WO2022027688A1 - Procédé et appareil de détermination d'un livre de codes de harq-ack - Google Patents

Procédé et appareil de détermination d'un livre de codes de harq-ack Download PDF

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Publication number
WO2022027688A1
WO2022027688A1 PCT/CN2020/108012 CN2020108012W WO2022027688A1 WO 2022027688 A1 WO2022027688 A1 WO 2022027688A1 CN 2020108012 W CN2020108012 W CN 2020108012W WO 2022027688 A1 WO2022027688 A1 WO 2022027688A1
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Prior art keywords
dci
harq
ack
priority
codeword
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PCT/CN2020/108012
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English (en)
Chinese (zh)
Inventor
李军
焦淑蓉
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华为技术有限公司
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Priority to PCT/CN2020/108012 priority Critical patent/WO2022027688A1/fr
Priority to CN202080104457.0A priority patent/CN116134770A/zh
Publication of WO2022027688A1 publication Critical patent/WO2022027688A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a method and apparatus for determining a HARQ-ACK codebook.
  • the terminal device When the terminal device receives the physical downlink shared channel (PDSCH) sent by the network device, the terminal device needs to send a hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback message to the network device, telling the Whether the transport block (TB) carried on the PDSCH by the network device has been successfully decoded. If the TB is successfully decoded, the terminal device will feedback an acknowledgement (acknowledgement, ACK); if the TB is not successfully decoded, the terminal device will feedback a negative acknowledgement (negative acknowledgement, NACK).
  • HARQ-ACK hybrid automatic repeat request acknowledgment
  • the HARQ-ACK feedback information is carried in a HARQ-ACK codebook and sent to the network device.
  • One HARQ-ACK codebook may include HARQ-ACK feedback information corresponding to one or more downlink control information (DCI).
  • DCI downlink control information
  • the HARQ-ACK codebook may also have a concept of priority.
  • the URLLC service corresponds to a high-priority HARQ-ACK codebook, which is used to carry HARQ-ACK feedback information for the data of the URLLC service
  • the eMBB service corresponds to a low-priority HARQ-ACK codebook, which is used to carry the HARQ-ACK codebook for the eMBB service.
  • HARQ-ACK feedback information for data Since the URLLC service has higher requirements on reliability and delay, how to send the HARQ-ACK codebook with high priority is a problem that needs to be solved.
  • the present application provides a method and apparatus for determining a HARQ-ACK codebook, which are used to determine the number of bits of HARQ-ACK feedback information corresponding to one DCI in a high-priority HARQ-ACK codebook.
  • an embodiment of the present application provides a method for determining a HARQ-ACK codebook.
  • the method can be executed by a terminal device, and can also be executed by a component (such as a chip or circuit) configured in the terminal device, which is described below in this application. , the method will be described by taking the terminal device executing the method as an example.
  • the method may include: the terminal device receives first configuration information from the network device, the first configuration information indicates that one DCI schedules at most two codewords; the terminal device receives the first DCI from the network device, where the first DCI is used for scheduling The first data, and the first DCI indicates a high priority; the terminal device sends a HARQ-ACK codebook to the network device, the HARQ-ACK codebook is a high-priority HARQ-ACK codebook, and the HARQ-ACK codebook in the HARQ-ACK codebook
  • the HARQ-ACK feedback information corresponding to the first DCI is included, and the number of bits of the HARQ-ACK feedback information is determined according to a codeword.
  • the terminal device when the network device is configured with a maximum number of codewords that can be scheduled by a DCI of 2, when the first DCI indicates a high priority, the terminal device can still use a codeword in the high-priority HARQ-ACK Information bits are reserved in the codebook for the HARQ feedback information corresponding to the first DCI, so that the size of the high-priority HARQ-ACK codebook can be effectively limited and the transmission performance of the high-priority HARQ-ACK codebook can be improved.
  • the determination of the number of bits of the HARQ-ACK feedback information according to a codeword may include: the number of bits of the HARQ-ACK information is 1 or N, where N is each The maximum number of CBGs in a transport block, where N is a positive integer greater than 1.
  • the first DCI indicating high priority may include: the first DCI includes a priority indicating field, where the priority indicating field indicates high priority; or, the first DCI The default priority is high priority.
  • the format of the first DCI is a first DCI format or a second DCI format, wherein the first DCI format supports scheduling of one codeword or two codewords, and the second DCI format supports scheduling of one codeword or two codewords.
  • the format supports scheduling only one codeword.
  • the first DCI when the first DCI is in the first DCI format, the first DCI schedules only one codeword.
  • an embodiment of the present application provides a method for determining a HARQ-ACK codebook.
  • the method can be executed by a network device or by a component (such as a chip or circuit) configured in the network device, which is described below in this application. , the method will be described by taking the network device executing the method as an example.
  • the method may include: the network device sends first configuration information to the terminal device, where the first configuration information indicates that one DCI schedules at most two codewords; the network device sends the first DCI to the terminal device, where the first DCI is used to schedule the first DCI data, and the first DCI indicates high priority; the network device receives the HARQ-ACK codebook from the terminal device, the HARQ-ACK codebook is a high-priority HARQ-ACK codebook, and the HARQ-ACK codebook includes HARQ-ACK feedback information corresponding to the first DCI, where the number of bits of the HARQ-ACK feedback information is determined according to a codeword.
  • the determination of the number of bits of the HARQ-ACK feedback information according to a codeword may include: the number of bits of the HARQ-ACK information is 1 or N, where N is each The maximum number of CBGs in a transport block, where N is a positive integer greater than 1.
  • the first DCI indicating high priority may include: the first DCI includes a priority indicating field, where the priority indicating field indicates high priority; The default priority is high priority.
  • the format of the first DCI is a first DCI format or a second DCI format, wherein the first DCI format supports scheduling of one codeword or two codewords, and the second DCI format supports scheduling of one codeword or two codewords.
  • the format supports scheduling only one codeword.
  • the first DCI when the first DCI is in the first DCI format, the first DCI schedules only one codeword.
  • an embodiment of the present application provides a communication device, the device has the function of implementing the terminal device in any possible design of the first aspect or the first aspect, and the device may be a terminal device or a terminal Chip included in the device.
  • the communication apparatus may also have the function of implementing the second aspect or the network device in any possible design of the second aspect, and the apparatus may be a network device or a chip included in the network device.
  • the functions of the above communication apparatus may be implemented by hardware, or by executing corresponding software in hardware, and the hardware or software includes one or more modules or units or means corresponding to the above functions.
  • the structure of the apparatus includes a processing module and a transceiver module, wherein the processing module is configured to support the apparatus to perform the corresponding functions of the terminal device in the first aspect or any design of the first aspect , or perform the corresponding function of the network device in the second aspect or any design of the second aspect.
  • the transceiver module is used to support the communication between the device and other communication devices. For example, when the device is a terminal device, it can receive the first configuration information from the network device.
  • the communication device may also include a storage module coupled to the processing module, which stores program instructions and data necessary for the device.
  • the processing module may be a processor
  • the communication module may be a transceiver
  • the storage module may be a memory
  • the memory may be integrated with the processor, or may be provided separately from the processor.
  • the structure of the apparatus includes a processor and may also include a memory.
  • the processor is coupled to the memory and can be used to execute computer program instructions stored in the memory to cause the apparatus to perform the method in the first aspect or any possible design of the first aspect above, or the second aspect or the second aspect above method in any of the possible designs.
  • the apparatus further includes a communication interface to which the processor is coupled.
  • the communication interface can be a transceiver or an input/output interface; when the device is a chip included in the network device or a chip included in the terminal device, the communication interface can be the input of the chip /Output Interface.
  • the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.
  • an embodiment of the present application provides a chip system, including: a processor, where the processor is coupled to a memory, and the memory is used to store a program or an instruction, when the program or instruction is executed by the processor , so that the chip system implements the first aspect or the method in any possible design of the first aspect, or implements the method in the second aspect or any possible design of the second aspect.
  • the chip system further includes an interface circuit, and the interface circuit is used to exchange code instructions to the processor.
  • processors in the chip system, and the processors may be implemented by hardware or software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor implemented by reading software codes stored in memory.
  • the memory can be integrated with the processor, or can be provided separately from the processor.
  • the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be provided on different chips.
  • an embodiment of the present application provides a computer-readable storage medium on which a computer program or instruction is stored, and when the computer program or instruction is executed, causes the computer to execute the first aspect or any one of the first aspects.
  • an embodiment of the present application provides a computer program product, when the computer reads and executes the computer program product, the computer is made to execute the method in the first aspect or any possible design of the first aspect, Or perform the method in the second aspect or any possible design of the second aspect.
  • an embodiment of the present application provides a communication system, where the communication system includes a network device and at least one terminal device.
  • the communication system may further include core network equipment.
  • FIG. 1 is a schematic diagram of a network architecture of a communication system to which an embodiment of the application is applicable;
  • FIG. 2 is a schematic flowchart of a method for determining a HARQ-ACK codebook provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of DCI scheduling PDSCH and PUCCH in an embodiment of the present application
  • FIG. 4 and FIG. 5 are schematic structural diagrams of a communication device according to an embodiment of the application.
  • FIG. 6 and FIG. 7 are schematic structural diagrams of another communication apparatus provided by an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • 5G fifth generation mobile communication systems or new radio (NR) systems
  • NR new radio
  • FIG. 1 is a schematic diagram of a network architecture of a communication system provided by the present application.
  • the communication system includes a core network device 110, a radio access network device 120 and at least one terminal device (such as the terminal device 130 and the terminal device 140 in FIG. 1).
  • the terminal equipment is wirelessly connected to the wireless access network equipment, and the wireless access network equipment is wirelessly or wiredly connected to the core network equipment.
  • the core network device and the radio access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated on the same physical device, or they can be one physical device. It integrates the functions of some core network equipment and some functions of the wireless access network equipment.
  • Terminal equipment can be fixed or movable. FIG.
  • the communication system may also include other network devices, for example, may also include wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 .
  • the embodiments of the present application do not limit the number of core network devices, wireless access network devices, and terminal devices included in the communication system.
  • the wireless access network devices mentioned in the embodiments of the present application may correspond to different devices in different communication systems, for example, the 5G system corresponds to the 5G access network devices, such as gNB or ng-eNB, The 4G system corresponds to the access network equipment in 4G, such as eNB or en-gNB.
  • the 5G system corresponds to the 5G access network devices, such as gNB or ng-eNB
  • the 4G system corresponds to the access network equipment in 4G, such as eNB or en-gNB.
  • the embodiments of the present application may be applicable to uplink signal transmission, may also be applicable to downlink signal transmission, and may also be applicable to device to device (device to device, D2D) signal transmission.
  • the sending device is a terminal device, and the corresponding receiving device is a wireless access network device.
  • the sending device is a terminal device, and the corresponding receiving device is also a terminal device.
  • the radio access network device and the terminal device can communicate through licensed spectrum, communicate through unlicensed spectrum, or communicate through licensed spectrum and unlicensed spectrum at the same time.
  • the network device and the terminal device can communicate through the frequency spectrum below 6 GHz (gigahertz, GHz), and can also communicate through the frequency spectrum above 6 GHz, and can also use the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz for communication at the same time.
  • This embodiment of the present application does not limit the spectrum resources used between the network device and the terminal device.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. It can be seen that, with the evolution of the communication network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • the terminal device involved in the embodiments of this application is a device with a wireless transceiver function.
  • the terminal equipment is wirelessly connected to the wireless access network equipment, so as to be connected to the communication system.
  • a terminal device may also be referred to as a terminal, user equipment (UE), a mobile station, a mobile terminal, and the like.
  • the terminal equipment can be mobile phone, tablet computer, computer with wireless transceiver function, virtual reality terminal equipment, augmented reality terminal equipment, wireless terminal in industrial control, wireless terminal in unmanned driving, wireless terminal in remote surgery, smart grid wireless terminals in transportation security, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. Wait.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • Use such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • the terminal device may also be an on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units, and the vehicle passes the built-in on-board module, on-board module, on-board component, on-board chip or on-board unit.
  • a unit may implement the methods of the present application.
  • the wireless access network device involved in the embodiments of the present application is a device in the network for connecting a terminal device to a wireless network device.
  • a radio access network device is a node in a radio access network, which may also be called a base station, or a RAN node (or device).
  • a radio access network device may be referred to as a network device. It should be noted that the network devices in the following all refer to wireless access network devices.
  • the radio access network equipment may be a base station (base station), an evolved base station (evolved NodeB, eNodeB) in an LTE system or an evolved LTE system (LTE-Advanced, LTE-A), a next-generation base station ( next generation NodeB (gNB), transmission reception point (TRP), base band unit (BBU), WiFi access point (AP), base station in future mobile communication system or WiFi system access node, etc.
  • the radio access network device may also be a module or unit that completes some functions of the base station, for example, may be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU).
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device.
  • the radio access network device may be a CU node, a DU node, or an access network device including a CU node and a DU node.
  • the CU node is used to support radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP), service data adaptation protocol (service data adaptation protocol, SDAP) and other protocols;
  • DU node Used to support radio link control (radio link control, RLC) layer protocol, medium access control (medium access control, MAC) layer protocol and physical layer protocol.
  • PDSCH physical downlink control channel (PDCCH), physical uplink shared channel (physical uplink shared channel, PUSCH) and PUCCH are only used as downlink data channels of the physical layer,
  • PDCH physical downlink control channel
  • PUSCH physical uplink shared channel
  • PUCCH Physical uplink shared channel
  • the data channel and the control channel may have different names, which are not limited in the embodiments of the present application.
  • the radio access network equipment and terminal equipment in the embodiments of the present application can be deployed on land, including indoors or outdoors, handheld or vehicle mounted; can also be deployed on water; and can also be deployed on airplanes, balloons, and artificial satellites in the air.
  • the embodiments of the present application do not limit the application scenarios of the network device and the terminal device.
  • “Plurality” refers to two or more than two, and in view of this, “plurality” may also be understood as “at least two” in the embodiments of the present application.
  • “At least one” can be understood as one or more, such as one, two or more. For example, including at least one means including one, two or more, and does not limit which ones are included. For example, if at least one of A, B, and C is included, then A, B, C, A and B, A and C, B and C, or A and B and C may be included. Similarly, the interpretation of descriptions such as “at least one" is similar.
  • ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority, or importance of multiple objects. Moreover, the description of “first” and “second” does not limit the objects to be necessarily different.
  • one DCI carried on the PDCCH is allowed to schedule more than one codeword (codeword), and the network device can pass the high-level parameters as
  • the terminal equipment configures the maximum number of codewords that can be scheduled by a DCI, and then the terminal equipment reserves the corresponding number of information bits for each DCI in the HARQ-ACK codebook according to the maximum number of codewords.
  • not all DCI formats (formats) can support scheduling more than one codeword. If a DCI format that cannot support scheduling more than one codeword is used to schedule high-priority data, the terminal device will still schedule the highest priority data.
  • the number of codewords reserves the number of information bits for the DCI in the high-priority HARQ-ACK codebook, which will lead to waste of information bits in the high-priority codebook, thereby affecting the performance of the high-priority HARQ-ACK codebook.
  • FIG. 2 is a schematic flowchart of a method for determining a HARQ-ACK codebook provided by an embodiment of the present application.
  • the method includes:
  • Step S201 The network device sends first configuration information to the terminal device, where the first configuration information indicates that one DCI schedules at most two codewords.
  • the terminal device may receive the first configuration information from the network device.
  • the first configuration information is used to configure the terminal device with a maximum number of codewords that can be scheduled by a DCI, and the maximum number of codewords may be 2, indicating that each DCI can schedule at most two codewords.
  • the first configuration information may be a high-level parameter sent by the network device to the terminal device, such as maxNrofCodeWordsScheduledByDCI.
  • the codeword can be understood as a TB processed by a series of physical layers (for example, it may include TB cyclic redundancy check (cyclic redundancy check, CRC) addition, code block (code block, CB) segmentation, CB CRC addition, data block obtained after channel coding, rate matching, etc.).
  • a TB corresponds to a codeword.
  • a DCI schedules a codeword it means that the PDSCH scheduled by the DCI carries a TB, and the terminal device needs to send the HARQ-ACK feedback information for this TB to the network device; similarly, if One DCI schedules two codewords, which means that the PDSCH scheduled by the DCI carries two TBs, and the terminal device needs to send HARQ-ACK feedback information for the two TBs to the network device.
  • Step S202 the network device sends the first DCI to the terminal device, where the first DCI is used to schedule the first data, and the first DCI indicates a high priority.
  • the terminal device may receive the first DCI from the network device.
  • the first data is downlink data sent by the network device to the terminal device.
  • the first data is carried on the PDSCH channel, and the first data may include the data scheduled with the first DCI.
  • the terminal device can send HARQ-ACK feedback information for the first data to the network device, and the HARQ-ACK feedback information can be carried on a physical uplink control channel (PUCCH) superior.
  • PUCCH physical uplink control channel
  • the first DCI indicates a high priority, and correspondingly, the HARQ-ACK feedback information corresponding to the first DCI needs to be fed back through a high-priority HARQ-ACK codebook.
  • the first DCI may indicate the high priority in an explicit manner, or may indicate the high priority in an implicit manner.
  • indicating the high priority in an explicit manner may be, when the first DCI includes a priority indication field, the first DCI may indicate the high priority through the priority indication field.
  • the priority indication field may be a flag bit occupying 1 bit in the first DCI. When the value of the flag bit is set to "1", it is used to indicate a high priority.
  • the high priority may be indicated by the default priority of the first DCI, that is, the default priority of the first DCI Configured as high priority.
  • DCI formats support different priority indications.
  • Table 1 shows the support of priority indication by several DCI formats (formats) currently used for scheduling PDSCH.
  • DCI format 1_0 does not support priority indication, that is, the DCI of DCI format 1_0 does not include a priority indication field, therefore, the PDSCH scheduled by the DCI format 1_0 is low priority by default.
  • DCI format 1_1 supports priority indication, that is, the DCI of DCI format 1_1 includes a priority indication field, and the priority indication field may be 1 bit. Therefore, the PDSCH scheduled by this DCI format 1_1 may be of high priority (for example, for carrying The data of the URLLC service) can also be of low priority (for example, the data used to carry the eMBB service).
  • the priority indication field indicates a high priority, it may indicate that the scheduled PDSCH has a high priority
  • the priority indication field indicates a low priority
  • the DCI format 1_1 supports priority indication and requires the network device to be configured through a high-level parameter
  • the high-level parameter may be, for example, priorityIndicatorForDCI-Format1-1-r16.
  • DCI format 1_2 also supports priority indication, that is, the DCI of DCI format 1_2 includes a priority indication field, and the priority indication field can be 1 bit. Therefore, the PDSCH scheduled by this DCI format 1_2 can be of high priority. Can also be low priority. Specifically, when the priority indication field indicates a high priority, it may indicate that the scheduled PDSCH has a high priority, and when the priority indication field indicates a low priority, it may indicate that the scheduled PDSCH has a low priority.
  • DCI format 1-2 supports priority indication and also requires the network device to be configured through high-level parameters, and the high-level parameters can be, for example, priorityIndicatorForDCI-Format1-2-r16.
  • the first DCI in this embodiment of the present application may be a first DCI format or a second DCI format, where the first DCI format supports scheduling of one codeword or two codewords, and the second DCI format only supports scheduling of one codeword. Since the maximum number of scheduled codewords supported by different DCI formats is also different, when the network device configures the maximum number of scheduled codewords for one DCI to be 2, not all DCI formats can support scheduling two codewords. Currently, only DCI format 1_1 can support scheduling two codewords. Neither DCI format 1_0 nor DCI format 1_2 support scheduling two codewords, but only one codeword. It can be seen from this that the first DCI format in the embodiment of the present application may be DCI format 1_1, and the second DCI format may be DCI format 1_2.
  • the first DCI when the first DCI is in the first DCI format, the first DCI is used to schedule a codeword, for example, by using a modulation and coding scheme in the first DCI , the value of the MCS) field is set to 26, and the value of the redundancy version (redundancy Version, RV) field is set to 1.
  • the MCS corresponding to the second codeword is set to 26 and the RV is set to 1, To enable and disable the second codeword, thereby restricting the first DCI of the first DCI format to scheduling only one codeword.
  • Step S203 the terminal device sends a HARQ-ACK codebook to the network device, the HARQ-ACK codebook is a high-priority HARQ-ACK codebook, and the HARQ-ACK codebook includes HARQ-ACK feedback information corresponding to the first DCI , the number of bits of the HARQ-ACK feedback information is determined according to a codeword.
  • the network device can receive the HARQ-ACK codebook from the terminal device.
  • the HARQ-ACK codebook may be carried on the PUCCH channel. It should be understood that the HARQ-ACK codebook can also be carried on the PUSCH channel.
  • the number of bits of the HARQ-ACK feedback information corresponding to the first DCI is determined according to a codeword, and the number of bits of the HARQ-ACK information corresponding to the first DCI may be 1 or N, where N is each The maximum number of code block groups (CBGs) in the transport block, where N is a positive integer greater than 1.
  • CBGs code block groups
  • the number of bits of the HARQ-ACK information corresponding to the first DCI may be N.
  • the network device is configured with a CBG, it indicates that the data transmission scheduled by the first DCI is CBG-based transmission, and the several CBs are further divided into N CBGs, where one CBG may include one or more CBs. In this way, HARQ-ACK information can be fed back separately for each CBG in one TB, one CBG needs one information bit, and N CBGs need N information bits in total.
  • the terminal device may receive second configuration information from the network device, where the second configuration information is used to indicate the maximum number N of CBGs per TB.
  • the number of bits of the HARQ-ACK information corresponding to the first DCI may be 1, indicating that the data transmission scheduled by the first DCI is TB-based data transmission, and the terminal device feeds back 1-bit HARQ-ACK for the entire TB.
  • ACK information can be.
  • the terminal device if the terminal device does not receive DCI, the terminal device also needs to feed back NACK information for the corresponding PDSCH candidate (candidate). 1 codeword to determine the number of NACK bits.
  • the terminal device misses DCI detection, the terminal device also needs to fill NACK in the corresponding position, and the filling NACK bits are also determined according to a codeword.
  • the semi-static codebook needs to feed back HARQ-ACK information for all PDSCH candidates, so the size of the semi-static codebook is fixed and has nothing to do with the number of PDSCHs actually scheduled.
  • the dynamic codebook feeds back HARQ-ACK information according to the number of actually scheduled PDSCHs, so its size is related to the number of actually scheduled PDSCHs or DCIs, so it is called a dynamic codebook.
  • the terminal device can still use only one codeword in the high-priority HARQ- In the ACK codebook, information bits are reserved for the HARQ feedback information corresponding to the first DCI, so that the size of the high-priority HARQ-ACK codebook can be effectively limited, the transmission performance of the high-priority HARQ-ACK codebook can be improved, and the If the first DCI does not support scheduling two codewords, but the terminal device uses two codewords to reserve information bits for the HARQ-ACK information corresponding to the first DCI in the HARQ-ACK codebook with high priority, resulting in The problem of waste of information bits.
  • the terminal device may also determine the number of bits of the HARQ-ACK feedback information corresponding to the first DCI according to the DCI format detected by the configuration. Specifically, if the network device is only configured with the second DCI format, the terminal device only needs to detect the DCI in the second DCI format, such as DCI format 1_2. At this time, after receiving the DCI for scheduling downlink data from the network device, the terminal device can directly determine the number of bits of the HARQ-ACK feedback information corresponding to the DCI according to a codeword.
  • the number of bits of HARQ-ACK feedback information in the HARQ-ACK codebook with high priority is determined according to a codeword
  • the number of bits of HARQ-ACK feedback information in the HARQ-ACK codebook with low priority is also determined according to a codeword Word OK.
  • the double codeword can be configured only when the first DCI format is configured, otherwise the double codeword cannot be configured.
  • the terminal device If the network device is only configured with the first DCI format, the terminal device only needs to detect the DCI in the first DCI format, such as DCI format 1_1. At this time, after receiving the DCI for scheduling downlink data from the network device, the terminal device may determine the number of bits of the HARQ-ACK feedback information corresponding to the DCI according to the two codewords.
  • the terminal device needs to detect the DCI in the first DCI format and the DCI in the second DCI format. At this time, after receiving the DCI for scheduling downlink data from the network device, the terminal device can determine the number of bits of the HARQ-ACK feedback information corresponding to the DCI according to the priority indicated by the DCI, and the DCI can indicate in an explicit manner High priority or low priority can also be indicated in an implicit way, which is not limited.
  • the number of bits of the HARQ-ACK feedback information corresponding to the DCI is determined according to one codeword, and when the DCI indicates a low priority, the number of bits of the HARQ-ACK feedback information corresponding to the DCI is determined according to two codewords .
  • FIG. 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device 400 includes a transceiver module 410 and a processing module 420 .
  • the communication apparatus can be used to implement the functions related to the terminal device in any of the foregoing method embodiments.
  • the communication device may be a terminal device, such as a handheld terminal device or a vehicle-mounted terminal device; the communication device may also be a chip or circuit included in the terminal device, or a device including the terminal device, such as various types of vehicles.
  • the transceiver module 410 is configured to receive first configuration information from the network device, the first configuration The information indicates that one DCI schedules at most two codewords; the transceiver module 410 is further configured to receive the first DCI from the network device, the first DCI is used to schedule the first data, and the first DCI indicates a high priority;
  • the processing module 420 is configured to generate a HARQ-ACK codebook, the HARQ-ACK codebook is a high-priority HARQ-ACK codebook, and the HARQ-ACK codebook includes HARQ-ACK feedback information corresponding to the first DCI, the The number of bits of the HARQ-ACK feedback information is determined according to a codeword; the transceiver module 410 is further configured to send the HARQ-ACK codebook to the network device.
  • the processing module 420 is further configured to: determine the number of bits of the HARQ-ACK feedback information according to a codeword, where the number of bits of the HARQ-ACK information is 1 or N, so The above N is the maximum number of CBGs in each transport block, and N is a positive integer greater than 1.
  • the processing module 420 involved in the communication apparatus may be implemented by at least one processor or a processor-related circuit component, and the transceiver module 410 may be implemented by at least one transceiver or a transceiver-related circuit component or a communication interface.
  • the operations and/or functions of each module in the communication device are respectively to implement the corresponding flow of the method shown in FIG. 2 , and are not repeated here for brevity.
  • the communication device may also include a storage module, which may be used to store data and/or instructions, and the transceiver module 410 and/or the processing module 420 may read the data and/or instructions in the access module, Thereby, the communication device can implement the corresponding method.
  • the memory module can be implemented, for example, by at least one memory.
  • the above-mentioned storage module, processing module, and transceiver module may exist separately, or all or part of the modules may be integrated, for example, the storage module and the processing module are integrated, or the processing module and the transceiver module are integrated.
  • FIG. 5 is another schematic structural diagram of a communication device provided in an embodiment of the present application.
  • the communication device may be a terminal device, and the communication device may be used to implement the functions related to the terminal device in any of the foregoing method embodiments.
  • the terminal device takes a mobile phone as an example.
  • the terminal device includes a processor, may also include a memory, and of course, may also include a radio frequency circuit, an antenna, an input and output device, and the like.
  • the processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, and process data of software programs.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency 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. 5 only one memory and processor are shown in FIG. 5 . In an actual end device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and the radio frequency circuit with a transceiver function may be regarded as a transceiver unit of the terminal device, and the processor with a processing function may be regarded as a processing unit of the terminal device.
  • the terminal device includes a transceiver unit 510 and a processing unit 520 .
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, or the like.
  • the processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like.
  • the device for implementing the receiving function in the transceiver unit 510 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 510 may be regarded as a transmitting unit, that is, the transceiver unit 510 includes a receiving unit and a transmitting unit.
  • the transceiver unit may also sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like.
  • the transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
  • transceiving unit 510 is configured to perform the sending and receiving operations on the terminal device side in the above method embodiments
  • processing unit 520 is configured to perform other operations on the terminal device in the above method embodiments except the transceiving operations.
  • FIG. 6 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • the communication device 600 includes a transceiver module 610 and a processing module 620 .
  • the communication apparatus may be used to implement the functions related to the network device in any of the foregoing method embodiments.
  • the communication means may be a network device or a chip or circuit included in the network device.
  • the transceiver module 610 is configured to send first configuration information to the terminal device, where the first configuration information Indicates that one DCI schedules at most two codewords; the transceiver module 610 is further configured to send the first DCI to the terminal device, where the first DCI is used to schedule the first data, and the first DCI indicates a high priority; the The transceiver module 610 is further configured to receive a HARQ-ACK codebook from the terminal device, where the HARQ-ACK codebook is a high-priority HARQ-ACK codebook, and the HARQ-ACK codebook includes the HARQ-ACK codebook corresponding to the first DCI ACK feedback information; the processing module 620 is configured to determine the number of bits of the HARQ-ACK feedback information according to a codeword.
  • the processing module 620 is specifically configured to: determine that the number of bits of the HARQ-ACK information is 1 or N, where N is the maximum number of CBGs in each transport block, and N is greater than 1 positive integer of .
  • the processing module 620 involved in the communication apparatus may be implemented by at least one processor or processor-related circuit components, and the transceiver module 610 may be implemented by at least one transceiver or transceiver-related circuit components or communication interfaces.
  • the operations and/or functions of each module in the communication device are respectively to implement the corresponding flow of the method shown in FIG. 2 , and are not repeated here for brevity.
  • the communication device may further include a storage module, which may be used to store data and/or instructions, and the transceiver module 610 and/or the processing module 620 may read the data and/or instructions in the access module, Thereby, the communication device can implement the corresponding method.
  • the memory module can be implemented, for example, by at least one memory.
  • the above-mentioned storage module, processing module, and transceiver module may exist separately, or all or part of the modules may be integrated, for example, the storage module and the processing module are integrated, or the processing module and the transceiver module are integrated.
  • FIG. 7 is another schematic structural diagram of a communication device provided in an embodiment of the present application.
  • the communication apparatus may specifically be a network device, such as a base station, for implementing the functions related to the network device (eg, the first network device or the target network device) in any of the foregoing method embodiments.
  • the network equipment includes: one or more radio frequency units, such as a remote radio unit (remote radio unit, RRU) 701 and one or more baseband units (baseband unit, BBU) 702.
  • the RRU 701 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 7011 and a radio frequency unit 7012.
  • the RRU 701 part is mainly used for the transceiver of radio frequency signals and the conversion of radio frequency signals and baseband signals.
  • the part of the BBU 702 is mainly used to perform baseband processing, control the base station, and the like.
  • the RRU 701 and the BBU 702 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 702 is the control center of the base station, which can also be called a processing unit, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spread spectrum.
  • the BBU 702 may be used to control the base station to perform the operation procedures related to the network device in the foregoing method embodiments.
  • the BBU 702 may be composed of one or more single boards, and the multiple single boards may jointly support a wireless access network (such as an LTE network) with a single access indication, or may respectively support a wireless access network with different access standards.
  • Wireless access network (such as LTE network, 5G network or other network).
  • the BBU 702 may also include a memory 7021 and a processor 7022, and the memory 7021 is used to store necessary instructions and data.
  • the processor 7022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the sending operation in the foregoing method embodiments.
  • the memory 7021 and the processor 7022 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • An embodiment of the present application further provides a chip system, including: a processor, where the processor is coupled with a memory, the memory is used to store a program or an instruction, and when the program or instruction is executed by the processor, the The chip system implements a method corresponding to a terminal device or a method corresponding to a network device in any of the foregoing method embodiments.
  • the number of processors in the chip system may be one or more.
  • the processor can be implemented by hardware or by software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor implemented by reading software codes stored in memory.
  • the memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.
  • the memory can be a non-transitory processor, such as a read-only memory ROM, which can be integrated with the processor on the same chip, or can be provided on different chips.
  • the setting method of the processor is not particularly limited.
  • the system-on-chip may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC), It can also be a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller).
  • controller unit, MCU it can also be a programmable logic device (PLD) or other integrated chips.
  • each step in the above method embodiments may be implemented by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the method steps disclosed in conjunction with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • Embodiments of the present application further provide a computer-readable storage medium, where computer-readable instructions are stored in the computer storage medium, and when the computer reads and executes the computer-readable instructions, the computer is made to execute any of the foregoing method embodiments method in .
  • Embodiments of the present application further provide a computer program product, which, when the computer reads and executes the computer program product, causes the computer to execute the method in any of the above method embodiments.
  • An embodiment of the present application further provides a communication system, where the communication system includes a network device and at least one terminal device.
  • the communication system may further include a core network device.
  • processors mentioned in the embodiments of the present application may be a CPU, other general-purpose processors, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SCRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
  • the memory storage module
  • memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and 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 in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk and other mediums that can store program codes.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente demande concerne un procédé et un appareil de détermination d'un livre de codes de HARQ-ACK. Selon le procédé : dans un cas où un dispositif de réseau configure une information DCI pour programmer jusqu'à deux mots de code, lorsqu'un dispositif de terminal reçoit une première information DCI en provenance du dispositif de réseau et que la première information DCI indique une priorité élevée, le dispositif de terminal peut réserver, selon un mot de code, un bit d'information pour une information de réponse à une HARQ correspondant à la première information DCI dans un livre de codes de HARQ-ACK de priorité élevée. Par conséquent, la taille du livre de codes de HARQ-ACK de priorité élevée peut être efficacement limitée, et la performance de transmission du livre de codes de HARQ-ACK de priorité élevée est améliorée.
PCT/CN2020/108012 2020-08-07 2020-08-07 Procédé et appareil de détermination d'un livre de codes de harq-ack WO2022027688A1 (fr)

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PCT/CN2020/108012 WO2022027688A1 (fr) 2020-08-07 2020-08-07 Procédé et appareil de détermination d'un livre de codes de harq-ack
CN202080104457.0A CN116134770A (zh) 2020-08-07 2020-08-07 一种确定harq-ack码本的方法及装置

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