Abstract: A signal sending method, a signal receiving method, and a communication apparatus. A first device sends a first signal to a second device on a first frequency domain unit, and sends a second signal on a second frequency domain unit. The first frequency domain unit includes a first frequency, and the second frequency unit includes a second frequency. An absolute value of a difference between the first frequency and the second frequency is related to one or more of the following: a first bandwidth, a second bandwidth, or a third bandwidth. The first bandwidth is a bandwidth occupied by the first frequency domain unit in frequency domain. The second bandwidth is a bandwidth occupied by the second frequency domain unit in frequency domain. The third bandwidth is a bandwidth occupied by a third frequency domain unit in frequency domain.

Abstract: This application provides example communication methods and apparatuses. One example method includes performing, by a network device on a preconfigured resource, data demodulation on uplink data from a terminal device. The network device can then send downlink control information (DCI) to the terminal device, where the DCI includes first indication information, and if the uplink data fails to be demodulated, or it is determined, based on a result of the data demodulation, that the terminal device needs to retransmit the uplink data, the first indication information indicates either the terminal device to initiate random access or EDT and retransmit the uplink data or that the uplink data fails to be demodulated.

Abstract: A data transmission method and apparatus are provided. The method includes: sending, by a terminal device, a message 1 including a random access preamble to a first network device; receiving DCI and a message 2 including downlink data scheduled by the DCI from the first network device, wherein the DCI and/or the message 2 include/includes first information, which is used to schedule ACK/NACK feedback information of the message 2; and sending the ACK/NACK feedback information to the first network device based on the first information. According to the application, the first information is used to schedule the ACK/NACK feedback information, therefore the terminal device may send the ACK/NACK feedback information of the message 2 to the first network device in an MT-EDT scenario based on the first information, thereby improving robustness of transmission of the downlink data in the message 2.

Abstract: This disclosure provides a communication method, apparatus, and a storage medium. The method includes: a first device determines a first frequency unit, and communicates with a second device on the first frequency unit. A granularity of a first channel raster corresponding to the first frequency unit is less than a granularity of a second channel raster corresponding to a second frequency unit. The second frequency unit is used for communication between the first device and a third device. The first frequency unit and the second frequency unit are located in a same operating band.

Abstract: Methods and apparatuses for sending and receiving a wake-up signal sequence are disclosed. The method includes: determining N parameters/parameter for one paging occasion (PO), where the N parameters/parameter correspond(s) to N wake-up signal (WUS) resources/resource in WUS resources associated with the PO, N is an integer greater than or equal to 1, and when N>1, the N parameters are different from each other; generating N WUS sequence sets/set based on the N parameters/parameter, where the N WUS sequence sets/set are separately transmitted on associated resources in the N WUS resources, and each of the N WUS sequence sets includes at least one WUS sequence; and sending at least one sequence in a first WUS sequence set on a first WUS resource, where the first WUS resource is one of the N WUS resources, and the first WUS sequence set is a WUS sequence set transmitted on the first WUS resource.

Abstract: Embodiments of this application provide a solution for network and terminal devices that have inconsistent understandings of retransmission scheduled by using downlink control information (DCI). The solution includes: A network device sends first DCI to a terminal device, and the terminal device receives the first DCI from the network device, where the first DCI includes a first field and a second field, the first field indicates that a retransmitted transport block (TB) exists in a TB scheduled by using the first DCI, and the second field indicates an index of a retransmitted first TB in the TB scheduled by using the first DCI; and the terminal device receives the retransmitted first TB from the network device based on the first field and the second field; or the terminal device sends the retransmitted first TB to the network device based on the first field and the second field.

Abstract: This application provides a communication method, an apparatus, a device, and a storage medium. The method includes: A first device generates a first orthogonal frequency division multiplexing (OFDM) time domain signal, which occupies one subcarrier in frequency domain and is used by a second device to perform backscatter communication. The first device sends the first OFDM time domain signal to the second device. The first OFDM time domain signal occupies one subcarrier in frequency domain, such that power is concentrated on the subcarrier. When the second device performs backscatter communication based on the first OFDM time domain signal, reliability of backscatter data is improved.

Abstract: A message transmission method and device relating to the field of communications technologies are described that improve an anti-interference capability in message transmission. The method includes generating a scrambling code according to a scrambling code initialization seed, wherein the scrambling code initialization seed meets the following expression: cinit=R·2a7+P·(nf modk+1)·2b7 and then scrambling a message according to the scrambling code. The method further includes sending the scrambled message to a terminal on a physical downlink shared channel. Because the first time parameter has different values at at least two different moments, scrambling codes determined at the at least two corresponding different moments are different. Therefore, a possibility at which the base station uses a same scrambling code to scramble a same system message repeatedly in a time period is reduced, so that an anti-interference capability in system message transmission is improved.

Abstract: A data transmission method and a communication apparatus. A first device may determine a second sequence, where the second sequence is obtained based on a base sequence and a first mask, and the first mask corresponds to a first encoding scheme. The first device sends the second sequence and a first sequence, where the first sequence includes a first encoded bit sequence obtained by encoding an information bit sequence based on the first encoding scheme, the first encoded bit sequence includes N bits, and N is a positive integer. The second device receives the second sequence and the first sequence from the first device and processes the received first encoded bit sequence by using a decoding scheme corresponding to the first encoding scheme. This manner is applicable to long-distance data transmission and may reduce missed detection and false detection of the first encoded bit sequence.

Abstract: An information transmission method and a communication apparatus are disclosed. The method includes: A terminal device receives a first signal sent by a first network device based on a bandwidth of the first signal, where the first signal includes N first symbols, a modulation scheme of each of the N first symbols is ASK or OOK modulation, N is a positive integer, and the first signal is an orthogonal frequency division multiplexing (OFDM) signal; the terminal device determines a duration of the first symbol, where the duration of the first symbol is one of duration of at least one first symbol that is associated with the bandwidth of the first signal; and the terminal device determines, based on the duration of the first symbol, an information bit carried in the N first symbols.

Abstract: A communication method and apparatus are provided. The method includes: A network device determines an OFDM signal, where the OFDM signal carries a first amplitude shift keying symbol, and the first amplitude shift keying symbol is an amplitude shift keying symbol ON; and generates a first signal based on the OFDM signal and N bits, where the first signal carries N second amplitude shift keying symbols in time domain, and N is a positive integer greater than or equal to 2. The network device sends the first signal. According to the foregoing method, information transmission efficiency of an amplitude shift keying modulation scheme can be improved.

Abstract: A multicast broadcast service sending method includes receiving indication information from a core network device. The indication information indicates that a receiver of a target multicast broadcast service includes a narrowband terminal and a broadband terminal. The method also includes sending a multicast control channel (MCCH) to the narrowband terminal and the broadband terminal. The MCCH is used to carry configuration information of a multicast traffic channel (MTCH) of the target multicast broadcast service, and a first frequency domain resource corresponding to the MCCH or a scheduling bandwidth occupied by the MCCH does not exceed a maximum bandwidth capability of the narrowband terminal. The method further includes sending the target multicast broadcast service to the narrowband terminal and the broadband terminal on a frequency domain resource corresponding to the MTCH.

Abstract: A message transmission method and device relating to the field of communications technologies are described that improve an anti-interference capability in message transmission. The method includes generating a scrambling code according to a scrambling code initialization seed, wherein the scrambling code initialization seed meets the following expression: cinit=R·2?7+P·(nfmodk+1)·2b7 and then scrambling a message according to the scrambling code. The method further includes sending the scrambled message to a terminal on a physical downlink shared channel. Because the first time parameter has different values at at least two different moments, scrambling codes determined at the at least two corresponding different moments are different. Therefore, a possibility at which the base station uses a same scrambling code to scramble a same system message repeatedly in a time period is reduced, so that an anti-interference capability in system message transmission is improved.

Abstract: A monitoring method and an apparatus are provided. The method includes transmitting, by a terminal device, first information based on a first repetition number, where the first repetition number is less than or equal to a second repetition number, and the second repetition number is a maximum repeat transmission number of the first information. The method also includes determining, by the terminal device, a scheduling end moment of the first information based on the second repetition number, where the scheduling end moment of the first information is a transmission end moment of the first information when the first information is transmitted based on the second repetition number. The method further includes starting or restarting, by the terminal device, a timer at the scheduling end moment of the first information, and monitoring a PDCCH search space before the timer expires or stops.

Abstract: A communication method and apparatus. The communication method includes: a transmitting end device generates an orthogonal frequency division multiplexing (OFDM) time domain signal, where the OFDM time domain signal includes a plurality of amplitude shift keying modulation symbols arranged in time domain; and the transmitting end device sends the OFDM time domain signal to a receiving end device. According to the communication method, an OFDM time domain signal generated by a transmitting end includes a plurality of amplitude shift keying modulation symbols, so that a data transmission rate can be improved.

Abstract: This application provides a communication method, apparatus, and device, and a storage medium. The method includes: A first device determines a time domain resource starting from a start location of communication, where the time domain resource includes a first time domain resource and a second time domain resource, there is at an interval of a first interval duration between the first time domain resource and the second time domain resource, a time domain length of the first time domain resource is related to a first transmission duration, and a time domain length of the second time domain resource is a second transmission duration; and the first device communicates with a second device on the time domain resource. In this way, the first device and the second device communicate with each other in communication systems (such as an NR communication system).

Abstract: Embodiments of this application provide a communication method. The method includes: the terminal device receives a first paging indication from a network device and determines based on a first paging indication and a target bit, whether to monitor a paging message; wherein a total quantity of subgroups comprised in all paging occasions (POs) associated with the first paging indication is determined based on a quantity of all the POs associated with the first paging indication and a quantity of subgroups comprised in each of all the POs associated with the first paging indication.

Abstract: A signal sending method and an apparatus. The method includes: a first device sends a first signal to a second device on N orthogonal frequency division multiplexing (OFDM) symbols, where the N OFDM symbols include N1 first symbols, N is an integer greater than or equal to 1, and N1<N. The first device sends a second signal to a third device on at least one of the N1 first symbols. According to the signal sending method and the apparatus, a technology similar to radio frequency identification (RFID) and wake-up radio (WUR) can be introduced to a communication system, and network resource overheads can be reduced.

Abstract: A communication method and system, and a related apparatus. The communication method is applied to the communication system including a first device and a second device. In the communication method, the first device may indicate the second device to reserve a channel resource, and the second device does not perform data transmission on the reserved channel resource. This prevents the second device from occupying channel resources for long time, to release channel resources for a cellular communication system. The first device may schedule a terminal device other than the second device by using the released channel resources. This improves data transmission efficiency.

Abstract: A channel quality measurement method and apparatus are described. The method can include a network device sending configuration information to a terminal device. The configuration information configures a downlink carrier set. The terminal device determines a first downlink carrier from the downlink carrier set. The terminal device sends a random access process message 3 (Msg3) to the network device. The random access process message 3 includes first information. The first information includes information indicating channel quality of the first downlink carrier. The channel quality provides information about a first repetition level to the network device. The first repetition level is a minimum repetition level required when transmission performed on a downlink channel based on a preset transmission parameter meets a preset block error rate.