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, and relates to the field of wireless communications. The method includes: determining, by a terminal device, whether to monitor an uplink preemption indication (PI) based on whether a time-frequency resource used to transmit uplink data overlaps a reference uplink resource (RUR), to effectively avoid blind detection performed on the uplink PI by terminal devices that do not need to receive the uplink PI, and reduce overheads of blind detection performed on the uplink PI by the terminal devices.

Abstract: Embodiments of this application disclose a data transmission method and apparatus, and relate to the field of wireless communications technologies. According to the embodiments of this application, a first terminal sends first information to a second terminal, where the first information is used to instruct the second terminal to stop using a first resource to send uplink data; and the first terminal uses the first resource to send uplink data.

Abstract: This application relates to the field of communications technologies, and in particular, to uplink data sending and receiving methods, an apparatus, and a system. A sending method includes: receiving, by a terminal device, control information sent by a network device, where the control information is used to indicate the terminal device to send first data on a first resource: and when the first resource and a second resource to be used by the terminal device to send second data overlap in a first time domain range in time domain, stopping sending, by the terminal device on the first resource, the first data in the first time domain range, where a frequency domain range corresponding to the first resource belongs to a first carrier, and a frequency domain range corresponding to the second resource belongs to a second carrier.

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: This application provides a control information transmission method, and relates to the field of wireless communications. The method includes: determining, by a terminal device, whether to monitor an uplink preemption indication (PI) based on whether a time-frequency resource used to transmit uplink data overlaps a reference uplink resource (RUR), to effectively avoid blind detection performed on the uplink PI by terminal devices that do not need to receive the uplink PI, and reduce overheads of blind detection performed on the uplink PI by the terminal devices.

Abstract: A method includes: a terminal device may determine, based on a type of downlink control information DCI, whether data scheduled by using the DCI exists on a preempted time-frequency resource, to determine whether the data transmitted on the preempted time-frequency resource needs to participate in data decoding.

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: 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: Embodiments of this application disclose a data transmission method and apparatus, and relate to the field of wireless communications technologies. According to the embodiments of this application, a first terminal sends first information to a second terminal, where the first information is used to instruct the second terminal to stop using a first resource to send uplink data; and the first terminal uses the first resource to send uplink data.

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 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: A data transmission method and a data transmission apparatus are disclosed. In an embodiment an apparatus includes a processor and a non-transitory memory storing programming for execution by the processor, the programming including instructions for receiving data from a second device, wherein the data is carried on time-frequency resources, receiving indication information from the second device, dividing the time-frequency resources into a first time-frequency resource and/or a second time-frequency resource according to the indication information and determining a manner of sending feedback information of data carried on the first time-frequency resource and/or a manner of sending feedback information of data carried on the second time-frequency resource to the second device.

Abstract: An information transmission method and a related apparatus are provided. The method includes: transmitting, by a first device, a TB to a second device; and transmitting, to the second device before a feedback time corresponding to the TB, original data of a first CB included in the TB, where the first CB is a CB that meets a condition necessary for system bits being occupied. In this case, a waiting time for the first device to transmit the first CB is effectively shortened, and feedback overheads are reduced. Alternatively, the first device may directly transmit first indication information to the second device, and in this case, according to the first indication information, the second device may not directly transmit feedback information of the first CB, thereby effectively reducing feedback overheads.