WO2019029639A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2019029639A1
WO2019029639A1 PCT/CN2018/099705 CN2018099705W WO2019029639A1 WO 2019029639 A1 WO2019029639 A1 WO 2019029639A1 CN 2018099705 W CN2018099705 W CN 2018099705W WO 2019029639 A1 WO2019029639 A1 WO 2019029639A1
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Prior art keywords
dci
information
codeword
scheduling
resource
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PCT/CN2018/099705
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English (en)
French (fr)
Inventor
任海豹
祝慧颖
梁津垚
李元杰
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华为技术有限公司
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Priority to EP18842875.9A priority Critical patent/EP3664546A4/en
Publication of WO2019029639A1 publication Critical patent/WO2019029639A1/zh
Priority to US16/786,592 priority patent/US11528099B2/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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H04L1/0637—Properties of the code
    • H04L1/0643—Properties of the code block codes
    • 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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1893—Physical mapping arrangements
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes

Definitions

  • the present application relates to the field of communications and, more particularly, to communication methods and communication devices in the field of communications.
  • the 5G new radio (NR) system supports the scheduling information of only one codeword in the downlink control information (DCI) corresponding to the physical downlink shared channel (PDSCH).
  • the DCI is called a single codeword DCI.
  • the terminal device for coordinated multiple points (CoMP), if the terminal device is configured with four or fewer receiving antennas, up to four data streams can be transmitted, and therefore, the maximum transmission codeword is one.
  • the terminal equipment can simultaneously transmit no more than four data streams, so the corresponding single use can be used.
  • the codeword DCI performs corresponding downlink data scheduling.
  • the NR system uses only one codeword (ie, CW0 or CW1) by default, and accordingly only uses the HARQ buffer corresponding to the single codeword.
  • the UE has the transmission or reception capability of two codewords, and the corresponding UE supports the HARQ buffer of two codewords. How to make full use of the UE's HARQ buffer capability has become an urgent problem to be solved.
  • the application provides a communication method and a communication device, which can improve the utilization rate of the HARQ cache.
  • a communication method comprising:
  • the DCI includes indication information for indicating a single codeword of the DCI scheduling, or a single codeword of the DCI scheduling has a corresponding relationship with a first resource, or the DCI includes a first number of the hybrid automatic repeat request HARQ process corresponding to the single codeword of the DCI scheduling, where the number of the first number is greater than any one of the DCIs for scheduling two codewords The number of values of the second number of the HARQ process used;
  • the DCI is sent to the terminal device.
  • any codeword may refer to each codeword, and may also refer to one of the codewords.
  • the utilization of the HARQ cache can be further improved.
  • a communication method including:
  • DCI Downlink control information DCI from the network device, where the DCI includes indication information for indicating a single codeword of the DCI scheduling, or the single codeword of the DCI scheduling has a corresponding relationship with the first resource, or
  • the DCI includes a first number of a hybrid automatic repeat request HARQ process corresponding to a single codeword scheduled by the DCI, where the number of the first number is greater than the DCI used to schedule two codewords. The number of the second number of the HARQ process used by any codeword;
  • the network device may send, to the terminal device, a first DCI for indicating scheduling CW0 and a second DCI for indicating scheduling CW1, or may also send a third DCI for indicating scheduling of other codewords, which may cause the terminal to Two or more codewords are scheduled between the device and the network device by transmitting a single codeword DCI.
  • the DCI further includes modulation and coding policy information corresponding to the single codeword, new data indication information, redundancy version information, precoding and transport layer indication information, transport block group CBG indication information, and rank RI indication information. , or, at least one of the resource allocation information.
  • downlink data scheduling and uplink data scheduling can be performed by using a single codeword DCI, which can reduce the overhead of DCI.
  • the reliability of the transmission of the DCI can be improved under the premise that the control channel uses the same physical time-frequency resource overhead.
  • the indication information is joint coding information, where the joint coding information is further used to indicate at least one other information in the DCI except the indication information, where the other at least one information is: At least one of: modulation coding policy information, new data indication information, redundancy version information, precoding and transmission layer indication information, coding block group CBG indication information, rank RI indication information, or resource allocation information.
  • bit coding overhead of the DCI can be saved by means of joint coding.
  • the first resource is a resource used to transmit a downlink control channel PDCCH of the DCI.
  • the first resource is a scrambling resource for scrambling a PDCCH that transmits the single codeword DCI.
  • the first resource is related to a downlink control channel PDCCH used for transmitting the DCI.
  • the scrambling resource is used to scramble the control channel, for example, a cell radio network temporary identifier (C-RNTI).
  • C-RNTI can be used to scramble the cyclic redundancy check (CRC) of the control channel or the data channel.
  • CRC cyclic redundancy check
  • the CRC is used to scramble the CRC of the control channel.
  • the first resource having a corresponding relationship with the single codeword scheduled by the DCI, it may implicitly indicate which codeword the DCI is scheduled. In this way, the bit overhead of DCI can be reduced and signaling overhead is saved.
  • the value range of the second number is a true subset of the value range of the first number.
  • the number of HARQ processes used by a single codeword scheduled by the single codeword DCI is equal to the sum of the number of HARQs used by all codewords in the dual codeword DCI.
  • the HARQ process of the two codewords in the DCI of the dual codeword is renumbered to form a HARQ process corresponding to the single codeword DCI.
  • the network device sends downlink data to the terminal device according to the DCI.
  • the terminal device sends an ACK or a NACK corresponding to the data corresponding to the single codeword scheduled by the DCI to the network device.
  • a HARQ process can only process one transport block (TB) in the same Transmission Time Interval (TTI).
  • TTI refers to a time unit in which a single scheduled transmission continues, and may be a slot, a mini-slot, a subframe, a symbol, multiple symbols, or multiple aggregated time slots, etc., the present application. No restrictions.
  • the terminal device sends the uplink data to the network device according to the DCI.
  • the network device sends an ACK or a NACK corresponding to the data corresponding to the single codeword scheduled by the DCI to the terminal device.
  • the terminal when the uplink data or the downlink data is scheduled by using the DCI, the terminal can indirectly or directly indicate the information of the single codeword scheduled by the DCI, so that the terminal can use different codewords for data transmission. Or the embodiment of the present application may increase the number of HARQ processes of data corresponding to a single codeword. Therefore, the embodiment of the present application can improve the utilization of the HARQ resource in the IP-RAN scenario with a large backhaul delay, and solve the problem of HARQ suspension when the joint reception or the joint transmission is performed.
  • the embodiment of the present application does not increase the complexity of the terminal device.
  • 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
  • the memory is configured to store a computer program
  • the processor is configured to call and run the computer program from the memory, so that the network device performs the first aspect, the second aspect, and the first aspect A possible implementation or a method of network device completion in any of the possible implementations of the second 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.
  • 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, receiving DCI, and/or receiving downlink data, and/or transmitting uplink data.
  • the one or more processors are configured to support the terminal device to perform a corresponding function in the above method. For example, parsing DCI.
  • 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
  • the memory is configured to store a computer program
  • the processor is configured to call and run the computer program from the memory, so that the terminal device performs the first aspect, the second aspect, and the first aspect A possible implementation or a method of completion of a terminal device in any of the possible implementations of the second aspect.
  • a system comprising the above terminal device and a network device.
  • a computer program product comprising: a computer program (also referred to as a code, or an instruction) that, when executed, causes the computer to perform the first aspect, the second aspect described above.
  • a computer program also referred to as a code, or an instruction
  • 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, the second Aspect, the method of any of the possible implementations of the first aspect, or any one of the possible implementations of the second aspect.
  • a computer program which may also be referred to as a code, or an instruction
  • FIG. 1 is a schematic diagram of a downlink CoMP transmission according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of uplink CoMP transmission according to an embodiment of the present application.
  • FIG. 3 shows a schematic interaction diagram of a communication method of an embodiment of the present application.
  • FIG. 4 shows a schematic diagram of a feedback ACK/NACK of the prior art.
  • FIG. 5 is a schematic diagram of a feedback ACK/NACK in the embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • Figure 8 is a block diagram showing the structure of a communication device.
  • TDD long term evolution
  • FDD frequency division duplex
  • time division duplex time division duplex
  • TDD future 5th generation
  • NR new radio
  • TRP transmission point
  • gNB base station
  • gNB base station
  • 5G new radio
  • the terminal device in the embodiment of the present application is a device having a wireless transceiver function, including but not limited to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, and a user terminal.
  • terminal wireless communication device, user agent or user device.
  • the terminal device may also 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.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the network device in the embodiment of the present application may be a device for communicating with the terminal device, where the network device may be an evolved base station (evolutional node B, eNB or eNodeB) in the LTE system, or may be a cloud wireless access network (cloud) Radio access network, CRAN)
  • the wireless controller in the scenario, or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, a drone system, a smart home, an Internet of Things, and a network in a future 5G network.
  • the device or the network device in the PLMN network in the future is not limited in this embodiment.
  • a coordinated multiple points (CoMP) transmission scenario data transmission or reception is jointly performed by multiple network side devices/base stations, which can improve system capacity and improve the reliability of transmitted data.
  • different network side devices/base stations transmit data through a backhaul/fronthaul link.
  • the X2 interface is a data packet transmission protocol carried on the IP protocol.
  • Different network side devices/base stations have non-ideal delays when connected through the X2 interface.
  • the non-ideal backhaul/fronthaul scenario is also referred to as a distributed RAN (D-RAN) scenario or an internet protocol RAN (IP-RAN) scenario.
  • D-RAN distributed RAN
  • IP-RAN internet protocol RAN
  • FIG. 1 is a schematic diagram of a downlink CoMP transmission according to an embodiment of the present application.
  • the first network device 10 may transmit a transmission reception point (TRP) for a service, or may also be referred to as a service network device.
  • the second network device 20 can be a collaborative TRP, or can also be referred to as a collaborative network device.
  • the first network device and the second network device may also be equal, both serving TRPs, or both being cooperative TRPs.
  • the first network device 10 and the second network device 20 are network devices in an IP-RAN scenario. That is, in the embodiment of the present application, the first network device 10 and the second network device 20 are connected through a predefined interface, such as an X2 interface, and the backhaul/fronthaul link is non-ideal. .
  • the first network device 10 and the second network device 20 jointly perform downlink data transmission to the terminal device 30.
  • the first network device 10 generates downlink scheduling information, and delivers the downlink scheduling information to the second network device 20, for example, to the second network device by using an X2 interface.
  • the first network device 10 may further send the first downlink data to the terminal device 30.
  • the first network device 10 sends the downlink scheduling information and the second downlink data to the terminal device 30 at the first time
  • the second network device 20 sends the first downlink data to the terminal device 30 according to the downlink scheduling information at the second time.
  • the terminal device 30 may send an acknowledgement (ACK) to the first network device 10 and/or the second network device 20 when receiving the first downlink data and/or the second downlink data and determining that the received downlink data has no error. Feedback.
  • ACK acknowledgement
  • the terminal device 30 may send a non-acknowledgement NACK to the first network device 10 and/or the second network device 20 when it is determined that the first downlink data or the second downlink data is not received, or the received downlink data is incorrect. Feedback.
  • the first time and/or the second time is greater than or equal to the delay of backhaul/fronthaul.
  • the first time and/or the second time may be determined according to a backhaul/fronthaul delay, for example, a delay of backhaul/fronthaul between the first network device 10 and the second network device 20 as the first time and/or The second time, or the negotiation between the network devices, is not limited in the embodiment of the present application.
  • the first downlink data and the second downlink data may be the same data stream or different data streams.
  • the antenna port that sends the first downlink data and the antenna port that sends the second downlink data may be the same antenna port or different antenna ports.
  • the beam that sends the first downlink data and the beam that sends the second downlink data are the same beam or different beams.
  • the first downlink data and the second downlink data are sent by using different antenna ports, or the first downlink data and the second downlink data are used. The same antenna port and different beams are transmitted.
  • a beam can be understood as a spatial resource, and can refer to a transmission or reception precoding vector having energy transmission directivity.
  • the energy transmission directivity may be that the signal received by the precoding process after receiving the precoding vector has a good receiving power in a certain spatial position, such as satisfying the receiving demodulation signal to noise ratio, etc., the energy transmission directivity. It can also be said that receiving the same signals transmitted from different spatial locations through the precoding vector has different received powers.
  • the same device (such as a network device or a terminal device) may have different precoding vectors. Different devices may have different precoding vectors, that is, corresponding to different beams. For a device configuration or capability, one device can be used at the same time. One or more of a plurality of different precoding vectors, that is, one beam or multiple beams can be formed at the same time. Beam information can be identified in a number of ways.
  • a beam identification mode is identified by using index information, which may correspond to a resource identifier (identity, ID) of a terminal device, such as a corresponding channel state information reference signal (CSI-RS).
  • ID resource identifier
  • the ID or the resource may also be the ID or resource of the corresponding uplink sounding reference signal (SRS), or may be the signal or channel display or implicit bearer index information carried by the beam.
  • SRS uplink sounding reference signal
  • the index information of the beam is indicated by, but not limited to, transmitting a synchronization signal or a broadcast channel or an uplink random access channel through the beam.
  • Another beam identification method identifies the beam by configuring a signal or channel transmitted through the beam and a configured resource to satisfy a spatial quasi-co-location QCL characteristic, where the spatial quasi-co-location feature refers to a channel having the same or similar spatial domain parameters.
  • the airspace parameters may be, for example, an emission angle (AOA), a dominant emission angle (Dominant AoA), an average arrival angle (Average AoA), an angle of arrival (AOD), a channel correlation matrix, a power angle spread spectrum of the angle of arrival, and an average starting angle. (Average AoD), power angle spread spectrum of the departure angle, transmit channel correlation, receive channel correlation, transmit beamforming, receive beamforming, spatial channel correlation, spatial filter, spatial filter parameters, or spatial receive parameters, etc.
  • the configured resource may be one or more of a CSI-RS, an SRS, a synchronization signal, a broadcast channel, and the like.
  • a CSI-RS CSI-RS
  • SRS SRS
  • a synchronization signal a broadcast channel, and the like.
  • the present application does not limit how the LEDs are identified and indicated.
  • the first downlink data and the second downlink data may be sent by using the same antenna port, or sent by using different antenna ports.
  • the beams for transmitting the first downlink data and the second downlink data may be the same or different.
  • FIG. 2 is a schematic diagram of uplink CoMP transmission according to an embodiment of the present application.
  • the same reference numerals in Fig. 2 as in Fig. 1 denote the same or similar meanings.
  • the first network device 10 and the second network device 20 jointly receive the uplink data transmitted by the terminal device 30.
  • the first network device 10 generates uplink scheduling information, and sends the uplink scheduling information to the second network device 20 and the terminal device 30, where the first network device 10 can uplink through a predefined interface, such as an X2 interface.
  • the scheduling information is passed to the second network device 20.
  • the terminal device 30 may send the first uplink data to the first network device 10 according to the uplink scheduling information, and send the second uplink data to the second network device 20 at the third time.
  • the second network device 20 After receiving the second uplink data, sends the second uplink data to the first network device 10 through a predefined interface, such as an X2 interface.
  • the first network device 10 may send an acknowledgement ACK feedback to the terminal device 30 when receiving the first uplink data and the second uplink data and determining that the received uplink data has no error.
  • the first network device 10 may send the NACK feedback to the terminal device 30 when it is determined that the first uplink data or the second uplink data is not received, or the received uplink data is incorrect.
  • the third time is greater than or equal to the delay of backhaul/fronthaul.
  • the third time may be determined according to a backhaul/fronthaul delay, for example, a delay of backhaul/fronthaul between the first network device 10 and the second network device 20 as a third time, or between network devices.
  • a backhaul/fronthaul delay for example, a delay of backhaul/fronthaul between the first network device 10 and the second network device 20 as a third time, or between network devices.
  • the first uplink data and the second uplink data may be the same data stream, or may be different data streams.
  • the antenna port that sends the first uplink data and the antenna port that sends the second uplink data may be the same antenna port or different antenna ports.
  • the beam that sends the first uplink data and the beam that sends the second uplink data are the same beam or different beams.
  • the first uplink data and the second uplink data are sent by using different antenna ports, or the first uplink data and the second uplink data are used by using the same antenna. Ports and different beams are sent.
  • the first uplink data and the second uplink data may be sent by using the same antenna port, or sent by using different antenna ports.
  • the beams of the first uplink data and the second uplink data may be the same or different.
  • the terminal device may send only once, the first network device 10 and The second network device 20 can receive uplink data from the terminal device, that is, the UE transmits only one data, and the first network device and the second network device receive the data at the same time.
  • the first network device and the second network may independently send uplinks corresponding to the first data and the second data.
  • the scheduling information that is, the terminal device can receive uplink scheduling information for scheduling the first uplink data and uplink scheduling information for scheduling the second uplink data.
  • the downlink scheduling information may also be a downlink scheduling grant (DL grant).
  • the downlink scheduling information or the DL grant is used to schedule the downlink data channel, and the downlink data channel may be the physical downlink shared channel PDSCH.
  • the uplink scheduling information may also be an uplink scheduling grant (UL grant).
  • the uplink scheduling information or the UL grant is used to schedule uplink data, and the uplink data may be sent through an uplink data channel, such as a physical uplink shared channel (PUSCH).
  • the uplink scheduling information or the downlink scheduling information may be collectively referred to as scheduling information, and the scheduling information generally corresponds to the downlink control information DCI.
  • DCI is used as an example for description.
  • the DCI in this application may also be replaced by scheduling information, DL grant (for downlink scheduling), or UL grant (for uplink scheduling). The plan still applies.
  • the codeword refers to a sequence of symbols obtained by adding at least one step of adding a cyclic redundancy check bit, encoding, scrambling, modulation, etc., by a transport block (TB).
  • a transport block TB
  • one transport block corresponds to one codeword.
  • the codeword and the transport block can be regarded as different names of the same information data in different information processing stages.
  • the codeword indication information in this application may also be referred to as transport block indication information, and they have the same meaning when not specifically indicated. .
  • FIG. 3 shows a schematic interaction diagram of a communication method of an embodiment of the present application.
  • the network device in FIG. 3 may be the first network device 10 in FIG. 1 or FIG. 2 above, and the terminal device may be the terminal device 30 in FIG. 1 or 2.
  • the network device generates downlink control information DCI.
  • the DCI is the above scheduling information.
  • the DCI may be uplink scheduling information or downlink scheduling information.
  • DCI in joint reception (JR), DCI can be used to schedule uplink data
  • JT joint transmission
  • DCI can be used to schedule downlink data.
  • the DCI is used to schedule a single codeword, or is used to schedule a single transport block. Therefore, the DCI may also be referred to as a single codeword DCI or a single transport block DCI.
  • the single codeword DCI may schedule more than one multiple input multiple output (MIMO) layer. For example, up to four MIMO transport layers can be scheduled.
  • MIMO transport layer may also correspond to a data stream that is simultaneously scheduled or transmitted. In the embodiment of the present application, there may be a case where the MIMO transmission layer and the transmission layer are mixed, and they are expressed in the same meaning unless otherwise specified.
  • the number of uplink antennas is generally one or two.
  • the number of uplink antennas may be four. Therefore, the number of layers of uplink transmission generally does not exceed 4 layers, and the number of corresponding transmission codewords may also be one.
  • the edge user equipment even if the terminal equipment has more than 4 transmitting antennas, the channel equipment can transmit more than 4 data streams at the same time due to the high channel correlation and the channel quality deterioration.
  • the codeword DCI performs corresponding uplink data scheduling.
  • downlink data scheduling and uplink data scheduling can be performed by using a single codeword DCI, which can reduce the overhead of DCI.
  • the reliability of the transmission of the DCI can be improved under the premise that the control channel uses the same physical time-frequency resource overhead.
  • the DCI may include a resource allocation (RA) field for indicating a scheduled physical time-frequency resource of a single codeword (or transport block) of the DCI scheduling, for indicating a modulation order and an encoding code.
  • RA resource allocation
  • MCS modulation and coding scheme
  • NDI new data indicator
  • RV redundancy version
  • the MCS field and the RV field may be jointly encoded to form a modulation and coding scheme and redundancy version field. It should be understood that the functionality of the new field may implement all or part of the functionality in which multiple independent fields are joined together.
  • the DCI includes indication information for indicating a single codeword (or transport block) of the DCI scheduling.
  • the indication information may indicate whether the codeword of the current DCI scheduling is codeword 0 (CW0) or codeword 1 (CW1), or indicates that the transport block 1 is indicated. Or transfer block 2.
  • the MCS/RV/NDI of the transport block 1 may be included in the DCI.
  • the MCS/RV/NDI of the transport block 2 may be included in the DCI.
  • the network device may send, to the terminal device, a first DCI for indicating scheduling CW0 and a second DCI for indicating scheduling CW1, or may also send a third DCI for indicating scheduling of other codewords, which may cause the terminal to Two or more codewords are scheduled between the device and the network device by transmitting a single codeword DCI.
  • the indication information may be a field included in the DCI (referred to as a codeword indication field or a transport block indication field in the present application), for example, may be 1 bit.
  • the codeword indication field may independently indicate information of the currently scheduled codeword, or information of the transport block.
  • the indication information is joint coding information, where the joint coding information is further used to indicate at least one other information in the DCI except the indication information, where the other at least one information is: At least one of: modulation coding policy information, new data indication information, redundancy version information, precoding and transmission layer indication information, coding block group CBG indication information, rank RI indication information, or resource allocation information.
  • the joint coding information may be used to indicate precoding and transmission layer and precoding and number of layers in addition to the indication information.
  • the joint coding information may have N bits, and corresponding ones may indicate 2 ⁇ N states. Where N is a positive integer greater than one.
  • the 2 ⁇ (N-1) states in the 2 ⁇ N states may indicate that the scheduling codeword is the code layer 0 and the number of transmission layers corresponding to the codeword 0 (the range may be 1 to 4 layers) and used.
  • the precoding information is transmitted, and the remaining 2 ⁇ (N-1) states in the 2 ⁇ N states may indicate the number of transmission layers corresponding to the codeword 1 and the codeword 1 of the scheduling codeword (the range may be 1 to 4 layers) And the transmission of precoding information used.
  • 2 ⁇ N states which 2 ⁇ (N-1) states correspond to the information indicating the codeword 0, and which 2 ⁇ (N-1) states correspond to the information indicating the codeword 1 can be specified by the protocol or local Pre-stored or pre-defined way to determine, can also be configured through the network side device.
  • the protocol specification or the local pre-storage or the predefined manner may be, for example, information that the first bit is 0 and the corresponding state is codeword 0. If the first bit is 1, the corresponding state is codeword 1. information.
  • the configuration may be through a radio resource control (RRC) message or a media access control control element (MAC CE) message, or may be other messages, which is not limited in this application.
  • RRC radio resource control
  • MAC CE media access control control element
  • the foregoing joint coding information may also be interpreted as whether the precoding and transport layer indication fields are multiplexed, that is, used to indicate one of the at least two codewords.
  • the field indicates the rank at most ( Rank) is 4, the field can have M bits, and the corresponding can indicate 2 ⁇ M states.
  • M is a positive integer.
  • M may be the same as or different from the value of N described above.
  • the meaning of this field is to indicate that the rank of a single fixed codeword (such as codeword 0) ranks from 1 to 4, or whether the joint coding indicates the currently scheduled codeword identifier (such as codeword 0 or codeword 1) and the code.
  • the rank and transmission precoding corresponding to the word may be determined by a protocol specification or a local pre-storage or a predefined manner, or may be configured by a network side device.
  • the configuration may be performed by using an RRC message or a media access control element MAC CE message, or other messages, which is not limited in this application.
  • the protocol specified or locally pre-stored or predefined manner determines that the meaning of the field may be, for single-carrier transmission, or only one or two for the transmit antenna port, the meaning of the field is current
  • the scheduled codeword identifier such as codeword 0 or codeword 1
  • the rank and transmission precoding corresponding to the codeword For multi-carrier transmission, or the antenna port is greater than 2, the meaning of this field is that the current scheduling is a single fixed
  • the rank of the codeword and the precoding information are transmitted, and the indicated rank ranges from 1 to 4.
  • the field 2 ⁇ N states correspond to different codewords and rank and precoding information corresponding to the codewords.
  • the 2 ⁇ N states which 2 ⁇ (N-1) states correspond to the information indicating the codeword 0, and which 2 ⁇ (N-1) states correspond to the information indicating the codeword 1 can be specified by the protocol or local It is determined in a pre-storage or pre-defined manner, or configured through a network-side device.
  • the protocol specification or the local pre-storage or the predefined manner may be, for example, the first bit of the field is 0, and the corresponding state is the information of the codeword 0, and the first bit of the field is 1 corresponding state. Both are code word 1 information.
  • the configuration may be performed by using an RRC message or a media access control element MAC CE message, or other messages, which is not limited in this application.
  • the above codeword indication information may also be multiplexed with a CB group (CBG) indication field, that is, the joint coding information may indicate a codeword, or may indicate a CBG indicating initial transmission or retransmission.
  • CBG indication field can be 4 bits.
  • a certain bit in the domain may be configured or in a pre-defined or pre-defined manner to be a CW-enabled identifier.
  • the CBG indication field after the joint coding is the above-mentioned indication information and the CBG.
  • Which of the 16 states corresponds to the information indicating the codeword 0, and the information of the eight states corresponding to the indication codeword 1 can be determined by pre-definition or by protocol specification or local pre-storage or predefined manner. Or, configure through the network side device.
  • the protocol specification or the local pre-storage or the predefined manner may be, for example, information that the first bit is 0 and the corresponding state is codeword 0. If the first bit is 1, the corresponding state is codeword 1. information.
  • the configuration message may be an RRC message or a MAC CE message, or may be other messages, which is not limited in this application.
  • the above codeword indication information may also be multiplexed with a rank indicator (RI) field, that is, the joint coding information may indicate both a codeword and a rank.
  • RI rank indicator
  • the joint coding information may indicate both a codeword and a rank.
  • the RI indicates that the field can be 3 bits
  • eight states can be indicated at this time, which are protocol-defined or locally pre-stored or pre-defined or configured. The four states may indicate that the number of CW0+ transmission layers is 1 to 4, and the other four states indicate that the number of CW1+ transmission layers is 1 to 4.
  • the four states of the eight states may indicate that the scheduled codeword is the code layer 0 and the number of transmission layers corresponding to the codeword 0 (layers 1-4), and the remaining four states of the eight states may indicate scheduling.
  • the code word is the number of transmission layers corresponding to codeword 1 and codeword 1 (1 to 4 layers).
  • Which of the eight states corresponds to the information indicating the codeword 0, and the information of the four states corresponding to the indicator codeword 1 can be determined by pre-definition or by protocol specification or local pre-storage or predefined manner. Or, configure through the network side device.
  • the protocol specification or the local pre-storage or the predefined manner may be, for example, the first bit of the field is 0, and the corresponding state is the information of the codeword 0. If the first bit of the field is 1, the corresponding state is Code word 1 information.
  • the configuration message may be an RRC message or a MAC CE message, or may be other messages, which is not limited in this application.
  • the RI indication field may be 2 bits, and the meaning of the field is to indicate whether the rank of the single fixed codeword (such as codeword 0) ranks from 1 to 4 or the joint coding indicates the currently scheduled codeword (for example, codeword 0)
  • the codeword 1) and the rank corresponding to the codeword may be determined by a protocol specification or a local pre-storage or a predefined manner, or may be configured by a network side device. The configuration may be performed by using an RRC message or a media access control element MAC CE message, or other messages, which is not limited in this application.
  • the protocol specified or locally pre-stored or predefined manner determines that the meaning of the field may be, for single-carrier transmission, or only one or two for the transmit antenna port, the meaning of the field is current
  • the codeword of the scheduling (such as codeword 0 or codeword 1) and the rank corresponding to the codeword, for multi-carrier transmission, or the antenna port is greater than 2, the meaning of the field is that the currently scheduled rank information of a single fixed codeword
  • the rank indicated by the rank information ranges from 1 to 4.
  • the field when the meaning of the rank indication field is a currently scheduled codeword (such as codeword 0 or codeword 1) and a rank corresponding to the codeword, the field corresponds to four states, where two states correspond to The codeword 0 and the codeword 0 correspond to the rank, and the other two states correspond to the codeword 1 and the rank corresponding to the codeword 1.
  • Which of the four states corresponds to the information indicating the codeword 0, and the information of the two states corresponding to the indicator codeword 1 can be determined by protocol specification or local pre-storage or a predefined manner, or through the network.
  • the side device is configured.
  • the protocol specification or the local pre-storage or the predefined manner may be, for example, the first bit of the field is 0, and the corresponding state is the information of the codeword 0. If the first bit of the field is 1, the corresponding state is Code word 1 information.
  • the configuration may be performed by using an RRC message or a media access control element MAC CE message, or other messages, which is not limited in this application.
  • the other at least one information jointly encoded with the codeword indication information may be any one or more of modulation coding policy information, new data indication information, redundancy version information, or resource allocation information.
  • the information indicated by any other indication domain in the DCI indication domain is not limited in this application.
  • the joint coding method can refer to the foregoing examples.
  • the single codeword of the DCI scheduling has a corresponding relationship with the first resource, and the first resource is related to a downlink control channel PDCCH for transmitting the DCI.
  • the first resource is a scrambling resource used to scramble a PDCCH that transmits the DCI. That is to say, the scrambling resource used to scramble the PDCCH transmitting the DCI has a correspondence relationship with the codeword of the DCI scheduling.
  • the scrambling resource is used to scramble the control channel, for example, a cell radio network temporary identifier (C-RNTI).
  • C-RNTI can be used to scramble the cyclic redundancy check (CRC) of the control channel or the data channel.
  • CRC cyclic redundancy check
  • the CRC is used to scramble the CRC of the control channel.
  • the control channel scrambling resource may also be other wireless network temporary identifiers, such as a semi-persistent scheduling cell radio network temporary identifier (SPS-CRNTI), and a random access wireless network temporary identifier (random access)
  • SPS-CRNTI semi-persistent scheduling cell radio network temporary identifier
  • random access wireless network temporary identifier random access wireless network temporary identifier
  • RA-RNTI radio network temporary identifier
  • P-RNTI paging radio network temporary identifier
  • control channel scrambling resources may be specified by a protocol or locally pre-stored or pre-defined, or configured by a network device.
  • the network device may send configuration information of the control channel scrambling resource to the terminal device.
  • the configuration information may be sent by using an RRC message or a MAC CE message.
  • the correspondence between the control channel scrambled resources and the codewords may be protocol-defined or locally pre-stored or pre-defined, or configured by a network device.
  • the network device may send configuration information of the correspondence between the control channel scrambling resource and the codeword to the terminal device.
  • the configuration information of the control channel scrambling resource and the codeword correspondence information may be sent by using an RRC message or a MAC CE message.
  • the configuration information and the configuration information of the control channel scrambled resource may be different fields in the same message.
  • the corresponding correspondences may be represented by one or more lists, formulas, strings of characters, arrays or codes, and the correspondences may be stored in the memory.
  • the first resource may be a resource used to transmit the downlink control channel PDCCH of the DCI. That is to say, the resource used for transmitting the PDCCH of the DCI has a correspondence relationship with the codeword of the DCI scheduling.
  • the network device can send the resource configuration information of the downlink control channel to the terminal device, and the resource configuration information of the downlink control channel is used to configure the resources of the downlink control channel.
  • the resources of the downlink control channel may include a time domain resource (such as a control channel start symbol), a frequency domain resource (such as a physical resource block occupied by a control channel), and a resource element group (REG) binding size (bundle).
  • the number of control channel elements (CCEs), one CCE may include multiple REGs, physical control channel candidates (CCE combinations that may be occupied by physical control channels, including the starting position of occupied CCEs and the number of occupied CCEs), and the type of transmission (such as REG to CCE centralized or distributed mapping), frame structure parameters (subcarrier spacing used, cyclic prefix length (also known as CP type, such as normal CP, extended CP), slot length, etc. At least one of one or more of them.
  • the network device may send the resource configuration information of the downlink control channel by using an RRC message.
  • the correspondence between the resources of the downlink control channel and the codeword may be specified by a protocol or locally pre-stored or pre-defined, or configured by a network device.
  • the network device may send configuration information of the correspondence between the control channel resources and the codewords to the terminal device.
  • the configuration information of the correspondence between the control channel resource and the codeword may be sent through an RRC message or a MAC CE message.
  • the configuration information of the corresponding relationship and the resource configuration information of the downlink control channel may be different fields in the same message.
  • the DCI used to schedule two codewords may be referred to as a dual codeword DCI.
  • the dual codeword DCI includes two MCS/RV/NDI and other information, that is, the dual codeword DCI can cause the NR to support simultaneous scheduling and transmission of two codewords.
  • the DCI includes a first number of a HARQ process used by the single codeword of the DCI scheduling, where the number of the first number is more than that for scheduling two codewords.
  • the number of values of the second number of the HARQ process used by any codeword in the DCI ie, dual codeword DCI.
  • the value range of the second number is a true subset of the value range of the first number.
  • the first number may indicate the process number of the HARQ used by the single codeword of the DCI schedule. For example, when the first number of the DCI scheduling is 0, the sending end waits for the data corresponding to the acknowledgment information of the sending HARQ process number 0, and receives the acknowledgment ACK or the acknowledgment ACK corresponding to the HARQ process number 0. Determine to clear the cache corresponding to HARQ process number 0 or a redundant version of the data before retransmission.
  • the total number of HARQ processes used by a single codeword scheduled by a single codeword DCI may be increased, such that the total number of HARQ processes used by a single codeword is greater than that of any codeword in the dual codeword DCI.
  • the number of HARQ For example, the number of HARQ processes used by a previous single codeword can be changed from 8 to 16.
  • the number of bits of the field for indicating the number of HARQ used by the single codeword may be increased to increase the total number of HARQ processes of the codeword scheduled by the single codeword DCI.
  • the number of HARQ processes used by a single codeword scheduled by the single codeword DCI is equal to the sum of the number of HARQs used by all codewords in the dual codeword DCI.
  • the HARQ process of the two codewords in the DCI of the dual codeword is renumbered to form a HARQ process corresponding to the single codeword DCI.
  • the multi-codeword in the present application is described by taking two codewords as an example. In the case where the multi-codeword is more than two codewords, the solution in the present application still applies.
  • the network device sends the DCI to the terminal device.
  • the network determines whether the currently scheduled codeword 0 or codeword 1 is generated, and then generates Corresponding fields in the corresponding DCI.
  • the network device determines that the currently scheduled codeword is 0. Or codeword 1, and then use the first resource to generate or transmit a PDCCH according to the first resource corresponding to codeword 0 or codeword 1.
  • the terminal device receives the DCI sent by the network device, and determines a codeword scheduled by the DCI according to the DCI.
  • the DCI may be carried by a downlink physical control channel (PDCCH), or may be carried by an enhanced downlink control channel (EPDCCH), or may be carried by another channel having a function of scheduling physical layer resource information, for example, random.
  • PDCCH downlink physical control channel
  • EPDCCH enhanced downlink control channel
  • RAR access response message
  • the first resource may further include other resources that have a channel that carries the function of scheduling physical layer resource information. That is, when other resources having a channel carrying the function of scheduling the physical layer resource information are used to carry the DCI, other resources having a channel carrying the function of scheduling the physical layer resource information may also be associated with the code of the DCI scheduling. Words have a corresponding relationship.
  • the terminal device may identify the resource of the PDCCH or identify the indication information in the DCI (ie, the foregoing codeword indication field), and specifically according to the resource of the PDCCH carrying the DCI, or according to the DCI.
  • the indication information determines the codeword of the DCI scheduling, that is, determines the transmitted or received codeword. 330.
  • the network device sends downlink data to the terminal device according to the DCI.
  • the network device may send downlink data to the terminal device according to the downlink scheduling information or the DL grant.
  • the first network device and/or the second network device described above may jointly send downlink data to the terminal device.
  • the terminal device sends, to the network device, an ACK or a NACK corresponding to data corresponding to the single codeword scheduled by the DCI.
  • a HARQ process can only process one transport block (TB) in the same Transmission Time Interval (TTI).
  • TTI refers to a time unit in which a single scheduled transmission continues, and may be a slot, a mini-slot, a subframe, a symbol, multiple symbols, or multiple aggregated time slots, etc., the present application. No restrictions. Specifically, when the terminal device receives the first downlink data sent by the first network device and/or the second downlink data sent by the second network device, and determines the received first downlink data and/or the second When there is no error in the downlink data, an ACK may be sent to the first network device and/or the second network device correspondingly.
  • the terminal device When the terminal device does not receive the first downlink data sent by the first network device and/or the second downlink data sent by the second network device, or determines that the received first downlink data and/or the second downlink data has an error.
  • the NACK may be sent to the first network device and/or the first network device correspondingly.
  • the terminal device sends uplink data to the network device according to the DCI.
  • the terminal device may send uplink data to the network device according to the uplink scheduling information or the UL grant.
  • the first network device and/or the second network device described above may jointly receive the uplink data sent by the terminal device.
  • the network device sends, to the terminal device, an ACK or a NACK corresponding to data corresponding to the single codeword scheduled by the DCI.
  • the ACK may be correspondingly sent to the terminal device.
  • the NACK may be correspondingly sent to the terminal device.
  • the uplink data may be the first uplink data or the second uplink data, as described above. To avoid repetition, details are not described herein again.
  • FIG. 4 shows a schematic diagram of a feedback ACK/NACK of the prior art.
  • the device that sends the ACK/NACK in FIG. 4 may be the first network device, the second network device, or the terminal device shown in FIG. 1 or FIG. 2, and the maximum HARQ used by the data corresponding to each codeword.
  • the process is 8.
  • the pre-scheduled delay is greater than the 8 ⁇ TTI length
  • all HARQ processes corresponding to CW0 cannot receive ACK/NACK within 8 TTIs, which leads to all
  • the HARQ process is suspended and the data transmission is interrupted. Since the codewords used by the LTE system are all CW0, the uplink data or the downlink data cannot be continuously transmitted at this time, which wastes the HARQ resources and further limits the transmission rate of the downlink data or the uplink data.
  • FIG. 5 is a schematic diagram of a feedback ACK/NACK in the embodiment of the present application.
  • the device that sends the ACK/NACK in FIG. 5 may be the first network device, the second network device, or the terminal device shown in FIG. 1 or FIG. 2, and the maximum HARQ used by the data corresponding to each codeword.
  • the process is 8.
  • Embodiments of the present application are capable of directly or indirectly indicating the codeword type of a single codeword scheduled by a single codeword DCI.
  • the first 8 TTI transmission codewords 0 (CW0) and the last 8 TTI transmission codewords 1 (CW1) may be indicated.
  • CW1 when all HARQs corresponding to CW0 are suspended, CW1 may also be scheduled due to DCI.
  • the HARQ entity in the terminal device can also support feedback ACK/NACK on the 8 TTIs corresponding to the CW1, because the terminal device has the function of sending or receiving two codewords.
  • FIG. 4 is only a schematic diagram, and the effect of the embodiment of the present application can be achieved by scheduling the time division of CW0 and CW1 at different scheduling times.
  • the DCI includes a first number of a hybrid automatic repeat request HARQ process used by data corresponding to a single codeword scheduled by the DCI, and the number of the first number is more than The number of the second number of the HARQ process used by the data corresponding to any one of the DCIs of the two codewords is used. Therefore, the embodiment of the present application can add a single code scheduled by the single codeword DCI. The total number of HARQ processes used by the data corresponding to the word. In this way, by increasing the number of HARQ processes of a single codeword, the problem of the suspension of the HARQ process can be reduced in an IP-RAN scenario with a large backhaul delay, thereby improving the transmission rate of downlink data or uplink data.
  • the terminal when the uplink data or the downlink data is scheduled by using the DCI, the terminal can indirectly or directly indicate the information of the single codeword scheduled by the DCI, so that the terminal can use different codewords for data transmission. Or the embodiment of the present application may increase the number of HARQ processes of data corresponding to a single codeword. Therefore, the embodiment of the present application can improve the utilization of the HARQ resource in the IP-RAN scenario with a large backhaul delay, and solve the problem of HARQ suspension when the joint reception or the joint transmission is performed.
  • the embodiment of the present application does not increase the complexity of the terminal device.
  • the information transmission interaction scheme of the embodiment of the present application is described above with reference to FIG. 1 to FIG. 5.
  • the communication device provided by the embodiment of the present application is further described below with reference to FIG. 6 to FIG.
  • FIG. 6 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. 1 or 2.
  • FIG. 6 shows only the main components of the terminal device.
  • the terminal device 100 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 Receiving downlink control information DCI from the network device, where the DCI includes indication information for indicating a single codeword of the DCI scheduling, or the single codeword of the DCI scheduling has a corresponding relationship with the first resource, Or the DCI includes a first number of the hybrid automatic repeat request HARQ process corresponding to the single codeword scheduled by the DCI, where the number of the first number is greater than the DCI used to schedule two codewords.
  • the control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals.
  • the control circuit and the antenna together may also be called a transceiver, and are mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves, such as receiving downlink data according to the DCI, or transmitting uplink data.
  • 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. 6 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. 6 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 circuit having the transceiving function can be regarded as the transceiving unit 101 of the terminal device 100, for example, for supporting the terminal device to perform the receiving function as described in the section of FIG.
  • the processor having the processing function is regarded as the processing unit 102 of the terminal device 100.
  • the terminal device 100 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. 7 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. 7, the base station can be applied to the system shown in FIG. 3 to perform the functions of the network device in the foregoing method embodiment.
  • the base station 200 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 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for transmitting the signaling messages described in the foregoing embodiments to the 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 between the state of the indication information in the above embodiment and its corresponding meaning, and/or the correspondence between the codeword and the first resource, 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. 8 is a schematic structural diagram of a communication device 700.
  • the device 700 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 700 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 700 includes one or more processors 701.
  • the processor 701 can be a general purpose processor or a dedicated processor or the like.
  • 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 700 includes one or more of the processors 701, and the one or more processors 701 can implement the methods of the network devices or terminal devices in the embodiments shown in FIG. 1-5.
  • the communication device 700 can be configured to generate downlink control information DCI, wherein the DCI includes indication information for indicating a single codeword of the DCI scheduling, or a single of the DCI scheduling
  • the codeword has a corresponding relationship with the first resource, or the DCI includes a first number of the hybrid automatic repeat request HARQ process corresponding to the single codeword scheduled by the DCI, and the number of the first number is more And the number of values of the second number of the HARQ process used by any one of the DCIs for scheduling the two codewords; and transmitting the DCI to the terminal device.
  • the generating DCI function can be implemented by one or more processors.
  • the DCI may be generated, for example, by one or more processors, and transmitted via a transceiver, or an input/output circuit, or an interface of a chip.
  • DCI refer to the related description in the foregoing method embodiments.
  • the communication device 700 includes means for receiving downlink control information DCI.
  • DCI downlink control information
  • the DCI can be received, for example, via a transceiver, or an input/output circuit, or an interface of the chip, and/or transmitted and received.
  • processor 701 can implement other functions in addition to the methods of the embodiments shown in FIG. 1-5.
  • the processor 701 may also include instructions 703 that may be executed on the processor such that the communication device 700 performs the methods described in the above method embodiments.
  • the communication device 700 can also include circuitry that can implement the functions of the foregoing method embodiments.
  • the communication device 700 can include one or more memories 702 on which instructions 704 are stored, the instructions being executable on the processor such that the communication device 700 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 one or more memories 702 may store the correspondence between the codewords and the first resources described in the foregoing embodiments, or the correspondence between the codewords and the indication information, or related to the related embodiments. Parameters or tables, etc.
  • the processor and the memory may be provided separately or integrated.
  • the communication device 700 may further include a transceiver unit 705 and an antenna 706.
  • the processor 701 may be referred to as a processing unit that controls a communication device (terminal or base station).
  • the transceiver unit 705 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 706.
  • 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 application specific integrated circuits (ASICs). , off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, 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 (such as a solid state disk (SSD)).

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Abstract

本申请提供了通信方法，包括：生成下行控制信息DCI，其中，所述DCI包括用于指示所述DCI调度的单个码字的指示信息，或者所述DCI调度的单个码字与第一资源具有对应关系，或者，所述DCI包括所述DCI调度的单个码字所对应的混合自动重传请求HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个码字的DCI中任一码字所使用的HARQ进程的第二编号的取值个数；向终端设备发送所述DCI。本申请实施例能够提高HARQ缓存的利用率。

Description

通信方法和通信装置
本申请要求于2017年08月11日提交中国专利局、申请号为201710687955.2、申请名称为“通信方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并且更具体的，涉及通信领域中的通信方法和通信装置。
背景技术
5G新无线(new radio，NR)系统支持一个物理下行数据信道(physical downlink shared channel，PDSCH)对应的下行控制信息(downlink control information，DCI)中只包含一个码字的调度信息，本申请实施例中将这种DCI称为单码字DCI。在5G NR系统中，对于下行(coordinated multiple Points，CoMP)，如果终端设备配置4个或者更少的接收天线，则最多可以传输4个数据流，因此，最大的传输码字为1个。另外，对于边缘用户设备，即使终端设备具有大于4个接收天线，由于信道的相关性较高且信道质量恶化，终端设备能够同时传输的数据流也不会超过4个，因而对应的可以使用单码字DCI进行相应的下行数据调度。
此时，NR系统默认只使用一个码字(即CW0或CW1)，相应地只使用该单个码字对应的HARQ缓存(buffer)。但是，UE具有两码字的发送或者接收能力，对应的UE支持两个码字的HARQ buffer。如何充分利用UE的HARQ buffer能力，成为亟待解决的一个问题。
发明内容
本申请提供一种通信方法和通信装置，能够提高HARQ缓存的利用率。
第一方面，提供了一种通信方法，包括：
生成下行控制信息DCI，其中，所述DCI包括用于指示所述DCI调度的单个码字的指示信息，或者所述DCI调度的单个码字与第一资源具有对应关系，或者，所述DCI包括所述DCI调度的单个码字所对应的混合自动重传请求HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个码字的DCI中任一码字所使用的HARQ进程的第二编号的取值个数；
向终端设备发送所述DCI。
其中，任一码字可以指每个码字，也可以指其中一个码字。
任一码字指每个码字的时候，可以更进一步的提高HARQ缓存的利用率。
第二方面，提供了一种通信方法，包括：
接收来自网络设备的下行控制信息DCI，其中，所述DCI包括用于指示所述DCI调 度的单个码字的指示信息，或者，所述DCI调度的单个码字与第一资源具有对应关系，或者，所述DCI包括所述DCI调度的单个码字所对应的混合自动重传请求HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个码字的DCI中任一码字所使用的HARQ进程的第二编号的取值个数；
根据所述DCI接收下行数据，或者发送上行数据。
这样，网络设备可以向终端设备发送包含用于指示调度CW0的第一DCI和用于指示调度CW1的第二DCI，或者还可以发送包含用于指示调度其他码字的第三DCI，可以使得终端设备和网络设备之间通过发送单码字DCI来调度两个或者更多个码字。
可选的，所述DCI还包括所述单个码字对应的调制编码策略信息，新数据指示信息，冗余版本信息，预编码和传输层指示信息，传输块组CBG指示信息，秩RI指示信息，或，资源分配信息中的至少一个。
因此，本申请实施例中，可以通过使用单码字DCI进行下行数据调度和上行数据的调度，能够降低DCI的开销。尤其对于边缘用户设备，在控制信道使用相同物理时频资源开销的前提下，能够提升DCI的传输的可靠性。
可选的，所述指示信息为联合编码信息，所述联合编码信息还用于指示所述DCI中除所述指示信息之外的其他至少一个信息，其中，所述其他至少一个信息为以下信息中的至少一个：调制编码策略信息，新数据指示信息，冗余版本信息，预编码和传输层指示信息，编码块组CBG指示信息，秩RI指示信息，或，资源分配信息。
这样，通过联合编码的方式，可以节省DCI的比特位开销。
可选的，所述第一资源为用于传输所述DCI的下行控制信道PDCCH的资源。
可选的，所述第一资源为用于对传输所述单码字DCI的PDCCH进行加扰的加扰资源。
可选的，所述第一资源与用于传输所述DCI的下行控制信道PDCCH相关。
这里，加扰资源用于对控制信道进行加扰，例如可以是小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)。C-RNTI可以用于对控制信道或数据信道的循环冗余校验(cyclic redundancy check，CRC)进行加扰，在本申请实施例中，用于对控制信道的CRC加扰。
因此，通过第一资源与DCI调度的单个码字具有对应关系，可以隐式的指示该DCI调度的是哪个码字。这样，能够减小DCI的比特开销，并且节省信令开销。
可选的，所述第二编号的取值范围是所述第一编号的取值范围的真子集。
可选的，单码字DCI所调度的单个码字所使用的HARQ进程的数量等于双码字DCI中所有码字使用的HARQ的数量之和。可选的，将双码字的DCI中两个码字的HARQ进程进行重新编号，构成单码字DCI对应的HARQ进程。
可选的，网络设备根据所述DCI，向终端设备发送下行数据。
可选的，终端设备向网络设备发送对应于所述DCI所调度的单个码字对应的数据的ACK或NACK。
一个HARQ进程在同一传输时间间隔(Transmission Time Interval，TTI)只能处理一个传输块(transport block，TB)。所述TTI是指单个调度传输持续的时间单元，可以为一个时隙(slot)、短时隙(mini-slot)、子帧、符号、多个符号或者多个聚合的时隙等，本申请不做限制。
可选的，终端设备根据所述DCI，向网络设备发送上行数据。
可选的，网络设备向终端设备发送对应于所述DCI所调度的单个码字对应的数据的ACK或NACK。
因此，本申请实施例中，在通过DCI进行上行数据或下行数据的调度时，通过间接或直接地指示该DCI所调度的单个码字的信息，使得终端能够使用不同的码字进行数据传输，或者本申请实施例可以通过增加单个码字对应的数据的HARQ进程的数目。因而本申请实施例能够在backhaul时延较大的IP-RAN场景下提HARQ资源的利用率，解决联合接收或联合发送时HARQ挂起的问题。
此外，因为终端设备本身就具有两个码字的接收能力，对应地具有两个码字的HARQ缓存，因此本申请实施例不会增加终端设备的复杂度。
本申请中以码字进行的描述，可以理解的是，鉴于码字和传输块之间的对应关系，本申请中的码字替换为以传输块进行描述，本申请中的方案也可行。
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。
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。
本申请中，“/”可以表示“和/或”。
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。
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。
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。
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、第二方面、第一方面中任一种可能实现方式或第二方面的任一种可能实现方式中网络设备完成的方法。
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。
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，和/或，接收下行数据，和/或，发送上行数据。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，解析DCI。
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。
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。
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。
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、第二方面、第一方面中任一种可能实现方式或第二方面的任一种可能实现方式中终端设备完成的方法。
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。
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、第二方面、第一方面中任一种可能实现方式或第二方面的任一种可能实现方式中的方法。
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、第二方面、第一方面中任一种可能实现方式或第二方面的任一种可能实现方式中的方法。
附图说明
图1示出了本申请实施例的一种下行CoMP传输的示意图。
图2示出了本申请实施例的上行CoMP传输的示意图。
图3示出了本申请实施例的一种通信方法的示意性交互图。
图4示出了现有技术的一种反馈ACK/NACK的示意图。
图5示出了本申请实施例中的一种反馈ACK/NACK的示意图。
图6为本申请实施例提供的一种终端设备的结构示意图。
图7为本申请实施例提供的一种网络设备的结构示意图。
图8给出了一种通信装置的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、未来的第五代(5th generation，5G)系统或新无线(new radio，NR)，及各种演进或融合的系统等。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。
本申请实施例中的终端设备为具有无线收发功能的设备，包括但不限于用户设备、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。终端设备还可以是蜂窝电话、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，智能家居，以及未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是LTE系统中的演进型基站(evolutional nodeB，eNB或eNodeB)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备，无人机系统，智能家居，物联网，以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，本申请实施例并不限定。
协作多点(coordinated multiple points，CoMP)传输场景中通过多个网络侧设备/基站联合进行数据的发送或接收，能够提升系统容量，并且还可以提升传输数据的可靠性。实际中不同的网络侧设备/基站之间通过回传/前传(backhaul/fronthaul)链路进行数据传输。在回传/前传(backhaul/fronthaul)链路具有时延或者带宽受限时，会导致基站间无法做到理想的信息交互。例如X2接口是承载在IP协议上的一种数据包传输协议，不同的网络侧设备/基站之间通过X2接口进行连接时具有非理想的时延。非理想backhaul/fronthaul场景也称之为分布式(distributed RAN，D-RAN)场景或者因特网协议(internet protocol RAN，IP-RAN)场景。
图1示出了本申请实施例的一种下行CoMP传输的示意图。如图1所示，第一网络设备10可以为服务发送接收点(transmission reception point，TRP)，或者还可以称为服务网络设备。第二网络设备20可以为协作TRP，或者还可以称为协作网络设备。第一网络设备和第二网络设备也可以是平等的，均为服务TRP，或，均为协作TRP。并且，第一网络设备10和第二网络设备20为IP-RAN场景中的网络设备。也就是说，本申请实施例中第一网络设备10和第二网络设备20之间通过预定义的接口，如X2接口，进行连接，并且回传/前传(backhaul/fronthaul)链路是非理想的。
在图1中，第一网络设备10和第二网络设备20联合对终端设备30进行下行数据的发送。
具体的，第一网络设备10生成下行调度信息，并将下行调度信息传递给第二网络设备20，例如通过X2接口发送至第二网络设备。可选的，这里，第一网络设备10还可以将第一下行数据发送给终端设备30。然后，第一网络设备10在第一时间将下行调度信息和第二下行数据发送给终端设备30，第二网络设备20在第二时间根据下行调度信息将第一下行数据发送给终端设备30。终端设备30在接收到第一下行数据和/或第二下行数据，且确定接收到的下行数据没有错误时，可以向第一网络设备10和/或第二网络设备20发送确认(ACK)反馈。或者，终端设备30在确定没有接收到第一下行数据或第二下行数据，或接收到的下行数据有误时，可以向第一网络设备10和/或第二网络设备20发送不确认NACK反馈。其中，第一时间和/或第二时间大于或等于backhaul/fronthaul的时延。
所述第一时间和/或第二时间可以是根据backhaul/fronthaul时延确定的，例如将第一网络设备10和第二网络设备20间的backhaul/fronthaul的时延作为第一时间和/或第二时间，或者是由网络设备之间进行协商的，本申请实施例中不做限制。所述第一下行数据和 所述第二下行数据可以是相同的数据流，也可以是不同的数据流。
可选的，所述发送所述第一下行数据的天线端口和发送所述第二下行数据的天线端口可以是相同的天线端口，或者是不同的天线端口。
可选的，所述发送所述第一下行数据的波束和发送所述第二下行数据的波束是相同的波束或者不同的波束。可选的，当所述第一下行数据和第二下行数据不同时，第一下行数据和第二下行数据使用不同的天线端口进行发送，或者第一下行数据和第二下行数据使用相同的天线端口以及不同的波束进行发送。
这里，波束可以理解为空间资源，可以是指具有能量传输指向性的发送或接收预编码向量。所述能量传输指向性可以指在一定空间位置内，接收经过该预编码向量进行预编码处理后的信号具有较好的接收功率，如满足接收解调信噪比等，所述能量传输指向性也可以指通过该预编码向量接收来自不同空间位置发送的相同信号具有不同的接收功率。同一设备(例如网络设备或终端设备)可以有不同的预编码向量，不同的设备也可以有不同的预编码向量，即对应不同的波束，针对设备的配置或者能力，一个设备在同一时刻可以使用多个不同的预编码向量中的一个或者多个，即同时可以形成一个波束或者多个波束。波束信息可以通过多种方式进行标识。
一种波束标识方式是通过索引信息进行标识，所述索引信息可以对应配置终端设备的资源标识(identity，ID)，如对应配置的信道状态信息参考信号(chanel state information-reference signal，CSI-RS)的ID或者资源，也可以是对应配置的上行探测参考信号(sounding reference signal,SRS)的ID或者资源，或者，也可以是通过该波束承载的信号或信道显示或隐式承载的索引信息，包括但是不限于通过该波束发送同步信号或者广播信道或者上行随机接入信道指示该波束的索引信息。
另一种波束标识方式通过配置通过该波束发送的信号或者信道与一个已配置资源满足空间准共址QCL特性进行标识该波束，所述空间准共址特性是指信道具有相同或者相似的空域参数，空域参数则可以为如发射角(AOA)、主发射角(Dominant AoA)、平均到达角(Average AoA)、到达角(AOD)、信道相关矩阵，到达角的功率角度扩展谱，平均出发角(Average AoD)、出发角的功率角度扩展谱、发射信道相关性、接收信道相关性、发射波束成型、接收波束成型、空间信道相关性、空间滤波器，空间滤波参数，或，空间接收参数等中的一项，所述已配置资源可以为CSI-RS、SRS、同步信号、广播信道等中的一个或者多个。当然，还可以存在其他的波束标识方式，本申请对波束如何进行标识和指示不做限定。
可选的，当所述第一下行数据和第二下行数据相同时，第一下行数据和第二下行数据可以使用相同的天线端口进行发送，或者使用不同的天线端口进行发送，此时，发送第一下行数据和第二下行数据的波束可以相同，也可以不同。
图2示出了本申请实施例的上行CoMP传输的示意图。图2中与图1中相同的附图标记表示相同或相似的含义。在图2中，第一网络设备10和第二网络设备20联合接收终端设备30发送的上行数据。
具体的，第一网络设备10生成上行调度信息，并将上行调度信息发送给第二网络设备20和终端设备30，其中，第一网络设备10可以通过预定义的接口，如X2接口，将上行调度信息传递给第二网络设备20。然后，终端设备30可以在第三时间根据上行调度信 息向第一网络设备10发送第一上行数据，向第二网络设备20发送第二上行数据。第二网络设备20在接收到第二上行数据之后，将第二上行数据通过预定义的接口，如X2接口发送给第一网络设备10。第一网络设备10在接收到第一上行数据和第二上行数据，且确定接收到的上行数据没有错误时，可以向终端设备30发送确认ACK反馈。或者，第一网络设备10在确定没有接收到第一上行数据或第二上行数据，或接收到的上行数据有误时，可以向终端设备30发送NACK反馈。其中，第三时间大于或等于backhaul/fronthaul的时延。
所述第三时间可以是根据backhaul/fronthaul时延确定的，例如将第一网络设备10和第二网络设备20间的backhaul/fronthaul的时延作为第三时间，或者是由网络设备之间进行协商的，本申请实施例中不做限制。所述第一上行数据和所述第二上行数据可以是相同的数据流，也可以是不同的数据流。
可选的，所述发送所述第一上行数据的天线端口和发送所述第二上行数据的天线端口可以是相同的天线端口，或者是不同的天线端口。可选的，所述发送所述第一上行数据的波束和发送所述第二上行数据的波束是相同的波束或者不同的波束。可选的，当所述第一上行数据和第二上行数据不同时，第一上行数据和第二上行数据使用不同的天线端口进行发送，或者第一上行数据和第二上行数据使用相同的天线端口以及不同的波束进行发送。可选的，当所述第一上行数据和第二上行数据相同时，第一上行数据和第二上行数据可以使用相同的天线端口进行发送，或者使用不同的天线端口进行发送，此时，发送第一上行数据和第二上行数据的波束可以相同，也可以不同。
可选的，当所述第一上行数据和第二上行数据相同时且第一上行数据和第二上行数据使用相同的天线端口进行发送时，终端设备可以仅发送一次，第一网络设备10和第二网络设备20可以分别接收来自终端设备的上行数据，即UE只发送一个数据，第一网络设备和第二网络设备同时接收该数据。
可选的，当所述第一上行数据和第二上行数据使用不同天线端口和/或不同波束发送时，第一网络设备和第二网络可以独立的发送对应第一数据和第二数据的上行调度信息，即终端设备可以接收调度第一上行数据的上行调度信息以及调度第二上行数据的上行调度信息。
本申请实施例中，下行调度信息还可以为下行调度授权(DL grant)。下行调度信息或DL grant用于调度下行数据信道，下行数据信道可以为物理下行共享信道PDSCH。上行调度信息还可以为上行调度授权(UL grant)。上行调度信息或UL grant用于调度上行数据，上行数据可以通过上行数据信道，如物理上行共享信道(physical uplink shared channel，PUSCH)进行发送。本申请实施例中，可以将上行调度信息或下行调度信息统称为调度信息，并且调度信息一般对应为下行控制信息DCI。为了描述方便，下文中统一以DCI为例进行描述，本申请中的DCI也可以替换为调度信息，DL grant(针对下行调度的情况)，或UL grant(针对上行调度的情况)，本申请描述的方案仍适用。
本申请实施例中，码字是指由传输块(transport block，TB)经过增加循环冗余校验位、编码、加扰、调制等至少一个步骤后得到的符号序列。可选的，一个传输块对应一个码字。码字和传输块可以认为是同一信息数据在不同信息处理过程阶段的不同叫法，本申请中码字指示信息，也可以称为传输块指示信息，在不特别指出时，它们表达的含义相同。
图3示出了本申请实施例的一种通信方法的示意性交互图。图3中的网络设备可以为上述图1或图2中的第一网络设备10，终端设备可以为图1或图2中的终端设备30。
310，网络设备生成下行控制信息DCI。
这里，DCI即为上述调度信息。该DCI可以为上行调度信息，也可以为下行调度信息。具体来说，在联合接收(joint reception，JR)时，DCI可以用于调度上行数据，在联合发送(joint transmission，JT)时，DCI可以用于调度下行数据。
本申请实施例中，DCI用于调度单个码字，或者说用于调度单个传输块，因此本申请实施例中还可以称该DCI为单码字DCI或者单传输块DCI。可选的，所述单码字DCI可以调度多于一个多输入多输出(multiple input multiple output，MIMO)层。例如可以调度最多四个MIMO传输层。其中，MIMO传输层也可以对应同时调度或者传输的数据流。本申请实施例中MIMO传输层和传输层可能存在混用的情况，在不特别指出时，它们表达的含义相同。
在5G NR系统中，对于下行CoMP(如JT)，已经认为可以使用单码字DCI进行相应的下行数据调度。NR中，当传输层数小于等于4时，仅传输一个码字，即一个码字可以最多可以映射到四层。
而对于上行CoMP(如JR)，上行天线的数目一般为1个或者2个。对于高能力的终端，例如车载终端、中继、CPE等，上行天线的数目可能为4个。因此，上行传输的层数一般也不会超过4层，对应的传输码字的数目也可能是1个。另外，对于边缘用户设备，即使终端设备具有大于4个发送天线，由于信道的相关性较高且信道质量恶化，终端设备能够同时传输的数据流也不会超过4个，因而对应的可以使用单码字DCI进行相应的上行数据调度。
因此，本申请实施例中，可以通过使用单码字DCI进行下行数据调度和上行数据的调度，能够降低DCI的开销。尤其对于边缘用户设备，在控制信道使用相同物理时频资源开销的前提下，能够提升DCI的传输的可靠性。
示例的，DCI中可以包括所述DCI调度的单个码字(或传输块)的用于指示调度的物理时频资源的资源分配(resource allocation，RA)字段、用于指示调制阶数和编码码率信息或者调制编码等级的调制编码策略(modulation and coding scheme，MCS)字段、用于指示当前调度数据为新调度还是重传的新数据指示(new data indicator，NDI)字段、用于指示当前调度数据对应的HARQ版本信息的块冗余版本(redundancy version，RV)字段中的一个或者多个，也可能会包括如上所述多个字段中的至少两个进行联合编码组成的新字段。例如可以将MCS字段和RV字段联合编码，组成调制编码策略和冗余版本(modulation and coding scheme and redundancy version)字段。应理解，新字段的功能可以实现多个独立字段联合在一起的全部或者部分功能。
在一种可能的实现方式中，所述DCI包括用于指示所述DCI调度的单个码字(或传输块)的指示信息。以两个码字为码字0和码字1为例，该指示信息可以指示当前DCI调度的码字为码字0(CW0)还是码字1(CW1)，或者说指示的是传输块1还是传输块2。例如，当DCI调度的单个码字为CW0时，DCI中可以包括传输块1的MCS/RV/NDI。当DCI调度的单个码字为CW1时，DCI中可以包括传输块2的MCS/RV/NDI。
这样，网络设备可以向终端设备发送包含用于指示调度CW0的第一DCI和用于指示 调度CW1的第二DCI，或者还可以发送包含用于指示调度其他码字的第三DCI，可以使得终端设备和网络设备之间通过发送单码字DCI来调度两个或者更多个码字。
可选的，该指示信息可以为DCI所包括的一个字段(本申请中称为码字指示字段或者传输块指示字段)，例如可以为1bit。该码字指示字段可以独立的指示当前调度的码字的信息，或者传输块的信息。
可选的，所述指示信息为联合编码信息，所述联合编码信息还用于指示所述DCI中除所述指示信息之外的其他至少一个信息，其中，所述其他至少一个信息为以下信息中的至少一个：调制编码策略信息，新数据指示信息，冗余版本信息，预编码和传输层指示信息，编码块组CBG指示信息，秩RI指示信息，或，资源分配信息。
例如，所述联合编码信息除了用于指示所述指示信息之外，还可以用于指示传输预编码以及传输层数的预编码和传输层(precoding information and number of layers)。该联合编码信息可以具有N个bit，对应的可以指示2^N个状态。其中，N为大于1的正整数。
其中，2^N个状态中的2^(N-1)个状态可以指示调度码字的为码字0以及码字0对应的传输层数信息(范围可以为1～4层)和使用的传输预编码信息，2^N个状态中剩余的2^(N-1)个状态可以指示调度码字的为码字1以及码字1对应的传输层数信息(范围可以为1～4层)和使用的传输预编码信息。
所述2^N个状态中，哪2^(N-1)个状态对应指示码字0的信息，哪2^(N-1)个状态对应指示码字1的信息可以通过协议规定或本地预存储或预先定义的方式确定，也可以通过网络侧设备进行配置。所述协议规定或本地预存储或预先定义的方式例如可以为第一个比特为0则对应的状态都是码字0的信息，第一个比特为1则对应的状态都是码字1的信息。所述配置可以通过无线资源控制消息(radio resource control，RRC)消息或者为媒体接入控制控制元素(media access control control element，MAC CE)消息，也可以为其他消息，本申请不做限定。
可选的，以上联合编码信息，也可以解释为预编码和传输层指示字段是否被复用，即用于指示至少两个码字中的一个，未被复用时，该字段最多指示秩(rank)为4，该字段可以具有M个bit，对应的可以指示2^M个状态。其中，M为正整数。其中，M可以与前述N的值相同，也可以不同。该字段的含义是指示单个固定码字(如码字0)秩的范围为1～4，还是，进行联合编码指示当前调度的码字标识(如为码字0还是码字1)以及该码字对应的秩和传输预编码，可以通过协议规定或本地预存储或预先定义的方式进行确定，或者，通过网络侧设备进行配置。所述配置可以通过RRC消息或者为媒体接入控制控制元素MAC CE消息，也可以为其他消息，本申请不做限定。
可选的，所述协议规定或本地预存储或预先定义的方式确定该字段的含义可以为，对于单载波传输时，或者对于发送天线端口仅有1个或者2个，该字段的含义为当前调度的码字标识(如为码字0还是码字1)以及该码字对应的秩和传输预编码，对于多载波传输，或者天线端口大于2，该字段的含义为当前调度的是单个固定码字的秩以及传输预编码信息，且指示的秩的范围为1～4。
可选的，当所述预编码和传输层指示字段的含义为当前调度的码字标识(如为码字0还是码字1)以及该码字对应的秩和传输预编码时，该字段2^N个状态对应不同的码字以及码字对应的秩和预编码信息。所述2^N个状态中，哪2^(N-1)个状态对应指示码字0 的信息，哪2^(N-1)个状态对应指示码字1的信息可以通过协议规定或本地预存储或预先定义的方式进行确定，或者，通过网络侧设备进行配置。所述协议规定或本地预存储或预先定义的方式例如可以为该字段的第一个比特为0则对应的状态都是码字0的信息，该字段的第一个比特为1则对应的状态都是码字1的信息。所述配置可以通过RRC消息或者为媒体接入控制控制元素MAC CE消息，也可以为其他消息，本申请不做限定。
再例如，以上码字指示信息也可以与编码块组(CB group，CBG)指示字段复用，即，联合编码信息既可以指示码字，也可以指示指示初传或者重传的CBG。CBG指示字段可以为4个比特。对于协同传输，可以配置或者通过协议规定或本地预存储或预先定义的方式该域中的某1个比特为CW使能标识，此时经过联合编码后的CBG指示字段即为上述指示信息与CBG指示字段联合编码的字段。
具体的，2^4＝16个状态中的2^(3)＝8个状态可以指示调度码字的为码字0的CBG的信息，2^4＝16个状态中剩余的2^(3)＝8个状态可以指示调度码字的为码字1的CBG的信息。
所述16个状态中，哪8个状态对应指示码字0的信息，哪8个状态对应指示码字1的信息可以通过预先定义或者通过协议规定或本地预存储或预先定义的方式进行确定，或者，通过网络侧设备进行配置。所述协议规定或本地预存储或预先定义的方式例如可以为第一个比特为0则对应的状态都是码字0的信息，第一个比特为1则对应的状态都是码字1的信息。所述配置消息可以通过RRC消息或者为MAC CE消息，也可以为其他消息，本申请不做限定。
再例如，以上码字指示信息也可以与秩指示(rank indicator，RI)字段复用，即，联合编码信息既可以指示码字，也可以指示秩。RI指示域可以为3个比特时，此时可以指示八种状态，该状态为协议规定或本地预存储或预先定义的或配置的。其中，四种状态可以指示CW0+传输层数为1～4，另外四种状态指示CW1+传输层数为1～4。
具体的，8个状态中的4个状态可以指示调度的码字为码字0以及码字0对应的传输层数信息(1～4层)，8个状态中剩余的4个状态可以指示调度码字的为码字1以及码字1对应的传输层数信息(1～4层)。
所述8个状态中，哪4个状态对应指示码字0的信息，哪4个状态对应指示码字1的信息可以通过预先定义或者通过协议规定或本地预存储或预先定义的方式进行确定，或者，通过网络侧设备进行配置。所述协议规定或本地预存储或预先定义的方式例如可以为该字段第一个比特为0则对应的状态都是码字0的信息，该字段第一个比特为1则对应的状态都是码字1的信息。所述配置消息可以通过RRC消息或者为MAC CE消息，也可以为其他消息，本申请不做限定。
或者，RI指示域可以为2个比特，该字段的含义是指示单个固定码字(如码字0)秩的范围为1～4还是进行联合编码指示当前调度的码字(如为码字0还是码字1)以及该码字对应的秩，可以通过协议规定或本地预存储或预先定义的方式进行确定，或者，通过网络侧设备进行配置。所述配置可以通过RRC消息或者为媒体接入控制控制元素MAC CE消息，也可以为其他消息，本申请不做限定。
可选的，所述协议规定或本地预存储或预先定义的方式确定该字段的含义可以为，对于单载波传输时，或者对于发送天线端口仅有1个或者2个，该字段的含义为当前调度的 码字(如为码字0还是码字1)以及该码字对应的秩，对于多载波传输，或者天线端口大于2，该字段的含义为当前调度的是单个固定码字的秩信息，所述秩信息指示的秩的范围为1～4。
可选的，当所述秩指示字段的含义为当前调度的码字(如为码字0还是码字1)以及该码字对应的秩时，该字段对应4个状态，其中2个状态对应码字0以及码字0对应的秩，另2个状态对应码字1以及码字1对应的秩。所述4个状态中，哪2个状态对应指示码字0的信息，哪2个状态对应指示码字1的信息可以通过协议规定或本地预存储或预先定义的方式进行确定，或者，通过网络侧设备进行配置。所述协议规定或本地预存储或预先定义的方式例如可以为该字段第一个比特为0则对应的状态都是码字0的信息，该字段第一个比特为1则对应的状态都是码字1的信息。所述配置可以通过RRC消息或者为媒体接入控制控制元素MAC CE消息，也可以为其他消息，本申请不做限定。
以上仅为举例，所述与码字指示信息联合编码的其他至少一个信息可以为调制编码策略信息，新数据指示信息，冗余版本信息或，资源分配信息中的任何一个或者多个，也可以为DCI指示域中的任意其他指示域所指示的信息，本发申请不做限制。相应地，联合编码方式可以参考前述举例。
可选的，所述DCI调度的单个码字与第一资源具有对应关系，且所述第一资源与用于传输所述DCI的下行控制信道PDCCH相关。
在另一种可能的实现方式中，所述第一资源为用于对传输所述DCI的PDCCH进行加扰的加扰资源。也就是说，用于对传输该DCI的PDCCH进行加扰的加扰资源与该DCI调度的码字具有对应关系。
这里，加扰资源用于对控制信道进行加扰，例如可以是小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)。C-RNTI可以用于对控制信道或数据信道的循环冗余校验(cyclic redundancy check，CRC)进行加扰，在本申请实施例中，用于对控制信道的CRC加扰。
控制信道加扰资源也可以是其他的无线网络临时标识，例如半持续调度小区无线网络临时标识(semi-persistent scheduling cell radio network temporary identifier，SPS-CRNTI)，随机接入无线网络临时标识(random access radio network temporary identifier，RA-RNTI)，寻呼无线网络临时标识(paging radio network temporary identifier，P-RNTI)等，本申请实施例对此不限定。
本申请实施例中，控制信道加扰资源可以协议规定或本地预存储或预先定义，或者通过网络设备配置。对于网络设备配置的控制信道加扰资源，网络设备可以向终端设备发送控制信道加扰资源的配置信息。具体的，该配置信息可以通过RRC消息或者MAC CE消息进行发送。
控制信道加扰资源与码字的对应关系可以协议规定或本地预存储或预先定义，或者通过网络设备配置。对于网络设备配置的控制信道加扰资源与码字的对应关系，网络设备可以向终端设备发送控制信道加扰资源与码字的对应关系的配置信息。控制信道加扰资源与码字的对应关系的配置信息可以通过RRC消息或者MAC CE消息进行发送。
可选的，所述配置信息与控制信道加扰资源的配置信息可以为同一消息中的不同字段。
在本申请中，所提到的对应关系均可以通过一个或多个列表，公式，一串字符，数组或是代码的方式体现，对应关系可以存储在存储器内。
在一种可能的实现方式中，第一资源可以为用于传输所述DCI的下行控制信道PDCCH的资源。也就是说，用于对传输该DCI的PDCCH的资源与该DCI调度的码字具有对应关系。
网络设备可以发送下行控制信道的资源配置信息给终端设备，下行控制信道的资源配置信息用于配置下行控制信道的资源。其中，下行控制信道的资源可以包括时域资源(如控制信道起始符号)、频域资源(如控制信道占用的物理资源块)、资源单元组(resource element group，REG)绑定尺寸(bundle size)(对应绑定尺寸的REG的所有资源单元(resource element，RE)使用相同的预编码，一个REG包括多个RE)、搜索空间的聚合级别(聚合级别定义为构成控制信道的控制信道元素(control channel element，CCE)的数目，一个CCE可以包括多个REG)、物理控制信道候选(物理控制信道可能占用的CCE组合，包括占用CCE的起始位置以及占用CCE的数目)、传输类型(如REG到CCE集中式或者分布式映射)、帧结构参数(采用的子载波间隔、循环前缀长度(也称为CP类型，如正常(normal)CP，扩展(extended)CP)、时隙长度等的一个或者多个)中的至少一个。
可选的，网络设备可以通过RRC消息发送下行控制信道的资源配置信息。
下行控制信道的资源与码字的对应关系可以协议规定或本地预存储或预先定义，或者通过网络设备配置。对于网络设备配置的控制信道资源与码字的对应关系，网络设备可以向终端设备发送控制信道资源与码字的对应关系的配置信息。控制信道资源与码字的对应关系的配置信息可以通过RRC消息或者MAC CE消息进行发送。
可选的，所述对应关系的配置信息与下行控制信道的资源配置信息可以为同一消息中的不同字段。
本申请实施例中，可以将用于调度两个码字的DCI称为双码字DCI。双码字DCI包括两个MCS/RV/NDI等信息，也就是说，双码字DCI可以使得NR支持两个码字同时调度和传输。
另一种可能的实现方式中，所述DCI包括所述DCI调度的单个码字所使用的HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个码字的DCI(即双码字DCI)中任一码字所使用的HARQ进程的第二编号的取值个数。
可选的，所述第二编号的取值范围是所述第一编号的取值范围的真子集。
第一编号可以表示该DCI调度的单个码字使用的HARQ的进程号。例如，当DCI调度的第一编号为0时，发送端会等待所述发送HARQ进程编号为0的数据对应确认信息，当收到对应HARQ进程编号为0的确认ACK或不确认ACK，发送端确定清除HARQ进程编号0对应的缓存或者重传之前数据的一个冗余版本。
本申请实施例中，可以增加单码字DCI所调度的单个码字所使用的HARQ进程的总的数量，使得单个码字使用的HARQ进程的总数大于双码字DCI中任一码字使用的HARQ的数量。例如，可以将之前的单个码字使用的HARQ进程数由8变成16。示例的，可以增加用于指示所述单码字使用的HARQ的编号的字段的比特数来增加单码字DCI所调度的码字总的HARQ进程数目。
可选的，单码字DCI所调度的单个码字所使用的HARQ进程的数量等于双码字DCI中所有码字使用的HARQ的数量之和。可选的，将双码字的DCI中两个码字的HARQ进程进行重新编号，构成单码字DCI对应的HARQ进程。
可以理解的是，本申请中的多码字以两个码字为例进行描述，在多码字为多于两个码字的情况下，本申请中的方案仍适用。
320，网络设备向终端设备发送所述DCI。
可选的，在一种可能的实现方式中，对于所述DCI包括用于指示所述DCI调度的单个码字的指示信息时，网络确定当前调度的是码字0还是码字1，然后生成相应的DCI中相应的字段。
可选的，对于DCI调度的单个码字与第一资源具有对应关系，且所述第一资源与用于传输所述DCI的下行控制信道PDCCH相关时，网络设备确定当前调度的是码字0还是码字1，然后根据码字0或者码字1对应的第一资源，使用所述第一资源进行PDCCH的生成或者发送。
相应地，终端设备接收网络设备发送的所述DCI，并根据所述DCI确定所述DCI所调度的码字。
具体的，所述DCI可以通过下行物理控制信道(PDCCH)进行承载，或者通过增强的下行控制信道(EPDCCH)进行承载，或者通过其他的具有承载调度物理层资源信息功能的信道进行承载，例如随机接入响应消息(Random Access Response，RAR)，本申请对此不做限定。
具体的，第一资源还可以包括其他的具有承载调度物理层资源信息功能的信道的资源。也就是说，当其他的具有承载调度物理层资源信息功能的信道的资源被用于承载该DCI时，其他的具有承载调度物理层资源信息功能的信道的资源也可以与所述DCI调度的码字具有对应关系。
终端设备在接收到PDCCH之后，可以识别PDCCH的资源或者识别所述DCI中的指示信息(即上述码字指示字段)，并具体根据承载所述DCI的PDCCH的资源，或者根据所述DCI中包括的指示信息，确定所述DCI调度的码字，即确定发送的或者接收的码字。330，可选的，网络设备根据所述DCI，向终端设备发送下行数据。
具体的，当所述DCI为下行调度信息或DL grant时，网络设备可以根据该下行调度信息或DL grant向终端设备发送下行数据。具体而言，在CoMP场景中，上文中所述的第一网络设备和/或第二网络设备可以联合向终端设备发送下行数据。
340，可选的，终端设备向网络设备发送对应于所述DCI所调度的单个码字对应的数据的ACK或NACK。
一个HARQ进程在同一传输时间间隔(Transmission Time Interval，TTI)只能处理一个传输块(transport block，TB)。所述TTI是指单个调度传输持续的时间单元，可以为一个时隙(slot)、短时隙(mini-slot)、子帧、符号、多个符号或者多个聚合的时隙等，本申请不做限制。具体而言，当终端设备接收到第一网络设备发送的第一下行数据和/或第二网络设备发送的第二下行数据，并确定到接收到的第一下行数据和/或第二下行数据没有错误时，可以对应的向第一网络设备和/或第二网络设备发送ACK。当终端设备没有接收到第一网络设备发送的第一下行数据和/或第二网络设备发送的第二下行数据，或者 确定接收到的第一下行数据和/或第二下行数据有错误时，可以对应的向第一网络设备和/或第网络设备发送NACK。
350，可选的，终端设备根据所述DCI，向网络设备发送上行数据。
具体的，当所述DCI为上行调度信息或UL grant时，终端设备可以根据该上行调度信息或UL grant向网络设备发送上行数据。具体而言，在CoMP场景中，上文中所述的第一网络设备和/或第二网络设备可以联合接收终端设备发送的上行数据。
360，可选的，网络设备向终端设备发送对应于所述DCI所调度的单个码字对应的数据的ACK或NACK。
具体而言，当第一网络设备和/或第二网络设备接收到终端设备发送的上行数据，并确定到接收到的上行下行数据没有错误时，可以对应的向终端设备发送ACK。当网络设备没有接收到终端设备发送的上行数据，或者确定接收到的上行数据有错误时，可以对应的向终端设备发送NACK。具体的，上行数据可以为上文中所述的第一上行数据或第二上行数据，为避免重复，这里不再赘述。
图4示出了现有技术的一种反馈ACK/NACK的示意图。具体的，图4中的发送ACK/NACK的设备可以为图1或图2中所示的第一网络设备、第二网络设备或终端设备，且每个码字对应的数据使用的最大的HARQ进程为8。当采用现有技术的单码字DCI进行数据传输时，在预调度的时延大于8×TTI长度时，CW0对应的所有HARQ进程均无法在8个TTI内收到ACK/NACK，这导致所有HARQ进程均挂起，数据传输中断。由于LTE系统默认使用的码字均为CW0，因此此时不能继续发送上行数据或下行数据，造成HARQ资源的浪费，且会进一步限制下行数据或上行数据的传输速率。
图5示出了本申请实施例中的一种反馈ACK/NACK的示意图。具体的，图5中的发送ACK/NACK的设备可以为图1或图2中所示的第一网络设备、第二网络设备或终端设备，且每个码字对应的数据使用的最大的HARQ进程为8。
本申请实施例能够通过直接或间接地指示单码字DCI所调度的单个码字的码字类型。例如在图4中，可以指示前面8个TTI传输码字0(CW0)，后8个TTI传输码字1(CW1)。本申请实施例中，当CW0对应的所有HARQ挂起时，由于DCI还可以调度CW1。由于终端设备具有两个码字的发送或者接收能力，在CW0对应的所有HARQ挂起时，终端设备中的HARQ实体还可以支持对CW1对应的8个TTI进行反馈ACK/NACK。需要注意的是，图4仅为一种示意，通过CW0和CW1在不同调度时间上时分的调度，即可以达到本申请实施例的效果。
针对另一种实施方式，所述DCI包括所述DCI调度的单个码字所对应的数据所使用的混合自动重传请求HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个码字的DCI中中任一个码字所对应的数据所使用的HARQ进程的第二编号的取值个数，因此本申请实施例可以增加单码字DCI所调度的单个码字所对应的数据所使用的HARQ进程的总的数量。这样，通过增加单码字的HARQ进程数目，也能够在backhaul时延较大的IP-RAN场景下减小HARQ进程挂起的问题，进而提高下行数据或上行数据的传输速率。
因此，本申请实施例中，在通过DCI进行上行数据或下行数据的调度时，通过间接或直接地指示该DCI所调度的单个码字的信息，使得终端能够使用不同的码字进行数据传 输，或者本申请实施例可以通过增加单个码字对应的数据的HARQ进程的数目。因而本申请实施例能够在backhaul时延较大的IP-RAN场景下提HARQ资源的利用率，解决联合接收或联合发送时HARQ挂起的问题。
此外，因为终端设备本身就具有两个码字的接收能力，对应地具有两个码字的HARQ缓存，因此本申请实施例不会增加终端设备的复杂度。
前文结合图1至图5对本申请实施例的信息传输交互方案进行了说明，下面结合图6至图8对本申请实施例的提供的通信装置做进一步说明。
图6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或图2所示出的系统中。为了便于说明，图6仅示出了终端设备的主要部件。如图6所示，终端设备100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，接收来自网络设备的下行控制信息DCI，其中，所述DCI包括用于指示所述DCI调度的单个码字的指示信息，或者，所述DCI调度的单个码字与第一资源具有对应关系，或者，所述DCI包括所述DCI调度的单个码字所对应的混合自动重传请求HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个码字的DCI中任一码字所使用的HARQ进程的第二编号的取值个数。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，如根据所述DCI接收下行数据，或者发送上行数据。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后，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。
本领域技术人员可以理解，为了便于说明，图6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。
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6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。
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100的收发单元101，例如，用于支持终端设备执行如图3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100的处理单元102。如图6所示，终端设备100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。
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。
图7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7所示，该基站可应用于如图3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200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上述实施例中所述的信令消息。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。
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。
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的状态与其相应含义的对应关系，和/或，码字与第一资源的对应关系等。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。
图8给出了一种通信装置700的结构示意图，装置700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700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。
所述通信装置700包括一个或多个处理器701。所述处理器701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。
所述通信装置700包括一个或多个所述处理器701，所述一个或多个处理器701可实现图1-5所示各实施例中网络设备或者终端设备的方法。
在一种可能的设计中，所述通信装置700可以用于生成下行控制信息DCI，其中，所述DCI包括用于指示所述DCI调度的单个码字的指示信息，或者所述DCI调度的单个码字与第一资源具有对应关系，或者，所述DCI包括所述DCI调度的单个码字所对应的混合自动重传请求HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个码字的DCI中任一码字所使用的HARQ进程的第二编号的取值个数；向终端设备发送所述DCI。可以通过一个或多个处理器来实现所述生成DCI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。所述DCI可以参见上述方法实施例中的相关描述。
在一种可能的设计中，所述通信装置700包括用于接收下行控制信息DCI的部件。所述DCI可以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，和/或，收发数据。
可选的，处理器701除了实现图1-5所示各实施例的方法，还可以实现其他功能。
可选的，一种设计中，处理器701也可以包括指令703，所述指令可以在所述处理器上被运行，使得所述通信装置700执行上述方法实施例中描述的方法。
在又一种可能的设计中，通信装置700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。
在又一种可能的设计中所述通信装置700中可以包括一个或多个存储器702，其上存有指令704，所述指令可在所述处理器上被运行，使得所述通信装置700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。例如，所述一个或多个存储器702可以存储上述实施例中所描述的码字与第一资源的对应关系，或，码字与指示信息的对应关系，或者上述实施例中所涉及的相关的参数或表格等。所述处理器和存储器可以单独设置，也可以集成在一起。
在又一种可能的设计中，所述通信装置700还可以包括收发单元705以及天线706。所述处理器701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705可以称为收发机、收发电路、或者收发器等，用于通过天线706实现通信装置的收发功能。
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。
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，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。
该总线系统除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
还应理解，本文中涉及的第一、第二、第三、第四以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围。
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。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
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。
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。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本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。
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。
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。

Claims (15)

  1. 一种通信方法，其特征在于，包括：
    生成下行控制信息DCI，其中，所述DCI包括用于指示所述DCI调度的单个传输块的指示信息，或者所述DCI调度的单个传输块与第一资源具有对应关系，或者，所述DCI包括所述DCI调度的单个传输块所对应的混合自动重传请求HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个传输块的DCI中任一传输块所使用的HARQ进程的第二编号的取值个数；
    向终端设备发送所述DCI。
  2. 一种通信方法，其特征在于，包括：
    接收来自网络设备的下行控制信息DCI，其中，所述DCI包括用于指示所述DCI调度的单个传输块的指示信息，或者，所述DCI调度的单个传输块与第一资源具有对应关系，或者，所述DCI包括所述DCI调度的单个传输块所对应的混合自动重传请求HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个传输块的DCI中传输块所使用的HARQ进程的第二编号的取值个数；
    根据所述DCI接收下行数据，或者发送上行数据。
  3. 一种通信装置，其特征在于，包括：
    处理器，用于生成下行控制信息DCI，其中，所述DCI包括用于指示所述DCI调度的单个传输块的指示信息，或者所述DCI调度的单个传输块与第一资源具有对应关系，或者，所述DCI包括所述DCI调度的单个传输块所对应的混合自动重传请求HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个传输块的DCI中任一传输块所使用的HARQ进程的第二编号的取值个数；
    收发单元，用于向终端设备发送所述DCI。
  4. 一种通信装置，其特征在于，包括：
    收发单元，用于接收网络设备发送的下行控制信息DCI，其中，所述DCI包括用于指示所述DCI调度的单个传输块的指示信息，或者，所述DCI调度的单个传输块与第一资源具有对应关系，或者，所述DCI包括所述DCI调度的单个传输块所对应的混合自动重传请求HARQ进程的第一编号，所述第一编号的取值个数多于用于调度两个传输块的DCI中任一传输块所使用的HARQ进程的第二编号的取值个数；
    处理器，用于根据所述DCI接收下行数据，或者发送上行数据。
  5. 根据权利要求1或2所述的方法，或者，3或4所述的装置，其特征在于，所述DCI还包括所述单个传输块对应的调制编码策略信息，新数据指示信息，冗余版本信息，预编码和传输层指示信息，编码块组CBG指示信息，秩RI指示信息，或，资源分配信息中的至少一个。
  6. 根据权利要求1或2或5所述的方法，或者，3-5中任一项所述的装置，其特征在于，所述指示信息为联合编码信息，所述联合编码信息还用于指示所述DCI中除所述指示信息之外的其他至少一个信息，其中，所述其他至少一个信息为以下信息中的至少一个：调制编码策略信息，新数据指示信息，冗余版本信息，预编码和传输层指示信息，编码块 组CBG指示信息，秩RI指示信息，或，资源分配信息。
  7. 根据权利要求1-2，或5-6中任一项所述的方法，或者，3-6中任一项所述的装置，其特征在于，所述第一资源为用于传输所述DCI的下行控制信道PDCCH的资源。
  8. 根据权利要求1-2，或5-7中任一项所述的方法，或者，3-7中任一项所述的装置，其特征在于，所述第一资源为用于对传输所述DCI的PDCCH进行加扰的加扰资源。
  9. 根据权利要求1-2，或5-8任一项所述的方法，或者，3-8中任一项所述的装置，其特征在于，所述第一资源与用于传输所述DCI的下行控制信道PDCCH相关。
  10. 根据权利要求1-2，或5-9任一项所述的方法，或者，3-9中任一项所述的装置，其特征在于，所述第二编号的取值范围是所述第一编号的取值范围的真子集。
  11. 一种通信装置，其特征在于，用于执行如权利要求1-2，或5-10任一项所述的方法。
  12. 一种计算机可读存储介质，包括计算机程序或指令，当其在计算机上运行时，使得计算机执行如1-2，或5-10任一项所述的方法。
  13. 一种计算机程序产品，包括计算机程序或指令，当其在计算机上运行时，使得计算机执行如1-2，或5-10任一项所述的方法。
  14. 一种通信装置，其特征在于，包括处理器，所述处理器与存储器耦合，所述处理器执行存储器中存储的程序或指令，使得所述通信装置执行如1-2，或5-10任一项所述的方法。
  15. 一种通信系统，包括如权利要求3，或，5-9中任一项所述的装置和如权利要求4-9中任一项所述的装置。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020164148A1 (zh) * 2019-02-15 2020-08-20 华为技术有限公司 一种数据传输方法和设备
CN115694731A (zh) * 2019-11-08 2023-02-03 中兴通讯股份有限公司 一种控制信息指示方法、通信节点及计算机可读存储介质

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109802765B (zh) * 2017-11-17 2022-03-29 华为技术有限公司 一种应答信息发送方法及装置
CN112567662B (zh) * 2018-08-10 2024-07-05 苹果公司 用于新空口(nr)的数据和控制传输增强
EP3716515A1 (en) * 2019-03-28 2020-09-30 TCL Communication Limited Scheduling multiple transfer blocks
EP3937560A4 (en) * 2019-03-29 2022-04-06 Huawei Technologies Co., Ltd. DATA TRANSMISSION METHOD AND DEVICE
JP7271709B2 (ja) * 2019-04-02 2023-05-11 オッポ広東移動通信有限公司 データ送信方法及び関連装置
CN111865515B (zh) * 2019-04-25 2022-04-05 华为技术有限公司 通信方法和通信装置
EP3955667A4 (en) 2019-04-30 2022-04-27 Huawei Technologies Co., Ltd. INFORMATION TRANSMISSION METHOD AND COMMUNICATION DEVICES
CN111684813A (zh) * 2019-06-14 2020-09-18 深圳市大疆创新科技有限公司 数据处理方法、系统、移动平台、终端及存储介质
CN112312417A (zh) * 2019-07-26 2021-02-02 大唐移动通信设备有限公司 资源确定方法及装置
US11985083B2 (en) * 2019-08-02 2024-05-14 Qualcomm Incorporated Operation modes for sidelink relay
CN114157723B (zh) * 2019-08-15 2023-08-22 华为技术有限公司 一种通信方法及装置
CN112449429B (zh) * 2019-09-05 2023-11-21 成都华为技术有限公司 信号传输方法及通信装置
WO2021062870A1 (zh) * 2019-10-02 2021-04-08 华为技术有限公司 一种通信方法及装置
WO2021184327A1 (en) * 2020-03-20 2021-09-23 Qualcomm Incorporated Association of transmission layers and codewords to enable uplink transmission with multiple codewords
WO2021185089A1 (en) * 2020-03-19 2021-09-23 Qualcomm Incorporated Configuration and indication for enabling uplink transmission with multiple codewords
CN113498205B (zh) * 2020-04-08 2023-04-07 展讯通信（上海）有限公司 一种传输反馈信息的方法及相关装置
CN113518350B (zh) * 2020-04-09 2024-09-27 维沃移动通信有限公司 调度方法和设备
CN113708900A (zh) * 2020-05-21 2021-11-26 华为技术有限公司 一种数据调度方法及装置
CN114466376B (zh) * 2020-11-10 2024-05-10 大唐移动通信设备有限公司 数据传输方法、装置、设备及存储介质
US12107662B2 (en) * 2021-08-17 2024-10-01 Charter Communications Operating, Llc Massive MIMO communication technique
WO2023211918A1 (en) * 2022-04-26 2023-11-02 Qualcomm Incorporated Scheduling of an uplink transmission of multiple transport blocks
CN117812740A (zh) * 2022-09-30 2024-04-02 华为技术有限公司 一种协作传输的数据调度的方法和装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101631374A (zh) * 2009-08-05 2010-01-20 中兴通讯股份有限公司 一种下行传输方式的指示方法及装置
CN102137504A (zh) * 2011-04-12 2011-07-27 电信科学技术研究院 一种调度多子帧传输的方法及装置
CN106537979A (zh) * 2014-07-31 2017-03-22 华为技术有限公司 用于多载波传输的系统和方法
US20170223673A1 (en) * 2016-02-01 2017-08-03 Ofinno Technologies, Llc Power control in a wireless device and wireless network

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101801097B (zh) * 2010-01-08 2015-05-20 中兴通讯股份有限公司 物理上行共享信道调度信息的指示方法
CN102714527B (zh) 2010-01-22 2015-04-01 Lg电子株式会社 用于在mimo无线通信系统中提供下行链路控制信息的方法和设备
WO2011102697A2 (ko) * 2010-02-22 2011-08-25 엘지전자 주식회사 다중 안테나 전송을 지원하는 무선 통신 시스템에서 상향링크 다중 코드워드 전송을 위한 하이브리드자동재송요구 전송 수행 방법 및 장치
US8270359B2 (en) * 2010-03-15 2012-09-18 Motorola Mobility Llc Antenna port information signaling in wireless communication system
KR101915271B1 (ko) 2010-03-26 2018-11-06 삼성전자 주식회사 무선 통신 시스템에서 자원 할당을 위한 하향링크 제어 지시 방법 및 장치
KR101681148B1 (ko) * 2010-04-09 2016-12-01 삼성전자주식회사 무선통신 시스템 및 그의 ｈａｒｑ 운용 방법
JP5265616B2 (ja) * 2010-05-18 2013-08-14 株式会社エヌ・ティ・ティ・ドコモ 無線通信システム
EP2574126B1 (en) * 2010-05-21 2018-12-05 Sharp Kabushiki Kaisha Mobile communication system, base station apparatus, mobile station apparatus and communication method
US9941998B2 (en) 2010-06-24 2018-04-10 Qualcomm Incorporated Control information signaling for MIMO transmissions
EP2664091A4 (en) * 2011-01-13 2017-11-01 Telefonaktiebolaget LM Ericsson (publ) Estimation of channel quality indicator using additional reference signals
US9973303B2 (en) * 2013-12-20 2018-05-15 Samsung Electronics Co., Ltd. Determining timing for transmission or reception of signaling in a coverage enhanced operating mode
US10893509B2 (en) * 2015-02-11 2021-01-12 Qualcomm Incorporated Multiple tri-state HARQ processes
EP3304995B1 (en) * 2015-06-05 2020-03-18 Telefonaktiebolaget LM Ericsson (PUBL) First communication device, second communication device and methods therein for sending and decoding, respectively, downlink information
KR101953969B1 (ko) * 2016-04-01 2019-03-04 아서스테크 컴퓨터 인코포레이션 무선 통신 시스템에서 설정된 리소스를 이용하여 전송을 향상시키는 방법 및 장치
CN110114994B (zh) * 2016-10-28 2022-04-19 株式会社Ntt都科摩 用户终端以及无线通信方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101631374A (zh) * 2009-08-05 2010-01-20 中兴通讯股份有限公司 一种下行传输方式的指示方法及装置
CN102137504A (zh) * 2011-04-12 2011-07-27 电信科学技术研究院 一种调度多子帧传输的方法及装置
CN106537979A (zh) * 2014-07-31 2017-03-22 华为技术有限公司 用于多载波传输的系统和方法
US20170223673A1 (en) * 2016-02-01 2017-08-03 Ofinno Technologies, Llc Power control in a wireless device and wireless network

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SAMSUNG: "Codeword-to-Layer Mapping for DL and UL NR MIMO", 3GPP TSG RAN WGI NR AD-HOC, R1-1701201, 20 January 2017 (2017-01-20), XP051222507 *
See also references of EP3664546A4

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020164148A1 (zh) * 2019-02-15 2020-08-20 华为技术有限公司 一种数据传输方法和设备
CN113412597A (zh) * 2019-02-15 2021-09-17 华为技术有限公司 一种数据传输方法和设备
EP3917049A4 (en) * 2019-02-15 2022-02-16 Huawei Technologies Co., Ltd. DATA TRANSMISSION METHOD AND DEVICE
CN113412597B (zh) * 2019-02-15 2022-12-30 华为技术有限公司 一种数据传输方法和设备
US11968668B2 (en) 2019-02-15 2024-04-23 Huawei Technologies Co., Ltd. Data transmission method and device
CN115694731A (zh) * 2019-11-08 2023-02-03 中兴通讯股份有限公司 一种控制信息指示方法、通信节点及计算机可读存储介质
CN115694731B (zh) * 2019-11-08 2023-11-10 中兴通讯股份有限公司 一种控制信息指示方法、通信节点及计算机可读存储介质
US12101784B2 (en) 2019-11-08 2024-09-24 Zte Corporation Control information indicating method, communication node and computer readable storage medium

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