Abstract: This application provides methods and apparatuses for sending a HARQ-ACK feedback codebook. One example method includes detecting DCI in a plurality of time units corresponding to at least one carrier, where a type of the DCI is a first DCI type or a second DCI type, where the first DCI is used to indicate to feed back CBG-level HARQ-ACK information for data scheduled by the first DCI, and where the second DCI is used to indicate to feed back TB-level HARQ-ACK information for data scheduled by the second DCI. A HARQ-ACK feedback codebook is then sent to a network device, where the codebook includes HARQ-ACK information of at least one piece of data scheduled by the DCI, and the HARQ-ACK feedback codebook is determined according to the type of the DCI and a type of the HARQ-ACK feedback codebook.

Abstract: Embodiments of this application provide a method for processing information bits in a wireless communication network. A communication device receives a radio resource control (RRC) signaling, wherein the RRC signaling comprises time window information and time unit format information, wherein the time window information comprises a hybrid automatic repeat request (HARQ) time sequence K1 set, wherein K1 is a time relationship between a time unit of a physical downlink shared channel (PDSCH) and a time unit of a physical uplink control channel (PUCCH), or wherein the K1 is a time relationship between a time unit of a (PDSCH) and a time unit of a physical uplink shared channel (PUSCH). The device determines HARQ feedback information based on the time window information and the time unit format information and sends the HARQ feedback information.

Abstract: This application provides a communication method, an access network device, and a terminal. The communication method includes: monitoring, by a terminal after completing initial transmission of first uplink data in a first-type transmission mode, a first downlink control channel sent by an access network device, where the first downlink control channel carries first downlink control information, the first-type transmission mode includes performing grant-free uplink data transmission based on radio resource control configuration signaling or based on radio resource control reconfiguration signaling and not based on layer 1 signaling, and the first downlink control information includes HARQ feedback information for the first uplink data, retransmission scheduling information for the first uplink data, or scheduling information for second uplink data; and detecting, by the terminal, the first downlink control information on the first downlink control channel.

Abstract: In a scheduling method, a first device configures a blind detection parameter of a control channel based on a carrier type or a carrier group; or separately configures a blind detection period for different carriers; or configures a blind detection period for a USS and a CSS of a control channel; or configures a blind detection period for different downlink control information DCI; and then, sends configuration signaling that carries the blind detection parameter (which may include the blind detection period), where the blind detection parameter is used by a second device to perform blind detection on the control channel.

Abstract: This application provides a control information transmission method and a device, and relates to the wireless communications field, to improve data transmission efficiency. The method includes: determining, by a network device, first indication information, where the first indication information is used to indicate whether information transmission on a first time-frequency resource is affected; sending, by the network device, the first indication information through a physical downlink control channel; and receiving, by a terminal device, the first indication information, and determining, based on the first indication information, whether information transmission on a third time-frequency resource is affected, where the third time-frequency resource is a time-frequency resource that is used for downlink information transmission between the terminal device and the network device.

Abstract: This application provides a control information transmission method, a terminal device, and a network device. The method includes: determining, by a terminal device, a bit length of downlink control information DCI based on a location of a target first time unit in a second time unit, where the DCI includes time domain resource location information, the time domain resource location information is used to indicate at least one of time domain length information of a third time unit and time domain start location information for data transmission scheduled based on the DCI, the DCI is carried in the target first time unit, and a time domain length of the third time unit is less than or equal to a time domain length of the second time unit; and receiving, by the terminal device, the DCI from a network device.

Abstract: This application relates to the field of wireless communication, and in particular, to a wireless communication method and a device. This application provides a method, including: if a time unit used to transmit control information is different from a time unit used to transmit data, and the control information is related to the data, determining a time sequence based on a same time unit.

Abstract: This application relates to the field of wireless communications technologies, and in particular, to a data transmission method, an apparatus, and a system. random access resource information: receiving, by user equipment UE, data from a first access network device to which a serving cell belongs; sending, by the UE, a decoding result of the data to the first access network device and a second access network device to which a coordinating cell belongs; and if the decoding result is negative acknowledgment NACK signaling, receiving, by the UE from the first access network device, the data that is retransmitted, and receiving, by the UE, the data from the second access network device.

Abstract: Various embodiments provide a data communication method. Under the method, a transmit end maps each code block group CBG in N CBGs to each layer in a corresponding layer group based on a correspondence between the N CBGs and N layer groups. Each layer group includes at least one layer, and N is a positive integer. The transmit end then sends data to a receive end. T transport block corresponding to the data includes the N CBGs. In this way, a mapping relationship between a CBG and a layer group is established by grouping layers, so as to improve data reception quality, through interference cancellation, for transmission among different layer groups, and ensure adaptivity to a CBG-based retransmission feedback, thereby optimizing transmission performance of an entire communications system.

Abstract: This application provides a data transmission method, a terminal device, and an access network device. The data transmission method includes: receiving, by a terminal device, information, sent by an access network device, about a carrier corresponding to the terminal device; determining, based on the information about the carrier, a process quantity corresponding to the carrier; and transmitting data based on the process quantity corresponding to the carrier. In this way, the process quantity can be determined accurately and efficiently, thereby improving data transmission reliability.

Abstract: A communication method and apparatus the method including sending downlink control information, where the downlink control information indicates K times of transmission of a first transport block, where K is an integer greater than 1, and where sizes of at least one of frequency-domain resources or time-domain resources occupied by at least two times of transmission during the K times of transmission are different, and transmitting the first transport block for K times according to the downlink control information.

Abstract: A method for determining time information is disclosed. The method includes: obtaining, by a network node, information sent by a terminal device; and determining, by the network node, at least one of the following based on the information: a first time interval between downlink scheduling and downlink data transmission, a second time interval between the downlink data transmission and a feedback message sent by the terminal device after the terminal device receives downlink data, and a third time interval between uplink scheduling and uplink data transmission, where the information may include at least one of a subcarrier spacing, an operating band, and a bandwidth that are supported by the terminal device, and further include a first smallest value and/or a second smallest value and/or a third smallest value corresponding to the at least one item. Therefore, flexibility and accuracy of determining the time information are improved.

Abstract: A component carrier grouping method and a device are provided. The method includes: grouping, by a network device, a plurality of component carriers configured for a terminal into at least one component carrier group of a first type, the terminal aggregates feedback information corresponding to the plurality of component carriers and feeds back the aggregated feedback information to the network device over one component carrier; and sending, by the network device, first grouping configuration information to the terminal.

Abstract: Embodiments of this application provide a data processing method and apparatus. The method includes: receiving, by a first device, control information, where the control information includes information about a first resource and information about a HARQ process; further receiving, by the first device on a second resource, data associated with the control information; and placing the data into a buffer of a HARQ process of a HARQ entity associated with the first resource. The associated data is sent on the plurality of resources.

Abstract: This application provides a data transmission method. The method includes: when transmitting at least one transport block TB for the first time, sending, by a first device, first control information to a second device, where the first control information includes a modulation and coding scheme MCS field; and when retransmitting the TB, sending, by the first device, second control information to the second device, where the second control information includes a first field but does not include the MCS field, and the first field includes information about a relationship between retransmitted data and the TB.

Abstract: A feedback method is provided, including receiving, by a first device, data sent by a second device, and sending, by the first device to the second device, feedback information indicating whether the data is successfully received. In this method, a quantity of bits of the feedback information is associated with a size of a transmission time unit in a communications system. By using the foregoing method, the quantity of bits of the feedback information is determined based on the size of the transmission time unit. This implements a compromise between transmission efficiency and feedback overheads in the communications system.

Abstract: This application discloses a control information sending method, a data block transmission method, and a related apparatus. The control information sending method in this application is used to schedule multiple transmission time intervals TTIs for data transmission, and the multiple TTIs include at least a first TTI and a second TTI.

Abstract: Embodiments provide a communication method, a network side device, and a terminal device. When a quantity of minimum scheduling time units in one time of scheduling performed by a network side device is S, and the network side device and a terminal device transmit data in a first transmission mode, a target scheduling rule can be determined by the terminal device from N scheduling rules. The scheduling rule includes at least one of a quantity T of transport blocks in one time of scheduling and a mapping relationship between T transport blocks and S minimum scheduling time units in one time of scheduling. The first transmission mode is a single-antenna transmission scheme or a multi-antenna transmission scheme. Communication can be performed, by the network side device, with the terminal device according to the target scheduling rule. In this way, proper scheduling rules can be selected to adapt to different scenarios.

Abstract: A wireless communication method is provided, including: determining a scheduled first time-frequency resource, where the first time-frequency resource is scheduled for a transmit end to send first data, and a re-allocated time-frequency resource in the first time-frequency resource is scheduled to send second data; sending, by the transmit end, the second data on the re-allocated time-frequency resource, and sending a part of the first data on a remaining first time-frequency resource other than the re-allocated time-frequency resource; and sending, by the transmit end, a remaining part of the first data that is not sent due to occupation by the second data, by using a supplementary-transmission time-frequency resource that is determined based on the re-allocated time-frequency resource and that is in a second time-frequency resource.

Abstract: In a data transmission method, a terminal device receives control information, and receives data of a transport block (TB); and the terminal devices obtains m code block (CB) groups in the TB, where m is a positive integer, m=min(NCB_re, NGroup_max), NCB_re is a quantity of CBs in the TB, NGroup_max is a maximum value of a quantity of CB groups, each of the m CB groups includes at least one CB, NCB_re is determined based on a TB size (TBS) and a maximum value of a data size of a CB, and the TBS is determined based on the control information.