Abstract: The present disclosure relates to information transmission methods and communications devices. In one example method, a first communications device receives control information sent by a second communications device, where the control information is used to schedule a plurality of transport blocks (TBs). The first communications device determines a first value, where the first value is associated with one or more of a frequency hopping configuration parameter, a redundancy version (RV) change parameter, an interleaving gap parameter, and a quantity of transport blocks. The first communications device determines a first start time unit during transmission of a first TB, where the first TB is at least one of the plurality of TBs scheduled by the control information, and an index of the first start time unit is an integer multiple of the first value. The first communications device transmits the first TB based on the determined first start time unit.

Abstract: A communication method includes determining, by a network device, a first signal. The first signal includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a first physical broadcast channel PBCH. A frequency domain bandwidth occupied by the PSS, the SSS, and the first PBCH is less than 240 subcarriers. The PSS, the SSS, and the first PBCH are mapped to different time-domain symbols. The method also includes sending, by the network device, the first signal.

Abstract: A communication method includes: a first device determines first control information, where the first control information carries first information, and the first information is used to indicate emergency information; and the first control information is format-3 control information, format-3A control information, format-6-0A control information, format-6-0B control information, format-6-1A control information, or format-6-1B control information; the first device sends the first control information to a second device; and the first device sends the emergency information to the second device. The method expands coverage of a network, and may be applied to an internet of things (IoT), for example, machine type communication (MTC), a long term evolution-machine (LTE-M), or machine-to-machine (M2M).

Abstract: Example transmission methods and apparatus are described. One example method includes receiving control information by a first communications device, where the control information schedules a plurality of transport blocks (TBs), and the control information includes redundancy version (RV) indication information. The first communications device determines a first parameter through pre-specifying, determines the first parameter by receiving physical layer signaling sent by the second communications device, or determines the first parameter by receiving higher layer signaling sent by the second communications device, where the first parameter is a parameter related to a first RV corresponding to a first TB. The first communications device determines the first RV based on the first parameter, and determines, for the first TB based on the first RV and a predetermined RV updating sequence, an RV used in a time unit other than the k time units in the time resource used for transmission of the first TB.

Abstract: This application relates to the field of communications technologies, and discloses a communication method and a communications apparatus. A terminal device receives first indication information from a network device, where the first indication information indicates an available frequency domain resource, in a bandwidth, which can be used by the terminal device to communicate with the network device. The bandwidth is one carrier bandwidth or one carrier bandwidth part. The available frequency domain resource includes a plurality of non-contiguous frequency domain resource groups, and each frequency domain resource group includes one or more contiguous frequency domain resource blocks. The terminal device determines the available frequency domain resource in the bandwidth based on the first indication information.

Abstract: Embodiments of this application disclose a communications method and apparatus. The method may include: determining, by a terminal device, a first signal to be sent on a first uplink carrier in a first time period, and determining a second signal to be sent on a second uplink carrier in a second time period, where when a first reference signal configuration manner is used for the second signal, a priority of the second signal is higher than a priority of the first signal, and the terminal device determines that a first symbol in the first signal is to be discarded; and the terminal device sends another symbol in the first signal other than the first symbol and the second signal to a network device, where the first time period and the second time period are adjacent in terms of time, and the second signal is a PUSCH.

Abstract: This application relates to a communication method and a communications device. The communication method includes: determining, a first signal to be sent on a first uplink carrier; determining a second signal to be sent on a second uplink carrier, where the first uplink carrier corresponds to a first radio access technology, and the second uplink carrier corresponds to a second radio access technology; and when a first transmission timing corresponding to the first signal is different from a second transmission timing corresponding to the second signal, and if the first signal and the second signal overlap in time domain, sending, a third signal, where the third signal is the second signal, or is the second signal or a part of the first signal, where the part of the first signal is carried on a symbol that does not overlap with a symbol corresponding the second signal.

Abstract: Embodiments of this application disclose a data transmission method, a control information sending method, and a device, and relate to the field of communications technologies. The method may include: determining, by the communications device, a first resource used for receiving or sending data; receiving control information, where the control information includes first indication information that can be used to indicate that a resource is punctured or postponed, and where the first indication information is used to indicate that a second resource is punctured or postponed; and determining, by the communications device, a third resource based on the first indication information and the first resource, and receiving or sending the data by using the third resource.

Abstract: This application relates to the field of communications technologies, and discloses a communication method and a communications apparatus. A terminal device receives first indication information from a network device, where the first indication information indicates an available frequency domain resource, in a bandwidth, which can be used by the terminal device to communicate with the network device. The bandwidth is one carrier bandwidth or one carrier bandwidth part. The available frequency domain resource includes a plurality of non-contiguous frequency domain resource groups, and each frequency domain resource group includes one or more contiguous frequency domain resource blocks. The terminal device determines the available frequency domain resource in the bandwidth based on the first indication information.

Abstract: An uplink signal transmission method includes: sending, by a terminal device, an uplink signal to a network device in response to determining that a first variation meets a timing advance (TA) update condition, where the first variation indicates a quality change value of a downlink signal received by the terminal device; receiving, by the terminal device, first information from the network device; and in response to determining that the first information includes TA information, adjusting, by the terminal device, an uplink transmission time based on the TA information.

Abstract: This application provides a reference signal sending method, a reference signal receiving method, an apparatus, and a device, to provide a reference signal sending or receiving mechanism. A first network device determines at least one frequency reference point. The first network device generates a reference signal based on the at least one frequency reference point, and sends the reference signal in the first frequency band. A frequency reference point is determined based on a frequency band. In this case, both the first network device that sends the reference signal and a second network device that receives the reference signal may determine the frequency reference point based on the frequency band, and the two network devices may determine a same reference signal at a same frequency domain location, so that the reference signal sent by the first network device can be correctly detected by the second network device.

Abstract: Example resource allocation methods and apparatus are described. One example method includes that a terminal device receives downlink control information sent by a network device, where the downlink control information includes a resource allocation field, the resource allocation field includes formula (I)+5 bits. The terminal device determines the first resource indication value, and determines, based on the first resource indication value, a starting resource block allocated in the uplink bandwidth and a length L CRP, s of consecutive resource blocks allocated in the uplink bandwidth, where M?LCRBs?6, and M is a positive integer greater than 1. The terminal device sends data on resources corresponding to the starting resource block and the length of the consecutive resource blocks. The methods and the devices provided in the embodiments of this application may be used in a communications system, for example, V2X, V2V, the Internet of Vehicles, MTC, DE-M, M2M, or the Internet of Things.

Abstract: Embodiments of this application provide a signal transmission method and a communications apparatus. The method includes: a terminal device receives information from a network device, wherein the information indicates the terminal device to send a signal in a fallback transmission mode; the terminal device determines that transmission of the signal is failed; and then sends the signal to the network device in the fallback transmission mode.

Abstract: Embodiments of this application disclose a data transmission method, a control information sending method, and a device, and relate to the field of communications technologies. The method may include: determining, by the communications device, a first resource used for receiving or sending data; receiving control information, where the control information includes first indication information that can be used to indicate that a resource is punctured or postponed, and where the first indication information is used to indicate that a second resource is punctured or postponed; and determining, by the communications device, a third resource based on the first indication information and the first resource, and receiving or sending the data by using the third resource.

Abstract: A reference signal sending method, a reference signal receiving method, and an apparatus are provided. A first network device determines a first resource. The first network device generates a reference signal corresponding to the first resource. The reference signal includes M parts, and all of the M parts are the same. The first resource does not carry a cyclic postfix of the reference signal. Alternatively, the first resource carries a cyclic prefix of the reference signal and the cyclic prefix corresponding to the reference signal is located only at the start of the 1st part in the M parts. M is a positive integer. The first network device sends the reference signal to a second network device on the first resource.

Abstract: A resource configuration method, apparatus and storage medium are disclosed. The method includes: sending, by a network device, first information to a terminal, where the first information is used by the terminal to determine not to send data and/or receive data on a first resource; and the first information includes first indication information used to indicate a first resource block (RB) and second indication information used to indicate a subcarrier occupied by the first resource on the first RB; or the first information includes third indication information used to indicate a first subcarrier, and the first subcarrier is used to determine the first resource. The resource configuration method and apparatus and the storage medium that are provided in the present disclosure can improve resource configuration flexibility.

Abstract: Various embodiments provide a communication method, a communications apparatus, and a computer-readable storage medium. In those embodiments, a first transmit power can be determined for transmitting first information in a first time unit on a first carrier and a second transmit power can be determined for transmitting second information in a second time unit on a second carrier. A third transmit power can be determined for transmitting the second information in a first time period and transmitting the second information in a second time period using the second transmit power or the third transmit power. The second information can be sent in the first time period using the third transmit power. In those embodiments, a sum of powers used by a terminal device to transmit two uplink carriers in a same time period does not exceed a maximum transmit power of the terminal device.

Abstract: An information receiving method and an apparatus are disclosed. The method includes: receiving, by a terminal device, first power information and second power information from a network device; and determining a first maximum transmission power based on the first power information, and determining a second maximum transmission power based on the second power information, where the first maximum transmission power is a maximum transmission power to be used by the terminal device for transmitting a signal by a first radio access technology, and the second maximum transmission power is a maximum transmission power to be used by the terminal device for transmitting a signal by a second radio access technology.

Abstract: A signal sending method, a signal receiving method, and a device are disclosed. The signal sending method includes: determining, by a network device, an SSB and indication information, where the indication information is used to indicate that a frequency location of the SSB is one of frequencies in a frequency set, and the frequency set includes a first frequency and a second frequency, or includes a first frequency, a second frequency, and a third frequency; and sending, by the network device, the SSB and the indication information to a terminal device.

Abstract: A random access method and apparatus, the method includes: receiving, by a first node, first information sent by a second node, where the first information is used to determine a first transmit power, and the first transmit power is a power used when the first node sends downlink information to the second node over a first link; and the first link is a link between the first node and the second node, and the first node is an upper-level device of the second node; and determining, by the first node, the first transmit power based on the first information. Therefore, the first node determines the first transmit power based on the first information, and uses the first transmit power when sending the downlink information to the second node over the first link, so that interference between signals received by the second node can be reduced.