Abstract: This application provides a data transmission method, a terminal device, and a network device. The method includes: receiving, by a terminal device, first control information sent by a network device, where the first control information is used to instruct the terminal device to receive, on a first time-frequency resource, a first transport block sent by the network device at an nth time; receiving, by the terminal device, the first transport block on the first time-frequency resource; and receiving, by the terminal device, first indication information sent by the network device, where the first indication information is used to indicate a first code block group CBG in the first transport block, and the first CBG corresponds to a second time-frequency resource during nth transmission of the first transport block, where n is an integer greater than or equal to 0.

Abstract: A network device sends configuration information to a terminal device, where the configuration information includes a scale factor corresponding to each aggregation level in a first aggregation level set; the network device sends DCI in a first DCI format to the terminal device, where an aggregation level corresponding to the DCI in the first DCI format is an aggregation level in the first aggregation level set. The terminal device receives the configuration information, determines, based on the scale factor corresponding to each aggregation level in the first aggregation level set, a quantity of candidate PDCCHs corresponding to each aggregation level in the first aggregation level set; the terminal device receives the DCI in the first DCI format based on the quantity of candidate PDCCHs corresponding to each aggregation level in the first aggregation level set.

Abstract: A signal receiving method, an apparatus and a communication system. The network device determines a subcarrier location of a to-be-sent first signal and a subcarrier location of a to-be-sent second signal, where subcarriers occupied by the first signal are continuous subcarriers in a first group of resource elements, subcarriers occupied by the second signal are continuous subcarriers in a second group of resource elements, a quantity of the subcarriers occupied by the first signal is the same as a quantity of the subcarriers occupied by the second signal, and a subcarrier spacing in the first group of resource elements is different from a subcarrier spacing in the second group of resource elements, the first signal and the second signal are primary synchronization signals. The network device sends the first signal to the terminal device and sends the second signal to the terminal device or other terminal device.

Abstract: In a control information sending method, a network device sends first physical layer control information to a first terminal device, where the first physical layer control information indicates a first index to the first terminal device, and instructs the first terminal device to monitor second physical layer control information within a first time period. The network device sends the second physical layer control information to at least one terminal device within the first time period, where the second physical layer control information includes at least one control information field, the at least one control information field includes a first control information field, and the first control information field instructs the first terminal device to receive or send data, or the first control information field instructs the first terminal device to receive or send data or not to receive or send data.

Abstract: The power requirements of user equipments (UEs) are expected to increase as their capabilities increase. Some power saving methods have previously been proposed, but are limited by the radio resource control (RRC) protocol and do not address the power consumption associated with having to transition between different RRC states. In some embodiments described herein, there are not different RRC states, but instead a single RRC state. Within that single RRC state, there are different modes of operation, e.g. a default low power operation mode and an enhanced power operation mode. In some embodiments, the UE switches from the default operation mode to the enhanced operation mode on an on-demand basis (e.g. based on the communication capability required by the UE), and then returns back to the default operation mode.

Abstract: This application discloses a channel quality feedback method and apparatus, and the channel quality feedback method includes the following steps: determining, by a network device, a channel quality indicator set of a terminal device, where the channel quality indicator set includes at least one channel quality indicator value, and the channel quality indicator value is used to indicate channel quality; and sending, by the network device, the channel quality indicator set to the terminal device.

Abstract: This application provides a downlink channel transmission method and apparatus, so that reliability of downlink channel transmission can be improved. The method includes: A terminal device receives at least two physical downlink control channels PDCCHs on at least two control information resources, where the at least two PDCCHs carry same downlink control information DCI, and the DCI is used to indicate a time-frequency resource corresponding to a first downlink channel. The terminal device obtains at least two transmission configuration indicators TCIs corresponding to the at least two control information resources. The terminal device determines a target TCI in the at least two TCIs, where the target TCI is a TCI corresponding to the first downlink channel. The terminal device receives the first downlink channel based on the DCI and the target TCI.

Abstract: A method includes: obtaining, by a first network device, channel state information; generating, by the first network device, channel state indication information, where the channel state indication information includes an absolute value of the channel state information or an offset value of the channel state information relative to reference channel state information; and sending, by the first network device, the channel state indication information to a second network device.

Abstract: An uplink communication method is disclosed, so that a network device can control an uplink communication latency, reliability, and uplink transmit power in an uplink grant free communication scenario. The method includes: obtaining, by a terminal device, a first control channel, where the first control channel carries a control information group, the control information group includes a plurality of pieces of control information, and the plurality of pieces of control information correspond to a plurality of uplink channels; obtaining, by the terminal device, first control information from the first control channel, where the first control information is control information corresponding to a first uplink channel in the plurality of uplink channels; and performing, by the terminal device, uplink communication with a network device based on the first control information.

Abstract: Embodiments of the present disclosure provide a data transmission method. The method includes: sending, by a network device, first indication information, where the first indication information includes N bits, the N bits are corresponding to M time units, the M time units are corresponding to at least one time length, a value of each bit is used to indicate whether a corresponding time unit is used to transmit data of a terminal device, M is an integer greater than or equal to 1, and N is an integer greater than or equal to 1; and sending, by the network device, downlink data in a time unit that is used to transmit the data of the terminal device, where the time unit is indicated by the N bits. Therefore, a unified time domain resource indication manner can be used in different scenarios to reduce complexity of a signaling design.

Abstract: In a data receiving method, a terminal receives first indication information, where the first indication information indicates a target frequency domain position. The terminal determines a first time-frequency resource based on a time domain position of a control resource set and the target frequency domain position, where a frequency domain position of the first time-frequency resource is the same as the target frequency domain position. The terminal receives data on a target time-frequency resource, where the target time-frequency resource includes a second time-frequency resource and a part of resources in the first time-frequency resource; or the target time-frequency resource includes a second time-frequency resource but does not include the first time-frequency resource, where N is a positive integer.

Abstract: This application provides a data transmission method and apparatus. The method includes coding, by a terminal device, a first transport block to obtain a first coded transport block, where the first transport block includes first data; coding, by the terminal device, indication information to obtain coded indication information, where the indication information is used to indicate whether the terminal device sends a first buffer status report BSR when the terminal device sends the first data, and the first BSR indicates a data amount of to-be-transmitted data currently buffered in a buffer of the terminal device; and sending, by the terminal device, the first coded transport block and the coded indication information to a network device. According to the data transmission method and apparatus provided in embodiments of this application, the network device can directly learn whether the terminal device sends a BSR, so as to reduce a communication delay.

Abstract: By defining more SCS options and Discrete Fourier Transform (“DFT”) options for transmissions in future networks, there arises cause to select from among the options, with aspects of the channel as guidance for the selection. In addition, new CP designs may be defined for use with the new SCS options and the new DFT options along with methods of selecting a CP design appropriate to a particular situation. The new CP designs may be shown to have smaller CP overhead when compared to the known CP designs used for known combinations of an SCS option with an FFT size option. New sampling frequency design options and new system basic timing options may also be defined, along with methods of making appropriate selections from among these options. Control signaling using higher layers may be used to distribute configuration options that include multiple SCS options, CP duration options, sampling frequency options and DFT size options per sub-band.

Abstract: A method may include: dividing, by a sending device into k code blocks CBs, a TB into which a cyclic redundancy check bit is loaded; then separately performing channel coding on the k CBs, to obtain a bit sequence Sj, where j=1, 2, . . . , and k, and a set S={S1, S2, . . . , Sk}; and mapping, by the sending device, some or all bit sequences in all elements in S to transmission resources in N basic transmission time units, where some or all bit sequences in the Sj are mapped to transmission resources in Mj basic transmission time units, and a last bit in the Sj mapped to an mth basic transmission time unit in the Mj basic transmission time units and a first bit in the Sj mapped to an (m+1)th basic transmission time unit are contiguous in the Sj.

Abstract: This application provides a feedback information sending method, including: receiving, by a terminal device, in a first time unit, a first reference signal sent by a network device, where the first reference signal corresponds to first downlink control information, and the first downlink control information is used to schedule a first information block; determining, by the terminal device based on the first reference signal, that receiving of the first downlink control information in the first time unit fails; and sending, by the terminal device, on a first resource corresponding to the first time unit, first feedback information to the network device, where the first feedback information indicates that the receiving of the first downlink control information fails.

Abstract: Embodiments of the present invention provide a method for transmitting uplink control information and an apparatus, applicable to a multi-carrier system. A user terminal receives physical layer signaling from a network device, where the physical layer signaling includes first indication information. The user terminal determines, according to the first indication information, a bit quantity of periodic CSI that can be sent on a channel resource or a piece quantity of periodic CSI that can be sent on a channel resource. The user terminal determines, according to the bit quantity or the piece quantity of the periodic CSI that can be sent, to-be-sent periodic CSI from periodic CSI corresponding to multiple downlink carriers. The user terminal sends HARQ-ACK information and the to-be-sent periodic CSI on the channel resource.

Abstract: A data transmission method, including receiving, by a terminal device in a downlink control part, first downlink control information and a first downlink reference signal that are sent by a network device, receiving, by the terminal device in a first downlink data part according to the first downlink control information, first data sent by the network device, generating, by the terminal device, feedback information based on the first downlink reference signal and the first data, sending, by the terminal device, the feedback information to the network device in an uplink feedback part, and receiving, by the terminal device in a second downlink data part according to the first downlink control information, second data sent by the network device, where the downlink control part, the first downlink data part, the uplink feedback part, and the second downlink data part constitute a first time unit.

Abstract: A downlink control information (DCI) sending method and an apparatus are provided. A base station determines a first channel resource, where the first channel resource is located in the ith time unit of a subframe in a time domain, the subframe includes NT time units, NT is an integer greater than or equal to 2, and i is a positive integer less than or equal to NT; and the base station sends DCI to a terminal device on the first channel resource. In this solution, the first channel resource that carries the DCI is located in the ith time unit of the subframe in the time domain, where i is a positive integer less than or equal to NT. That is, there is a first channel resource in each time unit of the subframe.

Abstract: This application discloses communications apparatuses, to resolve a problem that joint coding and transmission cannot be performed in a scenario in which PUCCH resources of SRs are not aligned with a PUCCH resource of a HARQ/CSI in time domain. The apparatus is enable to execute comprises: receiving a second UCI on a second PUCCH without receiving a first UCI on the first PUCCH, the first UCI comprising HARQ information, and the second UCI comprising a SR; wherein a time domain position of the second PUCCH overlaps a time domain position of the first PUCCH, a priority of the second UCI is higher than a priority of the first UCI, the priority of the second UCI is a priority of a resource configuration corresponding to the second UCI, and the priority of the second UCI is greater than or equal to a first threshold.

Abstract: The present disclosure describes methods, user equipment, and base stations for sending feedback information. One example method includes: sending scheduling information on a downlink control channel to user equipment, wherein the downlink control channel is in a downlink subframe which belongs to a preconfigured downlink subframe set, and the scheduling information is used for scheduling downlink data; determining an uplink subframe for receiving feedback information corresponding to the downlink data, wherein the preconfigured downlink subframe set is a set of downlink subframes that are associated with the uplink subframe and that are of all carriers configured for the user equipment by the base station; sending PUCCH resource indication information to the user equipment for indicating a PUCCH resource.