Abstract: This application relates to a configuration method and a communication apparatus. The configuration method includes: receiving first configuration information from a network device, where the first configuration information is used to configure a plurality of first channel bandwidths; and receiving second configuration information from the network device, where the second configuration information is used to configure a plurality of first bandwidth parts BWPs, the plurality of first BWPs include at least two second BWPs with a same SCS, and the SCS of the second BWP is the same as the SCS corresponding to the second channel bandwidth. According to the configuration method of this application, a terminal device may determine a plurality of associated BWPs (namely, BWPs with a same SCS) in a channel bandwidth configured by the network device, to reduce a switching delay of the terminal device switching between two associated BWPs.

Abstract: This application provides a communication method and a communication apparatus. The method includes: sending first configuration information to a plurality of terminal devices, where the first configuration information is used to configure the plurality of terminal devices to detect paging early indication information on a first bandwidth unit, and the paging early indication information indicates to detect or not to detect paging indication information; and sending a reference signal on the first bandwidth unit, where the reference signal is used by the plurality of terminal devices to perform time synchronization and/or frequency synchronization with a network device, to reduce power consumption of a terminal device.

Abstract: A communication method and apparatus. The method includes: sending configuration information of a first initial uplink bandwidth part (BWP) to a first terminal device of a first type, and sending configuration information of a second initial uplink BWP to a second terminal device of a second type; and sending first information to at least one of the first terminal device or the second terminal device, where a first frequency domain resource indicated by the first information is in a frequency domain range of the first initial uplink BWP and is used for sending a third message (Msg3); and a second frequency domain resource indicated by the first information is in a frequency domain range of the second initial uplink BWP and used for sending a Msg3.

Abstract: This application provides a paging method, a communication apparatus, and a system. In the method, a terminal device sends first information to a first network device, where the first information includes a signal coverage level of the terminal device and whether the terminal device has a capability of receiving a first signal. The terminal device receives second information from the first network device, where the second information indicates the terminal device to receive the first signal or a second signal, the first signal is used to page or wake up the terminal device. Based on a specific application scenario, the terminal device may receive a signal with lower power consumption during demodulation from a network device, to reduce power consumption of the terminal device.

Abstract: A signal transmission method and a related device, to transmit a signal between a network device and a terminal device. The method in the embodiments includes: sending a first synchronization signal/broadcast channel block (SSB) to a first terminal device, where the first SSB includes a synchronization signal and a physical broadcast channel (PBCH), the synchronization signal and the PBCH use a frequency division multiplexing (FDM) manner in resource occupation, a quantity of orthogonal frequency division multiplexing (OFDM) symbols occupied by the synchronization signal is greater than 2, and a quantity of OFDM symbols occupied by the PBCH is greater than 3.

Abstract: The technology of this application relates to a communication method and apparatus. In an example embodiment, a terminal device obtains time information, where the time information is for determining a first time period and a second time period. The terminal device receives a first signal from a first network device in the first time period, where the first signal is for paging or waking up the terminal device, and the terminal receives second information from the first network device in the second time period, where the second signal is for paging the terminal device, or indicates to the terminal device whether to receive paging, where a signal format of the first signal and a signal format of the second signal are different, and the signal format includes at least one of: coding, modulation, and multiple access.

Abstract: This application provides a communication method and apparatus, to improve convenience of measuring a reference signal on a bandwidth part (BWP), and improve measurement efficiency. A terminal device receives configuration information, where the configuration information indicates M reference signals configured on a first bandwidth part (BWP), the first BWP includes N starting resource block (RB) locations, N is a positive integer greater than 1, and M is a positive integer greater than or equal to 1; and the N starting RB locations of the first BWP are different. The terminal device measures at least one of the M reference signals on a BWP corresponding to the N starting RB locations of the first BWP, where in a same time unit, one of the N starting RB locations is used to measure the at least one of the M reference signals.

Abstract: This application provides a communication method and apparatus, to improve communication performance of a terminal device. The method includes: determining to perform transmission in a frequency hopping transmission manner; and when transmission is performed in a repeated transmission manner, sending a third message (Msg3) or a message A (MsgA) in a random access procedure in an inter-slot frequency hopping and repeated transmission manner; and/or when transmission is performed in a non-repeated transmission manner, sending the Msg3 or the MsgA in an intra-slot frequency hopping and non-repeated transmission manner.

Abstract: This application discloses a data transmission method and an apparatus. The method includes: A network device generates downlink control information DCI. The DCI indicating a first modulation scheme or a second modulation scheme. The DCI includes a modulation and coding scheme MCS field. The DCI indicates the first modulation scheme when the MCS field is in a first state, or the DCI indicates the second modulation scheme and an MCS index of the second modulation scheme when the MCS field is in a second state. The network device sends the DCI. A terminal receives the downlink control information DCI, and receives or sends data based on the DCI. In embodiments of this application, the first modulation scheme, the second modulation scheme, and the MCS index of the second modulation scheme are indicated by using different states in the MCS field, to support a new modulation scheme without increasing DCI overheads.

Abstract: In accordance with an embodiment, a communication method includes: receiving first configuration information from a network device, wherein the first configuration information is configured to be used to configure a first uplink bandwidth part (BWP) and a second uplink BWP, the first uplink BWP does not include an active first uplink control channel resource, the second uplink BWP includes a first uplink control channel resource, and the first uplink BWP and the second uplink BWP are on a same uplink carrier; and determining the first uplink BWP and the second uplink BWP based on the first configuration information.

Abstract: Embodiments of this application provide a communication method and a communications apparatus. Therefore, when an operating bandwidth of a terminal device is a narrow bandwidth, time-frequency synchronization is performed on a resource with a relatively small bandwidth, to implement network communication. This avoids a communication failure and improves communication efficiency. In the method, a network device sends first indication information to a terminal device, where the first indication information indicates a relative location between a first resource and a second resource, the first resource carries a synchronization signal block, the synchronization signal block includes a first system message, the second resource carries a second system message, and a bandwidth of the second resource is less than a bandwidth of the first resource.

Abstract: The present disclosure relates to data transmission methods and apparatuses. One example method includes receiving first information from a network device on a first frequency domain resource, where the first information indicates to switch to a second frequency domain resource, determining a first time unit based on the first information, where the first time unit includes a second time unit, switching from the first frequency domain resource to the second frequency domain resource in the second time unit, and performing data transmission on at least one of the first frequency domain resource or the second frequency domain resource in a period of time other than the second time unit in the first time unit.

Abstract: This application discloses a data transmission method which includes: receiving DCI, wherein two TBs or one TB can be scheduled in the DCI, the DCI comprises a third bit, the third bit indicates that a quantity of the TB(s) scheduled in the DCI is 1 or 2, and the DCI further comprises a first bit and/or a second bit; and when the quantity of the TB(s) is 1, performing, based on the third bit, and the first bit or second bit, uplink or downlink data transmission, wherein the first or second bit indicates a NDI associated with the TB scheduled in the DCI; or when the quantity of the TB(s) is 2, performing, based on the third, first bit, and second bit, uplink or downlink data transmission, wherein the first and the second bit respectively indicate two NDIs associated with the two TBs.

Abstract: Embodiments relate to the internet of things communications field, and provide a data transmission method, device, and system, and a storage medium. The method includes: determining a first parameter, a second parameter, a first gap threshold, and a second gap threshold; determining, based on the first parameter and the first gap threshold, whether a gap exists in transmission on a downlink control channel; sending downlink control information through the downlink control channel based on a determining result; determining, based on the second parameter and the second gap threshold, whether a gap exists in transmission on a downlink data channel; and sending a transport block through the downlink data channel based on a determining result.

Abstract: A reference signal indication method and apparatus, a computer-readable storage medium, and a computer program are disclosed. In the method, a terminal device receives configuration information of a reference signal from a network device. The configuration information indicates at least one resource location of the reference signal. The terminal device further receives indication information of the reference signal from the network device. The indication information indicates whether the network device sends the reference signal at a first resource location. The at least one resource location includes the first resource location. According to the method, the terminal device can determine resource locations at which the network device sends the reference signal, to learn whether demodulation performance on a subsequent PO that needs to be monitored can be ensured by receiving the reference signal.

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: This application relates to the field of communications technologies, and provides a data transmission method and a communications apparatus, to reduce complexity and overheads of data reception performed by a base station. The method includes: receiving information about a repetition quantity R1 corresponding to Tmax, where Tmax is a maximum transport block size allowed to be used to transmit data; determining a cyclic parameter L based on R1, where the cyclic parameter L indicates that content carried in each of a plurality of time units to which a transport block used to transmit the data is mapped is repeated in L consecutive time units, and wherein a size of the transport block used to transmit the data is Ts, and Ts<Tmax; and transmitting the data based on the cyclic parameter L.

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 mod k+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: An information sending method includes sending, by a network device, a first message. The first message includes first information. The first information is useable to indicate to a terminal device to send second information on one or more first resources. The first message is a first broadcast message or a paging message. The information sending method further includes receiving, by the network device, the second information on the one or more first resources.

Abstract: This application provides a communication method and a related apparatus. The method includes: receiving a first signal on a first frequency domain resource and a first time unit, where the first signal is a primary synchronization signal or a secondary synchronization signal, the first signal includes at least two signals, a second signal in the at least two signals in the first signal is mapped to a second frequency domain resource, a third signal in the at least two signals is mapped to a third frequency domain resource, and the second frequency domain resource and the third frequency domain resource are located in the first frequency domain resource; and performing signal detection on the first time unit based on at least one of the at least two signals.