Abstract: Embodiments of this application provide example communication methods, devices, apparatuses, and systems. One example method includes receiving, by a terminal device and from a network device, a first identifier indicating a first communication mode of the terminal device. The first communication mode corresponds to a first physical layer function parameter used by the terminal device for communication. The first physical layer function parameter corresponding to the first communication mode is determined by the terminal device based on the first identifier and a first correspondence between a communication mode and a physical layer function parameter. Communication is performed based on the first physical layer function parameter corresponding to the first communication mode. The communication mode in the first correspondence includes the first communication mode.

Abstract: This application provides a communication method and apparatus. A terminal receives from a network device, first indication information indicating N sets of information of feedback time, each of the N sets comprises at least one piece of information of feedback time, each of the at least one piece of information of feedback time indicates a quantity of time units comprised in a feedback time of a data block. The terminal receives downlink control information (DCI) from the network device, wherein the DCI comprises second indication information indicating first information of feedback time of the data block, and the first information of feedback time belongs to a first set of information of feedback time, and the first set is one of the N sets. The terminal sends the response message for the data block to the network device based on the second indication information and the first indication information.

Abstract: Embodiments of this application provide a communication method, a terminal device, and a network device. Referring to the method, blind detection of a terminal device can be performed in different scheduling periods based on a maximum number of blind detection in a preset time period, thereby helping to reduce energy consumption that is caused to a terminal device by blind detection, and reduce blind detection complexity.

Abstract: A communication method, and related apparatuses are disclosed, to provide an MCS corresponding to a lower code rate, so as to better adapt to a requirement of a URLLC service. The communication method includes: determining N MCS indexes in an MCS table, where a value that is obtained by multiplying a code rate by 1024 and that corresponds to an MCS index X in the N MCS indexes is less than or equal to a first threshold, where X is an integer greater than or equal to 0, N is a positive integer, and N is greater than or equal to X; and sending at least one of the N MCS indexes.

Abstract: Data channel sending and receiving methods, and an apparatus are disclosed. The network device sends indication information to the terminal, where the indication information indicates that the terminal needs to detect data channel puncturing information. The network device sends the data channel puncturing information to the terminal. The network device sends a data channel to the terminal, where the data channel is punctured at a resource location.

Abstract: Embodiments of the present invention provide an uplink control information sending method, an uplink control information receiving method, an apparatus, and a system. The method includes: receiving, by a terminal device, channel indication information from an access network device on a physical control channel; determining the channel resource set that is of N channel resource sets and that matches a type or a size of the UCI as a first channel resource set; determining a channel resource that is in the first channel resource set and that is indicated by the channel indication information; and sending uplink control information UCI to the access network device on the channel resource. A quantity of bits that need to be added to the channel indication information in the embodiments of the present invention is less than that in the prior art.

Abstract: This application discloses communication methods and communication apparatuses. A terminal device receives indication information from a network device. The indication information includes one or more indication parameters. The terminal device obtains one or more pieces of configuration information based on the indication parameters. The terminal device performs uplink or downlink data transmission according to the one or more pieces of configuration information. Each pieces of configuration information includes information of a starting location and information of a quantity of time domain symbols in a slot that are occupied by uplink data or downlink data. Each piece of configuration information is selected from a first set of configuration information or a second set of configuration information.

Abstract: This application discloses communication methods and communication apparatuses. A terminal device receives indication information from a network device. The indication information includes one or more indication parameters. The terminal device obtains one or more pieces of configuration information based on the indication parameters. The terminal device performs uplink or downlink data transmission according to the one or more pieces of configuration information. Each pieces of configuration information includes information of a starting location and information of a quantity of time domain symbols in a slot that are occupied by uplink data or downlink data. Each piece of configuration information is selected from a first set of configuration information or a second set of configuration information.

Abstract: A network device sends indication information to a terminal device, to indicate a reference position of a starting symbol of a data channel. The network device sends a physical downlink control channel to the terminal device. Then the network device sends the data channel to the terminal device, or the network device receives the data channel from the terminal device.

Abstract: Methods and apparatuses are disclosed for semi-persistent scheduling and configured grant transmission configurations. An example method, which is performed by a communication device, includes the steps of: transmitting, to a user equipment (UE), a radio resource control (RRC) signal or activation downlink control information (DCI) signal for semi-persistent scheduling (SPS) or configured grant (CG) transmission configuration; and transmitting, to the UE, a physical layer control signal comprising an indication of one or more parameters for SPS or CG transmission.

Abstract: This application provides an information transmission method and apparatus. The solution includes: determining, by a terminal device, at least two transport blocks; and decoding, by the terminal device, first information transmitted by using the at least two transport blocks, where the first information includes at least one of control information and data. This solution is applicable to a scenario in which same information or information with a same information source is transmitted by using a plurality of transport blocks.

Abstract: Embodiments of this application provide a communication method, a terminal device, and a network device. Referring to the method, blind detection of a terminal device can be performed in different scheduling periods based on a maximum number of blind detection in a preset time period, thereby helping to reduce energy consumption that is caused to a terminal device by blind detection, and reduce blind detection complexity.

Abstract: In the field of wireless communication technologies, method and apparatus for determining a transport block size (TBS) of a data channel are provided. In a communication network, a terminal device receives control information from a network device. The control information includes modulation indication information and resource information of the data channel. The terminal device determines a modulation order and a code rate according to the modulation indication information, and determines number of time-frequency resources according to the resource indication information of the data channel. The terminal device determines the TBS according to the modulation order, the code rate, and the number of time-frequency resources. Based on the determined TBS, the terminal device decodes the data channel carried on the time-frequency resources or sends the data channel on the time-frequency resources.

Abstract: Embodiments of the present invention provide an uplink control information sending method, an uplink control information receiving method, an apparatus, and a system. The method includes: receiving, by a terminal device, channel indication information from an access network device on a physical control channel; determining the channel resource set that is of N channel resource sets and that matches a type or a size of the UCI as a first channel resource set; determining a channel resource that is in the first channel resource set and that is indicated by the channel indication information; and sending uplink control information UCI to the access network device on the channel resource. A quantity of bits that need to be added to the channel indication information in the embodiments of the present invention is less than that in the prior art.

Abstract: This application provides an uplink information transmission method and apparatus. The method includes: determining a value of a power control parameter in a value set of the power control parameter, where any value set of the power control parameter includes at least two values; sending indication information to a terminal device, where the indication information is used to indicate the value of the power control parameter; and receiving uplink information, where the uplink information is from the terminal device at a transmit power adjusted based on the value of the power control parameter.

Abstract: Different carriers and/or bandwidth parts (BWPs) may sometimes be utilized for wireless communication between two devices. In some prior wireless communication systems, e.g. in new radio (NR), the carrier used to transmit hybrid automatic repeat request (HARQ) feedback is semi-statically configured. However, semi-static configuration might be disadvantageous, e.g. for scenarios in which latency is a concern. In some embodiments, the carrier and/or BWP for transmitting HARQ feedback is instead dynamically indicated. More generally, when two devices are wirelessly communicating with each other, the carrier and/or BWP to be used for transmitting control information may be dynamically indicated.

Abstract: A reference sequence may be transmitted in wireless communication, e.g. in order to perform channel estimation. The use of a reference sequence introduces overhead. In some embodiments, the subcarrier spacing (SCS) of the multi-carrier symbols (e.g. OFDM symbols) used to transmit one or more reference sequences is different from the SCS of the multi-carrier symbols used to transmit information (e.g. data). In some embodiments, an original reference sequence may be spread over multiple multi-carrier symbols, with each multi-carrier symbol carrying a respective reference sequence that is a portion of the original reference sequence. The technical benefit is possibly improved channel estimation because the original reference sequence is spread in time, but with the same overhead (in terms of total occupied time of reference symbols) as transmitting all of the original reference sequence at the same time.

Abstract: This application relates to the field of communications technologies, and provides an information sending method, an information receiving method, and an apparatus. The method includes: determining, by a terminal device, at least two transport blocks; and sending, by the terminal device, first information to a network device by using the at least two transport blocks, where the first information includes at least one of data and control information, and the at least two transport blocks carry the first information.

Abstract: This application discloses a method for sending a physical uplink shared channel and an apparatus and relates to the communication field, to resolve a problem of how to transmit uplink data to different TRPs by using different precoding matrices. A network device sends indication information to a terminal device, where the indication information is used to indicate first information and second information. The first information is used to indicate first precoding information corresponding to a first nominal PUSCH repetition. The second information is used to indicate second precoding information corresponding to a second nominal PUSCH repetition. The terminal device sends N PUSCHs based on precoding information indicated by the indication information. The precoding information corresponding to the N PUSCHs includes at least one of the first precoding information and the second precoding information.

Abstract: This application provides a data transmission method and apparatus. A terminal device sends first data to a network device in the nth time unit, where n is an integer greater than or equal to 0. The terminal device send second data to the network device when the terminal device does not receive the response message corresponding to the first data before the (n+k)th time unit, wherein the second data is new data which is different from the first data, where k is a positive integer. According to the data transmission method provided in some embodiments of this application, the terminal device may flexibly determine the transmission mode of the second data based on an actual situation, so as to reduce a transmission delay of uplink data and improve transmission reliability of the uplink data.