行控制信息只用于指示对该上行数据的肯定应答，该第一下行控制信息还包括混合自动重传请求HARQ进程号指示比特，该HARQ进程号指示比特用于指示该上行数据对应的HARQ进程。Optionally, in an implementation manner of the first aspect, the first downlink control information is only used to indicate a positive response to the uplink data, where the first downlink control information further includes a hybrid automatic repeat request (HARQ process). The number indication bit, the HARQ process number indication bit is used to indicate the HARQ process corresponding to the uplink data.
可选地，在第一方面的一种实现方式中，在该第一下行控制信息的比特中，除存在的填充比特、该第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位及该HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0。Optionally, in an implementation manner of the first aspect, in the bits of the first downlink control information, in addition to the existing padding bits, the first bit, and downlink control information used to distinguish the scheduled physical downlink shared channel The format and the flag of the downlink control information format of the physical uplink shared channel and the HARQ process number indication bit are used, and the remaining bits are reserved bits, or all values are 1, or all values are 0.
具体而言，当网络设备对上行数据正确接收需要反馈ACK时，发送第一DCI，该第一DCI只用于指示上行数据正确接收，即为该网络设备的肯定应答。当网络设备对上行数据接收错误需要反馈NACK时，则网络设备可以按照现有的方式通过NDI比特指示重传上行数据，即通过NDI比特对上行数据错误接收进行隐式反馈，此时DCI中的第一比特不全为1。终端设备接收DCI时，若检测到DCI中的第一比特都是1时，则UE认为这个DCI指示ACK，即其针对的HARQ进程的上行数据被网络设备正确接收。Specifically, when the network device needs to feed back the ACK for the correct reception of the uplink data, the first DCI is sent, and the first DCI is only used to indicate that the uplink data is correctly received, that is, an acknowledgement of the network device. When the network device needs to feed back NACK for the uplink data receiving error, the network device may retransmit the uplink data by using the NDI bit in the existing manner, that is, implicitly feedback the uplink data error receiving through the NDI bit, at this time in the DCI. The first bit is not all ones. When the terminal device receives the DCI, if the first bit in the DCI is detected to be 1, the UE considers that the DCI indicates an ACK, that is, the uplink data of the HARQ process for which the UE is correctly received by the network device.
具体地，上述第一下行控制信息除了第一比特之外，还可以包括用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位，以及HARQ进程号指示比特。在第一下行控制信息中，可以包括填充比特，也可以不包括填充比特。其中，该填充比特用于扩展第一下行控制信息包括的比特数目，使得第一下行控制信息包括的比特数目达到目标值。第一下行控制信息包括填充比特时，该第一下行控制信息的比特中存在的填充比特的个数大于0。第一下行控制信息不包括填充比特时，该第一下行控制信息的比特中存在的填充比特的个数是0。在下行控制信息中，用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位为0，通常表示该下行控制信息的格式是调度物理上行共享信道的下行控制信息格式；用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位为1，通常表示该下行控制信息的格式是调度物理下行共享信道的下行控制信息格式。在该第一下行控制信息中，用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位为0。除此之外，该第一下行控制信息中包括的其余比特可以是保留比特，可以取值均为1，也可以取值均为0，本申请实施例对此不作限定。对于该第一下行控制信息包括的该其余比特的个数，本申请实施例对此也不作限定。Specifically, the first downlink control information may include, in addition to the first bit, a downlink control information format for scheduling the physical downlink shared channel and a downlink control information format for scheduling the physical uplink shared channel, and the HARQ. The process number indicates the bit. In the first downlink control information, padding bits may or may not be included. The padding bit is used to expand the number of bits included in the first downlink control information, so that the number of bits included in the first downlink control information reaches a target value. When the first downlink control information includes padding bits, the number of padding bits existing in the bits of the first downlink control information is greater than zero. When the first downlink control information does not include padding bits, the number of padding bits existing in the bits of the first downlink control information is 0. In the downlink control information, the flag of the downlink control information format for scheduling the physical downlink shared channel and the downlink control information format for scheduling the physical uplink shared channel are 0, which generally indicates that the format of the downlink control information is a scheduling physical uplink shared channel. The downlink control information format is used to distinguish between the downlink control information format for scheduling the physical downlink shared channel and the downlink control information format for scheduling the physical uplink shared channel, and the flag of the downlink control information format is 1, which generally indicates that the format of the downlink control information is a scheduled physical downlink shared channel. The downlink control information format. In the first downlink control information, the flag of the downlink control information format for scheduling the physical downlink shared channel and the downlink control information format for scheduling the physical uplink shared channel are 0. In addition, the remaining bits included in the first downlink control information may be reserved bits, and may all have a value of 1 or a value of 0, which is not limited in this embodiment of the present application. For the number of the remaining bits included in the first downlink control information, the embodiment of the present application does not limit this.
可选地，在第一方面的一种实现方式中，该第一下行控制信息还包括反馈指示比特，该反馈指示比特用于指示该网络设备对该上行数据的肯定应答或者否定应答。Optionally, in an implementation manner of the first aspect, the first downlink control information further includes a feedback indication bit, where the feedback indication bit is used to indicate that the network device acknowledges or negatively acknowledges the uplink data.
可选地，在第一方面的一种实现方式中，该上行数据包括N个HARQ进程对应的上行数据，该反馈指示比特的个数为N，且该反馈指示比特的N个比特分别用于指示该网络设备对该N个HARQ进程对应的上行数据的肯定应答或者否定应答，N为大于1的整数。Optionally, in an implementation manner of the first aspect, the uplink data includes uplink data corresponding to N HARQ processes, where the number of the feedback indication bits is N, and N bits of the feedback indication bit are used respectively. Instructing the network device to acknowledge or negatively acknowledge the uplink data corresponding to the N HARQ processes, and N is an integer greater than 1.
具体地，上述第一下行控制信息可以针对一个HARQ进程对应的上行数据是否正确 接收进行反馈，也可以针对多个HARQ进程对应的上行数据是否正确接收进行反馈。在该第一下行控制信息针对N个HARQ进程对应的上行数据是否正确接收进行反馈的情况下，该第一下行控制信息包括的反馈指示比特的个数为N，一个比特对应一个HARQ进程。这样，网络设备在一个下行控制信息中，可以向终端设备反馈多个HARQ进程对应的上行数据的接收情况，以便于降低网络设备的反馈开销，提高网络设备的反馈效率。Specifically, the foregoing first downlink control information may be correct for uplink data corresponding to one HARQ process. The feedback is received, and the uplink data corresponding to the multiple HARQ processes may be fed back. In the case that the first downlink control information is fed back for the correct reception of the uplink data corresponding to the N HARQ processes, the number of the feedback indication bits included in the first downlink control information is N, and one bit corresponds to one HARQ process. . In this way, the network device can feed back the uplink data corresponding to the multiple HARQ processes to the terminal device in a downlink control information, so as to reduce the feedback overhead of the network device and improve the feedback efficiency of the network device.
可选地，在第一方面的一种实现方式中，在该第一下行控制信息中，Optionally, in an implementation manner of the first aspect, in the first downlink control information,
除存在的填充比特、该第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位以及该反馈指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0；或The remaining bits are reserved except for the existing padding bits, the first bit, the downlink control information format for distinguishing the physical downlink shared channel, and the flag of the downlink control information format for scheduling the physical uplink shared channel, and the feedback indication bit. Bit, or a value of 1, or a value of 0; or
除存在的填充比特、该第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、该反馈指示比特以及用于指示重传的上行数据的调度信息的比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0，其中该用于指示重传的上行数据的调度信息的比特包括用于指示以下至少一种信息的比特：In addition to the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel, the feedback indication bit, and the indication for retransmission The bits of the scheduling information of the uplink data are the reserved bits, or the values are all 1, or the value is 0. The bits of the scheduling information for indicating the retransmitted uplink data are included to indicate the following. At least one bit of information:
资源分配、调制编码方式、重复次数以及下行控制信息子帧重复次数。Resource allocation, modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
可选地，在第一方面的一种实现方式中，该N等于2。Optionally, in an implementation of the first aspect, the N is equal to two.
在通常情况下，上行数据对应的HARQ进程最多有2个。该反馈指示比特的个数为2，且该反馈指示比特的2个比特分别用于指示该网络设备对该2个HARQ进程对应的上行数据的肯定应答或者否定应答。Under normal circumstances, there are at most two HARQ processes corresponding to the uplink data. The number of the feedback indication bits is 2, and the 2 bits of the feedback indication bit are respectively used to indicate an acknowledgement or a negative response of the network device to the uplink data corresponding to the two HARQ processes.
可选地，在第一方面的一种实现方式中，该反馈指示比特的个数为1，该第一下行控制信息还包括HARQ进程号指示比特，该HARQ进程号指示比特用于指示该上行数据对应的HARQ进程。Optionally, in an implementation manner of the first aspect, the number of the feedback indication bits is 1, and the first downlink control information further includes a HARQ process number indication bit, where the HARQ process number indication bit is used to indicate the The HARQ process corresponding to the uplink data.
具体地，在该第一下行控制信息仅用于反馈一个HARQ进程对应的上行数据的接收情况时，该第一下行控制信息中还可以携带HARQ进程号指示比特，用于指示本次反馈所对应的HARQ进程。在该第一下行控制信息用于反馈多个HARQ进程对应的上行数据的接收情况时，网络设备和终端设备可以按照预先约定的规则，确定第一控制信息中的各个反馈指示比特与该多个HARQ进程中的每个HARQ进程的上行数据之间的一一对应关系，或者，由网络设备向终端设备配置上述一一对应关系。该终端设备在接收到该第一下行控制信息之后，便可以根据该一一对应关系，直接确定该多个HARQ进程中的每个HARQ进程的上行数据对应的反馈指示比特，并根据该反馈指示比特确定对应的上行数据是否被网络设备正确接收。Specifically, when the first downlink control information is used to feed back the uplink data corresponding to the one HARQ process, the first downlink control information may further carry a HARQ process number indication bit, which is used to indicate the current feedback. The corresponding HARQ process. When the first downlink control information is used to feed back the uplink data corresponding to the multiple HARQ processes, the network device and the terminal device may determine, according to a predetermined rule, each feedback indication bit in the first control information. One-to-one correspondence between the uplink data of each HARQ process in the HARQ process, or the network device allocates the one-to-one correspondence to the terminal device. After receiving the first downlink control information, the terminal device may directly determine, according to the one-to-one correspondence, a feedback indication bit corresponding to uplink data of each HARQ process in the multiple HARQ processes, and according to the feedback The indication bit determines whether the corresponding uplink data is correctly received by the network device.
可选地，在第一方面的一种实现方式中，在该第一下行控制信息的比特中，Optionally, in an implementation manner of the first aspect, in a bit of the first downlink control information,
除存在的填充比特、该第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、该反馈指示比特以及该HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0；或In addition to the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel, the feedback indication bit, and the HARQ process number indication bit In addition, the remaining bits are reserved bits, or all values are 1, or the value is 0; or
除存在的填充比特、该第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、该反馈指示比特、用于指示重传的上行数据的调度信息的比特以及该HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0，其中，该用于指示重传的上行数据的调度信息的 比特包括用于指示以下至少一种信息的比特：In addition to the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel, the feedback indication bit, and the indication for retransmission The bits of the scheduling information of the uplink data and the HARQ process number indication bits, the remaining bits are reserved bits, or all of the values are 1, or the value is 0, wherein the scheduling of the uplink data for indicating retransmission is used. informational The bits include bits for indicating at least one of the following:
资源分配、调制编码方式、重复次数以及下行控制信息子帧重复次数。Resource allocation, modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
具体地，上述第一下行控制信息可以仅仅用于网络设备对上行数据是否正确接收进行反馈，也可以既用于网络设备对上行数据是否正确接收进行反馈，在网络设备反馈的是NACK的情况下，还用于调度终端设备重传该上行数据。因此，该第一下行控制信息还可以包括用于指示重传的上行数据的调度信息的比特，但本申请实施例对此不作限定。Specifically, the foregoing first downlink control information may be used only for the network device to feed back whether the uplink data is correctly received, or may be used for the network device to feed back whether the uplink data is correctly received, and the network device feeds back the NACK. The method is further configured to schedule the terminal device to retransmit the uplink data. Therefore, the first downlink control information may further include a bit for indicating scheduling information of the retransmitted uplink data, but the embodiment of the present application does not limit this.
作为一个可选的实施例，该反馈指示比特是在该第一下行控制信息的比特中，除存在的填充比特、该第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位以及混合自动重传请求HARQ进程号指示比特之外的多个比特。As an optional embodiment, the feedback indication bit is in a bit of the first downlink control information, except for a padding bit that exists, the first bit, a downlink control information format used to distinguish the scheduled physical downlink shared channel, and A flag of a downlink control information format of the physical uplink shared channel and a plurality of bits other than the hybrid automatic repeat request HARQ process number indication bit are scheduled.
可选地，该多个比特是第一下行控制信息的比特中，除存在的填充比特、该第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位以及混合自动重传请求HARQ进程号指示比特之外的全部比特。Optionally, the multiple bits are in the bits of the first downlink control information, except for the existing padding bits, the first bit, the downlink control information format used to distinguish the scheduled physical downlink shared channel, and the scheduling of the physical uplink shared channel. The flag bits of the downlink control information format and all bits except the hybrid automatic repeat request HARQ process number indication bit.
其中，该HARQ进程号指示比特用于指示该上行数据对应的HARQ进程。可选的，该反馈指示比特的取值均为1用于指示对该上行数据的肯定应答；该反馈指示比特的取值均为0用于指示对该上行数据的否定应答。可选的，该反馈指示比特的取值均为0用于指示对该上行数据的肯定应答；该反馈指示比特的取值均为1用于指示对该上行数据的否定应答。该反馈指示比特的个数大于1个，均用于指示对该HARQ进程号指示比特所指示的HARQ进程对应的上行数据的肯定应答或者否定应答。该反馈指示比特的各个比特的取值都相同。The HARQ process number indication bit is used to indicate the HARQ process corresponding to the uplink data. Optionally, the value of the feedback indication bit is 1 for indicating a positive response to the uplink data, and the value of the feedback indication bit is 0 for indicating a negative response to the uplink data. Optionally, the value of the feedback indication bit is 0 to indicate an acknowledgement to the uplink data, and the value of the feedback indication bit is 1 to indicate a negative response to the uplink data. The number of the feedback indication bits is greater than one, and is used to indicate an acknowledgement or a negative acknowledgement of the uplink data corresponding to the HARQ process indicated by the HARQ process number indication bit. The values of the bits of the feedback indication bit are the same.
可选地，在第一方面的一种实现方式中，该第一下行控制信息的比特数与该第二下行控制信息的比特数相等，且该第一下行控制信息的第一比特的位置与该第二下行控制信息的第一比特的位置相同；和/或，Optionally, in an implementation manner of the first aspect, the number of bits of the first downlink control information is equal to the number of bits of the second downlink control information, and the first bit of the first downlink control information is The location is the same as the location of the first bit of the second downlink control information; and/or,
该第一下行控制信息与该第二下行控制信息的格式相同。The first downlink control information has the same format as the second downlink control information.
因此，本申请实施例通过将设置第一下行控制信息的比特数与调度数据的DCI的比特数据相同，或者，格式相同，不会增加终端设备对该第一下行控制信息的盲检测复杂度，实现与调度数据的DCI的兼容性。Therefore, in the embodiment of the present application, by setting the number of bits of the first downlink control information to be the same as the bit data of the DCI of the scheduling data, or the format is the same, the terminal device does not increase the blind detection of the first downlink control information. Degree, achieve compatibility with the DCI of the scheduled data.
可选地，在第一方面的一种实现方式中，该第二下行控制信息的第一比特为用于指示调制编码方式的比特；和/或，该第一比特的个数为4。Optionally, in an implementation manner of the first aspect, the first bit of the second downlink control information is a bit used to indicate a modulation and coding mode; and/or the number of the first bit is 4.
可选地，在第一方面的一种实现方式中，该第二下行控制信息的第一比特为用于指示资源分配的域的全部比特或者部分比特；或，Optionally, in an implementation manner of the first aspect, the first bit of the second downlink control information is all bits or partial bits of the domain used to indicate resource allocation; or
该第二下行控制信息的第一比特为用于指示资源分配和调制编码方式的域的全部比特或者部分比特。The first bit of the second downlink control information is all bits or partial bits of a field for indicating resource allocation and modulation and coding mode.
可选地，在第一方面的一种实现方式中，该第二下行控制信息的第一比特第一取值状态指示的物理上行共享信道的资源是小于12个子载波的资源。Optionally, in an implementation manner of the first aspect, the resource of the physical uplink shared channel indicated by the first bit first state of the second downlink control information is a resource of less than 12 subcarriers.
可选地，在第一方面的一种实现方式中，该第一比特的个数为9或11；或，Optionally, in an implementation manner of the first aspect, the number of the first bits is 9 or 11; or
该第一比特的个数大于
Figure PCTCN2017097272-appb-000001
或， The number of the first bits is greater than
Figure PCTCN2017097272-appb-000001
or,
该第一比特的个数为
Figure PCTCN2017097272-appb-000002
其中，
Figure PCTCN2017097272-appb-000003
表示上行系统带宽中包含的物理资源块的个数。The number of the first bits is
Figure PCTCN2017097272-appb-000002
among them,
Figure PCTCN2017097272-appb-000003
Indicates the number of physical resource blocks included in the uplink system bandwidth.
可选地，在第一方面的一种实现方式中，在该第一下行控制信息的比特中，用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位取值为0。Optionally, in an implementation manner of the first aspect, the downlink control information format for scheduling the physical downlink shared channel and the downlink control information for scheduling the physical uplink shared channel are used in the bit of the first downlink control information. The format flag has a value of 0.
可选地，在第一方面的一种实现方式中，该用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位是区分控制信息格式6-0B和控制信息格式6-1B的标志位。Optionally, in an implementation manner of the first aspect, the downlink control information format used to distinguish the physical downlink shared channel and the downlink control information format of the physical uplink shared channel are used to distinguish the control information format. 0B and the flag of control information format 6-1B.
因此，本申请实施例中，针对6-0B格式的DCI，网络设备一旦确定了是否正确接收终端设备发送的上行数据，即可向该终端设备发送上述第一下行控制信息，反馈该上行数据的接收情况，无需像现有技术那样等到下一次终端设备需要发送上行数据的时候才反馈，这样，有利于降低网络设备对上行数据的反馈时延，从而提高系统性能。Therefore, in the embodiment of the present application, for the DCI of the 6-0B format, after determining whether the network device correctly receives the uplink data sent by the terminal device, the network device may send the first downlink control information to the terminal device, and feed back the uplink data. The receiving situation does not need to wait until the next time the terminal device needs to send uplink data as in the prior art, which is beneficial to reduce the feedback delay of the network device to the uplink data, thereby improving system performance.
第三方面，提供了一种网络设备，本申请提供的网络设备具有实现上述方法方面中网络设备行为的功能，其包括用于执行上述方法方面所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现，或硬件实现，或者通过硬件和软件结合来实现。In a third aspect, a network device is provided, and the network device provided by the present application has a function of implementing network device behavior in the foregoing method aspect, and includes a component corresponding to the step or function described in the foregoing method aspect. . The steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
在一种可能的设计中，上述网络设备包括一个或多个处理器和收发单元。所述一个或多个处理器被配置为支持所述网络设备执行上述方法中相应的功能。例如，生成DCI。所述收发单元用于支持所述网络设备与其他设备通信，实现接收/发送功能。例如，发送所述处理器生成的DCI。In one possible design, the network device described above includes one or more processors and transceiver units. The one or more processors are configured to support the network device to perform corresponding functions in the above methods. For example, generate a DCI. The transceiver unit is configured to support the network device to communicate with other devices to implement a receiving/transmitting function. For example, the DCI generated by the processor is transmitted.
应理解，本申请中，“/”可以表示“和/或”。It should be understood that in the present application, "/" may mean "and/or".
可选的，所述基站还可以包括一个或多个存储器，所述存储器用于与处理器耦合，其保存基站必要的程序指令和数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置。本申请并不限定。Optionally, the base station may further include one or more memories, where the memory is coupled to the processor, which stores necessary program instructions and data of the base station. The one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
所述网络设备可以为基站或TRP等，所述收发单元可以是收发器，或收发电路。The network device may be a base station or a TRP, and the transceiver unit may be a transceiver or a transceiver circuit.
所述网络设备还可以为通信芯片。所述收发单元可以为通信芯片的输入/输出电路或者接口。The network device can also be a communication chip. The transceiver unit may be an input/output circuit or interface of a communication chip.
另一个可能的设计中，上述网络设备，包括收发器、处理器和存储器。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，使得该网络设备执行第一方面、第一方面中任一种可能实现方式中网络设备完成的方法。In another possible design, the above network device includes a transceiver, a processor, and a memory. The processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the network device performs the first aspect, any one of the first aspects The method of completing the network device in the mode.
第四方面，提供了一种终端设备，本申请提供的终端设备具有实现上述方法方面中终端设备行为的功能，其包括用于执行上述方法方面所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现，或硬件实现，或者通过硬件和软件结合来实现。According to a fourth aspect, a terminal device is provided. The terminal device provided by the present application has a function for implementing the behavior of the terminal device in the foregoing method aspect, and includes a component corresponding to the step or function described in the foregoing method aspect. . The steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
在一种可能的设计中，上述终端设备包括一个或多个处理器和收发单元。所述收发单元用于支持所述终端设备与其他设备通信，实现接收/发送功能。例如，接收DCI。所述一个或多个处理器被配置为支持所述终端设备执行上述方法中相应的功能。例如，根据 DCI确定上行数据的反馈情况。In one possible design, the above terminal device includes one or more processors and transceiver units. The transceiver unit is configured to support the terminal device to communicate with other devices to implement a receiving/transmitting function. For example, receive DCI. The one or more processors are configured to support the terminal device to perform a corresponding function in the above method. For example, according to The DCI determines the feedback of the uplink data.
可选的，所述终端设备还可以包括一个或多个存储器，所述存储器用于与处理器耦合，其保存基站必要的程序指令和数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置。本申请并不限定。Optionally, the terminal device may further include one or more memories, and the memory is configured to be coupled to the processor, which stores necessary program instructions and data of the base station. The one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
所述终端设备可以为UE等，所述收发单元可以是收发器，或收发电路。The terminal device may be a UE or the like, and the transceiver unit may be a transceiver or a transceiver circuit.
所述终端设备还可以为通信芯片。所述收发单元可以为通信芯片的输入/输出电路或者接口。The terminal device can also be a communication chip. The transceiver unit may be an input/output circuit or interface of a communication chip.
另一个可能的设计中，上述终端设备，包括收发器、处理器和存储器。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第一方面第一方面中任一种可能实现方式中终端设备完成的方法。In another possible design, the above terminal device includes a transceiver, a processor, and a memory. The processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the terminal device performs any of the possible implementations of the first aspect of the first aspect The method in which the terminal device is completed.
第五方面，提供了一种系统，该系统包括上述终端设备和网络设备。In a fifth aspect, a system is provided, the system comprising the above terminal device and a network device.
第六方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当该计算机程序被运行时，使得计算机执行上述第一方面第一方面中任一种可能实现方式中的方法。In a sixth aspect, a computer program product is provided, the computer program product comprising: a computer program (which may also be referred to as a code, or an instruction), when the computer program is executed, causing the computer to perform the first aspect of the first aspect described above Any of the possible implementations.
第七方面，提供了一种计算机可读介质，该计算机可读介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面、第一方面中任一种可能实现方式中的方法。In a seventh aspect, a computer readable medium storing a computer program (which may also be referred to as a code, or an instruction), when executed on a computer, causes the computer to perform the first aspect, first Any of the possible implementations of the aspect.
第八方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于支持网络设备实现上述方面中所涉及的功能，例如，例如接收或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存网络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。In an eighth aspect, the present application provides a chip system including a processor for supporting a network device to implement the functions involved in the above aspects, such as, for example, receiving or processing data and/or processing involved in the above method. information. In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the network device. The chip system can be composed of chips, and can also include chips and other discrete devices.
第九方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于终端设备实现上述方面中所涉及的功能，例如，例如发送或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，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。In a ninth aspect, the present application provides a chip system including a processor for a terminal device to implement the functions involved in the above aspects, such as, for example, transmitting or processing data and/or information involved in the above method. . In a possible design, the chip system further comprises a memory for storing necessary program instructions and data of the terminal device. The chip system can be composed of chips, and can also include chips and other discrete devices.
附图说明DRAWINGS
图1是本申请实施例可应用的一种系统场景示意图。FIG. 1 is a schematic diagram of a system scenario applicable to an embodiment of the present application.
图2是根据本申请另一实施例的数据传输的方法示意流程图。2 is a schematic flow chart of a method of data transmission according to another embodiment of the present application.
图3是根据本申请一个实施例的终端设备的示意框图。FIG. 3 is a schematic block diagram of a terminal device according to an embodiment of the present application.
图4是根据本申请一个实施例的网络设备的示意框图。4 is a schematic block diagram of a network device in accordance with one embodiment of the present application.
图5是根据本申请一个实施例的装置的示意框图。Figure 5 is a schematic block diagram of an apparatus in accordance with one embodiment of the present application.
具体实施方式Detailed ways
下面将结合附图，对本申请中的技术方案进行描述。The technical solutions in the present application will be described below with reference to the accompanying drawings.
本申请实施例可应用于各种通信系统，因此，下面的描述不限制于特定通信系统。例如，本申请实施例可以应用于全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband  code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、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)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、以及未来的第五代(5th generation，5G)系统或新无线(new radio，NR)等。The embodiments of the present application are applicable to various communication systems, and therefore, the following description is not limited to a specific communication system. For example, the embodiment of the present application can be applied to a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, and a wideband code division multiple access (wideband). Code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division double Time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, and future fifth generation (5th generation, 5G) ) System or new radio (NR), etc.
应理解，在本申请实施例可应用的通信系统中，只要存在一个设备(例如，终端设备)发送上行数据，另一个设备(例如，网络设备)需要接收该上行数据，并通过相应的方式对该上行数据是否正确接收进行反馈即可，本申请实施例并不限于上述描述的通信系统。It should be understood that, in a communication system to which the embodiment of the present application is applicable, as long as one device (for example, a terminal device) transmits uplink data, another device (for example, a network device) needs to receive the uplink data, and the corresponding method is used. The uplink data is correctly received for feedback, and the embodiment of the present application is not limited to the communication system described above.
图1示出了适用于本申请实施例的无线通信系统100的示意性框图。该无线通信系统100可以包括网络设备110和至少一个终端设备，图1中示出了该至少一个终端设备为三个设备的情况，分别为终端设备120、130和140的情况，但本申请实施例并不限于此。FIG. 1 shows a schematic block diagram of a wireless communication system 100 suitable for use with embodiments of the present application. The wireless communication system 100 can include a network device 110 and at least one terminal device. FIG. 1 shows a case where the at least one terminal device is three devices, which are the case of the terminal devices 120, 130, and 140, respectively. The example is not limited to this.
应理解，本申请实施例中的网络设备110可以接收终端设备发送的上行数据，该网络设备可以是全球移动通讯(global system of mobile communication，GSM)或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple Access，WCDMA)中的基站(nodeB，NB)，还可以是长期演进(long term evolution，LTE)中的演进型基站(evolutional node B，eNB/eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及未来5G网络中的网络侧设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的网络设备等，例如，NR系统中传输点(TRP或TP)、NR系统中的基站(gNB)、5G系统中的基站的一个或一组(包括多个天线面板)天线面板等，本申请实施例对此并未特别限定。It should be understood that the network device 110 in the embodiment of the present application may receive uplink data sent by the terminal device, where the network device may be global system of mobile communication (GSM) or code division multiple access (CDMA). The base transceiver station (BTS) may also be a base station (nodeB, NB) in wideband code division multiple access (WCDMA), or may be long term evolution (LTE). Evolved base station (eNB/eNodeB), or a relay station or access point, or an in-vehicle device, a wearable device, and a network-side device in a future 5G network or a public land mobile communication network in the future (public land) A network device or the like in a mobile network (PLMN), for example, a transmission point (TRP or TP) in an NR system, a base station (gNB) in an NR system, or one or a group of base stations in a 5G system (including a plurality of antenna panels) The antenna panel and the like are not particularly limited in this embodiment of the present application.
本申请实施例中的终端设备可以向网络设备发送上行数据，例如，该终端设备可以是进行机器类型通信(machine type communication，MTC)业务的设备，终端设备可也可以称为用户设备(user equipment，UE)，例如，带宽降低低复杂度用户设备(Bandwidth-reduced Low-complexity UE，BL UE)，覆盖增强用户设备(Coverage Enhancement UE，CE UE)；终端设备可也可以称为接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、无人机设备以及未来5G网络中的终端设备或者未来演进的PLMN中的终端设备等，本申请实施例对此并不限定。The terminal device in the embodiment of the present application may send uplink data to the network device. For example, the terminal device may be a device that performs a machine type communication (MTC) service, and the terminal device may also be referred to as a user device. , UE), for example, Bandwidth-reduced Low-complexity UE (BL UE), Coverage Enhancement UE (CE UE); the terminal device may also be referred to as an access terminal, Subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication. Functional handheld device, computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a drone device, and a terminal device in a future 5G network or a terminal device in a future evolved PLMN, etc. This example is not limited to this.
图1中，展示了终端设备120为用户设备，终端设备130为车载设备，终端设备140为打印机的情况。In FIG. 1, a case where the terminal device 120 is a user device, the terminal device 130 is an in-vehicle device, and the terminal device 140 is a printer is shown.
应理解，本申请实施例中的网络设备110也可以为上述的一种终端设备，这种情况下，上述的网络设备与终端设备间的通信可以演变为终端设备间的通信，这种情况下，也可以称为机器间通信(machine to machine，M2M)，或设备间通信(D2D)本申请实施例并不限于此。 It should be understood that the network device 110 in the embodiment of the present application may also be a terminal device as described above. In this case, the communication between the network device and the terminal device may be evolved into communication between the terminal devices. In this case, It may also be referred to as machine to machine (M2M), or inter-device communication (D2D). The embodiment of the present application is not limited thereto.
如图1所示，在终端设备发送上行数据后，网络设备需要反馈该上行数据是否正确接收，以便在反馈错误接收的情况下，需要终端设备重传该数据，在反馈正确接收的情况下，不需要终端设备重传数据。As shown in FIG. 1 , after the terminal device sends the uplink data, the network device needs to feed back whether the uplink data is correctly received, so that in case of feedback error reception, the terminal device needs to retransmit the data, and if the feedback is correctly received, No terminal device is required to retransmit data.
已有的方案中，网络设备可以通过DCI中的1个比特的NDI指示该DCI调度的上行数据是新发送的数据，还是重传此进程上一次发送的数据。In the existing solution, the network device can indicate whether the uplink data scheduled by the DCI is newly transmitted data or the data transmitted last time by the process through the NDI of 1 bit in the DCI.
然而，现有方案中，该DCI用于调度数据，也就是说只有在有数据调度的情况下，网络设备才会发送DCI，那么在网络设备错误接收上行数据的情况下，网络设备可以通过调度终端设备重传的DCI隐式反馈上行数据接收失败。但是，在网络设备正确接收终端设备发送的上行数据的情况下，在网络设备没有新的上行数据调度时，网络设备不会发送DCI调度新传，从而来反馈该上行数据的正确接收，只有在有新的上行数据调度的情况下，网络设备才会发送调度该新的上行数据的DCI来隐式反馈之前的上行数据的正确接收，导致终端设备可能无法及时获知上行数据是否被网络设备正确接收，即网络设备对上行数据的反馈存在较大延迟。However, in the existing solution, the DCI is used to schedule data, that is, the network device sends the DCI only when there is data scheduling, and the network device can be scheduled by the network device if the network device incorrectly receives the uplink data. The DCI implicit feedback uplink data reception of the retransmission of the terminal device fails. However, in the case that the network device correctly receives the uplink data sent by the terminal device, when the network device does not have a new uplink data scheduling, the network device does not send a DCI scheduling new transmission, thereby feeding back the correct reception of the uplink data, only in the case of In the case of a new uplink data scheduling, the network device sends the DCI that schedules the new uplink data to implicitly receive the correct reception of the uplink data, so that the terminal device may not be able to know in time whether the uplink data is correctly received by the network device. That is, there is a large delay in the feedback of the network device to the uplink data.
本申请实施例巧妙地提出了一种数据传输方法，能够通过发送控制信息(例如，DCI)对上行数据进行及时反馈，无需等待有数据调度时才发送控制信息，能够降低网络设备对上行数据的反馈延迟。The embodiment of the present application subtly proposes a data transmission method, which can provide timely feedback of uplink data by sending control information (for example, DCI), and can send control information without waiting for data scheduling, thereby reducing network equipment's uplink data. Feedback delay.
以下，为了便于理解和说明，作为示例而非限定，对本申请中的数据传输的方法在通信系统中的执行过程和动作进行说明。Hereinafter, for ease of understanding and explanation, the execution process and actions of the data transmission method in the present application in the communication system will be described by way of example and not limitation.
具体的，如图2所示方法包括：Specifically, the method shown in FIG. 2 includes:
210，终端设备发送上行数据。210. The terminal device sends uplink data.
相应地，网络设备接收该上行数据。Accordingly, the network device receives the uplink data.
例如，网络设备首先生成用于上行数据调度的下行控制信息，例如，第二下行控制信息，所述第二下行控制信息用于所述网络设备调度物理上行共享信道。然后，网络设备向终端设备发送该第二下行控制信息，终端设备在获取到该第二下行控制信息后，根据该第二下行控制信息向网络设备发送该上行数据。For example, the network device first generates downlink control information for uplink data scheduling, for example, second downlink control information, where the second downlink control information is used by the network device to schedule a physical uplink shared channel. Then, the network device sends the second downlink control information to the terminal device, and after acquiring the second downlink control information, the terminal device sends the uplink data to the network device according to the second downlink control information.
220，所述网络设备向所述终端设备发送第一下行控制信息。220. The network device sends first downlink control information to the terminal device.
所述第一下行控制信息的第一比特的取值均为1，所述第一比特的个数大于或等于1，所述第一比特用于表示所述第一下行控制信息用于指示所述网络设备对所述上行数据的肯定应答或者否定应答。The first bit of the first downlink control information has a value of 1, and the number of the first bit is greater than or equal to 1. The first bit is used to indicate that the first downlink control information is used. Instructing the network device to acknowledge or negatively acknowledge the uplink data.
相应地，终端设备接收该第一下行控制信息。Correspondingly, the terminal device receives the first downlink control information.
可选地，该终端设备可以根据该第一下行控制信息，确定该上行数据是否被该网络设备正确接收。Optionally, the terminal device may determine, according to the first downlink control information, whether the uplink data is correctly received by the network device.
具体地，终端设备向网络设备发送上行数据，该网络设备接收该上行数据，并向该终端设备发送第一比特的取值均为1的第一下行控制信息。该终端设备接收该网络设备发送的下行控制信息，根据该下行控制信息的第一比特的取值均为1，确定该下行控制信息为第一下行控制信息，进一步根据该第一下行控制信息确定该网络设备对该上行数据是否正确接收。Specifically, the terminal device sends uplink data to the network device, and the network device receives the uplink data, and sends, to the terminal device, first downlink control information with a first bit value of 1. The terminal device receives the downlink control information sent by the network device, and determines that the downlink control information is the first downlink control information according to the first bit of the downlink control information, and further determines the first downlink control according to the first downlink control. The information determines whether the network device correctly receives the uplink data.
例如，网络设备可以通过物理下行信道发送该第一下行控制信息，该物理下行信信道可以为PDCCH或MPDCCH等，本申请实施例并不限于此。 For example, the network device may send the first downlink control information by using a physical downlink channel, where the physical downlink channel may be a PDCCH or an MPDCCH, and the embodiment of the present application is not limited thereto.
应理解，本申请实施例中第一下行控制信息也可以称为用于反馈的下行控制信息，该第一下行控制信息通过第一比特取值均为1表示所述第一下行控制信息用于指示所述网络设备对所述上行数据的肯定应答或者否定应答。It should be understood that, in the embodiment of the present application, the first downlink control information may also be referred to as downlink control information for feedback, where the first downlink control information indicates that the first downlink control is performed by using a first bit value of 1. The information is used to indicate a positive response or a negative response of the network device to the uplink data.
第二下行控制信息为数据调度的控制信息，该第二下行控制信息中的第一比特中，至少一个比特的取值是0。The second downlink control information is control information of the data scheduling, and the value of the at least one bit of the first bit in the second downlink control information is 0.
具体地，在本申请实施例中，网络设备发送给终端设备的下行控制信息可以分为第一下行控制信息和第二下行控制信息。其中，第一下行控制信息是用于网络设备对终端设备发送的上行数据是否正确接收进行反馈的。第一下行控制信息可以不用于该网络设备调度物理上行共享信道。第一下行控制信息也可以用于该网络设备调度重传的物理上行共享信道。第二下行控制信息用于该网络设备调度物理上行共享信道。有鉴于此，第一下行控制信息可以在网络设备确定了是否正确接收上行数据之后的任意时刻发送。第二下行控制信息只能在该网络设备调度该终端设备进行数据传输的时候发送。由于在第二下行控制信息中，存在第一比特，该第一比特的取值不均为1，因此，本申请实施例将第一控制信息中的第一比特的取值均设置为1，以便于终端设备能够区分第一下行控制信息和第二下行控制信息。Specifically, in the embodiment of the present application, the downlink control information that is sent by the network device to the terminal device may be divided into the first downlink control information and the second downlink control information. The first downlink control information is used by the network device to feed back whether the uplink data sent by the terminal device is correctly received. The first downlink control information may not be used by the network device to schedule a physical uplink shared channel. The first downlink control information may also be used for the physical uplink shared channel that the network device schedules retransmission. The second downlink control information is used by the network device to schedule a physical uplink shared channel. In view of this, the first downlink control information may be sent at any time after the network device determines whether the uplink data is correctly received. The second downlink control information can only be sent when the network device schedules the terminal device for data transmission. The value of the first bit in the first control information is set to 1 by using the first bit in the second downlink control information, and the value of the first bit is not 1. Therefore, the terminal device can distinguish the first downlink control information and the second downlink control information.
具体的，当第一比特的取值均为1时，终端设备可以确定接收到的下行控制信息为用于反馈的第一下行控制信息，在第一比特的取值不全为1即第一比特中至少一个比特的取值是0时，终端设备可以确定下行控制信息为用于数据调度的第二下行控制信息。Specifically, when the value of the first bit is 1, the terminal device may determine that the received downlink control information is the first downlink control information for feedback, where the value of the first bit is not all one, that is, the first When the value of at least one bit in the bit is 0, the terminal device may determine that the downlink control information is the second downlink control information used for data scheduling.
因此，本申请实施例的数据传输方法，网络设备一旦确定了是否正确接收终端设备发送的上行数据，即可向该终端设备发送上述第一下行控制信息，反馈该上行数据的接收情况，无需像现有技术那样等到下一次终端设备需要发送上行数据的时候才反馈，这样，有利于降低网络设备对上行数据的反馈时延，从而提高系统性能。Therefore, in the data transmission method of the embodiment of the present application, once the network device determines whether the uplink data sent by the terminal device is correctly received, the network device may send the first downlink control information to the terminal device, and feedback the receiving condition of the uplink data, without As in the prior art, the next time the terminal device needs to send uplink data, the feedback is delayed, which is beneficial to reducing the feedback delay of the network device to the uplink data, thereby improving system performance.
可选地，该第一下行控制信息的格式可以与第二下行控制信息的格式相同，例如，为6-0B。Optionally, the format of the first downlink control information may be the same as the format of the second downlink control information, for example, 6-0B.
可选地，作为另一实施例，所述第一下行控制信息的比特数与第二DCI的比特数相等，且所述第一下行控制信息的第一比特的位置与调度数据的DCI的第一比特的位置相同。Optionally, in another embodiment, the number of bits of the first downlink control information is equal to the number of bits of the second DCI, and the location of the first bit of the first downlink control information and the DCI of the scheduling data. The position of the first bit is the same.
因此，本申请实施例通过将设置第一下行控制信息的比特数与调度数据的DCI的比特数据相同，或者，格式相同，不会增加终端设备对该第一下行控制信息的盲检测复杂度，实现与调度数据的DCI的兼容性。Therefore, in the embodiment of the present application, by setting the number of bits of the first downlink control information to be the same as the bit data of the DCI of the scheduling data, or the format is the same, the terminal device does not increase the blind detection of the first downlink control information. Degree, achieve compatibility with the DCI of the scheduled data.
应理解，由于第一下行控制信息与数据调度的第二下行控制信息的格式相同，因此，终端设备需要辨别获取的控制信息是反馈的控制信息还是数据调度的控制信息。It should be understood that, since the format of the first downlink control information and the second downlink control information of the data scheduling are the same, the terminal device needs to distinguish whether the acquired control information is feedback control information or data scheduling control information.
具体的，当第一比特的取值均为1时，终端设备可以确定接收到的下行控制信息为用于反馈的第一下行控制信息，在第一比特的取值不全为1即第一比特中至少一个比特的取值是0时，终端设备可以确定下行控制信息为用于数据调度的第二下行控制信息。Specifically, when the value of the first bit is 1, the terminal device may determine that the received downlink control information is the first downlink control information for feedback, where the value of the first bit is not all one, that is, the first When the value of at least one bit in the bit is 0, the terminal device may determine that the downlink control information is the second downlink control information used for data scheduling.
首先，为了使得本文中的数据传输的方法容易理解，首先结合表1至表3介绍本申请实施例中的调度数据的下行控制信息即第二下行控制信息DCI的格式。应理解，本文中，以DCI作为下行控制信息的简称，但本申请的下行控制信息并不限定于此。First, in order to make the method for data transmission in this document easy to understand, the format of the downlink control information of the scheduling data, that is, the format of the second downlink control information DCI in the embodiment of the present application is first introduced in conjunction with Table 1 to Table 3. It should be understood that, in this document, DCI is used as an abbreviation of downlink control information, but the downlink control information of the present application is not limited thereto.
在覆盖增强模式B(CE mode B)情况下，第二DCI所包括的信息如表1至表3所示。表1的第二DCI的格式是6-0B。表2、表3的第二DCI的格式可以是6-0B，也可以不是 6-0B。In the case of coverage enhancement mode B (CE mode B), the information included in the second DCI is as shown in Tables 1 to 3. The format of the second DCI of Table 1 is 6-0B. The format of the second DCI of Table 2 and Table 3 may be 6-0B, or may not be 6-0B.
表1Table 1
Figure PCTCN2017097272-appb-000004
Figure PCTCN2017097272-appb-000004
表1示出了DCI格式6-0B一种第二DCI包含的域以及每个域包含的比特的个数。其中DCI格式6-0B包含的域包括6-0B和6-1B的区分标志位、用于指示资源块分配、调制编码方式MCS、重复次数、HARQ进程号、NDI、DCI子帧重复次数的域。Table 1 shows the DCI format 6-0B a second DCI containing domain and the number of bits contained in each domain. The field included in the DCI format 6-0B includes the distinguishing flag bits of 6-0B and 6-1B, and the field for indicating resource block allocation, modulation and coding mode MCS, repetition number, HARQ process number, NDI, and DCI subframe repetition number. .
表2Table 2
Figure PCTCN2017097272-appb-000005
Figure PCTCN2017097272-appb-000005
表2示出了另一第二DCI包含的域以及每个域包含的比特的个数。其中DCI包含的域包括区分调度PDSCH的DCI格式和调度PUSCH的DCI格式的标志位、用于指示MCS和资源分配、重复次数、HARQ进程号、NDI、DCI子帧重复次数的域。M是正整数。可选的，M大于
Figure PCTCN2017097272-appb-000006
可选的，
Figure PCTCN2017097272-appb-000007
或者
Figure PCTCN2017097272-appb-000008
Table 2 shows the fields contained in another second DCI and the number of bits contained in each field. The domain included in the DCI includes a DCI format for scheduling the PDSCH and a flag for the DCI format for scheduling the PUSCH, and a field for indicating the MCS and resource allocation, the number of repetitions, the HARQ process number, the NDI, and the number of DCI subframe repetitions. M is a positive integer. Optional, M is greater than
Figure PCTCN2017097272-appb-000006
Optional,
Figure PCTCN2017097272-appb-000007
or
Figure PCTCN2017097272-appb-000008
表3table 3
Figure PCTCN2017097272-appb-000009
Figure PCTCN2017097272-appb-000009
表3示出了再一种第二DCI包含的域以及每个域包含的比特的个数。其中DCI包含的域包括区分调度PDSCH的DCI格式和调度PUSCH的DCI格式的标志位、用于窄带指示和窄带内的资源分配、MCS、重复次数、HARQ进程号、NDI、DCI子帧重复次数的域。N是正整数。可选的，N大于
Figure PCTCN2017097272-appb-000010
Table 3 shows another domain included in the second DCI and the number of bits contained in each domain. The DCI includes a domain that includes a DCI format for scheduling a PDSCH and a flag for a DCI format for scheduling a PUSCH, a resource allocation for a narrowband indication and a narrowband, an MCS, a repetition number, a HARQ process number, an NDI, and a DCI subframe repetition number. area. N is a positive integer. Optional, N is greater than
Figure PCTCN2017097272-appb-000010
下面描述表1、表2和表3的区别。The differences between Table 1, Table 2, and Table 3 are described below.
表1中资源块分配分配的资源的粒度为PRB，其中，表1中
Figure PCTCN2017097272-appb-000011
个比特用于指示分配的窄带，3个比特用于指示在该窄带中分配的物理资源块。The granularity of resources allocated by resource block allocation in Table 1 is PRB, where, in Table 1,
Figure PCTCN2017097272-appb-000011
The bits are used to indicate the assigned narrowband and 3 bits are used to indicate the physical resource blocks allocated in the narrowband.
表2中，MCS和资源分配为一个域。在指示PUSCH的资源分配、MCS等信息的第二DCI中，所述MCS和资源分配的比特的一种取值状态对PUSCH采用的MCS以及分配的资源进行指示。所述MCS和资源分配的比特的取值状态可以是对PUSCH采用的MCS以及分配的资源进行联合编码。In Table 2, the MCS and resources are assigned as one domain. In the second DCI indicating the resource allocation of the PUSCH, the MCS, and the like, the value of the MCS and the resource allocation bit indicates the MCS used by the PUSCH and the allocated resource. The value of the MCS and the allocated bits of the resource may be jointly encoded by the MCS used by the PUSCH and the allocated resources.
可选地，所述MCS和资源分配的比特指示的为PUSCH分配的资源可以是S个子载波的资源，S是<12的正整数。所述MCS和资源分配的比特可以既能指示以PRB为单位为PUSCH分配的资源，也能指示以一个或多个子载波为单位为PUSCH分配的资源。所述MCS和资源分配的比特指示的为PUSCH分配的资源可以是在整个系统带宽内分配的资源；也可以是在所述MCS和资源分配的比特中包含
Figure PCTCN2017097272-appb-000012
个比特用于指示的窄带，剩余的比特指示在所述窄带内分配的资源。Optionally, the resources allocated by the MCS and the resource allocation bits for the PUSCH may be resources of S subcarriers, and S is a positive integer of <12. The MCS and resource allocated bits may indicate resources allocated for the PUSCH in units of PRBs, and may also indicate resources allocated for the PUSCH in units of one or more subcarriers. The resources allocated by the MCS and the resource allocation bits for the PUSCH may be resources allocated within the entire system bandwidth; or may be included in the MCS and resource allocation bits.
Figure PCTCN2017097272-appb-000012
The bits are used for the narrow band of indication, and the remaining bits indicate the resources allocated within the narrow band.
表3中，资源分配域的比特数为N，其中，N的个数可以是系统预配置的，或者是计算得出的，本申请实施例并不对N的数值作限定，例如，N可以为
Figure PCTCN2017097272-appb-000013
等等。In Table 3, the number of bits in the resource allocation field is N, where the number of Ns may be pre-configured by the system or calculated. The embodiment of the present application does not limit the value of N. For example, N may be
Figure PCTCN2017097272-appb-000013
and many more.
所述DCI中的资源分配的比特指示的为PUSCH分配的资源可以是S个子载波的资源，S是<12的正整数。所述DCI中的资源分配的比特可以既能指示以PRB为单位为PUSCH分配的资源，也能指示以一个或多个子载波为单位为PUSCH分配的资源。或者，所述资源分配的比特是仅支持指示以一个或多个子载波为单位为PUSCH分配资源的比特。所述资源分配的比特指示的为PUSCH分配的资源可以是在整个系统带宽内分配的资 源，也可以是在所述资源分配的比特中包含
Figure PCTCN2017097272-appb-000014
个比特用于指示的窄带，剩余的比特指示在所述窄带内分配的资源。。The resource allocated for the PUSCH indicated by the bit of the resource allocation in the DCI may be a resource of S subcarriers, and S is a positive integer of <12. The resource allocation bits in the DCI may indicate resources allocated for the PUSCH in units of PRBs, and may also indicate resources allocated for the PUSCH in units of one or more subcarriers. Alternatively, the resource allocated bits are bits that only support the allocation of resources for the PUSCH in units of one or more subcarriers. The resource allocated for the PUSCH indicated by the bit of the resource allocation may be a resource allocated within the entire system bandwidth, or may be included in the bit allocated by the resource.
Figure PCTCN2017097272-appb-000014
The bits are used for the narrow band of indication, and the remaining bits indicate the resources allocated within the narrow band. .
需要说明的是，上述表1至表3所示的第二DCI中，比特的取值均存在无效的取值。比特的某个取值是无效取值是指，在第二DCI中，比特的取值不为该取值。比特的取值是比特的二进制值，或者比特的取值状态。例如，在表1中，MCS的4比特的16种取值状态中，只有11种取值状态是有实际含义的有效状态。MCS的4比特表示的十进制数为MCS的索引IMCS。IMCS>10对于CE mode B的BL/CE UE是无效的取值。It should be noted that, in the second DCI shown in Tables 1 to 3 above, the values of the bits have invalid values. A value of a bit is an invalid value. In the second DCI, the value of the bit is not the value. The value of the bit is the binary value of the bit, or the value of the bit. For example, in Table 1, among the 16 kinds of 16-bit value states of the MCS, only 11 kinds of value states are valid states having actual meanings. The 4-digit representation of the MCS is the index I MCS of the MCS . I MCS >10 is an invalid value for the BL/CE UE of CE mode B.
例如，在表2中MCS和资源分配的比特的取值全为‘1’是没有意义的无效取值状态。For example, in Table 2, the values of the bits allocated by the MCS and the resource all are "1", which is a meaningless invalid value state.
例如，在表3中资源分配的比特的取值全为‘1’是没有意义的无效取值状态。For example, in Table 3, the value of the bit allocated by the resource is all "1", which is a meaningless invalid value state.
应理解，在实际应用中，用于数据调度的第二DCI中存在比特的取值不会为上述无效取值。因此，本申请实施例提出将所述比特作为第一比特，使得第一DCI的第一比特的取值全为一，第二DCI中的第一比特取值全为1为上述无效取值状态。这样，终端设备通过第一比特全为1即可确定获取的DCI为第一DCI，第一比特不全为1,则确定获取的DCI为第二DCI。所述第一比特可以是DCI的域的全部比特或者部分比特。It should be understood that, in practical applications, the value of the bit existing in the second DCI used for data scheduling is not the above invalid value. Therefore, the embodiment of the present application proposes that the bit is used as the first bit, so that the value of the first bit of the first DCI is all one, and the value of the first bit in the second DCI is all the value of the invalid value. . In this way, the terminal device determines that the acquired DCI is the first DCI by using all the first bits, and the first bit is not all 1, and then determines that the acquired DCI is the second DCI. The first bit may be all bits or partial bits of the domain of the DCI.
可选地，与表1对应，所述第二下行控制信息的第一比特可以为用于指示调制编码方式的比特中的部分或全部比特。Optionally, corresponding to Table 1, the first bit of the second downlink control information may be part or all of the bits used to indicate the modulation and coding mode.
具体而言，在本申请实施例的一种设计中，为了能够使得本申请实施例的第一下行控制信息与用于调度的第二下行控制信息进行区分，本申请实施例中可以将第二下行控制信息中用于指示MCS的4个比特或部分比特作为第一比特，只要在该第一比特的取值均为1的情况下，MCS的4个比特的取值大于10即可。Specifically, in a design of the embodiment of the present application, in order to enable the first downlink control information in the embodiment of the present application to be distinguished from the second downlink control information used for scheduling, The second downlink control information is used to indicate the 4 bits or partial bits of the MCS as the first bit. As long as the value of the first bit is 1, the value of the 4 bits of the MCS may be greater than 10.
具体而言，MCS的4个比特的取值为1011、1100、1101、1110、1111时为无效的取值，也就是说在数据调度的第二下行控制信息中，MCS的4个比特的取值不会等于上述值。因此，本申请实施例中只要第一比特取1时，能够保证该4个比特取值大于10，所述第一比特即可用于表示下行控制信息为用于指示对所述上行数据的肯定应答或者否定应答收的第一下行控制信息。Specifically, when the value of the 4 bits of the MCS is 1011, 1100, 1101, 1110, and 1111, the value is invalid, that is, in the second downlink control information of the data scheduling, the 4 bits of the MCS are taken. The value will not equal the above value. Therefore, in the embodiment of the present application, when the first bit is taken as 1, the value of the four bits can be ensured to be greater than 10. The first bit can be used to indicate that the downlink control information is used to indicate the positive response to the uplink data. Or negating the first downlink control information received by the response.
可选地，在一种实现方式中，例如，该第一比特包括4个比特，在这种情况下，在第一DCI中，该第一比特取值为1111；在第二DCI中，该第一比特用于指示MCS。Optionally, in an implementation manner, for example, the first bit includes 4 bits, in this case, in the first DCI, the first bit takes a value of 1111; in the second DCI, the second DCI The first bit is used to indicate the MCS.
可选地，该第一比特可以包括第二DCI中用于指示MCS的比特中的部分比特，例如，该第一比特包括第二DCI中用于指示MCS的比特中的前两个比特(也可以称为高位的两个比特)，也即在前两个比特为1的情况下，用于指示MCS的比特的4个比特的取值11xx，其中，x可以取0也可以取1。Optionally, the first bit may include a part of the bits in the second DCI for indicating the MCS, for example, the first bit includes the first two bits in the second DCI for indicating the MCS (also It can be referred to as two bits of the upper bit, that is, in the case where the first two bits are 1, the value of 11 bits of the bit for indicating the MCS is 11xx, where x can take 0 or 1 .
可选地该第一比特可以包括三个比特，例如，包括第二DCI中用于指示MCS的比特的4个比特中的前两个比特，和其余比特中的任意一个比特。或者，该第一比特包括第二DCI中用于指示MCS的比特第一个比特以及第3和第4个比特。Optionally, the first bit may comprise three bits, for example comprising the first two of the four bits of the second DCI for indicating the bits of the MCS, and any one of the remaining bits. Alternatively, the first bit includes a first bit and a third and fourth bit of the second DCI for indicating the MCS.
可选地，作为另一实施例，与表2对应，所述第二下行控制信息的第一比特可以为用于指示资源分配和调制编码方式的域的全部比特或者部分比特。Optionally, as another embodiment, corresponding to Table 2, the first bit of the second downlink control information may be all bits or partial bits of a field for indicating resource allocation and modulation and coding mode.
可选地，作为另一实施例，与表3所示，述第二下行控制信息的第一比特为用于指示资源分配的域的全部比特或者部分比特。 Optionally, as another embodiment, as shown in Table 3, the first bit of the second downlink control information is all bits or partial bits of the domain used to indicate resource allocation.
进一步地，作为另一实施例，所述第一比特的个数为9或11；或，所述第一比特的个数大于
Figure PCTCN2017097272-appb-000015
或，所述第一比特的个数为
Figure PCTCN2017097272-appb-000016
Further, as another embodiment, the number of the first bits is 9 or 11; or, the number of the first bits is greater than
Figure PCTCN2017097272-appb-000015
Or, the number of the first bits is
Figure PCTCN2017097272-appb-000016
可选地，作为一个实施例，在220中，该第一下行控制信息只用于指示对所述上行数据的肯定应答，所述第一下行控制信息还包括混合自动重传请求HARQ进程号指示比特，所述HARQ进程号指示比特用于指示所述上行数据对应的HARQ进程。Optionally, as an embodiment, in 220, the first downlink control information is only used to indicate a positive response to the uplink data, and the first downlink control information further includes a hybrid automatic repeat request (HARQ process). The number indication bit, the HARQ process number indication bit is used to indicate a HARQ process corresponding to the uplink data.
可选地，在所述第一下行控制信息的比特中，除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位及所述HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0。Optionally, in the bits of the first downlink control information, except for the existing padding bits, the first bit, a downlink control information format used to distinguish the scheduled physical downlink shared channel, and a downlink for scheduling the physical uplink shared channel. In addition to the flag bits of the control information format and the HARQ process number indication bits, the remaining bits are reserved bits, or all values are 1, or the values are all 0.
可选的，当网络设备对上行数据正确接收需要反馈ACK时，发送第一DCI，该第一DCI只用于指示上行数据正确接收，即为该网络设备的肯定应答。当网络设备对上行数据接收错误需要反馈NACK时，则网络设备可以按照现有的方式通过NDI比特指示重传上行数据，即通过NDI比特对上行数据错误接收进行隐式反馈，此时DCI中的第一比特不全为1。终端设备接收DCI时，若检测到DCI中的第一比特都是1时，则UE认为这个DCI指示ACK，即其针对的HARQ进程的上行数据被网络设备正确接收。Optionally, when the network device needs to send an ACK to the uplink data, the first DCI is used to indicate that the uplink data is correctly received, that is, an acknowledgement of the network device. When the network device needs to feed back NACK for the uplink data receiving error, the network device may retransmit the uplink data by using the NDI bit in the existing manner, that is, implicitly feedback the uplink data error receiving through the NDI bit, at this time in the DCI. The first bit is not all ones. When the terminal device receives the DCI, if the first bit in the DCI is detected to be 1, the UE considers that the DCI indicates an ACK, that is, the uplink data of the HARQ process for which the UE is correctly received by the network device.
具体地，上述第一下行控制信息除了第一比特之外，还可以包括用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位，以及HARQ进程号指示比特。在第一下行控制信息中，可以包括填充比特，也可以不包括填充比特。其中，所述填充比特用于扩展第一下行控制信息包括的比特数目，使得第一下行控制信息包括的比特数目达到目标值。第一下行控制信息包括填充比特时，所述第一下行控制信息的比特中存在的填充比特的个数大于0。第一下行控制信息不包括填充比特时，所述第一下行控制信息的比特中存在的填充比特的个数是0。在下行控制信息中，用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位为0，通常表示所述下行控制信息的格式是调度物理上行共享信道的下行控制信息格式；用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位为1，通常表示所述下行控制信息的格式是调度物理下行共享信道的下行控制信息格式。在所述第一下行控制信息中，用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位为0。除此之外，该第一下行控制信息中包括的其余比特可以是保留比特，可以取值均为1，也可以取值均为0，本申请实施例对此不作限定。对于该第一下行控制信息包括的所述其余比特的个数，本申请实施例对此也不作限定。Specifically, the first downlink control information may include, in addition to the first bit, a downlink control information format for scheduling the physical downlink shared channel and a downlink control information format for scheduling the physical uplink shared channel, and the HARQ. The process number indicates the bit. In the first downlink control information, padding bits may or may not be included. The padding bit is used to expand the number of bits included in the first downlink control information, so that the number of bits included in the first downlink control information reaches a target value. When the first downlink control information includes padding bits, the number of padding bits existing in the bits of the first downlink control information is greater than zero. When the first downlink control information does not include padding bits, the number of padding bits existing in the bits of the first downlink control information is 0. In the downlink control information, the format of the downlink control information format for scheduling the physical downlink shared channel and the downlink control information format for scheduling the physical uplink shared channel are 0, which generally indicates that the format of the downlink control information is scheduling physical uplink sharing. The downlink control information format of the channel; the downlink control information format used to distinguish the physical downlink shared channel and the downlink control information format of the physical uplink shared channel are set to 1, which generally indicates that the format of the downlink control information is the scheduling physical downlink. The downlink control information format of the shared channel. In the first downlink control information, a flag for distinguishing between a downlink control information format for scheduling the physical downlink shared channel and a downlink control information format for scheduling the physical uplink shared channel is 0. In addition, the remaining bits included in the first downlink control information may be reserved bits, and may all have a value of 1 or a value of 0, which is not limited in this embodiment of the present application. For the number of the remaining bits included in the first downlink control information, the embodiment of the present application does not limit this.
下面针对上述表1至表3所示的第二DCI包含的内容，结合表4至6描述第一DCI仅用于指示ACK时的比特取值情况。 For the content of the second DCI shown in Tables 1 to 3 above, the case where the first DCI is used only for indicating the ACK is described in conjunction with Tables 4 to 6.
表4Table 4
Figure PCTCN2017097272-appb-000017
Figure PCTCN2017097272-appb-000017
表5table 5
Figure PCTCN2017097272-appb-000018
Figure PCTCN2017097272-appb-000018
表6Table 6
Figure PCTCN2017097272-appb-000019
Figure PCTCN2017097272-appb-000019
Figure PCTCN2017097272-appb-000020
Figure PCTCN2017097272-appb-000020
表4-表6为本申请实施例第一DCI和第二DCI的一种可能的实现方式。该第一DCI用于指示网络设备对上行数据的肯定应答。第一DCI包含的域可以和第二DCI包含的域相同，也可以和第二DCI包含的域不同或具有不同的名称。第二DCI的比特个数和第一DCI的比特个数相同。第二DCI的比特和第一DCI的比特相对应。表4-表6示出了第二DCI中各域的比特在第一DCI中的取值。其中，DCI格式6-0B和6-1B的区分标志位为0，表示该DCI的格式为6-0B。或者区分调度PDSCH的DCI格式和调度PUSCH的DCI格式的标志位为0。表4中示出了第一比特为MCS域的情况，表5中示出了第一比特为MCS和资源分配域的全部比特或者部分比特的情况，表6中示出了第一比特为资源分配域的全部比特或者部分比特的情况。且第一比特，全为1。在第一DCI和第二DCI中，用于指示HARQ进程号的域包括1个HARQ进程号指示比特。应理解，在上述表4至表6中，在所述第一下行控制信息的比特中，除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位及所述HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0。Table 4 - Table 6 is a possible implementation manner of the first DCI and the second DCI in the embodiment of the present application. The first DCI is used to indicate a positive response of the network device to the uplink data. The domain included in the first DCI may be the same as the domain included in the second DCI, or may be different from the domain included in the second DCI or have a different name. The number of bits of the second DCI is the same as the number of bits of the first DCI. The bits of the second DCI correspond to the bits of the first DCI. Table 4 - Table 6 shows the values of the bits of each field in the second DCI in the first DCI. The distinguishing flag bit of the DCI formats 6-0B and 6-1B is 0, indicating that the format of the DCI is 6-0B. Or distinguish between the DCI format for scheduling the PDSCH and the flag for the DCI format for scheduling the PUSCH to be 0. The case where the first bit is the MCS field is shown in Table 4, and the case where the first bit is the all bits or partial bits of the MCS and the resource allocation field is shown in Table 5, and the first bit is shown as a resource in Table 6. The case where all bits or partial bits of a domain are allocated. And the first bit, all ones. In the first DCI and the second DCI, the field for indicating the HARQ process number includes one HARQ process number indication bit. It should be understood that, in the foregoing Tables 4 to 6, in the bits of the first downlink control information, except for the existing padding bits, the first bit, and the downlink control information format used to distinguish the scheduled physical downlink shared channel. And the flag bits of the downlink control information format and the HARQ process number indication bit of the physical uplink shared channel are scheduled, and the remaining bits are reserved bits, or all values are 1, or the values are all 0.
网络设备将表4至表6中的DCI发送给终端设备之后，该终端设备可以首先确定该DCI中的6-0B和6-1B的区分标志位为0或者区分调度PDSCH的DCI格式和调度PUSCH的DCI格式的标志位为0，再根据第一比特均为1，确定该DCI为第一DCI，即用于反馈的DCI，由于该第一DCI是网络设备在正确接收上行数据的时候才发送，该终端设备可以直接根据该第一DCI确定该网络设备对上行数据已经正确接收，无需再通过反馈指示比特进行指示。After the network device sends the DCIs in Tables 4 to 6 to the terminal device, the terminal device may first determine that the distinguishing flag bits of 6-0B and 6-1B in the DCI are 0 or distinguish the DCI format and the scheduling PUSCH of the scheduling PDSCH. The flag bit of the DCI format is 0, and according to the first bit being 1, the DCI is determined to be the first DCI, that is, the DCI used for feedback, because the first DCI is sent by the network device when the uplink data is correctly received. The terminal device can directly determine, according to the first DCI, that the network device has correctly received the uplink data, and does not need to indicate by using the feedback indication bit.
应理解，在上述表4至表6中，在所述第一下行控制信息的比特中，除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位及所述HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0。It should be understood that, in the foregoing Tables 4 to 6, in the bits of the first downlink control information, except for the existing padding bits, the first bit, and the downlink control information format used to distinguish the scheduled physical downlink shared channel. And the flag bits of the downlink control information format and the HARQ process number indication bit of the physical uplink shared channel are scheduled, and the remaining bits are reserved bits, or all values are 1, or the values are all 0.
其中一种实施方式DCI中的该其余比特取值都是‘1’。The remaining bits in one of the embodiments DCI take a value of '1'.
另一种实施方式是该其余比特设置成全‘0’。本申请实施例并不限于此。Another embodiment is that the remaining bits are set to all '0'. The embodiments of the present application are not limited thereto.
可替代地，作为一个实施例，在220中，所述第一下行控制信息还包括反馈指示比特，所述反馈指示比特用于指示所述网络设备对所述上行数据的肯定应答或者否定应答。Alternatively, as an embodiment, in 220, the first downlink control information further includes a feedback indication bit, where the feedback indication bit is used to indicate that the network device acknowledges or negatively responds to the uplink data. .
应理解，在第一下行控制信息仅指示对所述上行数据的肯定应答的情况下，该第一下行控制信息可以不携带反馈指示比特，或者在该第一下行控制信息中存在反馈指示比特， 但该反馈指示比特取值均为0或者均为1。而在第一下行控制信息指示对所述上行数据的肯定应答或者否定应答的情况下，该第一下行控制信息需要包括反馈指示比特，该反馈指示比特具体用于指示网络设备的对所述上行数据的反馈为肯定应答ACK或否定应答NACK。It should be understood that, in a case where the first downlink control information only indicates an acknowledgement to the uplink data, the first downlink control information may not carry a feedback indication bit, or feedback exists in the first downlink control information. Indication bit, However, the feedback indication bits have a value of 0 or both. The first downlink control information needs to include a feedback indication bit, where the first downlink control information is used to indicate a positive response or a negative response to the uplink data, where the feedback indication bit is specifically used to indicate a location of the network device. The feedback of the uplink data is a positive acknowledgement ACK or a negative acknowledgement NACK.
进一步地，作为另一可选实施例，所述上行数据包括N个HARQ进程对应的上行数据，所述反馈指示比特的个数为N，且所述反馈指示比特的N个比特分别用于指示所述网络设备对所述N个HARQ进程对应的上行数据的肯定应答或者否定应答，N为大于1的整数。Further, as another optional embodiment, the uplink data includes uplink data corresponding to N HARQ processes, the number of the feedback indication bits is N, and the N bits of the feedback indication bit are used to indicate The network device acknowledges or negatively acknowledges the uplink data corresponding to the N HARQ processes, and N is an integer greater than 1.
具体地，上述第一下行控制信息可以针对一个HARQ进程对应的上行数据是否正确接收进行反馈，也可以针对多个HARQ进程对应的上行数据是否正确接收进行反馈。在该第一下行控制信息针对N个HARQ进程对应的上行数据是否正确接收进行反馈的情况下，该第一下行控制信息包括的反馈指示比特的个数为N，一个比特对应一个HARQ进程。这样，网络设备在一个下行控制信息中，可以向终端设备反馈多个HARQ进程对应的上行数据的接收情况，以便于降低网络设备的反馈开销，提高网络设备的反馈效率。Specifically, the first downlink control information may be used for feedback whether the uplink data corresponding to one HARQ process is correctly received, or may be fed back for whether the uplink data corresponding to multiple HARQ processes is correctly received. In the case that the first downlink control information is fed back for the correct reception of the uplink data corresponding to the N HARQ processes, the number of the feedback indication bits included in the first downlink control information is N, and one bit corresponds to one HARQ process. . In this way, the network device can feed back the uplink data corresponding to the multiple HARQ processes to the terminal device in a downlink control information, so as to reduce the feedback overhead of the network device and improve the feedback efficiency of the network device.
可选地，作为一个实施例，N＝2。Alternatively, as an embodiment, N=2.
在CE mode B的通常情况下，上行数据对应的HARQ进程最多有2个。所述反馈指示比特的个数为2，且所述反馈指示比特的2个比特分别用于指示所述网络设备对所述2个HARQ进程对应的上行数据的肯定应答或者否定应答。In the normal case of CE mode B, there are at most two HARQ processes corresponding to the uplink data. The number of the feedback indication bits is 2, and the 2 bits of the feedback indication bit are respectively used to indicate an acknowledgement or a negative response of the network device to the uplink data corresponding to the 2 HARQ processes.
进一步的，在上述实施例中，在所述第一下行控制信息中，Further, in the foregoing embodiment, in the first downlink control information,
除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位以及所述反馈指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0；或The remaining bits are included in addition to the padding bits, the first bit, the downlink control information format for scheduling the physical downlink shared channel, and the flag of the downlink control information format for scheduling the physical uplink shared channel, and the feedback indication bit. Is a reserved bit, or a value of 1, or a value of 0; or
除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、所述反馈指示比特以及用于指示重传的上行数据的调度信息的比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0，其中所述用于指示重传的上行数据的调度信息的比特包括用于指示以下至少一种信息的比特：In addition to the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel, the feedback indication bit, and the indication bit In addition to the bits of the scheduling information of the transmitted uplink data, the remaining bits are reserved bits, or all of the values are 1, or all values are 0, wherein the bits for indicating the scheduling information of the retransmitted uplink data include A bit indicating at least one of the following information:
资源分配、调制编码方式、重复次数以及下行控制信息子帧重复次数。Resource allocation, modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
作为一个可选的实施例，所述反馈指示比特的个数为1，所述第一下行控制信息还包括HARQ进程号指示比特，所述HARQ进程号指示比特用于指示所述上行数据对应的HARQ进程。As an optional embodiment, the number of the feedback indication bits is 1, the first downlink control information further includes a HARQ process number indication bit, and the HARQ process number indication bit is used to indicate that the uplink data corresponds to The HARQ process.
具体地，在该第一下行控制信息仅用于反馈一个HARQ进程对应的上行数据的接收情况时，该第一下行控制信息中还可以携带HARQ进程号指示比特，用于指示本次反馈所对应的HARQ进程。在该第一下行控制信息用于反馈多个HARQ进程对应的上行数据的接收情况时，网络设备和终端设备可以按照预先约定的规则，确定第一控制信息中的各个反馈指示比特与所述多个HARQ进程中的每个HARQ进程的上行数据之间的一一对应关系，或者，由网络设备向终端设备配置上述一一对应关系。该终端设备在接收到该第一下行控制信息之后，便可以根据该一一对应关系，直接确定该多个HARQ进程中的每个HARQ进程的上行数据对应的反馈指示比特，并根据所述反馈指示比特确定对应的上行数 据是否被网络设备正确接收。Specifically, when the first downlink control information is used to feed back the uplink data corresponding to the one HARQ process, the first downlink control information may further carry a HARQ process number indication bit, which is used to indicate the current feedback. The corresponding HARQ process. When the first downlink control information is used to feed back the receiving situation of the uplink data corresponding to the multiple HARQ processes, the network device and the terminal device may determine, according to a predetermined rule, each feedback indication bit in the first control information and the The one-to-one correspondence between the uplink data of each of the plurality of HARQ processes, or the one-to-one correspondence between the network devices and the terminal device. After receiving the first downlink control information, the terminal device may directly determine the feedback indication bit corresponding to the uplink data of each HARQ process in the multiple HARQ processes according to the one-to-one correspondence, and according to the The feedback indication bit determines the corresponding number of uplinks According to whether it is correctly received by the network device.
进一步地，在上述实施例中，在所述第一下行控制信息中，Further, in the foregoing embodiment, in the first downlink control information,
除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、所述反馈指示比特以及所述HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0；或a flag bit, a first control bit, a downlink control information format for scheduling a physical downlink shared channel, and a downlink control information format for scheduling a physical uplink shared channel, the feedback indication bit, and the HARQ process. In addition to the number indication bit, the remaining bits are reserved bits, or all values are 1, or the value is 0; or
除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、所述反馈指示比特、用于指示重传的上行数据的调度信息的比特以及所述HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0，其中，所述用于指示重传的上行数据的调度信息的比特包括用于指示以下至少一种信息的比特：In addition to the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel, the feedback indication bit, for indicating The bits of the scheduling information of the transmitted uplink data and the HARQ process number indication bits, the remaining bits are reserved bits, or all values are 1, or all values are 0, wherein the information is used to indicate retransmission. The bits of the scheduling information of the uplink data include bits for indicating at least one of the following:
资源分配、调制编码方式、重复次数以及下行控制信息子帧重复次数。Resource allocation, modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
具体地，上述第一下行控制信息可以仅仅用于网络设备对上行数据是否正确接收进行反馈，也可以既用于网络设备对上行数据是否正确接收进行反馈，在网络设备反馈的是NACK的情况下，还用于调度终端设备重传该上行数据。因此，该第一下行控制信息还可以包括用于指示重传的上行数据的调度信息的比特，但本申请实施例对此不作限定。Specifically, the foregoing first downlink control information may be used only for the network device to feed back whether the uplink data is correctly received, or may be used for the network device to feed back whether the uplink data is correctly received, and the network device feeds back the NACK. The method is further configured to schedule the terminal device to retransmit the uplink data. Therefore, the first downlink control information may further include a bit for indicating scheduling information of the retransmitted uplink data, but the embodiment of the present application does not limit this.
作为一个可选的实施例，所述反馈指示比特是在所述第一下行控制信息的比特中，除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位以及混合自动重传请求HARQ进程号指示比特之外的多个比特。As an optional embodiment, the feedback indication bit is in the bit of the first downlink control information, except for the existing padding bit, the first bit, and downlink control for distinguishing the scheduled physical downlink shared channel. The information format and the flag bits of the downlink control information format for scheduling the physical uplink shared channel and the multiple bits other than the hybrid automatic repeat request HARQ process number indication bit.
可选的，所述多个比特是在所述第一下行控制信息的比特中，除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位以及混合自动重传请求HARQ进程号指示比特之外的全部比特。Optionally, the multiple bits are in the bits of the first downlink control information, except for the existing padding bits, the first bit, and the downlink control information format and scheduling used to distinguish the scheduled physical downlink shared channel. The flag of the downlink control information format of the physical uplink shared channel and all bits except the hybrid automatic repeat request HARQ process number indication bit.
其中，所述HARQ进程号指示比特用于指示所述上行数据对应的HARQ进程。可选的，所述反馈指示比特的取值均为1用于指示对所述上行数据的肯定应答；所述反馈指示比特的取值均为0用于指示对所述上行数据的否定应答。可选的，所述反馈指示比特的取值均为0用于指示对所述上行数据的肯定应答；所述反馈指示比特的取值均为1用于指示对所述上行数据的否定应答。所述反馈指示比特的个数大于1个，均用于指示对所述HARQ进程号指示比特所指示的HARQ进程对应的上行数据的肯定应答或者否定应答。所述反馈指示比特的各个比特的取值都相同。The HARQ process number indication bit is used to indicate a HARQ process corresponding to the uplink data. Optionally, the value of the feedback indication bit is 1 for indicating a positive response to the uplink data, and the value of the feedback indication bit is 0 for indicating a negative response to the uplink data. Optionally, the value of the feedback indication bit is 0 to indicate a positive response to the uplink data, and the value of the feedback indication bit is 1 to indicate a negative response to the uplink data. The number of the feedback indication bits is greater than one, and is used to indicate an acknowledgement or a negative response to the uplink data corresponding to the HARQ process indicated by the HARQ process number indication bit. The values of the respective bits of the feedback indication bit are the same.
下面针对上述表1至表3所示的第二DCI包含的内容，结合表7至10描述第一DCI用于指示ACK或NACK时的比特取值情况，其中，表7至表10中包括反馈指示比特，且该反馈指示比特为1个比特，即对应对一个HARQ进程的上行数据反馈的情况。For the contents of the second DCI shown in Tables 1 to 3 above, the bit values of the first DCI for indicating ACK or NACK are described in conjunction with Tables 7 to 10, wherein the feedback is included in Tables 7 to 10. Indicates a bit, and the feedback indication bit is 1 bit, that is, a case corresponding to uplink data feedback for one HARQ process.
表7Table 7
Figure PCTCN2017097272-appb-000021
Figure PCTCN2017097272-appb-000021
Figure PCTCN2017097272-appb-000022
Figure PCTCN2017097272-appb-000022
表8Table 8
Figure PCTCN2017097272-appb-000023
Figure PCTCN2017097272-appb-000023
表9Table 9
Figure PCTCN2017097272-appb-000024
Figure PCTCN2017097272-appb-000024
表10Table 10
Figure PCTCN2017097272-appb-000025
Figure PCTCN2017097272-appb-000025
表7-表10为本申请实施例第一DCI和第二DCI的一种可能的实现方式。该第一DCI用于指示网络设备对上行数据的肯定应答或否定应答。第一DCI包含的域可以和第二DCI包含的域相同，也可以和第二DCI包含的域不同或具有不同的名称。第二DCI的比特个数和第一DCI的比特个数相同。第二DCI的比特和第一DCI的比特相对应。表7-表10示出了第二DCI中各域的比特在第一DCI中的取值。其中，DCI格式6-0B和6-1B的区分标志位为0，表示该DCI的格式为6-0B。或者区分调度PDSCH的DCI格式和调度PUSCH的DCI格式的标志位为0。表7和表8中示出了第一比特为MCS域的情况，表9中示出了第一比特为MCS和资源分配域的全部比特或者部分比特的情况，表10中示出了第一比特为资源分配域的全部比特或者部分比特的情况。且第一比特，全为1。在第一DCI和第二DCI中，用于指示HARQ进程号的域包括1个HARQ进程号指示比特。Table 7 - Table 10 is a possible implementation manner of the first DCI and the second DCI in the embodiment of the present application. The first DCI is used to indicate a positive or negative response of the network device to the uplink data. The domain included in the first DCI may be the same as the domain included in the second DCI, or may be different from the domain included in the second DCI or have a different name. The number of bits of the second DCI is the same as the number of bits of the first DCI. The bits of the second DCI correspond to the bits of the first DCI. Table 7 - Table 10 shows the values of the bits of each field in the second DCI in the first DCI. The distinguishing flag bit of the DCI formats 6-0B and 6-1B is 0, indicating that the format of the DCI is 6-0B. Or distinguish between the DCI format for scheduling the PDSCH and the flag for the DCI format for scheduling the PUSCH to be 0. Table 7 and Table 8 show the case where the first bit is the MCS field, and Table 9 shows the case where the first bit is the all bits or partial bits of the MCS and the resource allocation field, and the first table is shown in Table 10. The bit is the case where all bits or partial bits of the domain are allocated to the resource. And the first bit, all ones. In the first DCI and the second DCI, the field for indicating the HARQ process number includes one HARQ process number indication bit.
表7至表10中还包括一个比特的反馈指示比特，该反馈指示比特可以为除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、指示HARQ进程号的比特之外的比特中的任意一个比特。例如，表7中反馈指示比特为资源块分配域中的高一位比特，表8至表10中为NDI域的一个比特。应理解，表7至表10中，除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、指示HARQ进程号的比特以及所述反馈指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0。Table 7 to Table 10 further include a bit feedback indication bit, and the feedback indication bit may be a padding bit existing, a first bit, a downlink control information format used to distinguish the scheduled physical downlink shared channel, and a scheduling physical uplink. A flag bit of a downlink control information format of the shared channel, and any one of bits other than the bit indicating the HARQ process number. For example, the feedback indication bit in Table 7 is the upper one bit in the resource block allocation field, and one bit in the NDI field in Table 8 to Table 10. It should be understood that, in Tables 7 to 10, in addition to the existing padding bits, the first bit, the downlink control information format for distinguishing the scheduled physical downlink shared channel, and the flag of the downlink control information format for scheduling the physical uplink shared channel, In addition to the bit indicating the HARQ process number and the feedback indication bit, the remaining bits are reserved bits, or all values are 1, or all values are 0.
可选地，在一种实施方式中，DCI中的该其余比特取值都是‘1’。Optionally, in an embodiment, the remaining bits in the DCI take a value of '1'.
另一种实施方式中，DCI中的该其余比特取值都是‘0’。 In another embodiment, the remaining bits in the DCI take a value of '0'.
需要说明的是，表7至10中，描述了，其余比特为保留比特，或者取值均为1，或者取值均为0的情况。It should be noted that, in Tables 7 to 10, the case where the remaining bits are reserved bits, or the value is all 1, or the value is 0 is described.
但本申请实施例并不限于此。However, embodiments of the present application are not limited thereto.
当第一DCI种的反馈比特反馈NACK时，本申请实施例中的第一DCI还可以用于调度终端设备重传该上行数据。因此，该第一下行控制信息还可以包括用于指示重传的上行数据的调度信息的比特，但本申请实施例对此不作限定。The first DCI in the embodiment of the present application may be used to schedule the terminal device to retransmit the uplink data, when the feedback bit of the first DCI is fed back to the NACK. Therefore, the first downlink control information may further include a bit for indicating scheduling information of the retransmitted uplink data, but the embodiment of the present application does not limit this.
也就是说，在本申请实施例中，第一DCI中除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、所述反馈指示比特、指示HARQ进程号的比特以及用于指示重传的上行数据的调度信息的比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0，其中所述用于指示重传的上行数据的调度信息的比特包括用于指示以下至少一种信息的比特：That is, in the embodiment of the present application, the padding bits existing in the first DCI, the first bit, the downlink control information format used to distinguish the scheduled physical downlink shared channel, and the downlink control information for scheduling the physical uplink shared channel The flag of the format, the feedback indication bit, the bit indicating the HARQ process number, and the bit of the scheduling information for indicating the retransmitted uplink data, the remaining bits are reserved bits, or the values are all 1, or values All are 0, wherein the bit of the scheduling information for indicating the retransmitted uplink data includes a bit for indicating at least one of the following information:
资源分配、调制编码方式、重复次数以及下行控制信息子帧重复次数。Resource allocation, modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
本申请实施例中，在第一DCI反馈NACK的情况下，还可以指示调度重传，避免了再次发送调度重传的DCI，能够节省信令开销。In the embodiment of the present application, when the first DCI is fed back to the NACK, the scheduling retransmission may be further indicated, and the DCI that schedules retransmission is avoided from being sent again, which can save signaling overhead.
网络设备将表7至表10中的DCI发送给终端设备之后，该终端设备可以首先确定该DCI中的6-0B和6-1B的区分标志位或者区分调度PDSCH的DCI格式和调度PUSCH的DCI格式的标志位为0，再根据该第一比特均为1，确定该DCI为第一DCI，即用于反馈的DCI，最后，根据反馈指示比特对应的1比特指示，确定该网络设备反馈的是ACK或NACK。After the network device sends the DCIs in Tables 7 to 10 to the terminal device, the terminal device may first determine the distinguishing flag bits of 6-0B and 6-1B in the DCI or distinguish the DCI format of the scheduled PDSCH and the DCI of the scheduled PUSCH. The flag of the format is 0, and according to the first bit is 1, the DCI is determined to be the first DCI, that is, the DCI used for feedback, and finally, the feedback of the network device is determined according to the 1-bit indication corresponding to the feedback indication bit. Is ACK or NACK.
下面针对上述表1至表3所示的第二DCI包含的内容，结合表11至13描述第一DCI用于指示ACK或NACK时的比特取值情况，其中，表11至表13中包括反馈指示比特，且该反馈指示比特为2个比特，即对应对2个HARQ进程的上行数据进行反馈的情况。For the contents of the second DCI shown in Tables 1 to 3 above, the bit values of the first DCI for indicating ACK or NACK are described in conjunction with Tables 11 to 13, wherein the feedback is included in Tables 11 to 13. Indicates a bit, and the feedback indication bit is 2 bits, that is, a case corresponding to feedback of uplink data of 2 HARQ processes.
表11Table 11
Figure PCTCN2017097272-appb-000026
Figure PCTCN2017097272-appb-000026
表12Table 12
Figure PCTCN2017097272-appb-000027
Figure PCTCN2017097272-appb-000027
表13Table 13
Figure PCTCN2017097272-appb-000028
Figure PCTCN2017097272-appb-000028
表11-表13为本申请实施例第一DCI和第二DCI的一种可能的实现方式。该第一DCI 用于指示网络设备对上行数据的肯定应答或否定应答。第一DCI包含的域可以和第二DCI包含的域相同，也可以和第二DCI包含的域不同或具有不同的名称。第二DCI的比特个数和第一DCI的比特个数相同。第二DCI的比特和第一DCI的比特相对应。表11-表13示出了第二DCI中各域的比特在第一DCI中的取值。其中，DCI格式6-0B和6-1B的区分标志位为0，表示该DCI的格式为6-0B。或者区分调度PDSCH的DCI格式和调度PUSCH的DCI格式的标志位为0。表11中示出了第一比特为MCS域的情况，表12中示出了第一比特为MCS和资源分配域的全部比特或者部分比特的情况，表13中示出了第一比特为资源分配域的全部比特或者部分比特的情况。且第一比特，全为1。在第一DCI中，反馈指示比特包括2个比特，对应两个HARQ进程号，所述反馈指示比特的2个比特分别用于指示所述网络设备对所述2个HARQ进程对应的上行数据的肯定应答或者否定应答。Table 11 - Table 13 are a possible implementation manner of the first DCI and the second DCI in the embodiment of the present application. The first DCI Used to indicate a positive or negative response from the network device to the upstream data. The domain included in the first DCI may be the same as the domain included in the second DCI, or may be different from the domain included in the second DCI or have a different name. The number of bits of the second DCI is the same as the number of bits of the first DCI. The bits of the second DCI correspond to the bits of the first DCI. Table 11 - Table 13 shows the values of the bits of each field in the second DCI in the first DCI. The distinguishing flag bit of the DCI formats 6-0B and 6-1B is 0, indicating that the format of the DCI is 6-0B. Or distinguish between the DCI format for scheduling the PDSCH and the flag for the DCI format for scheduling the PUSCH to be 0. The case where the first bit is the MCS field is shown in Table 11, and the case where the first bit is the all bits or partial bits of the MCS and the resource allocation field is shown in Table 12, and the first bit is shown as a resource in Table 13. The case where all bits or partial bits of a domain are allocated. And the first bit, all ones. In the first DCI, the feedback indication bit includes 2 bits, corresponding to two HARQ process numbers, and the 2 bits of the feedback indication bit are respectively used to indicate the uplink data corresponding to the 2 HARQ processes by the network device. A positive response or a negative response.
表11至表13中该反馈指示比特可以为除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位之外的比特中的任意两个比特。例如，表11中反馈指示比特为资源块分配域中的高位和次高位，其中高位的1比特指示HARQ进程#0的上行数据的ACK反馈或NACK反馈，次高位的1比特指示HARQ进程#1的上行数据的ACK反馈或NACK反馈。表12中，反馈指示比特为重复次数指示域中的高位和次高位，其中高位的1比特指示HARQ进程#0的上行数据的ACK反馈或NACK反馈，次高位的1比特指示HARQ进程#1的上行数据的ACK反馈或NACK反馈。表13中，反馈指示比特为DCI子帧重复次数域中的高位和次高位，其中高位的1比特指示HARQ进程#0的上行数据的ACK反馈或NACK反馈，次高位的1比特指示HARQ进程#1的上行数据的ACK反馈或NACK反馈。应理解，表11至表13中，除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位以及所述反馈指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0。The feedback indication bits in Tables 11 to 13 may be a flag other than the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a downlink control information format for scheduling the physical uplink shared channel. Any two of the bits outside the bit. For example, the feedback indication bits in Table 11 are the upper and the next highest bits in the resource block allocation domain, where the upper 1 bit indicates the ACK feedback or the NACK feedback of the uplink data of the HARQ process #0, and the 1st bit of the next highest bit indicates the HARQ process #1. ACK feedback or NACK feedback of the uplink data. In Table 12, the feedback indication bit is the high order and the next highest bit in the repetition number indication field, wherein the upper 1 bit indicates the ACK feedback or the NACK feedback of the uplink data of the HARQ process #0, and the 1st bit of the next highest bit indicates the HARQ process #1. ACK feedback or NACK feedback of uplink data. In Table 13, the feedback indication bit is the upper and the next highest bit in the DCI subframe repetition number field, wherein the upper 1 bit indicates the ACK feedback or the NACK feedback of the uplink data of the HARQ process #0, and the 1st bit of the next highest bit indicates the HARQ process# 1 ACK feedback or NACK feedback of uplink data. It should be understood that, in Tables 11 to 13, except for the existing padding bits, the first bit, the downlink control information format for distinguishing the scheduled physical downlink shared channel, and the flag of the downlink control information format for scheduling the physical uplink shared channel, and In addition to the feedback indication bit, the remaining bits are reserved bits, or all values are 1, or all values are 0.
可选地，在一种实施方式中，DCI中的该其余比特取值都是‘1’。Optionally, in an embodiment, the remaining bits in the DCI take a value of '1'.
另一种实施方式中，DCI中的该其余比特取值都是‘0’。In another embodiment, the remaining bits in the DCI take a value of '0'.
需要说明的是，表11至13中，描述了，上述其余比特为保留比特，或者取值均为1，或者取值均为0的情况，但本申请实施例并不限于此。It should be noted that, in the foregoing Tables 11 to 13, the case where the remaining bits are reserved bits, or the value is all 1, or the value is 0, the embodiment of the present application is not limited thereto.
当第一DCI种的反馈比特反馈NACK时，本申请实施例中的第一DCI还可以用于调度终端设备重传该上行数据。因此，该第一下行控制信息还可以包括用于指示重传的上行数据的调度信息的比特，但本申请实施例对此不作限定。The first DCI in the embodiment of the present application may be used to schedule the terminal device to retransmit the uplink data, when the feedback bit of the first DCI is fed back to the NACK. Therefore, the first downlink control information may further include a bit for indicating scheduling information of the retransmitted uplink data, but the embodiment of the present application does not limit this.
也就是说，在本申请实施例中，第一DCI中除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、所述反馈指示比特以及用于指示重传的上行数据的调度信息的比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0，其中所述用于指示重传的上行数据的调度信息的比特包括用于指示以下至少一种信息的比特：That is, in the embodiment of the present application, the padding bits existing in the first DCI, the first bit, the downlink control information format used to distinguish the scheduled physical downlink shared channel, and the downlink control information for scheduling the physical uplink shared channel The flag of the format, the feedback indication bit, and the bit of the scheduling information for indicating the retransmitted uplink data, the remaining bits are reserved bits, or all values are 1, or the value is 0, wherein the The bits of the scheduling information for indicating the retransmitted uplink data include bits for indicating at least one of the following:
资源分配、调制编码方式、重复次数以及下行控制信息子帧重复次数。Resource allocation, modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
本申请实施例中，在第一DCI反馈NACK的情况下，还可以指示调度重传，避免了再次发送调度重传的DCI，能够节省信令开销。In the embodiment of the present application, when the first DCI is fed back to the NACK, the scheduling retransmission may be further indicated, and the DCI that schedules retransmission is avoided from being sent again, which can save signaling overhead.
网络设备将表11至表13中的DCI发送给终端设备之后，该终端设备可以首先确定该 DCI中的6-0B和6-1B的区分标志位或者区分调度PDSCH的DCI格式和调度PUSCH的DCI格式的标志位为0，再根据该第一比特均为1，确定该DCI为第一DCI，即用于反馈的DCI，最后，根据反馈指示比特对应的2比特指示，确定该网络设备分别对两个HARQ对应的上行数据的反馈是ACK或NACK。After the network device sends the DCI in Table 11 to Table 13 to the terminal device, the terminal device may first determine the The distinguishing flag bits of 6-0B and 6-1B in the DCI or the DCI format of the scheduling PDSCH and the DCI format of the scheduling PUSCH are 0, and then the DCI is determined to be the first DCI according to the first bit being 1. That is, the DCI used for the feedback, and finally, according to the 2-bit indication corresponding to the feedback indication bit, it is determined that the feedback of the uplink data corresponding to the two HARQs by the network device is ACK or NACK.
下面针对上述表1至表3所示的第二DCI包含的内容，结合表14至16描述第一DCI用于指示ACK或NACK时的比特取值情况。其中，表14至表16中包括反馈指示比特，且该反馈指示比特为多个比特，所述多个比特的取值均相同，对一个HARQ进程的上行数据进行反馈。The content of the bit value when the first DCI is used to indicate ACK or NACK is described below with reference to Tables 14 to 16 for the contents of the second DCI shown in Tables 1 to 3 above. The reference indication bits are included in the table 14 to the table, and the feedback indication bits are multiple bits, and the values of the multiple bits are the same, and the uplink data of one HARQ process is fed back.
表14Table 14
Figure PCTCN2017097272-appb-000029
Figure PCTCN2017097272-appb-000029
表15Table 15
Figure PCTCN2017097272-appb-000030
Figure PCTCN2017097272-appb-000030
表16Table 16
Figure PCTCN2017097272-appb-000031
Figure PCTCN2017097272-appb-000031
表14-表16为本申请实施例第一DCI和第二DCI的一种可能的实现方式。该第一DCI用于指示网络设备对上行数据的肯定应答或否定应答。第一DCI包含的域可以和第二DCI包含的域相同，也可以和第二DCI包含的域不同或具有不同的名称。第二DCI的比特个数和第一DCI的比特个数相同。第二DCI的比特和第一DCI的比特相对应。表14-表16示出了第二DCI中各域的比特在第一DCI中的取值。其中，DCI格式6-0B和6-1B的区分标志位为0，表示该DCI的格式为6-0B。或者区分调度PDSCH的DCI格式和调度PUSCH的DCI格式的标志位为0。表14中示出了第一比特为MCS域的情况，表15中示出了第一比特为MCS和资源分配域的全部比特或者部分比特的情况，表16中示出了第一比特为资源分配域的全部比特或者部分比特的情况。且第一比特，全为1。在第一DCI和第二DCI中，用于指示HARQ进程号的域包括1个HARQ进程号指示比特。在第一DCI中，反馈指示比特是除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位以及混合自动重传请求HARQ进程号指示比特之外的全部比特。可选的，所述反馈指示比特的取值均为1用于指示对所述上行数据的肯定应答；所述反馈指示比特的取值均为0用于指示对所述上行数据的否定应答。可选的，所述反馈指示比特的取值均为0用于指示对所述上行数据的肯定应答；所述反馈指示比特的取值均为1用于指示对所述上行数据的否定应答。所述反馈指示比特的个数大于1个，均用于指示对所述HARQ进程号指示比特所指示的HARQ进程对应的上行数据的肯定应答或者否定应答。所述反馈指示比特的各个比特的取值都相同。Table 14 - Table 16 is a possible implementation manner of the first DCI and the second DCI in the embodiment of the present application. The first DCI is used to indicate a positive or negative response of the network device to the uplink data. The domain included in the first DCI may be the same as the domain included in the second DCI, or may be different from the domain included in the second DCI or have a different name. The number of bits of the second DCI is the same as the number of bits of the first DCI. The bits of the second DCI correspond to the bits of the first DCI. Table 14 - Table 16 shows the values of the bits of each field in the second DCI in the first DCI. The distinguishing flag bit of the DCI formats 6-0B and 6-1B is 0, indicating that the format of the DCI is 6-0B. Or distinguish between the DCI format for scheduling the PDSCH and the flag for the DCI format for scheduling the PUSCH to be 0. The case where the first bit is the MCS field is shown in Table 14, and the case where the first bit is the all bits or partial bits of the MCS and the resource allocation field is shown in Table 15, and the first bit is shown as a resource in Table 16. The case where all bits or partial bits of a domain are allocated. And the first bit, all ones. In the first DCI and the second DCI, the field for indicating the HARQ process number includes one HARQ process number indication bit. In the first DCI, the feedback indication bit is a flag bit in addition to the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a downlink control information format for scheduling the physical uplink shared channel, and The hybrid automatic repeat request requests all bits except the HARQ process number indication bit. Optionally, the value of the feedback indication bit is 1 for indicating a positive response to the uplink data, and the value of the feedback indication bit is 0 for indicating a negative response to the uplink data. Optionally, the value of the feedback indication bit is 0 to indicate a positive response to the uplink data, and the value of the feedback indication bit is 1 to indicate a negative response to the uplink data. The number of the feedback indication bits is greater than one, and is used to indicate an acknowledgement or a negative response to the uplink data corresponding to the HARQ process indicated by the HARQ process number indication bit. The values of the respective bits of the feedback indication bit are the same.
网络设备将表14至表16中的DCI发送给终端设备之后，该终端设备可以首先确定该DCI中的6-0B和6-1B的区分标志位或者区分调度PDSCH的DCI格式和调度PUSCH的DCI格式的标志位为0，再根据该第一比特均为1，确定该DCI为第一DCI，即用于反馈的DCI，最后，根据反馈指示比特的指示，确定该网络设备反馈是ACK或NACK。After the network device sends the DCIs in Tables 14 to 16 to the terminal device, the terminal device may first determine the distinguishing flag bits of 6-0B and 6-1B in the DCI or distinguish the DCI format of the scheduled PDSCH and the DCI of the scheduled PUSCH. The flag of the format is 0, and according to the first bit is 1, the DCI is determined to be the first DCI, that is, the DCI used for feedback, and finally, according to the indication of the feedback indication bit, it is determined that the network device feedback is ACK or NACK. .
应注意，上述实施例的例子仅仅是为了帮助本领域技术人员理解本申请实施例，而非要将本申请实施例限于所例示的具体数值或具体场景。本领域技术人员根据上述给出的例 子，显然可以进行各种等价的修改或变化。例如，本申请实施例中上述表1至表16可以进行各种变形、拆分或组合，这样的修改或变化也落入本申请实施例的范围内。It should be noted that the examples of the above embodiments are only intended to help those skilled in the art to understand the embodiments of the present application, and the embodiments of the present application are not limited to the specific numerical values or specific examples illustrated. Those skilled in the art according to the examples given above It is obvious that various equivalent modifications or changes can be made. For example, the above-described Tables 1 to 16 in the embodiments of the present application may be variously modified, split, or combined, and such modifications or variations are also within the scope of the embodiments of the present application.
上文中结合图1至图2，详细描述了根据本申请实施例的数据传输方法，下面将结合图3至图5，详细描述根据本申请实施例的数据传输装置。The data transmission method according to the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 2, and the data transmission apparatus according to the embodiment of the present application will be described in detail below with reference to FIG. 3 to FIG.
图3为本申请实施例提供的一种终端设备的结构示意图。该终端设备可适用于图1所示出的系统中。为了便于说明，图3仅示出了终端设备的主要部件。如图3所示，终端设备10包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端设备进行控制，执行软件程序，处理软件程序的数据，例如用于支持终端设备执行上述方法实施例中所描述的动作，如，基于接收的下行控制信息DCI确定上行数据的反馈状态。存储器主要用于存储软件程序和数据。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器，主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。FIG. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure. The terminal device can be adapted for use in the system shown in FIG. For the convenience of explanation, FIG. 3 shows only the main components of the terminal device. As shown in FIG. 3, the terminal device 10 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The processor is mainly used for processing the communication protocol and the communication data, and controlling the entire terminal device, executing the software program, and processing the data of the software program, for example, for supporting the terminal device to perform the actions described in the foregoing method embodiments, such as And determining, according to the received downlink control information DCI, a feedback state of the uplink data. Memory is primarily used to store software programs and data. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The control circuit together with the antenna can also be called a transceiver, and is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user.
当终端设备开机后，处理器可以读取存储单元中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。After the terminal device is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When the data needs to be transmitted by wireless, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves. When data is transmitted to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
本领域技术人员可以理解，为了便于说明，图3仅示出了一个存储器和处理器。在实际的终端设备中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本申请实施例对此不做限制。Those skilled in the art will appreciate that FIG. 3 shows only one memory and processor for ease of illustration. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like.
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图3中的处理器可以集成基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。As an optional implementation manner, the processor may include a baseband processor and a central processing unit, and the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control and execute the entire terminal device. A software program that processes data from a software program. The processor in FIG. 3 can integrate the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit can also be independent processors and interconnected by technologies such as a bus. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network standards, and the terminal device may include a plurality of central processors to enhance its processing capabilities, and various components of the terminal devices may be connected through various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The functions of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
在发明实施例中，可以将具有收发功能的天线和控制电路视为终端设备10的收发单元101，例如，用于支持终端设备执行如图2部分所述的接收功能。将具有处理功能的处理器视为终端设备10的处理单元102。如图3所示，终端设备10包括收发单元101和处理单元102。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元101中用于实现接收功能的器件视为接收单元，将收发单元101中用于实现发送功能的器件视为发送单元，即收发单元101包括接收单元和发送单元，接收单元也可以称为接收机、输入口、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。 In an embodiment of the invention, the antenna and control circuitry having the transceiving function can be considered as the transceiving unit 101 of the terminal device 10, for example, for supporting the terminal device to perform the receiving function as described in the portion of FIG. The processor having the processing function is regarded as the processing unit 102 of the terminal device 10. As shown in FIG. 3, the terminal device 10 includes a transceiver unit 101 and a processing unit 102. The transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver, and the like. Optionally, the device for implementing the receiving function in the transceiver unit 101 can be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 101 is regarded as a sending unit, that is, the transceiver unit 101 includes a receiving unit and a sending unit. The receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit or the like.
处理器102可用于执行该存储器存储的指令，以控制收发单元101接收信号和/或发送信号，完成上述方法实施例中终端设备的功能。作为一种实现方式，收发单元101的功能可以考虑通过收发电路或者收发的专用芯片实现。The processor 102 can be configured to execute instructions stored in the memory to control the transceiver unit 101 to receive signals and/or transmit signals to perform the functions of the terminal device in the foregoing method embodiments. As an implementation manner, the function of the transceiver unit 101 can be implemented by a dedicated chip through a transceiver circuit or a transceiver.
图4为本申请实施例提供的一种网络设备的结构示意图，如可以为基站的结构示意图。如图4所示，该基站可应用于如图1所示的系统中，执行上述方法实施例中网络设备的功能。基站20包括一个或多个射频单元，如远端射频单元(remote radio unit,RRU)201和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)202。所述RRU201可以称为收发单元、收发机、收发电路、或者收发器等等，其可以包括至少一个天线2011和射频单元2012。所述RRU201部分主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于向终端设备发送DCI。所述BBU202部分主要用于进行基带处理，对基站进行控制等。所述RRU201与BBU202可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。FIG. 4 is a schematic structural diagram of a network device according to an embodiment of the present disclosure, which may be a schematic structural diagram of a base station. As shown in FIG. 4, the base station can be applied to the system shown in FIG. 1 to perform the functions of the network device in the foregoing method embodiment. The base station 20 includes one or more radio frequency units, such as a remote radio unit (RRU) 201 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 202. . The RRU 201 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 2011 and a radio frequency unit 2012. The RRU 201 part is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for transmitting DCI to a terminal device. The BBU 202 part is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 201 and the BBU 202 may be physically disposed together or physically separated, that is, distributed base stations.
所述BBU202为基站的控制中心，也可以称为处理单元，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如所述BBU(处理单元)可以用于控制基站执行上述方法实施例中关于网络设备的操作流程。The BBU 202 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spread spectrum, and the like. For example, the BBU (processing unit) can be used to control the base station to perform an operation procedure about the network device in the foregoing method embodiment.
在一个示例中，所述BBU202可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述BBU202还包括存储器2021和处理器2022。所述存储器2021用以存储必要的指令和数据。例如存储器2021存储上述实施例中的指示信息与组合信息的对应关系等。所述处理器2022用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中关于网络设备的操作流程。所述存储器2021和处理器2022可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。In an example, the BBU 202 may be composed of one or more boards, and multiple boards may jointly support a single access standard radio access network (such as an LTE network), or may separately support different access modes of wireless. Access network (such as LTE network, 5G network or other network). The BBU 202 also includes a memory 2021 and a processor 2022. The memory 2021 is used to store necessary instructions and data. For example, the memory 2021 stores the correspondence relationship between the indication information and the combination information in the above embodiment and the like. The processor 2022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform an operation procedure about the network device in the foregoing method embodiment. The memory 2021 and the processor 2022 can serve one or more boards. That is, the memory and processor can be individually set on each board. It is also possible that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.
图5给出了一种通信装置500的结构示意图，装置500可用于实现上述方法实施例中描述的方法，可以参见上述方法实施例中的说明。所述通信装置500可以是芯片，网络设备(如基站)，终端设备或者其他网络设备等。FIG. 5 is a schematic structural diagram of a communication device 500. The device 500 can be used to implement the method described in the foregoing method embodiments. For details, refer to the description in the foregoing method embodiments. The communication device 500 can be a chip, a network device (such as a base station), a terminal device or other network device, and the like.
所述通信装置500包括一个或多个处理器501。所述处理器501可以是通用处理器或者专用处理器等。例如可以是基带处理器、或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、终端、或芯片等)进行控制，执行软件程序，处理软件程序的数据。所述通信装置可以包括收发单元，用以实现信号的输入(接收)和输出(发送)。例如，通信装置可以为芯片，所述收发单元可以是芯片的输入和/或输出电路，或者通信接口。所述芯片可以用于终端或基站或其他网络设备。又如，通信装置可以为终端或基站或其他网络设备，所述收发单元可以为收发器，射频芯片等。The communication device 500 includes one or more processors 501. The processor 501 can be a general purpose processor or a dedicated processor or the like. For example, it can be a baseband processor, or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processor can be used to control communication devices (eg, base stations, terminals, or chips, etc.), execute software programs, and process data of the software programs. The communication device may include a transceiver unit for implementing input (reception) and output (transmission) of signals. For example, the communication device can be a chip, and the transceiver unit can be an input and/or output circuit of the chip, or a communication interface. The chip can be used for a terminal or base station or other network device. For another example, the communication device may be a terminal or a base station or other network device, and the transceiver unit may be a transceiver, a radio frequency chip, or the like.
所述通信装置500包括一个或多个所述处理器501，所述一个或多个处理器501可实现图2所示各实施例中网络设备或者终端设备的方法。The communication device 500 includes one or more of the processors 501, and the one or more processors 501 can implement the method of the network device or the terminal device in the embodiments shown in FIG. 2.
在一种可能的设计中，所述通信装置500包括用于生成下行控制信息DCI的部件(means)，以及用于发送DCI的部件(means)。可以通过一个或多个处理器来实现所述生成DCI的means以及发送DCI的means的功能。例如可以通过一个或多个处理器生成所 述DCI,通过收发器、或输入/输出电路、或芯片的接口发送所述DCI。该DCI可以参见上述方法实施例中的相关描述In one possible design, the communication device 500 includes means for generating downlink control information DCI, and means for transmitting DCI. The function of generating the DCI and the function of transmitting the DCI may be implemented by one or more processors. For example, one or more processors can be generated The DCI is transmitted through a transceiver, or an input/output circuit, or an interface of a chip. For the DCI, refer to the related description in the foregoing method embodiment.
在一种可能的设计中，所述通信装置500包括用于接收下行控制信息DCI的部件(means)以及用于根据DCI确定上行数据的反馈状态的部件。所述DCI以及如何确定上行数据的接收状态参见上述方法实施例中的相关描述。例如可以通过收发器、或输入/输出电路、或芯片的接口接收所述DCI，通过一个或多个处理器基于所述DCI确定上行数据的接收状态。In one possible design, the communication device 500 includes means for receiving downlink control information DCI and means for determining a feedback status of the uplink data based on the DCI. The DCI and how to determine the receiving state of the uplink data are described in the related description in the foregoing method embodiments. The DCI may be received, for example, by a transceiver, or an input/output circuit, or an interface of a chip, and the reception status of the uplink data is determined based on the DCI by one or more processors.
可选的，处理器501除了实现图2所示各实施例的方法，还可以实现其他功能。Optionally, the processor 501 can implement other functions in addition to the methods of the embodiments shown in FIG. 2 .
可选的，一种设计中，处理器501也可以包括指令503，所述指令可以在所述处理器上被运行，使得所述通信装置500执行上述方法实施例中描述的方法。Alternatively, in one design, the processor 501 may also include instructions 503 that may be executed on the processor such that the communication device 500 performs the methods described in the above method embodiments.
在又一种可能的设计中，通信装置500也可以包括电路，所述电路可以实现前述方法实施例中的功能。In yet another possible design, the communication device 500 can also include circuitry that can implement the functions of the foregoing method embodiments.
在又一种可能的设计中所述通信装置500中可以包括一个或多个存储器502，其上存有指令504，所述指令可在所述处理器上被运行，使得所述通信装置500执行上述方法实施例中描述的方法。可选的，所述存储器中还可以存储有数据。可选的处理器中也可以存储指令和/或数据。所述处理器和存储器可以单独设置，也可以集成在一起。In yet another possible design, the communication device 500 can include one or more memories 502 having instructions 504 stored thereon that can be executed on the processor such that the communication device 500 executes The method described in the above method embodiments. Optionally, data may also be stored in the memory. Instructions and/or data can also be stored in the optional processor. The processor and the memory may be provided separately or integrated.
在又一种可能的设计中，所述通信装置500还可以包括收发单元505以及天线506。所述处理器501可以称为处理单元，对通信装置(终端或者基站)进行控制。所述收发单元505可以称为收发机、收发电路、或者收发器等，用于通过天线506实现通信装置的收发功能。In yet another possible design, the communication device 500 may further include a transceiver unit 505 and an antenna 506. The processor 501 may be referred to as a processing unit to control a communication device (terminal or base station). The transceiver unit 505 can be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., for implementing the transceiver function of the communication device through the antenna 506.
本申请实施例还提供一种通信系统，其包括前述的网络设备和一个或多于一个终端设备。The embodiment of the present application further provides a communication system including the foregoing network device and one or more terminal devices.
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。It should be understood that, in the embodiment of the present application, the processor may be a central processing unit ("CPU"), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration. Circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
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。The memory can include read only memory and random access memory and provides instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory.
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。The bus system may include a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, the various buses are labeled as bus systems in the figure.
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。In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.
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，并不用来限制本申请实施例的范围。 It is also to be understood that the first, second, third, fourth, and various reference numerals are in the
应理解，本文中术语“和/或”，仅仅是一种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。It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone.
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. The implementation process constitutes any limitation.
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申请的范围。Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. achieve. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
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。A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.
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。In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
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。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, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
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。In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
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(程序)。在计算机上加载和执行所述计算机程序指令(程序)时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包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。In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)) or the like.
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。 The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims (27)

  1. 一种数据传输方法，其特征在于，包括：A data transmission method, comprising:
    网络设备接收终端设备发送的上行数据；The network device receives uplink data sent by the terminal device;
    所述网络设备向所述终端设备发送第一下行控制信息，所述第一下行控制信息的第一比特的取值均为1，所述第一比特的个数大于或等于1，所述第一比特用于表示所述第一下行控制信息用于指示所述网络设备对所述上行数据的肯定应答或者否定应答。The network device sends the first downlink control information to the terminal device, where the first bit of the first downlink control information has a value of 1, and the number of the first bits is greater than or equal to 1, The first bit is used to indicate that the first downlink control information is used to indicate that the network device acknowledges or negatively responds to the uplink data.
  2. 一种数据传输方法，其特征在于，包括：A data transmission method, comprising:
    终端设备向网络设备发送上行数据；The terminal device sends uplink data to the network device;
    所述终端设备接收所述网络设备发送的第一下行控制信息，所述第一下行控制信息的第一比特的取值为1，所述第一比特的个数大于或等于1，且所述第一比特用于表示所述第一下行控制信息用于指示所述网络设备对所述上行数据的肯定应答或者否定应答。Receiving, by the terminal device, the first downlink control information that is sent by the network device, where the first bit of the first downlink control information has a value of 1, and the number of the first bits is greater than or equal to 1, and The first bit is used to indicate that the first downlink control information is used to indicate that the network device acknowledges or negatively responds to the uplink data.
  3. 一种数据传输装置，其特征在于，包括：A data transmission device, comprising:
    接收单元，用于接收终端设备发送的上行数据；a receiving unit, configured to receive uplink data sent by the terminal device;
    发送单元，用于向所述终端设备发送第一下行控制信息，所述第一下行控制信息的第一比特的取值为1，所述第一比特的个数大于或等于1，且所述第一比特用于表示所述第一下行控制信息用于指示所述网络设备对所述上行数据的肯定应答或者否定应答。a sending unit, configured to send the first downlink control information to the terminal device, where the first bit of the first downlink control information has a value of 1, and the number of the first bits is greater than or equal to 1, and The first bit is used to indicate that the first downlink control information is used to indicate that the network device acknowledges or negatively responds to the uplink data.
  4. 一种数据传输装置，其特征在于，包括：A data transmission device, comprising:
    发送单元，用于向网络设备发送上行数据；a sending unit, configured to send uplink data to the network device;
    接收单元，用于接收所述网络设备发送的第一下行控制信息，所述第一下行控制信息的第一比特的取值为1，所述第一比特的个数大于或等于1，且所述第一比特用于表示所述第一下行控制信息用于指示所述网络设备对所述上行数据的肯定应答或者否定应答。a receiving unit, configured to receive the first downlink control information that is sent by the network device, where the first bit of the first downlink control information has a value of 1, and the number of the first bits is greater than or equal to 1, And the first bit is used to indicate that the first downlink control information is used to indicate that the network device acknowledges or negatively responds to the uplink data.
  5. 根据权利要求1或2所述的方法，或者，权利要求3或4所述的装置，其特征在于，所述第一下行控制信息只用于指示对所述上行数据的肯定应答，所述第一下行控制信息还包括混合自动重传请求HARQ进程号指示比特，所述HARQ进程号指示比特用于指示所述上行数据对应的HARQ进程。The method according to claim 1 or 2, or the device according to claim 3 or 4, wherein the first downlink control information is only used to indicate an acknowledgement of the uplink data, The first downlink control information further includes a hybrid automatic repeat request HARQ process number indication bit, where the HARQ process number indication bit is used to indicate the HARQ process corresponding to the uplink data.
  6. 根据权利要求5所述的方法，或者，权利要求5所述的装置，其特征在于，在所述第一下行控制信息的比特中，除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位及所述HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0。The method according to claim 5, or the apparatus according to claim 5, wherein in the bits of the first downlink control information, in addition to the existing padding bits, the first bit, Differentiating the downlink control information format for scheduling the physical downlink shared channel and the flag of the downlink control information format for scheduling the physical uplink shared channel and the HARQ process number indication bit, the remaining bits are reserved bits, or all values are 1, or The value is 0.
  7. 根据权利要求1或2所述的方法，或者，权利要求3或4所述的装置，其特征在于，所述第一下行控制信息还包括反馈指示比特，所述反馈指示比特用于指示所述网络设备对所述上行数据的肯定应答或者否定应答。The method according to claim 1 or 2, or the device according to claim 3 or 4, wherein the first downlink control information further comprises a feedback indication bit, and the feedback indication bit is used to indicate the location A positive or negative response of the network device to the uplink data.
  8. 根据权利要求7所述的方法，或者，权利要求7所述的装置，其特征在于，所述上行数据包括N个HARQ进程对应的上行数据，所述反馈指示比特的个数为N，且所述反馈指示比特的N个比特分别用于指示所述网络设备对所述N个HARQ进程对应的上行数据的肯定应答或者否定应答，N为大于1的整数。 The method according to claim 7, or the device according to claim 7, wherein the uplink data comprises uplink data corresponding to N HARQ processes, and the number of the feedback indication bits is N, and The N bits of the feedback indication bit are respectively used to indicate an acknowledgement or a negative response of the network device to the uplink data corresponding to the N HARQ processes, where N is an integer greater than 1.
  9. 根据权利要求7或8所述的方法，或者，权利要求7或8所述的装置，其特征在于，在所述第一下行控制信息中，The method according to claim 7 or 8, or the device according to claim 7 or 8, wherein in the first downlink control information,
    除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位以及所述反馈指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0；或The remaining bits are included in addition to the padding bits, the first bit, the downlink control information format for scheduling the physical downlink shared channel, and the flag of the downlink control information format for scheduling the physical uplink shared channel, and the feedback indication bit. Is a reserved bit, or a value of 1, or a value of 0; or
    除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、所述反馈指示比特以及用于指示重传的上行数据的调度信息的比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0，其中所述用于指示重传的上行数据的调度信息的比特包括用于指示以下至少一种信息的比特：In addition to the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel, the feedback indication bit, and the indication bit In addition to the bits of the scheduling information of the transmitted uplink data, the remaining bits are reserved bits, or all of the values are 1, or all values are 0, wherein the bits for indicating the scheduling information of the retransmitted uplink data include A bit indicating at least one of the following information:
    资源分配、调制编码方式、重复次数以及下行控制信息子帧重复次数。Resource allocation, modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
  10. 根据权利要求8或9所述的方法，或者，权利要求8或9所述的装置，其特征在于，所述N等于2。A method according to claim 8 or 9, or a device according to claim 8 or 9, wherein said N is equal to two.
  11. 根据权利要求7所述的方法，或者，权利要求7所述的装置，其特征在于，所述反馈指示比特的个数为1，所述第一下行控制信息还包括HARQ进程号指示比特，所述HARQ进程号指示比特用于指示所述上行数据对应的HARQ进程。The method according to claim 7, or the device according to claim 7, wherein the number of the feedback indication bits is 1, and the first downlink control information further includes a HARQ process number indication bit, The HARQ process number indication bit is used to indicate a HARQ process corresponding to the uplink data.
  12. 根据权利要求11所述的方法，或者，权利要求11所述的装置，其特征在于，在所述第一下行控制信息的比特中，The method according to claim 11, or the device according to claim 11, wherein in the bits of the first downlink control information,
    除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、所述反馈指示比特以及所述HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0；或a flag bit, a first control bit, a downlink control information format for scheduling a physical downlink shared channel, and a downlink control information format for scheduling a physical uplink shared channel, the feedback indication bit, and the HARQ process. In addition to the number indication bit, the remaining bits are reserved bits, or all values are 1, or the value is 0; or
    除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位、所述反馈指示比特、用于指示重传的上行数据的调度信息的比特以及所述HARQ进程号指示比特之外，其余比特是保留比特，或者取值均为1，或者取值均为0，其中，所述用于指示重传的上行数据的调度信息的比特包括用于指示以下至少一种信息的比特：In addition to the existing padding bits, the first bit, a downlink control information format for distinguishing the scheduled physical downlink shared channel, and a flag bit for scheduling the downlink control information format of the physical uplink shared channel, the feedback indication bit, for indicating The bits of the scheduling information of the transmitted uplink data and the HARQ process number indication bits, the remaining bits are reserved bits, or all values are 1, or all values are 0, wherein the information is used to indicate retransmission. The bits of the scheduling information of the uplink data include bits for indicating at least one of the following:
    资源分配、调制编码方式、重复次数以及下行控制信息子帧重复次数。Resource allocation, modulation and coding mode, number of repetitions, and number of sub-frame repetitions of downlink control information.
  13. 根据权利要求7所述的方法，或者，权利要求7所述的装置，其特征在于，所述反馈指示比特是在所述第一下行控制信息的比特中，除存在的填充比特、所述第一比特、用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位以及混合自动重传请求HARQ进程号指示比特之外的多个比特；其中，所述HARQ进程号指示比特用于指示所述上行数据对应的HARQ进程；所述反馈指示比特的取值均为1用于指示对所述上行数据的肯定应答；所述反馈指示比特的取值均为0用于指示对所述上行数据的否定肯定应答。The method according to claim 7, or the apparatus according to claim 7, wherein the feedback indication bit is in a bit of the first downlink control information, except for a padding bit that exists, a first bit, a flag for determining a downlink control information format for scheduling the physical downlink shared channel, and a flag for scheduling a downlink control information format of the physical uplink shared channel, and a plurality of bits other than the hybrid automatic repeat request HARQ process number indication bit; And the HARQ process number indication bit is used to indicate the HARQ process corresponding to the uplink data; the value of the feedback indication bit is 1 for indicating an acknowledgement to the uplink data; A value of 0 is used to indicate a negative acknowledgment of the upstream data.
  14. 根据权利要求1或5-13中任一项所述的方法，其特征在于，在所述网络设备接收终端设备发送的上行数据之前，所述方法还包括：The method according to any one of claims 1 to 5, wherein before the network device receives the uplink data sent by the terminal device, the method further includes:
    所述网络设备向所述终端设备发送第二下行控制信息，在所述第二下行控制信息的第一比特中，至少一个比特的取值是0，所述第二下行控制信息用于所述网络设备调度物理 上行共享信道；The network device sends the second downlink control information to the terminal device, where the value of the at least one bit is 0 in the first bit of the second downlink control information, and the second downlink control information is used in the Network device scheduling physics Uplink shared channel;
    其中，所述网络设备接收终端设备发送的上行数据，包括：The network device receives the uplink data sent by the terminal device, including:
    所述网络设备接收所述终端设备根据所述第二下行控制信息发送的所述上行数据。The network device receives the uplink data that is sent by the terminal device according to the second downlink control information.
  15. 根据权利要求2或5-13中任一项所述的方法，其特征在于，在所述终端设备向网络设备发送上行数据之前，所述方法还包括：The method according to any one of claims 2 to 5, wherein before the terminal device sends the uplink data to the network device, the method further includes:
    所述终端设备接收所述网络设备发送的第二下行控制信息，在所述第二下行控制信息的第一比特中，至少一个比特的取值是0，所述第二下行控制信息用于调度物理上行共享信道；Receiving, by the terminal device, the second downlink control information that is sent by the network device, where the value of the at least one bit is 0 in the first bit of the second downlink control information, and the second downlink control information is used for scheduling Physical uplink shared channel;
    所述终端设备向网络设备发送上行数据，包括：The terminal device sends uplink data to the network device, including:
    所述终端设备根据所述第二下行控制信息，向所述网络设备发送所述上行数据。The terminal device sends the uplink data to the network device according to the second downlink control information.
  16. 根据权利要求3或5-13中任一项所述的装置，其特征在于，所述发送单元还用于：The apparatus according to any one of claims 3 or 5 to 13, wherein the transmitting unit is further configured to:
    在所述接收终端设备发送的上行数据之前，向所述终端设备发送第二下行控制信息，在所述第二下行控制信息的第一比特中，至少一个比特的取值是0，所述第二下行控制信息用于调度物理上行共享信道；Before the receiving the uplink data sent by the terminal device, sending, by the terminal device, second downlink control information, where at least one bit of the first bit of the second downlink control information is 0, the first The second downlink control information is used to schedule a physical uplink shared channel;
    所述接收单元具体用于：The receiving unit is specifically configured to:
    接收所述终端设备根据所述第二下行控制信息发送的所述上行数据。Receiving, by the terminal device, the uplink data that is sent according to the second downlink control information.
  17. 根据权利要求4或5-13中任一项所述的装置，其特征在于，所述发送单元还用于：The apparatus according to any one of claims 4 or 5 to 13, wherein the transmitting unit is further configured to:
    在所述向网络设备发送上行数据之前，接收所述网络设备发送的第二下行控制信息，在所述第二下行控制信息的第一比特中，存在至少一个比特的取值是0，所述第二下行控制信息用于调度物理上行共享信道；Receiving, by the network device, the second downlink control information that is sent by the network device, where the value of the at least one bit is 0 in the first bit of the second downlink control information, The second downlink control information is used to schedule a physical uplink shared channel;
    所述发送单元具体用于：The sending unit is specifically configured to:
    根据所述第二下行控制信息，向所述网络设备发送所述上行数据。And transmitting, according to the second downlink control information, the uplink data to the network device.
  18. 根据权利要求14或15所述的方法，或者，权利要求16或17所述的装置，其特征在于，A method according to claim 14 or 15, or a device according to claim 16 or 17, wherein
    所述第一下行控制信息的比特数与所述第二下行控制信息的比特数相等，且所述第一下行控制信息的第一比特的位置与所述第二下行控制信息的第一比特的位置相同；和/或，所述第一下行控制信息与所述第二下行控制信息的格式相同。The number of bits of the first downlink control information is equal to the number of bits of the second downlink control information, and the location of the first bit of the first downlink control information and the first of the second downlink control information The positions of the bits are the same; and/or, the first downlink control information is the same as the format of the second downlink control information.
  19. 根据权利要求14-15或18中任一项所述的方法，或者，权利要求16-18中任一项所述的装置，其特征在于，The method of any of claims 14-15 or 18, or the device of any of claims 16-18, wherein
    所述第二下行控制信息的第一比特为用于指示调制编码方式的比特；和/或，The first bit of the second downlink control information is a bit used to indicate a modulation and coding mode; and/or,
    所述第一比特的个数为4。The number of the first bits is 4.
  20. 根据权利要求14-15或18中任一项所述的方法，或者，权利要求16-18中任一项所述的装置，其特征在于，The method of any of claims 14-15 or 18, or the device of any of claims 16-18, wherein
    所述第二下行控制信息的第一比特为用于指示资源分配的域的全部比特或者部分比特；或，The first bit of the second downlink control information is all bits or partial bits of the domain used to indicate resource allocation; or
    所述第二下行控制信息的第一比特为用于指示资源分配和调制编码方式的域的全部比特或者部分比特。 The first bit of the second downlink control information is all bits or partial bits of a field for indicating resource allocation and modulation and coding mode.
  21. 根据权利要求20所述的方法，或者，权利要求20所述的装置，其特征在于，The method of claim 20, or the apparatus of claim 20, wherein
    所述第二下行控制信息的第一比特第一取值状态指示的物理上行共享信道的资源是小于12个子载波的资源。The resource of the physical uplink shared channel indicated by the first bit first state of the second downlink control information is a resource of less than 12 subcarriers.
  22. 根据权利要求20或21所述的方法，或者，权利要求20或21所述的装置，其特征在于，The method according to claim 20 or 21, or the device according to claim 20 or 21, characterized in that
    所述第一比特的个数为9或11；或，The number of the first bits is 9 or 11; or,
    所述第一比特的个数大于
    Figure PCTCN2017097272-appb-100001
    或，    The number of the first bits is greater than
    Figure PCTCN2017097272-appb-100001
    or,
    所述第一比特的个数为
    Figure PCTCN2017097272-appb-100002
    其中，
    Figure PCTCN2017097272-appb-100003
    表示上行系统带宽中包含的物理资源块的个数。    The number of the first bits is
    Figure PCTCN2017097272-appb-100002
    among them,
    Figure PCTCN2017097272-appb-100003
    Indicates the number of physical resource blocks included in the uplink system bandwidth.
  23. 根据权利要求1-2，或5-15，或18-22中任一项所述的方法，或者，权利要求3-13，或16-22中任一项所述的装置，其特征在于，在所述第一下行控制信息的比特中，用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位取值为0。The apparatus of any one of claims 1-2, or 5-15, or 18-22, or the apparatus of any of claims 3-13, or 16-22, wherein The flag of the downlink control information format for scheduling the physical downlink shared channel and the downlink control information format for scheduling the physical uplink shared channel are 0 in the bit of the first downlink control information.
  24. 根据权利要求23所述的方法，或者，权利要求23所述的装置，其特征在于，所述用于区分调度物理下行共享信道的下行控制信息格式和调度物理上行共享信道的下行控制信息格式的标志位是区分控制信息格式6-0B和控制信息格式6-1B的标志位。The method according to claim 23, or the device according to claim 23, wherein the downlink control information format for scheduling the physical downlink shared channel and the downlink control information format for scheduling the physical uplink shared channel are The flag bit is a flag bit that distinguishes the control information format 6-0B from the control information format 6-1B.
  25. 根据权利要求1-2，或5-15，或18-24中任一项所述的方法，或者，权利要求3-13，或16-24中任一项所述的装置，其特征在于，所述第一下行控制信息的格式为6-0B。The apparatus of any of claims 1-2, or 5-15, or 18-24, or the apparatus of any of claims 3-13, or 16-24, wherein The format of the first downlink control information is 6-0B.
  26. 一种计算机可读存储介质，其特征在于，包括计算机程序，当其在计算机上运行时，使得计算机执行如权利要求1-2，或5-15，或18-25中任一项所述的方法。A computer readable storage medium, comprising a computer program, when executed on a computer, causing the computer to perform the method of any one of claims 1-2, or 5-15, or 18-25 method.
  27. 一种包含指令的计算机程序产品，当所述指令在计算机上运行时，使得所述计算机执行如权利要求1-2，或5-15，或18-25中任一项所述的方法。 A computer program product comprising instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1-2, or 5-15, or 18-25.
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