Abstract: A gap determining method includes: A terminal device receives first configuration information and second configuration information from a network device. The terminal device receives scheduling information from the network device. The terminal device determines a downlink gap of the first channel based on the first configuration information. The terminal device determines a first gap between the N transport blocks based on the second configuration information. When the terminal device determines that a preset condition is satisfied, the terminal device determines that a gap part that is included in the first gap and that overlaps with the downlink gap is postponed in time domain and that a gap part obtained through postponing does not overlap with the downlink gap; or when the first gap includes a gap part that overlaps with the downlink gap, the terminal device determines that the gap part belongs to the downlink gap.

Abstract: A collision handling method and apparatus are provided. The method includes: a terminal device determines that PUR SS collides with Paging CSS; and the terminal device determines, based on a status of uplink data transmission in PUR associated with the PUR SS and/or a discontinuous reception DRX configuration status of the terminal device, to preferentially monitor the PUR SS or to preferentially monitor the Paging CSS. In the foregoing method, the terminal device determines, based on an actual situation, whether to preferentially monitor the PUR SS or preferentially monitor the paging CSS, so that when the terminal device is to preferentially monitor the PUR SS, the terminal device can receive a feedback of a network device for PUR transmission in time, and when the terminal device i to preferentially monitor the Paging CSS, it can be ensured that the terminal device can receive a paging message in time.

Abstract: This application relates to a communication method and apparatus. A terminal device sends first uplink data to a network device. After sending the first uplink data, the terminal device monitors a first downlink control channel in a first search space in a first duration; and after the first duration ends, the terminal device monitors a second downlink control channel in a second search space in a second duration. A length of a periodicity of the second search space is greater than a length of a periodicity of the first search space. In this case, the terminal device monitors the second downlink control channel based on the second search space at a low frequency. Therefore, the second search space with a long periodicity is set, so that power consumption of monitoring the downlink control channel by the terminal device can be reduced.

Abstract: This application provides a communication method, an apparatus, and a system, and the communication method, the apparatus, and the system are applicable to the IoT field, so that transmission efficiency and communication quality can be improved. The method includes: A terminal device sends first indication information to a network device, where the first indication information indicates information about a quantity of receive antennas of a first receiver of the terminal device; and the terminal device receives, through the first receiver, a wake-up signal sent by the network device.

Abstract: Example communication methods and apparatuses are described. In one example method, a network device determines a first signal, determines a length of a modulation symbol of a second signal based on the first signal, and sends the first signal and the second signal to a terminal device. The terminal device determines the length of the modulation symbol of the second signal based on the first signal, and demodulates the second signal based on the length of the modulation symbol of the second signal. A length of a modulation symbol of the first signal is one of a plurality of lengths of modulation symbols. The first signal is a preamble signal or a signal used by the terminal device for synchronization. The second signal is a data signal after the first signal.

Abstract: Example reference signal sending methods and apparatus are described. In one example method, a terminal device detects whether a paging scheduling message exists in a PDCCH search space whose starting subframe is a subframe corresponding to a paging occasion (PO), and/or detects whether a wake-up signal (WUS) exists before a PO. A network device determines a time domain resource in first duration based on a quantity of paging occasions in a discontinuous reception period, where the time domain resource is a time domain resource in a time-frequency resource used to transmit a reference signal. The network device sends the reference signal to a terminal device on the time domain resource.

Abstract: This application provides a communication method and a related apparatus. The method includes a first device obtaining first information, where the first information includes at least one of condition information for accessing a first cell and resource configuration information for accessing the first cell. The first device sends the first information to a second device, where the first information is used for the second device to determine whether access to the first cell is allowed, or the first information is used for the second device to determine a first resource for accessing the first cell, and the first resource is used for the second device to communicate with the first device. According to the method, duration of waiting for access and communication by the second device in wireless communication can be reduced, power consumption during waiting for communication is reduced, and energy efficiency is improved.

Abstract: A communication method and apparatus are provided. The method includes: A network device indicates a first terminal to send, to a second terminal, a first signal used to provide a carrier or energy for the second terminal. The first terminal may be an active terminal, and the second terminal may be a passive terminal. After receiving an indication of the network device, the first terminal sends the first signal to the second terminal. After receiving the first signal, the second terminal may use the first signal as a carrier for uplink sending, or store energy based on the first signal. Based on this solution, the network device controls the first terminal to send the first signal to the second terminal, so that the second terminal can obtain the first signal with a high power.

Abstract: A data transmission method and an apparatus are provided. The method includes: A terminal device receives downlink control information (DCI) from a network device, where the DCI is used to schedule downlink data and indicate a modulation scheme of the downlink data, the modulation scheme of the downlink data is a first modulation scheme or quadrature phase shift keying (QPSK), and a modulation order corresponding to the first modulation scheme is greater than 2; and the terminal device receives the downlink data based on the modulation scheme. Based on the foregoing procedure, the network device indicates the modulation scheme of the downlink data by using the DCI, so that the terminal device can receive the downlink data based on the modulation scheme indicated by the DCI. In this way, scheduling based on higher order modulation indicated by using the DCI can be implemented.

Abstract: This application discloses a communication method and apparatus. The method includes: A terminal device receives a first message from a network device, where the first message indicates the terminal device to enter an idle state or an inactive state; and enters the idle state or the inactive state. The terminal device monitors a wake-up signal from the network device after waiting for first duration, where an end time point of the first duration is later than a time point of entering the idle state or the inactive state. In this manner, communication efficiency of the terminal device after entering the idle state or the inactive state can be improved.

Abstract: Embodiments of this application provide a communication method and apparatus, to resolve a problem of how a network device configures, in a BWP, an NCD-SSB used for cell measurement. The method and apparatus may be used in an M2M system. The method includes: A network device determines that at least one non-cell-defining synchronization signal/physical broadcast channel block NCD-SSB in X NCD-SSBs in a first bandwidth part BWP is used for measurement, where the X NCD-SSBs have different frequency domain positions, and X is a positive integer. In addition, the network device sends first configuration information to a terminal device, where the first configuration information includes configuration parameters of the X NCD-SSBs. Further, the network device may send the X NCD-SSBs based on the configuration parameters of the X NCD-SSBs, where the X NCD-SSBs include at least one NCD-SSB used for measurement.

Abstract: This application provides a communication method and apparatus, a device, and a storage medium. The method includes: performing windowing processing on a frequency-domain signal of a first signal by using a window signal, to obtain a first frequency-domain signal, where the first signal is an OFDM signal that carries M amplitude shift keying modulation symbols, and M is a positive integer, a second frequency-domain signal is a frequency-domain signal to which the first frequency-domain signal is mapped on a first frequency-domain resource, the first frequency-domain resource is an upper half or a lower half of a frequency-domain resource occupied by the first frequency-domain signal, a second signal is a time-domain signal of the second frequency-domain signal, and the second signal is an OFDM signal that carries the M amplitude shift keying modulation symbols; and sending the second signal.

Abstract: This application provides a communication method and a communications apparatus, where the communication method includes: receiving, by a terminal device, downlink control information, where the downlink control information is used to indicate the terminal device to receive or send a first channel on a first resource; receiving, by the terminal device, first indication information, where the first indication information is used to indicate a second resource; when the first resource and the second resource overlap in time domain, receiving or sending, by the terminal device, the first channel on a third resource, where the third resource and the second resource do not overlap in time domain.

Abstract: A data transmission method and an apparatus are provided. The method includes: A terminal device receives DCI from a network device, where the DCI is used to schedule downlink data and indicate a modulation scheme of the downlink data, the modulation scheme of the downlink data is a first modulation scheme or QPSK, and a modulation order corresponding to the first modulation scheme is greater than 2; and the terminal device receives the downlink data based on the modulation scheme. Based on the foregoing procedure, the network device indicates the modulation scheme of the downlink data by using the DCI, so that the terminal device receives the downlink data based on the modulation scheme indicated by the DCI. In this way, scheduling based on higher order modulation indicated by using the DCI is implemented.

Abstract: A method and an apparatus for receiving control information of downlink data and a method and an apparatus for sending control information of downlink data are provided, to flexibly and accurately send and receive control information of downlink data, so as to improve transmission efficiency of the downlink data. A first device receives a synchronization signal from a second device, where at least one parameter of control information of downlink data is related to the synchronization signal. Then, the first device may receive the control information of the downlink data from the second device based on the at least one parameter of the control information of the downlink data. Further, the first device receives the downlink data from the second device based on the control information of the downlink data.

Abstract: A communication method and a communication apparatus are provided. The communication method includes: A first communication apparatus and a second communication apparatus determine a first identifier based on a second identifier, where a length of the first identifier is less than a length of the second identifier, and the second identifier is an identifier of the first communication apparatus. The second communication apparatus sends a first message; and correspondingly, the first communication apparatus receives the first message, where the first message includes the first identifier. The first communication apparatus wakes up. According to embodiments of this application, a quantity of bits occupied by the identifier of the first communication apparatus in the first message can be reduced, so that a capacity of the first message is increased, and the first message can be used to wake up more communication apparatuses.

Abstract: This application provides a communication method and apparatus. The method includes: A terminal device receives a wake-up signal from a network device, where the wake-up signal includes a first identifier; and when the first identifier is an identifier of the terminal device, the terminal device receives paging-related information based on a length of the first identifier or initiates random access based on a length of the first identifier. In the technical solutions provided in this application, the terminal device may receive the paging-related information or initiate random access based on the length of the identifier of the terminal device in the wake-up signal, to reduce power consumption.

Abstract: This application provides a communication method, apparatus, and device, and a storage medium. The method includes: A first device receives first downlink information from a second device, where the first downlink information includes scheduling information indicating uplink transmission of the first device, a transmission parameter and/or a transmission resource of the scheduling information are/is related to second downlink information, and the second downlink information is downlink information before the first downlink information, or the second downlink information is a synchronization signal in the first downlink information. The first device sends uplink information to the first device. This implements flexible scheduling for uplink transmission, and further improves uplink resource utilization efficiency.

Abstract: This application provides a channel coding method and apparatus, including: A terminal device generates a first bit sequence, and determines a second bit sequence based on the first bit sequence, where the second bit sequence includes M bits, any bit in the last N bits in the second bit sequence has a same value as a bit that is in the first N bits in the first bit sequence and that is in one-to-one correspondence with the bit, M and N are positive integers, and M is greater than N; performs convolutional coding on the second bit sequence based on a convolutional encoder, to obtain a third bit sequence, where an initial value of a shift register of the convolutional encoder is equal to values of the last N bits in the second bit sequence, and the convolutional encoder includes N shift registers; and sends the third bit sequence.

Abstract: Embodiments of this application provide a method for receiving and sending a reference signal, an apparatus, and a system, so that a network device can correctly demodulate uplink data of different terminal devices of a same cell. This solution is applicable to a wireless communications system including a first cell. The first cell includes a plurality of terminal devices that can transmit uplink data on a same time-frequency resource. A first terminal device in the plurality of terminal devices determines an index of a first sequence based on a first parameter value, and generates a first reference signal based on the first sequence indicated by the index of the first sequence. Then, the first terminal device sends the first reference signal to the network device. The first parameter value is different from a parameter value corresponding to another terminal device in the plurality of terminal devices.